博士（工学）, 北海道大学

修士（工学）, 筑波大学

学士（工学）, 筑波大学

Biomechanics

Motion Analysis

Real Time Control

Robotics

Inertial Sensor

Joint Mechanics

Gait Analysis

Informatics, Mechanics and mechatronics, Biomechanics

Informatics, Robotics and intelligent system, Biomechanics

Bachelor's degree program, School of Engineering

Master's degree program, Graduate School of Engineering

Doctoral (PhD) degree program, Graduate School of Engineering

Apr. 2017, The Japan Society of Mechanical Engineers, Japan Society of Mechanical Engineers Encouragement Award (Research)
Ryo Takeda

May 2015, The Society of Materials Science, Japan, Best Presentation Award, 64th JSMS Academic Meeting
The Effects of Anterior Cruciate Ligament Bundles on Knee Joint Stability
Ryo Takeda

Development of a rapid aortic mesh generation method for analysis from CT data of dissected thoracic aorta
Development of a; rapid aortic mesh generation method for analysis; from CT data of dissected thoracic aorta
Proceedings of JSPE Semestrial Meeting, 2025A, 0, 631, 632, Sep. 2025
Japanese, Research society

Analysis of Hemodynamic Parameters in the Left Atrial Appendage Using Open-Source CFD
Ryo TAKEDA; Taichi SUGIYAMA; Katsuhiko SASAKI; Shiya HONDA; Nobuyuki OSHIMA; Hiroichi YOKOYAMA; Hideyoshi TAKASHIMA; Eisuke KAMIDE; Hiroaki DATE
The Proceedings of The Computational Mechanics Conference, 2025.38, OS15, 25, Japan Society of Mechanical Engineers, Aug. 2025
Japanese, Scientific journal

Stiffness design and layer shape optimization of domain-divided perforated laminates by sequential approximate multi-objective optimization
Shinya Honda; Xin Wang; Ryo Takeda; Katsuhiko Sasaki
Mechanics of Advanced Materials and Structures, 1, 17, Informa UK Limited, 06 Jul. 2025
Scientific journal

Sequential approximate optimization of curvilinear fiber paths for enhanced vibration performance in composite shells
Xin Wang; Shinya Honda; Katsuhiko Sasaki; Ryo Takeda
Composite Structures, 119532, 119532, Elsevier BV, Jul. 2025, [Peer-reviewed]
English, Scientific journal

A study on the possibility of utilizing CFRP fabricated by EDRM as structural capacitor by incorporating CNF
Md Tansirul Islam; Shinya Honda; Kazuaki Katagiri; Katsuhiko Sasaki; Ryo Takeda; Yuto Shimizu; Antoine Cozigou
Composites Part C: Open Access, 17, 100600, 100600, Elsevier BV, Jul. 2025
Scientific journal

Effect of Electrical Conditions on the Mechanical Properties of CFRP Fabricated by Electrodeposition Resin Molding
Yuto SHIMIZU; Shinya HONDA; Katsuhiko SASAKI; Ryo TAKEDA; Kazuaki KATAGIRI
Journal of the Japan Society for Composite Materials, 51, 3, 83, 89, The Japan Society for Composite Materials, 15 May 2025
Scientific journal

電着樹脂含浸CFRPの通電条件と力学特性の関係
清水 佑音; 本田 真也; 佐々木 克彦; 武田 量; 片桐 一彰
日本複合材料学会誌, May 2025
Japanese, Scientific journal

Validity of Wearable Gait Analysis System for Measuring Lower-Limb Kinematics during Timed Up and Go Test
Yoshiaki Kataoka; Tomoya Ishida; Satoshi Osuka; Ryo Takeda; Shigeru Tadano; Satoshi Yamada; Harukazu Tohyama
Sensors, 24, 19, 6296, 6296, MDPI AG, 29 Sep. 2024
Scientific journal, Few studies have reported on the validity of a sensor-based lower-limb kinematics evaluation during the timed up and go (TUG) test. This study aimed to determine the validity of a wearable gait sensor system for measuring lower-limb kinematics during the TUG test. Ten young healthy participants were enrolled, and lower-limb kinematics during the TUG test were assessed using a wearable gait sensor system and a standard optical motion analysis system. The angular velocities of the hip, knee, and ankle joints in sit-to-stand and turn-to-sit phases were significantly correlated between the two motion analysis systems (R = 0.612–0.937). The peak angles and ranges of motion of hip, knee, and ankle joints in the walking-out and walking-in phases were also correlated in both systems (R = 0.528–0.924). These results indicate that the wearable gait sensor system is useful for evaluating lower-limb kinematics not only during gait, but also during the TUG test.

Cervical motion analysis using wearable inertial sensors to patients with cervical ossification of posterior longitudinal ligament.
Satoshi Osuka; Masahiko Takahata; Ryo Takeda; Takeshi Chiba; Hiroaki Hori; Yoshiaki Kataoka; Norimasa Iwasaki; Masahiko Mukaino; Harukazu Tohyama
Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 29 Sep. 2024, [International Magazine]
English, Scientific journal, This study aimed to clarify cervical kinematics during daily activities, including level walking and stair ascending, in patients with cervical ossification of the posterior longitudinal ligament (C-OPLL). Eighteen patients with myelopathy caused by C-OPLL and 18 healthy controls were recruited to participate in the study. The sagittal cervical kinematics during level walking and stair ascent were quantitatively assessed using a motion analysis system based on wearable inertial sensors. The Japanese Orthopaedic Association score, Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire, Neck Disability Index, and deep sensation in the lower extremities were assessed in all participants. Nine of 18 patients with C-OPLL presented with deep sensory disturbances. Patients with C-OPLL with deep sensory disturbances exhibited different sagittal plane cervical motion patterns than healthy controls during level walking and stair ascent. During the first phase of stair ascent, both patients with C-OPLL and healthy controls flexed their necks to the same degree; however, during the middle and final phases of stair ascent and all phases of level walking, the mean cervical flexion angle of patients with C-OPLL with deep sensory disturbances was significantly higher than that of patients with C-OPLL without deep sensory disturbance and healthy controls. Our data suggest that patients with C-OPLL presenting with deep sensory disturbances are likely to walk with their necks flexed and gaze downward to observe their steps throughout their daily lives. This habitual neck posture may lead to a vicious cycle of cervical kyphosis and worsening of compressive myelopathy.

ウェアラブル慣性センサが明らかにする日常生活動作における頸椎後縦靱帯骨化症症例の頸部運動の特徴
大須賀 聡; 高畑 雅彦; 武田 量; 遠山 晴一
Journal of Spine Research, 15, 3, 683, 683, (一社)日本脊椎脊髄病学会, Apr. 2024
Japanese

Investigation of manufacture variables on the mechanical properties of CFRP prepared by electrodeposition resin molding method
Md Tansirul Islam; Shinya Honda; Kazuaki Katagiri; Katsuhiko Sasaki; Ryo Takeda
Mechanics of Advanced Materials and Structures, 31, 29, 11363, 11378, Informa UK Limited, 18 Jan. 2024, [Peer-reviewed]
Scientific journal

逐次近似最適化による可変軸剛性複合材の座屈特性設計
Xin WANG; Shinya HONDA; Ryo TAKEDA; Katsuhiko SASAKI
The Proceedings of Design & Systems Conference, 2024.34, 3201, 3201, Japan Society of Mechanical Engineers, 2024
Scientific journal

ウェアラブルセンサを用いた頸椎後縦靱帯骨化症症例の階段昇降における頸部三次元動作解析
大須賀 聡; 高畑 雅彦; 武田 量; 遠山 晴一
日本運動器理学療法学会学術大会抄録集, 11回, 211, 211, (一社)日本運動器理学療法学会, Oct. 2023
Japanese

ウェアラブルセンサを用いた頭頸部運動評価システムの妥当性の検討
大須賀 聡; 高畑 雅彦; 武田 量; 石田 知也; 中田 光海; 舘ヶ澤 翔; 三好 航平; 遠山 晴一
運動器リハビリテーション, 34, 1, 39, 44, 日本運動器科学会, Jun. 2023
Japanese

Evaluation of Lower-Limb Kinematics during Timed Up and Go (TUG) Test in Subjects with Locomotive Syndrome (LS) Using Wearable Gait Sensors (H-Gait System).
Yoshiaki Kataoka; Yuki Saito; Ryo Takeda; Tomoya Ishida; Shigeru Tadano; Teppei Suzuki; Kentaro Nakamura; Akimi Nakata; Satoshi Osuka; Satoshi Yamada; Mina Samukawa; Harukazu Tohyama
Sensors (Basel, Switzerland), 23, 2, 06 Jan. 2023, [Peer-reviewed], [International Magazine]
English, Scientific journal, Few studies have dealt with lower-limb kinematics during the timed up and go (TUG) test in subjects with locomotive syndrome (LS). This study aimed to evaluate the characteristics of lower-limb kinematics during the TUG test in subjects with LS using the wearable sensor-based H-Gait system. A total of 140 participants were divided into the non-LS (n = 28), the LS-stage 1 (n = 78), and LS-stage 2 (n = 34) groups based on the LS risk test. Compared with the non-LS group, the LS-stage 1 and LS-stage 2 groups showed significantly smaller angular velocity of hip and knee extension during the sit-to-stand phase. The LS-stage 2 group showed significantly smaller peak angles of hip extension and flexion during the walking-out phase compared to the non-LS group. These findings indicate that the evaluation of the lower-limb kinematics during the TUG test using the H-Gait system is highly sensitive to detect LS, compared with the evaluation of the lower-limb kinematics when simply walking.

Stent Geometry Optimization for In-Stent Restenosis Prevention Through Fluid–Structure Interaction Analysis
Varien Janitra Nuralif Susanto; Ryo Takeda; Shinya Honda; Katsuhiko Sasaki
Lecture Notes in Mechanical Engineering, 98, 105, 2023
International conference proceedings

Effect of Heat Curing Temperature for CFRP Fabricated by Electrodeposition Resin Molding Method
Md Tansirul Islam; Shinya Honda; Kazuaki Katagiri; Katsuhiko Sasaki; Ryo Takeda
Proceedings of the American Society for Composites - 38th Technical Conference, ASC 2023, 115, 123, 2023
International conference proceedings

Adaptive Vibration Control of Smart Structure Using Deep Reinforcement Learning
Shinya Honda; Yuta Imura; Katsuhiko Sasaki; Ryo Takeda
EPI International Journal of Engineering, 5, 2, 92, 97, Center of Technology (COT), 31 Aug. 2022
Scientific journal, In this research, the authors developed an adaptive control method using deep reinforcement learning which is a kind of machine learning to suppress the vibration of smart structures. This method just requires information about the control response and input, and don’t require numerical models for the controlled object to design the controller. We experimented to verify the effectiveness of this method. In this experiment, a smart structure fabricated by an aluminum plate and a piezoelectric actuator was used as a controlled object. Three kinds of reinforcement learning algorithms are employed, Deep Q Network (DQN), Deep Deterministic Policy Gradient (DDPG), and Twin Delayed DDPG (TD3), and the control performance is compared. As a result, we succeeded in reducing the  norm of the frequency response to impulse disturbance by up to about 40 dB compared to the uncontrolled case. This demonstrates the applicability of the control method using deep reinforcement learning to adaptive vibration control.

Bending stiffness variability between a deployable robotic laser osteotome and its insertion device
Yukiko Tomooka; Georg Rauter; Nicolas Gerig; Ryo Takeda; Philippe Cattin; Manuela Eugster
Current Directions in Biomedical Engineering, 8, 1, 138, 141, 30 Jul. 2022, [Peer-reviewed]
English, International conference proceedings

Estimation of damping characteristics and optimization of curvilinear fiber shapes for composites fabricated by electrodeposition resin molding
Shinya Honda; Hiraku Takisawa; Ryo Takeda; Katsuhiko Sasaki; Kazuaki Katagiri
Mechanics of Advanced Materials and Structures, 12 Jul. 2022, [Peer-reviewed]
Scientific journal

10m歩行試験における歩行時下肢キネマティクスがロコモ25に関連する要因の検討
齋藤 優輝; 片岡 義明; 武田 量; 石田 知也; 但野 茂; 山田 悟史; 大須賀 聡; 中田 光海; 遠山 晴一
運動器リハビリテーション, 33, 2, 142, 142, 日本運動器科学会, Jun. 2022
Japanese

Timed up and go testにおける下肢キネマティクスのロコモ重症度に関連する因子
片岡 義明; 斎藤 優輝; 武田 量; 石田 知也; 但野 茂; 山田 悟史; 大須賀 聡; 中田 光海; 遠山 晴一
運動器リハビリテーション, 33, 2, 144, 144, 日本運動器科学会, Jun. 2022
Japanese

wearable sensorを用いた頭頸部運動評価システムの妥当性の検討
大須賀 聡; 高畑 雅彦; 武田 量; 石田 知也; 中田 光海; 舘ケ澤 翔; 三好 航平; 遠山 晴一
運動器リハビリテーション, 33, 2, 154, 154, 日本運動器科学会, Jun. 2022
Japanese

wearable sensorを用いた頭頸部運動評価システムの検者内・検者間信頼性の検討
舘ケ澤 翔; 大須賀 聡; 高畑 雅彦; 武田 量; 石田 知也; 中田 光海; 三好 航平; 遠山 晴一
運動器リハビリテーション, 33, 2, 155, 155, 日本運動器科学会, Jun. 2022
Japanese

ウェアラブルセンサシステムを用いた階段昇降時におけるInitial/Terminal Contactの検出
武田 量; 大須賀 聡; 山田 悟史; 石田 智也; 遠山 晴一; 但野 茂
運動器リハビリテーション, 33, 2, 177, 177, 日本運動器科学会, Jun. 2022
Japanese

Evaluation of gait characteristics in subjects with locomotive syndrome using wearable gait sensors.
Yuki Saito; Tomoya Ishida; Yoshiaki Kataoka; Ryo Takeda; Shigeru Tadano; Teppei Suzuki; Kentaro Nakamura; Akimi Nakata; Satoshi Osuka; Satoshi Yamada; Mina Samukawa; Harukazu Tohyama
BMC musculoskeletal disorders, 23, 1, 457, 457, 14 May 2022, [Peer-reviewed], [International Magazine]
English, Scientific journal, BACKGROUND: Individuals with locomotive syndrome (LS) require nursing care services owing to problems with locomotion and the musculoskeletal system. Individuals with LS generally have a reduced walking speed compared with those without LS. However, differences in lower-limb kinematics and gait between individuals with and without LS are not fully understood. This study aimed to clarify the characteristics of the gait kinematics of individuals with LS using wearable sensors. METHODS: We assessed 125 participants (mean age 73.0 ± 6.7 years) who used a public health promotion facility. Based on the 25-question Geriatric Locomotive Function Scale (GLFS-25), these participants were grouped into the non-LS (GLFS-25 < 7), LS-stage 1 (GLFS-25 7-16), and LS-stage 2 (GLFS-25 ≥ 16) groups (larger GLFS-25 scores indicate worse locomotive ability). Spatiotemporal parameters and lower-limb kinematics during the 10-m walk test were analyzed by the "H-Gait system", which is a motion analysis system that was developed by the authors and is based on seven inertial sensors. The peak joint angles during the stance and swing phases, as well as the gait speed, cadence, and step length were compared among all groups. RESULTS: There were 69 participants in the non-LS group, 33 in the LS-stage 1 group, and 23 in the LS-stage 2 group. Compared with the non-LS group, the LS-stage 2 group showed significantly smaller peak angles of hip extension (9.5 ± 5.3° vs 4.2 ± 8.2°, P = 0.002), hip flexion (34.2 ± 8.8° vs 28.5 ± 9.5°, P = 0.026), and knee flexion (65.2 ± 18.7° vs 50.6 ± 18.5°, P = 0.005). The LS-stage 1 and LS-stage 2 groups had a significantly slower mean gait speed than the non-LS group (non-LS: 1.3 ± 0.2 m/s, LS-stage 1: 1.2 ± 0.2 m/s, LS-stage 2: 1.1 ± 0.2 m/s, P < 0.001). CONCLUSIONS: The LS-stage 2 group showed significantly different lower-limb kinematics compared with the non-LS group, including smaller peak angles of hip extension, hip flexion, and knee flexion. It would be useful to assess and improve these small peak joint angles during gait for individuals classified as LS-stage 2.

Investigations into the Potential of using of Open Source CFD to analyze the Differences in Hemodynamic Parameters for Aortic Dissections (Healthy vs. Stanford Type A and B)
Ryo Takeda; Fumiya Sato; Hiroichi Yokoyama; Katsuhiko Sasaki; Nobuyuki Oshima; Akiyoshi Kuroda; Hideyoshi Takashima; Chenyu Li; Shinya Honda; Hiroyuki Kamiya
Annals of Vascular Surgery, 79, 310, 323, Elsevier BV, Feb. 2022, [Peer-reviewed], [Lead author]
English, Scientific journal

Fluid Structure Interaction Analysis of Aorta Using OpenFOAM and CalculiX
NARA Toshiki; TAKASHIMA Hideyoshi; LI Chenyu; TAKEDA Ryo; SASAKI Katsuhiko; KURODA Akiyoshi; YOKOYAMA Hiroichi; KAMIYA Hiroyuki
The Proceedings of The Computational Mechanics Conference, 2022.35, 15-05, The Japan Society of Mechanical Engineers, 2022
Japanese, Currently, biomechanical simulations of blood vessels and organs are widely used in medical research, and it is expected to realize rapid and accurate medical diagnosis by personalized biological simulations for each individual using high-speed and high-precision 3D modeling of the body internal geometry by Multi Detector-row Computed Tomography (MDCT) and Magnetic Resonance Imaging (MRI). In particular, biomechanical simulation approach using Open Source Software (OSS) has been developed for use in the medical field, and recently, its application to more challenging multiphysics simulation has been studied. However, OSS has many issues such as assurance of accuracy and validity of the analysis, the computation time and stability of Fluid-Structure Interaction (FSI), and the lack of analysis functions for complex phenomena. In particular, blood flow simulation using OpenFOAM, a fluid analysis OSS, has issues in the representation of blood pressure changes caused by pulsation and body movement, and the stability of coupled analysis in conjunction with other structural analysis software. In this study, we added the Windkessel model, which is one of the models for expressing blood pressure changes, to OpenFOAM and developed a two-way coupled multi-physics simulation approach using OpenFOAM and CalculiX. As an example of personalized biomechanical simulation, we applied the method to simulate blood flow in the thoracic aorta and evaluated its effectiveness.

Vibration optimization of laminated composites with curvilinear reinforcing fibers for shell structures
SAIWAKI Isamu; HONDA Shinya; KATAGIRI Kazuaki; SASAKI Katsuhiko; TAKEDA Ryo
The Proceedings of the Dynamics & Design Conference, 2022, 145, The Japan Society of Mechanical Engineers, 2022
Japanese, Tailored Fiber Placement (TFP) is an embroidery technique that enables it possible to design free fiber shapes on base material sheets. The TFP generally creates curved fibers on a flat surface. However, CFRP structures are often used as shell structures rather than as flat plates, and there is not enough research to design fiber shapes on curved surfaces. In this research, we applied our previous optimization method for curved fiber shapes to shell structures. Curved fiber shapes were created by the linear combination of radial basis functions (RBFs) to represent complex fiber shapes. The fiber shape on a curved surface was represented by projecting the fiber shape on a plane surface using a coordinate transformation technique. Using this method, we investigated optimum fiber shapes to improve the first natural frequency of shell structure composites. The results showed that the optimum fiber shape gave higher natural frequencies than the linear fiber orientation. Obtained optimum fiber shape resulted in higher natural frequencies than the linear fiber orientation.

Damping identification and optimization of laminated composites with curved reinforcing fibers
Honda Shinya; Takisawa Hiraku; Katagiri Kazuaki; Sasaki Katsuhiko; Takeda Ryo
NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan, 66, 163, National Committee for IUTAM, 2022
Japanese, The effect of both curvilinear fiber orientation and the resulting thickness distribution on modal damping of carbon fiber reinforced plastics (CFRP) fabricated by electrodeposition resin molding (ERM) was investigated in this study. Tailored fiber placement (TFP) is employed to manufacture carbon fiber preforms with continuous curvilinear fiber paths. Damping of CFRP fabricated by ERM was calculated using the concept of specific damping capacity (SDC). Optimization of fiber shapes in L-shaped plate model was conducted to maximize the first modal SDC using particle swarm optimization (PSO). As a result, the optimum fiber shape successfully improves both the first natural frequency and modal SDC in comparison with several unidirectional fiber shapes.

Optimum design of curvilinear reinforcing fiber shapes for CFRP plates fabricated by electrodeposition resin molding method
HONDA Shinya; TAKISAWA Hiraku; KATAGIRI Kazuaki; SASAKI Katsuhiko; TAKEDA Ryo
The Proceedings of OPTIS, 2022.14, U00010, The Japan Society of Mechanical Engineers, 2022
Japanese, Fiber shape optimization was performed to improve the damping properties of CFRP fabricated by electrodeposition resin molding (EDRM) method. Damping properties of composites were modeled by the specific damping capacity (SDC), and the material damping parameters required for numerical estimation were identified by an inverse analysis using results of experimental modal analysis and finite element analysis. In the optimization, a curvilinear fiber shape that maximizes the first mode SDC was explored. The thickness distribution due to the curvilinear fiber shape was estimated and applied to the finite element analysis. The fiber shapes obtained by the optimization improved the first natural frequencies and mode SDCs compared to several straight fiber orientations, indicating that the curved fiber orientation is effective in improving damping.

Analysis of 3-D Kinematics Using H-Gait System during Walking on a Lower Body Positive Pressure Treadmill.
Yoshiaki Kataoka; Ryo Takeda; Shigeru Tadano; Tomoya Ishida; Yuki Saito; Satoshi Osuka; Mina Samukawa; Harukazu Tohyama
Sensors (Basel, Switzerland), 21, 8, 08 Apr. 2021, [International Magazine]
English, Scientific journal, Recently, treadmills equipped with a lower-body positive-pressure (LBPP) device have been developed to provide precise body weight support (BWS) during walking. Since lower limbs are covered in a waist-high chamber of an LBPP treadmill, a conventional motion analysis using an optical method is impossible to evaluate gait kinematics on LBPP. We have developed a wearable-sensor-based three-dimensional motion analysis system, H-Gait. The purpose of the present study was to investigate the effects of BWS by a LBPP treadmill on gait kinematics using an H-Gait system. Twenty-five healthy subjects walked at 2.5 km/h on a LBPP treadmill under the following three conditions: (1) 0%BWS, (2) 25%BWS and (3) 50%BWS conditions. Acceleration and angular velocity from seven wearable sensors were used to analyze lower limb kinematics during walking. BWS significantly decreased peak angles of hip adduction, knee adduction and ankle dorsiflexion. In particular, the peak knee adduction angle at the 50%BWS significantly decreased compared to at the 25%BWS (p = 0.012) or 0%BWS (p < 0.001). The present study showed that H-Gait system can detect the changes in gait kinematics in response to BWS by a LBPP treadmill and provided a useful clinical application of the H-Gait system to walking exercises.

Optimal design and evaluation with ground structure based topology optimization
KAYANO Koki; HONDA Shinya; KATAGIRI Kazuaki; SASAKI Katsuhiko; TAKEDA Ryo
The Proceedings of the Dynamics & Design Conference, 2021, 129, The Japan Society of Mechanical Engineers, 2021
Japanese, The aim of this study is to design an optimum CFRP lattice structure for application to a morphing wing. The ground structure based topology method is adopted as the optimization method, and the results are validated by experiments. In this study, to confirm the effectiveness of the optimization method, a simple hook shape was optimized and its stiffness and strength was compared by tensile tests. A 3D printer capable of laminating thermoplastic CFRP was used to fabricate the specimen. The results of tensile tests showed that the optimized specimens exhibited higher stiffness and strength than the reference model, confirming the effectiveness of the proposed method.

Vibration characteristics of carbon fiber reinforced composites fabricated by electrodeposition molding method
Hiraku Takisawa; Naoki Hashimoto; Shinya Honda; Kazuaki Katagiri; Katsuhiko Sasaki; Ryo Takeda
15th International Conference on Motion and Vibration Control, MoViC 2020, 07 Dec. 2020
International conference proceedings

Effects of Unweighting on Gait Kinematics During Walking on a Lower-Body Positive Pressure Treadmill in Patients with Hip Osteoarthritis
Yoshiaki Kataoka; Tomohiro Shimizu; Ryo Takeda; Shigeru Tadano; Yuki Saito; Satoshi Osuka; Tomoya Ishida; Mina Samukawa; Tohru Irie; Daisuke Takahashi; Norimasa Iwasaki; Harukazu Tohyama
Research Square, 10 Apr. 2020, [Peer-reviewed]

Background: Hip osteoarthritis (OA) is a musculoskeletal condition that makes walking difficult due to pain induced by weight-bearing activity. Treadmills that support body weight reduce the load on the lower limbs, and those equipped with a lower-body positive pressure (LBPP) device, developed as a new method for unweighting, significantly reduce pain in patients with knee OA. However, the effects of unweighting on gait kinematics remain unclear in patients with hip OA. Therefore, we investigated the effects of unweighting on kinematics in patients with hip OA during walking on a treadmill equipped with an LBPP device.Methods: Fifteen women with hip OA and fifteen age-matched female controls wore a three-dimensional motion analysis system and walked at a comfortable speed on the LBPP treadmill. Data regarding hip pain using a numeric rating scale under three different unweighting conditions (100%, 75%, and 50% bodyweight) were collected. Sagittal plane lower-limb kinematics under each condition were calculated and compared.Results: In the hip OA group, numerical rating scores at the unweighted condition were significantly decreased compared to the 100% bodyweight condition, and sagittal kinematics in the hip and knee joints significantly decreased compared to the healthy controls. In both groups, unweighting significantly decreased the peak hip flexion angle and increased the peak ankle plantarflexion angle during walking.Conclusions: Although unweighting by LBPP decreased pain in the hip OA group, gait kinematics did not improve despite less load on the hip joint. Therefore, clinicians should consider the benefits of pain reduction, rather than improved gait, when considering LBPP treadmill for patients with hip OA.

Estimation and Optimization of Vibration Damping Characteristics for Composites Fabricated by Electrodeposition Resin Molding Method
TAKISAWA Hiraku; Honda Shinya; KATAGIRI Kazuaki; SASAKI Katsuhiko; TAKEDA Ryo
The Proceedings of the Dynamics & Design Conference, 2020, 105, 105, The Japan Society of Mechanical Engineers, 2020
Japanese,

Our previous research found that CFRPs fabricated by the electrodeposition resin molding (ERM) method exhibited high damping properties. In this research, tailored fiber placement (TFP) was used to make curved fiber shapes, however, those shapes were limited to a parabola and a sine curve. Linear combination of radial basis functions (RBFs) were used to make more complex fiber shapes, and optimum fiber shapes are investigated to improve damping of CFRPs fabricated by the ERM method. Damping is modeled by the specific damping capacity (SDC) which is defined as the ratio of dissipated energy and maximum strain energy, and total damping properties of CFRPs are calculated using finite element analysis (FEA). Before optimization, material SDCs of a plain weave sheet and a TFP layer, which are compositions of CFRPs, are identified by particle swarm optimization (PSO) using the results of experimental modal analysis and FEA. Then, fiber shapes were optimized to maximize the first modal SDC of L-shaped and T-shaped plates using PSO with nonlinear dissipative term. Simultaneously, the thickness distribution which is caused by overlaps or gaps between curved fibers was estimated and applied to a finite element model for more accurate numerical estimation. The results showed that the present optimization of curved fiber shapes including estimation of thickness distribution improves the first modal SDC and decreases the volume of a TFP layer in comparison with unidirectional fiber shapes.

ロコモティブシンドローム発症の危険因子の定量化のための歩行解析システムの開発
遠山 晴一; 但野 茂; 武田 量; 岩崎 倫政; 生駒 一憲; 千葉 健
運動器リハビリテーション, 30, 4, 419, 419, 日本運動器科学会, Dec. 2019
Japanese

Influence of BMI on Gait Characteristics of Young Adults: 3D Evaluation Using Inertial Sensors
Valeria Rosso; Valentina Agostini; Ryo Takeda; Shigeru Tadano; Laura Gastaldi
Sensors, 19, 19, 4221, Sep. 2019, [Peer-reviewed]
English, Scientific journal

Process monitoring of deep drawing using machine learning
Tomohiro Tsuruya; Musashi Danseko; Katsuhiko Sasaki; Shinya Honda; Ryo Takeda
IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM, 2019-, 1227, 1232, Institute of Electrical and Electronics Engineers Inc., 01 Jul. 2019
English, International conference proceedings

三次元歩行計測システムH-Gaitによる階段昇降時の下肢kinematics評価
大須賀 聡; 武田 量; 但野 茂; 山田 悟史; 片岡 義明; 石田 知也; 遠山 晴一
運動器リハビリテーション, 30, 2, 210, 210, 日本運動器科学会, Jun. 2019
Japanese

ロコモティブシンドローム発症の危険因子の定量化のための歩行解析システムの開発
遠山 晴一; 片岡 義明; 武田 量; 大須賀 聡; 千葉 健; 清水 智弘; 生駒 一憲; 岩崎 倫政; 但野 茂
運動器リハビリテーション, 30, 2, 123, 123, 日本運動器科学会, Jun. 2019
Japanese

Vulnerability Analysis on the Interaction between Asymmetric Stent and Arterial Layer
Achmad Syaifudin; Julendra B. Ariatedja; Yusuf Kaelani; Ryo Takeda; Katsuhiko Sasaki
Bio-medical Materials and Engineering, 30, 3, 309, 322, May 2019, [Peer-reviewed]

Vibration characteristic of weight saving boom sprayer by using CFRP
Satoru TAMAKI; Shinya HONDA; Yohei HOSHINO; Katsuhiko SASAKI; Ryo TAKEDA
The Proceedings of the Dynamics & Design Conference, 2019, 102, 102, Japan Society of Mechanical Engineers, 2019
Scientific journal

Vibration characteristics of CFRP fabricated by electro-activated deposition molding method
HASHIMOTO Naoki; HONDA Sinya; KATAGIRI Kazuaki; SASAKI Katsuhiko; TAKEDA Ryo; YAMAGUCHI Shimpei; KAWAKITA Sonomi
The Proceedings of the Dynamics & Design Conference, 2019, 103, 103, The Japan Society of Mechanical Engineers, 2019
Japanese,

An autoclave molding with prepregs is the most general method of CFRP manufacturing. It is well known that this method is time and energy consuming and prevents the cost reduction of CFRPs. Therefore, aiming to improve CFRP productivity, some manufacturing methods without the autoclave have been proposed such as a vacuumed resin transfer molding（VaRTM）method. The authors have been also proposed a new CFRP manufacturing method that is an electro deposition resin molding（EDRM）method. The EDRM is an application of the electro deposition technology which has been used as a coating technology for automobiles, and it is suitable for mass productions. In our previous studies, static mechanical properties including stiffnesses and strength of CFRPs molded by the EDRM have been investigated, but their dynamic properties have not been done yet. Therefore, in this study, in order to evaluate the vibration characteristics of CFRPs produced by the EDRM, an experimental modal analysis and finite element analysis（FEA） were performed on CFRP specimens with straight and curved reinforcing fibers. The specimens were also manufactured by the VaRTM method and their vibration damping characteristics were compared. It was confirmed from numerical and experimental results that natural frequencies and eigenmode shapes agree well with high accuracy, and the FEA is useful for the specimen manufactured by the EDRM. It is also found that CFRPs produced by the EDRM has greater modal damping ratios than CFRPs by the VaRTM.

Forming State Recognition in Deep Drawing Process with Machine Learning
Tomohiro Tsuruya; Musashi Danseko; Katsuhiko Sasaki; Shinya Honda; Ryo Takeda
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 13, 3, 2019, [Peer-reviewed]
English, Scientific journal

Temperature Dependence on Thermal and Strength Properties of Aluminum Based High Thermal Conductive Composites Containing VGCF-CNT Fillers
Kohei Fukuchi; Katsuhiko Sasaki; Terumitsu Imanishi; Ryo Takeda
Mechanical Engineering Journal, Apr. 2018, [Peer-reviewed]

Development of Asymmetric Stent for Treatment of Eccentric Plaque
Achmad Syaifudin; Ryo Takeda; Katsuhiko Sasaki
Bio-Medical Materials and Engineering, 29, 3, 299, 317, Mar. 2018, [Peer-reviewed]

Deformation Analysis of Self-Expanding Stent Considering Plaque and a New Expanding Mechanism
Katsuhiko Sasaki; Yukiko Tomooka; Ryo Takeda; Achmad Syaifudin
EPI International Journal of Engineering, 1, 1, 98, 106, Feb. 2018, [Peer-reviewed]

下肢陽圧式トレッドミルによる免荷が変形性股関節症症例の歩行時における下肢キネマティクスに及ぼす影響
片岡 義明; 入江 徹; 浅野 毅; 高橋 大介; 但野 茂; 武田 量; 山崎 有美; 岩崎 倫政; 遠山 晴一
北海道整形災害外科学会雑誌, 60, 134th suppl, 33, 33, 北海道整形災害外科学会, 2018
Japanese

Effect of Asymmetric Geometry on the Flexibility of Stent
Achmad Syaifudin; Ryo Takeda; Katsuhiko Sasaki
The International Journal of Mechanical Engineering and Sciences, 1, 1, 1, 7, Mar. 2017, [Peer-reviewed]
Scientific journal

Evaluation of the Performances of Two Wearable Systems for Gait Analysis: A Pilot Study
Laura Gastaldi; Valentina Agostini; Ryo Takeda; Stefano Pastorelli; Shigeru Tadano
International Journal of Applied Engineering Research, 11, 16, 8820, 8827, Nov. 2016, [Peer-reviewed]
English, Scientific journal

Experimental and numerical study on phase change material (PCM) for thermal management of mobile devices
Yusuke Tomizawa; Katsuhiko Sasaki; Akiyoshi Kuroda; Ryo Takeda; Yoshihiko Kaito
APPLIED THERMAL ENGINEERING, 98, 320, 329, Apr. 2016, [Peer-reviewed]
English, Scientific journal

Gait characterization for osteoarthritis patients using wearable gait sensors (H-Gait systems)
Shigeru Tadano; Ryo Takeda; Keita Sasaki; Tadashi Fujisawa; Harukazu Tohyama
JOURNAL OF BIOMECHANICS, 49, 5, 684, 690, Mar. 2016, [Peer-reviewed]
English, Scientific journal

Strength Evaluation of Composite Material by Indentation
HIROSE Ryosuke; SASAKI Katsuhiko; TAKEDA Ryo
The Proceedings of Conference of Hokkaido Branch, 2016, 31, 32, The Japan Society of Mechanical Engineers, 2016
Japanese

Technical challenges using magneto-inertial sensors for gait analysis
L. Gastaldi; V. Rosso; V. Gabola; V. Agostini; M. M. Lovagnini Frutos; M. Knaflitz; R. Takeda; S. Tadano
2016 IEEE INTERNATIONAL SYMPOSIUM ON MEDICAL MEASUREMENTS AND APPLICATIONS (MEMEA), 274, 279, 2016, [Peer-reviewed]
English, International conference proceedings

Estimation of the CoM and CoP using a 3D body scanning systems Validation with force plate: a case study
D. Borzelli; L. Gastaldi; S. Pastorelli; A. Botter; T. M. M. Vieira; J. Takagi; R. Takeda; S. Tadano
2016 IEEE INTERNATIONAL SYMPOSIUM ON MEDICAL MEASUREMENTS AND APPLICATIONS (MEMEA), 280, 285, 2016, [Peer-reviewed]
English, International conference proceedings

An Effective Area Considering the Principal Stress to Evaluate Creep Strain Measured by Indentation Test
A. Takita; K. Sasaki; K. Ohguchi; R. Takeda
EXPERIMENTAL MECHANICS, 55, 6, 1081, 1091, Jul. 2015, [Peer-reviewed]
English, Scientific journal

The role of fibers in the femoral attachment of the anterior cruciate ligament in resisting Tibial displacement
Yasuyuki Kawaguchi; Eiji Kondo; Ryo Takeda; Keiichi Akita; Kazunori Yasuda; Andrew A. Amis
Arthroscopy - Journal of Arthroscopic and Related Surgery, 31, 3, 435, 444, W.B. Saunders, 01 Mar. 2015
English, Scientific journal

The Role of Fibers in the Femoral Attachment of the Anterior Cruciate Ligament in Resisting Tibial Displacement
Yasuyuki Kawaguchi; Eiji Kondo; Ryo Takeda; Keiichi Akita; Kazunori Yasuda; Andrew A. Amis
ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY, 31, 3, 435, 444, Mar. 2015, [Peer-reviewed]
English, Scientific journal

Effects of plaque lengths on stent surface roughness
Achmad Syaifudin; Ryo Takeda; Katsuhiko Sasaki
BIO-MEDICAL MATERIALS AND ENGINEERING, 25, 2, 189, 202, 2015, [Peer-reviewed]
English, Scientific journal

Drift Removal for Improving the Accuracy of Gait Parameters Using Wearable Sensor Systems
Ryo Takeda; Giulia Lisco; Tadashi Fujisawa; Laura Gastaldi; Harukazu Tohyama; Shigeru Tadano
SENSORS, 14, 12, 23230, 23247, Dec. 2014, [Peer-reviewed]
English, Scientific journal

Flexion-extension Knee Joint Motion Implementation Using a 6 Axis Robotic Manipulator Platform
Ryo Takeda; Ferdinando Rodriguez y Baena; Andrew Amis
The International Symposium on Interdisciplinary Research and Education on Medical Device Developments, 85, 87, Sep. 2013, [Peer-reviewed], [Lead author]
English, International conference proceedings

Three Dimensional Gait Analysis Using Wearable Acceleration and Gyro Sensors Based on Quaternion Calculations
Shigeru Tadano; Ryo Takeda; Hiroaki Miyagawa
SENSORS, 13, 7, 9321, 9343, Jul. 2013, [Peer-reviewed]
English, Scientific journal

Active vs. Passive DoF Release during Robot Assisted Knee Anterior Posterior Drawer Tests
Ryo Takeda; Ferdinando Rodriguez y Baena; Andrew Amis
Proceedings of the 4th Hamlyn Symposium on Medical Robotics, 87, 88, Jun. 2011, [Peer-reviewed]
English, International conference proceedings

Usage of Industrial Manipulator for Joint Biomechanical Testing
Ryo Takeda; Ferdinando Rodriguez y Baena; Andrew Amis
2010 Young Researchers Futures meeting on Medical Robotics in Surgery and Rehabilitation, 37, 37, Sep. 2010, [Peer-reviewed]
English, International conference proceedings

G0200-2-5 3-Dimensional Gait Analysis using Wearable Acceleration and Gyro Sensors
MIYAGAWA Hiroaki; TAKEDA Ryo; TADANO Shigeru
The proceedings of the JSME annual meeting, 2010, 63, 64, The Japan Society of Mechanical Engineers, 2010
Japanese, Gait analysis is important for evaluation of walk ability and rehabilitation effect. We propose a new method for gait analysis using wearable acceleration and gyro sensors based on quaternion calculations. In this method, each subject fixed seven sensor units which consisted of a tri-axis acceleration sensor and three single axis gyro sensors on their body segments. Acceleration and angular velocity data detected from each sensor unit were corrected during level walking. Initial orientations of sensor units were shown as inclinations from gravity axis by using acceleration data during upright positioning in the trial. Angular displacements of sensor units were estimated using angular velocity data during through the trial. An original algorithm based on quaternion calculation was used for the orientation estimations. Each orientation of sensor unit was transformed to orientation of body segment by rotation matrix obtained from calibration trial. Body segment orientations were used for consisting 3-D stick animation of subject during trial for gait representation. Measurement and analysis were applied for five subjects. The results were compared with results from camera system to focus on the joint angle. The joint angles showed the same tendency with similar joint angle values obtained in both systems. The portability without spatial constraints of this sensor system could improve the capability for clinical applications based on the gait analysis.

Gait posture estimation using wearable acceleration and gyro sensors
Ryo Takeda; Shigeru Tadano; Akiko Natorigawa; Masahiro Todoh; Satoshi Yoshinari
JOURNAL OF BIOMECHANICS, 42, 15, 2486, 2494, Nov. 2009, [Peer-reviewed], [Lead author]
English, Scientific journal

Gait Analysis using Acceleration and Gyro Sensors
Ryo Takeda
Hokkaido University, Mar. 2009, [Peer-reviewed]
English, Doctoral thesis

Gait analysis using gravitational acceleration measured by wearable sensors
Ryo Takeda; Shigeru Tadano; Masahiro Todoh; Manabu Morikawa; Minoru Nakayasu; Satoshi Yoshinari
JOURNAL OF BIOMECHANICS, 42, 3, 223, 233, Feb. 2009, [Peer-reviewed]
English, Scientific journal

Human Gait Analysis using Wearable Sensors of Acceleration and Angular Velocity
R. Takeda; S. Tadano; M. Todoh; S. Yoshinari
IFMBE Proceedings, 23, 1069, 1072, 2009, [Peer-reviewed]
English, International conference proceedings

Gait posture estimation by wearable acceleration and gyro sensor
R. Takeda; S. Tadano; A. Natorigawa; M. Todoh; S. Yoshinari
IFMBE Proceedings, 25, 9, 111, 114, 2009, [Peer-reviewed]
English, International conference proceedings

GAIT ANALYSIS USING WIRELESS ACCELERATION SENSORS AND GYRO SENSORS(1B3 Orthopaedic & Rehabilitation Biomechanics III)
Takeda Ryo; Tadano Shigeru; Todoh Masahiro; Yoshinari Satoshi
Proceedings of the ... Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 2007, 3, S35, The Japan Society of Mechanical Engineers, Nov. 2007, [Peer-reviewed], [Lead author]
English, International conference proceedings

Identification of Anisotropic Material Properties by Sequential Approximate Multi-Objective Optimization Using Vibration Characteristics
服部雅人; 本田真也; 武田量; 佐々木克彦, Dynamics & Design Conference (CD-ROM), 2024, 2024

Vibration optimization of composites with curved reinforcing fibers using projective transformation
久嶋拓也; 本田真也; 佐々木克彦; 武田量, Dynamics & Design Conference (CD-ROM), 2024, 2024

Evaluation of electric properties for carbon fiber reinforced plastics fabricated by electrodeposition resin molding method.
清水佑音; 本田真也; 佐々木克彦; 武田量; 片桐一彰, Dynamics & Design Conference (CD-ROM), 2023, 2023

Topological Optimization considering Thermal Deformation of a Cast Plate Structural Design
上田修生; 本田真也; 佐々木克彦; 武田量; 鈴木逸人; 戸羽篤也; 鶴谷知洋, 日本材料学会学術講演会講演論文集(CD-ROM), 70th, 2021

Estimation of Damping Characteristics and Optimization of Curved Fiber Orientation for Composites Fabricated by Electrodeposition Resin Molding
瀧澤拓; 本田真也; 片桐一彰; 佐々木克彦; 武田量, 構造強度に関する講演会講演集, 63rd, 2021

ロコモ度が10m歩行試験における下肢キネマティクスに与える影響の検討
齋藤優輝; 齋藤優輝; 片岡義明; 武田量; 但野茂; 但野茂; 石田知也; 山田悟史; 大須賀聡; 遠山晴一, 運動器リハビリテーション, 32, 1, 2021

Timed up and go testにおける下肢kinematicsによるロコモティブシンドロームのリスク因子の検討
片岡義明; 片岡義明; 斎藤優輝; 武田量; 石田知也; 但野茂; 但野茂; 山田悟史; 大須賀聡; 遠山晴一, 運動器リハビリテーション, 32, 1, 2021

医療人のための流体力学 入門 第5回 数式が苦手でもわかる流体力学の基礎から循環器領域への応用まで：血流シミュレーション
武田 量; 横山博一, INNERVISION, 34, 9, 124, 128, Sep. 2019, [Invited]
Japanese, Introduction commerce magazine

ロコモティブシンドローム発症の危険因子の定量化のための歩行解析システムの開発
遠山 晴一; 片岡 義明; 武田 量; 大須賀 聡; 千葉 健; 清水 智弘; 生駒 一憲; 岩崎 倫政; 但野 茂, 運動器リハビリテーション, 30, 2, 123, 123, Jun. 2019
日本運動器科学会, Japanese

三次元歩行計測システムH-Gaitによる階段昇降時の下肢kinematics評価
大須賀 聡; 武田 量; 但野 茂; 山田 悟史; 片岡 義明; 石田 知也; 遠山 晴一, 運動器リハビリテーション, 30, 2, 210, 210, Jun. 2019
日本運動器科学会, Japanese

Fluid-Structure Interaction Analysis of Aortic Dissection Using Open Source
CHEN Junnan; 佐々木克彦; 本田真也; 武田量; 大島伸行; 黒田明慈; 横山博一; LI Chenyu; 高嶋英厳, 日本機械学会計算力学講演会論文集(CD-ROM), 32nd, 2019

Blood Flow CFD Simulation considering Various Types of Aortic Dissection
佐藤史弥; 武田量; 佐々木克彦; 本田真也; 大島伸行; 横山博一, 日本機械学会年次大会講演論文集(CD-ROM), 2019, 2019

Gait measurements in the transverse plane using a wearable system: An experimental study of test-retest reliability
V. Rosso; L. Gastaldi; V. Agostini; R. Takeda; S. Tadano, I2MTC 2017 - 2017 IEEE International Instrumentation and Measurement Technology Conference, Proceedings, 05 Jul. 2017
Institute of Electrical and Electronics Engineers Inc., English

The Effects of Unweighting by a Lower Body Positive Pressure Treadmill on 3-D Gait Kinematics.
Yoshiaki Kataoka; Kentaro Homan; Ryo Takeda; Shigeru Tadano; Takeshi Chiba; Harukazu Tohyama, The 63th Annual Meeting of Orthopaedic Research Society (ORS), Mar. 2017
English

流体解析による大動脈解離後の血流評価および壁面せん断応力の推定
木島雄大; 武田量; 横山博一; 黒田明慈; 大島伸行; 佐々木克彦, 日本機械学会バイオフロンティア講演会講演論文集(CD-ROM), 28th, 2017

1F31 The Measurements of the Anterior Cruciate Ligament Bundles on the Knee Joint Load
HIRANO Yuki; TAKEDA Ryo; OKUZUMI Keisuke; SASAKI Katsuhiko, バイオエンジニアリング講演会講演論文集, 2016, 28, "1F31, 1"-"1F31-5", 09 Jan. 2016
The objective of this study was to clarify the contribution of the anterior cruciate ligament (ACL) on the knee joint stability. The ACL consists of three ligament bundles, each with their own different function. Based on the ACL triple bundle theory, a porcine stifle joint with the anteromedial bundle (AMB), intermediate bundle (1MB) and posteromedial bundle (PLB) was prepared. The knee joint was placed in a material testing machine capable of releasing/constraining 5 DoFs of the knee. The load contribution of each bundle was estimated by, sequentially cutting each bundle from the knee joint and measuring the load during an anterior-posterior drawer test. As a result, large decrease in the load contribution was observed when 1MB and PLB were cut, however only a small contribution was seen for the AMB., The Japan Society of Mechanical Engineers, Japanese

A212 The Effect of PCL Bundles on Knee Joint Stability
TAKEDA Ryo; OKUZUMI Keisuke; SASAKI Katsuhiko, Proceedings of the ... JSME Conference on Frontiers in Bioengineering, 2015, 26, 95, 96, 01 Oct. 2015
The Japan Society of Mechanical Engineers, Japanese

OS8-2 A NOVEL DRIFT REMOVAL METHOD FOR GAIT ANALYSIS USING WEARBLE SENSORS(OS8: Wearable Technologies for Rehabilitation)
Takeda Ryo; Lisco Giulia; Fujisawa Tadashi; Gastaldi Laura; Pastorelli Stefano; Tohyama Harukazu; Tadano Shigeru, Proceedings of the ... Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 2015, 8, 111, 111, 16 Sep. 2015
The Japan Society of Mechanical Engineers, English

PS5-9 INVESTIGATIONS OF THE LOAD CONTRIBUTIONS OF THE PM AND THE AL BUNDLES OF THE PCL(PS5: Poster Short Presentation V,Poster Session)
Takeda Ryo; Okuzumi Keisuke; Kawaguchi Yasuyuki; Sasaki Katsuhiko, Proceedings of the ... Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 2015, 8, 307, 307, 16 Sep. 2015
The Japan Society of Mechanical Engineers, English

PS4-14 EVALUATION OF A METHOD FOR IDENTIFING KNEE KOINT COR USING IMUS(PS4: Poster Short Presentation IV,Poster Session)
Yu Lu; Okuzimi Keisuke; Takeda Ryo; Sasaki Katsuhiko, Proceedings of the ... Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 2015, 8, 292, 292, 16 Sep. 2015
The Japan Society of Mechanical Engineers, English

PS3-4 DEVELOPMENT OF ASYMMETRIC STENT FOR TREATMENT OF ECCENTRIC PLAQUE(PS3: Poster Short Presentation III,Poster Session)
Syaifudin Achmad; Takeda Ryo; Sasaki Katsuhiko, Proceedings of the ... Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 2015, 8, 265, 265, 16 Sep. 2015
The Japan Society of Mechanical Engineers, English

PS3-11 MECHANICAL INFLUENCE OF ADVANCED SHAPE-MEMORY ALLOY STENTS DURING DEPLOYMENT(PS3: Poster Short Presentation III,Poster Session)
Tomooka Yukiko; Sasaki Katsuhiko; Takeda Ryo, Proceedings of the ... Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 2015, 8, 272, 272, 16 Sep. 2015
The Japan Society of Mechanical Engineers, English

S0220304 Analysis of Stent Expansion Considering Blood Deformation Due to Pulse Flow
HOSHINO Amane; KURODA Akiyoshi; Sasaki Katsuhiko; Takeda Ryo, Mechanical Engineering Congress, Japan, 2015, "S0220304, 1"-"S0220304-5", 13 Sep. 2015
Stenting is a common treatment of stenosis. One of problems of stent treatment is restenosis. Local hemodynamic factor such as low wall shear stress (WSS) is one of the reasons for restenosis. Therefore, blood flow analyses have been performed to clarify the restenosis mechanism. Fluid-Structure Interaction (FSI) is used for blood flow analysis to consider the interaction between fluid pressure and structure deformation. In this research, the effects of the deformed vessel by stenting and pulsating flow are analyzed using FSI. The stent expansion analysis was performed to obtain the deformed shape using FEM analysis software ANSYS Mechanical APDL. FSI analysis was performed to examine the effect of a pulsating vessel using ANSYS Workbench. An initial stent model was made based on the shape of before the expansion. The expanded stent model was also made based on the shape of the expanded stent. To reveal the effect of pulsatile on the blood flow after the stenosis, two boundary conditions were employed; rigid wall and FSI. Inlet flow rate was assumed to be expressed by a periodic function to reproduce the pulsating flow in the carotid artery. The results of velocity, pressure difference and WSS are shown for each model and condition. In the case of rigid wall, WSS at the stenting site is reduced by the expansion of the vessel., The Japan Society of Mechanical Engineers, Japanese

J1630201 Evaluation of a Method for Identifying Knee Joint CoR Using IMUs
YU Lu; OKUZUMI Keisuke; TAKEDA Ryo; SASAKI Katsuhiko, Mechanical Engineering Congress, Japan, 2015, "J1630201, 1"-"J1630201-4", 13 Sep. 2015
Patients suffering from knee joint damage are generally only provided with subjective, qualitative feedback form physicians. This research sets the foundation for providing a quantitative, non-invasive feedback for knee joint damage by finding the center of rotation (CoR) of the knee joint. Knee joint motion analysis is usually performed through camera based optical tracking systems. Although these standard technologies allow a complete 3-D kinematics of knee, they require a dedicated laboratory. In this research a novel method of utilizing IMUs to obtain knee CoR is proposed. The merits of utilizing IMUs derives from its compact size, short diagnose time, thus putting less burden on patients. With IMU, acceleration and angular velocity can be measured. IMUs were fixed to the thigh and shank to measure the instantaneous CoR of the knee. Since the instantaneous CoR of the knee is different during normal and damaged condition, by obtaining the instantaneous CoR of the knee, one can quantitatively evaluate the conditions of the knee and provide outcome evaluation after surgery. It was found that for extension motion, good correlation coefficient was obtained from IMU and camera. However flexion motion showed much larger result than camera. This is assumed as the effect of inertia. In addition, calculating a 3D motion in a 2D plane may be a crucial reason effecting results. However it can be concluded that utilizing IMUs to diagnose knee function is adoptable in clinical fields for its easy accessibility and less burdens on patients., The Japan Society of Mechanical Engineers, Japanese

S0220305 Self-Expandable Stent Deployment Analysis Using Advanced Shape-Memory Alloy
TOMOOKA Yukiko; SASAKI Katsuhiko; TAKEDA Ryo, Mechanical Engineering Congress, Japan, 2015, "S0220305, 1"-"S0220305-5", 13 Sep. 2015
This paper describes an effect of using new ferrous polycrystalline shape-memory alloy showing huge superelasticity and higher stiffness as a self-expanding stent material. In this research, stent deployment analysis was conducted by using finite element analysis (FEM) software ANSYS 15.0. Nitinol self-expanding stents are widely used for artery stenosis treatments due to their high flexibility. However, the radial stiffness of self-expanding stents is low compared to balloon-expanding stents. Stent, artery, plaque, and sheath models were made for FEM analyses and the analytical results after deployment of nitinol and ferrous alloy stents were compared. In addition, two methods of the unsheathing were studied: (1) the conventional method where a stent comes out from one end of the sheath and (2) a new method in which stent comes out from the center of the sheath. FEM results showed that the radial force of the stent made of the new ferrous alloy was higher than those of nitinol. Meaning that the ferrous alloy stent displaces the plaque more than the nitinol stent. Furthermore, the plaque was displaced more using the new method of unsheathing, and the ends of the artery without the plaque showed smaller displacement. These results suggest the effectiveness of using the ferrous alloy for self-expanding stent., The Japan Society of Mechanical Engineers, Japanese

G0200303 Graphical User Interface for H-Gait and Gait Application for Treadmill Walking and Snow Road Walking
FUJISAWA Tadashi; TAKEDA Ryo; TODOH Masahiro; TOHYAMA Harukazu; TADANO Shigeru, Mechanical Engineering Congress, Japan, 2015, "G0200303, 1"-"G0200303-5", 13 Sep. 2015
The 'H-Gait' is a wearable sensor based gait analysis system intended for evaluating the walking ability of a person. The work reported here proposes to advance the 'H-Gait' system by addressing some key features of usability and investigating the effects of walkways on gait. First, the usability issue has been addressed by developing a bespoke GUI for 'H-Gait'. This GUI was capable of showing a step by step gait measurement operation manual through graphic illustrations and presenting the result of the gait analysis by a moving 3D wire frame model in addition to gait parameters. Second, the walkway effects were investigated by comparing the kinematic and spatio-temporal parameters obtained from 'H-Gait' system of normal overground, treadmill and snow road walking. It was found that treadmill walking decreased the stride by 2.2% and increased the cadence by 3.0% when compared with those of overground. The result of regression analysis of each lower joint angle between overground and treadmill walking showed more than 0.89 correlation coefficient and more than 0.95 coefficient of determination. This means there were no significant difference between overground and treadmill walking. It was found that snow road walking increased ankle dorsi-flexion angle at toe-off by 20% and hip flexion angles' mean absolute difference by 10deg., The Japan Society of Mechanical Engineers, Japanese

脛骨変位に抗して膝前十字靱帯大腿骨付着部線維へ伝達される力はその部位によって異なる Roboticsを用いた生体力学研究
河口 泰之; 近藤 英司; 武田 量; Halewood Camilla; 秋田 恵一; Amis Andrew A; 安田 和則, 日本整形外科学会雑誌, 89, 8, S1434, S1434, Sep. 2015
(公社)日本整形外科学会, Japanese

B205 The Effect of Different Ligament Reconstruction on Knee Joint Range of Movement and Load
OKUZUMI Keisuke; TAKEDA Ryo; Yu Lu; SASAKI Katsuhiko, Proceedings of the ... JSME Conference on Frontiers in Bioengineering, 2014, 25, 115, 116, 02 Oct. 2014
The Japan Society of Mechanical Engineers, Japanese

S0220204 Effect of balloon shape in treatment of eccentric plaque considering the changes in stent surface roughness
SYAIFUDIN Achmad; TAKEDA Ryo; SASAKI Katsuhiko, Mechanical Engineering Congress, Japan, 2014, "S0220204, 1"-"S0220204-4", 07 Sep. 2014
The changes in physical surface condition after expansion of balloon expandable stent are known as the primary cause of some serious problem following narrowed arteries treatment. The shape of a balloon in the treatment of eccentric plaque, which is majority form of plaque, is hypothesized influencing stent surface roughness. In this paper, the influence of the balloon shape on the changes in surface roughness will be observed using finite element method. Transient nonlinear structural analyses of eccentric plaque are built to identify the deformation. General-purpose software of finite element method such as ANSYS is used for the structural analyses. Material properties utilized in the simulation are 316 stainless steel for the stent; polyethylene terephthalate (PET) for the balloon; hypo cellular for the plaque; and carotid artery for the vessel wall. 3D symmetrical model will be developed in order to reduce computational time. Type Palmaz stent is determined for modeling in the structural analysis. Type cylindrical and offset balloon shape is chosen in the analysis, which one gives better treatment for eccentric plaque. The eccentric plaque is designed having a slight longer length than the stent, which is covering almost 75% blood vessel hole so that covers in one side of vessel wall surface and another side is allowed free from plaque disruption. The material models are defined as multilinear isotropic for stent and hyperelastic for the balloon, plaque, and arterial wall. The finite element analysis indicated that offset balloon shape succeeds to reduce stress intensity area on the vessel wall and helps to improve foreshortening and dogboning effects. Nevertheless, several structural developments of Palmaz stent should be conducted to adapt the expansion direction of offset balloon because its directional expansion also increase plastic deformation of another stent struts., The Japan Society of Mechanical Engineers, English

G0210104 Knee Joint Center of Rotation Estimation using Inertial Sensor
TAKEDA Ryo; YU Lu; OKUZUMI Keisuke; SASAKI Katsuhiko, Mechanical Engineering Congress, Japan, 2014, "G0210104, 1"-"G0210104-4", 07 Sep. 2014
This paper proposes a novel method for estimating the knee joint center of rotation (CoR) using inertial sensors. The inertial sensors used in this work contain tri-axial accelerometers and gyroscopes. The inertial sensors are attached to the femur and tibia segments of the leg and are capable of measuring the acceleration and angular in all 3 axes simultaneously. The angular velocity data was used to calculate the rotation angle around the CoR and the centrifugal acceleration was used to calculate the distance from the inertial sensor to the CoR. Experiments were carried out in two stages: preliminary pendulum experiment and measuring the flexion-extension motion of the human knee. In both experiments the accuracy of the sensor's distance to the CoR was evaluated. The preliminary pendulum experiment showed correlation coefficient (CC) of over 0.99 whereas the human flexion-extension motion showed lower CC and the average absolute error was about 5.1 cm. Improvements such as a countermeasure for attachment errors/skin motion and consideration for other rotational motions such as internal-external rotation and varus-valgus rotation should be considered to further increase the accuracy of the proposed method., The Japan Society of Mechanical Engineers, Japanese

112 Bending Toughness of Silicon used for Solar Cells
FUKIYA Takafumi; SASAKI Katsuhiko; KURODA Akiyoshi; TAKEDA Ryo, 北海道支部講演会講演概要集, 2013, 52, 23, 24, 28 Sep. 2013
The Japan Society of Mechanical Engineers, Japanese

316 Implementing a Flexion Extension Motion on the Knee Joint using a Robot Manipulator
TAKEDA Ryo; Ferdinando RODRIGUEZ Y BAENA; Andrew AMIS, 北海道支部講演会講演概要集, 2013, 52, 89, 90, 28 Sep. 2013
The Japan Society of Mechanical Engineers, Japanese

111 Thermal deformation analysis of CF-A1 composite under temperature change considering the inner structure
YAMAMOTO Ken; SASAKI Katsuhiko; KURODA Akiyoshi; TAKEDA Ryo; KATAGIRI Kazuaki, The Proceedings of Conference of Hokkaido Branch, 2013, 52, 21, 22, 28 Sep. 2013
The Japan Society of Mechanical Engineers, Japanese

J164012 A Method for Measuring Knee Joint Motion Using Multifunctional Sensors
OKUZUMI Keisuke; LIU Xin; TAKEDA Ryo; SASAKI Katsuhiko, Mechanical Engineering Congress, Japan, 2013, "J164012, 1"-"J164012-5", 08 Sep. 2013
This paper presents a method of measuring knee joint motion for clinical diagnostic procedures. MRI or optical tracking methods are examples of existing methods to quantify diagnostic procedures for assessing knee joint ligament injury. However, these methods require a large amount of space and are quite expensive. An alternative method is to use multifunctional sensors which contain tri-axial accelerometers and gyroscopes. Accelerometers can measure the tilt angle against the gravity vector and estimate the translational acceleration. Gyroscopes can measure the angle of rotary motion. An angle obtained by a gyroscope is normally influenced by noise; causing a bias in angle. This work presents a system using a Kalman filter to remove the bias angle obtained by the gyroscope. Experiments that measure three rotary motions and a translational motion of the knee joint were conducted. Sensors are mounted on the Tibia and Femur bone of a knee joint model. It was found that the bias of the gyroscope's output was minimized in all three rotary motions by applying the proposed system. In addition, translational distance was calculated by integrating the accelerometer's output. However, distance obtained by acceleration is significantly influenced by noises due to double integration. A method to process the acceleration data and obtain translational distance is also proposed., The Japan Society of Mechanical Engineers, Japanese

B209 Biomechanical Stability Tests on Knee Cruciate Ligaments using 6 DoF Manipulator Robot
Takeda Ryo; Kawaguchi Yasuyuki; Rodriguez y Baena Ferdinando; Amis Andrew, Proceedings of the ... JSME Conference on Frontiers in Bioengineering, 2012, 23, 143, 144, 04 Oct. 2012
The Japan Society of Mechanical Engineers, Japanese

携帯型センサーシステムによる3次元歩行解析手法の開発
武田量; 但野茂; 東藤正浩; 吉成哲, 生体医工学, 47, 3, 323, 324, 10 Jun. 2009
日本生体医工学会, Japanese

630 Gait Analysis of the Lower Limbs using Acceleration and Angular Velocity of the Thigh and Shank
TAKEDA Ryo; TADANO Shigeru; TODOH Masahiro; NATORIGAWA Akiko; YOSHINARI Satoshi, バイオエンジニアリング講演会講演論文集, 2008, 21, 473, 474, 22 Jan. 2009
The Japan Society of Mechanical Engineers, Japanese

305 3-D Gait Analysis Considering Abdominal Rotation
MIYAGAWA Hiroaki; TAKEDA Ryo; YOSHINARI Satoshi; TADANO Shigeru, The Proceedings of Conference of Hokkaido Branch, 2009, 0, 77, 78, 2009
The Japan Society of Mechanical Engineers, Japanese

B419 Gait analysis using the gravitational acceleration measured by wearable sensor system
TAKEDA Ryo; TADANO Shigeru; TODOH Masahiro; YOSHINARI Satoshi, Proceedings of the ... JSME Conference on Frontiers in Bioengineering, 2008, 19, 167, 168, 22 Sep. 2008
The Japan Society of Mechanical Engineers, Japanese

3636 Gait Analysis Using Acceleration and Gyro Sensors
NATORIGAWA Akiko; TAKEDA Ryo; TODOH Masahiro; TADANO Shigeru; YOSHINARI Satoshi, The proceedings of the JSME annual meeting, 2008, 7, 213, 214, 02 Aug. 2008
This work proposes a method that can measure the three-dimensional positions of joint centers for hip, knee and ankle using wearable acceleration and gyro sensors. Healthy volunteers wore small sensor unit that included a tri-axis acceleration sensor and three single axis gyro sensors. Acceleration data from acceleration sensors and angular velocity data from gyro sensors to were used to estimate joint angles of the hip and knee. The joint angles along with the volunteers' body measurements were used to calculate positions of hip, knee and ankle joint. Flexion-extension angle and internal-e..., The Japan Society of Mechanical Engineers, Japanese

A109 Gait Analysis Using Accelerometer and Gyrosensor
TAKEDA Ryo; TADANO Shigeru; NAKAYASU Minoru; TODOH Masahiro; YOSHNARI Satoshi, Proceedings of the ... JSME Conference on Frontiers in Bioengineering, 2006, 17, 19, 20, 10 Nov. 2006
The Japan Society of Mechanical Engineers, Japanese

医療画像を基にした数値シミュレーション と大動脈ファントムモデルよる血流動態 評価
武田 量; 黒澤 光; 小西 冬馬; 本田 真也; 佐々木 克彦; 大島 伸行; 山 博一; 上出 英輔; 髙嶋 英厳; 伊達 宏昭
日本機械学会 第36回バイオフロンティア講演会, 06 Dec. 2025, Japanese, Oral presentation
06 Dec. 2025 - 07 Dec. 2025

胸部CT画像からの解離を有する大動脈のモデルベース迅速セグメンテーション
菊地悠斗; 伊達宏昭; 金井理; 武田量; 佐々木克彦; 大島信行; 横山博一; 高嶋英厳; 上出英輔
電子情報通信学会の医用画像研究会, 04 Dec. 2025, Japanese, Poster presentation
04 Dec. 2025 - 05 Dec. 2025

Analysis of Hemodynamic Parameters in the Left Atrial Appendage Using Open-Source CFD
武田量; 杉山太一; 佐々木克彦; 本田真也; 大島伸行; 横山博一; 髙嶋英厳; 上出英輔; 伊達 宏昭
日本機械学会 第38回計算力学講演会（CMD2025）, 25 Sep. 2025, Japanese, Oral presentation
24 Sep. 2025 - 25 Sep. 2025

Pulsation experiments on artificial blood vessels to verify the accuracy of blood flow analysis
小西 冬馬; 武田 量; 佐々木 克彦; 本田 真也; 横山 博一; 大島 伸行; 伊達 宏昭; 高嶋 英厳; 上出 英輔
日本機械学会 2025年度年次大会, 09 Sep. 2025, Japanese, Poster presentation
07 Sep. 2025 - 10 Sep. 2025

INVESTIGATION INTO THE HEMODYNAMIC EFFECTS OF THE LEFT ARTRIAL APPENDAGE GEOMETRY
Takeda, Ryo; Sugiyama, Taichi; Honda, Shinya; Sasaki, Katsuhiko; Yokoyama, Hiroichi; Oshima, Nobuyuki; Takashima, Hideyoshi; Kamide, Eisuke; Date, Hiroaki
ESB 2025 - 30th Congress of the European Society of Biomechanics, 07 Jul. 2025, English, Oral presentation
06 Jul. 2025 - 09 Jul. 2025

Analysis of blood flow in the ascending aorta and experiments using a prototype artificial blood vessel
Toma KONISHI; Ryo TAKEDA; Katsuhoko SASAKI; Shinya HONDA; Hiroichi YOKOYAMA; Nobuyuku OSHIMA; Hiroaki DATE; Hideyoshi TAKASHIMA; Eisuke KAMIDE
日本機械学会 北海道学生会 第54回学生員卒業研究発表講演会, 05 Mar. 2025, Japanese, Oral presentation
05 Mar. 2025 - 05 Mar. 2025

〔Major achievements〕Development of software as a medical device from an engineering perspective
Ryo Takeda
The 27th Hokkaido University and Seoul National University Joint Symposium, 27 Nov. 2024, English, Invited oral presentation
27 Nov. 2024 - 27 Nov. 2024, [Invited]

〔Major achievements〕The importance of numerical estimation and experimental verification of clinical applicable biomechanical research: from blood vessels to ligament tissues
Ryo Takeda
CURAC 2023, 23 Aug. 2023, English, Keynote oral presentation
24 Aug. 2024 - 26 Aug. 2024, [Invited]

The potential of utilizing opensource software for estimating hemodynamic parameters of the aorta
Ryo Takeda; Katsuhiko Sasaki; Shinya Honda; Hiroichi Yokoyama; Nobuyuki Oshima; Akiyoshi Kuroda; Hideyoshi Takashima; Chenyu Li; Hiroaki Date; Hiroyuki Kamiya
the 16th World Congress on Computational Mechanics and 4th Pan American Congress on Computational Mechanics, 23 Jul. 2024, English, Oral presentation
21 Jul. 2024 - 24 Jul. 2024

Elmerによる胸部大動脈解離を対象とした流体-構造連成解析
北嶋 航太; 佐々木 克彦; 武田 量; 本田 真也; 横山 博一; 大島 伸行; 黒田 明慈; 髙嶋 英厳; 李 辰宇
第35回計算力学講演会, 17 Nov. 2022, Japanese, Oral presentation

Estimating the Load State of the Knee Joint Ligament in Complex Movements
Ikumi UNO; Ryo TAKEDA; Katsuhiko SASAKI; Shinya HONDA
日本機械学会 第34回バイオエンジニアリング講演会, 25 Jun. 2022, Japanese, Poster presentation
25 Jun. 2022 - 26 Jun. 2022

Development of an experimental platform for evaluating aortic numerical simulation
Kotaro FUNAMIZU; Ryo TAKEDA; Katsuhiko SASAKI; Shinya HONDA; Hiroichi YOKOYAMA; Nobuyuki OSHIMA; Akiyoshi KURODA; Hideyoshi TAKASHIMA; Chenyu LI
日本機械学会 第34回バイオエンジニアリング講演会, 25 Jun. 2022, Japanese, Poster presentation
25 Jun. 2022 - 26 Jun. 2022

曲線状強化繊維を有する異形複合材の振動最適化
才脇武; 本田真也; 佐々木克彦; 武田量
日本機械学会北海道支部第51回学生員卒業研究発表講演会, 05 Mar. 2022, Japanese, Oral presentation
05 Mar. 2022 - 05 Mar. 2022

大動脈疾患治療評価用の実験プラットフォームの開発
船水光太郎; 武田量; 佐々木克彦; 本田真也; 横山博一; 大島伸之; 黒田明慈; 高嶋英厳
日本機械学会北海道支部第51回学生員卒業研究発表講演会, 05 Mar. 2022, Japanese, Oral presentation
05 Mar. 2022 - 05 Mar. 2022

加工状態推定のための有限要素法による孔空け加工シミュレーション
東野颯真; 本田真也; 佐々木克彦; 武田量; 鶴谷知洋; 戸羽篤也; 鈴木逸人; 植竹亮太
日本機械学会北海道支部第51回学生員卒業研究発表講演会, 05 Mar. 2022, Japanese, Oral presentation
05 Mar. 2022 - 05 Mar. 2022

ベイズ最適化を用いた有孔複合材平板の最適設計
北澤元気; 本田真也; 佐々木克彦; 武田量
日本機械学会北海道支部第51回学生員卒業研究発表講演会, 05 Mar. 2022, Japanese, Oral presentation
05 Mar. 2022 - 05 Mar. 2022

Estimating the Load State of the Knee Joint Ligaments using Finite Element Method
Ikumi UNO; Ryo TAKEDA; Katsuhiko SASAKI; Shinya HONDA
日本機械学会北海道支部第51回学生員卒業研究発表講演会, 05 Mar. 2022, Japanese, Oral presentation

Evaluating the Stability of the Knee joint through Finite Element Analysis and Ligament Strength
Ryo Takeda; Kodai Watanabe; Shinya Honda; Katsuhiko Sasaki
HU-SNU Joint Symposium in the fields of Mechanical and Aerospace Engineering, 17 Dec. 2021, Japanese, Public symposium

膝関節十字靭帯の支持力シミュレーション
渡邉 航大; 武田 量; 佐々木 克彦; 本田 真也
2021年度塑性加工学会東北・北海道支部 若手研究発表会, 13 Dec. 2021, Japanese, Oral presentation

AFP による製造を想定した複合材構造 の自己組織化マップを用いた多目的設計探査
花谷 孔明; 本田 真也; 佐々木 克彦; 武田 量
Dynamics and Design Conference 2021（D&D2021）, 16 Sep. 2021, Japanese, Oral presentation

The effects of a constituent material optimized self-expanding stent on stenosis
武田 量; 嘉陽 侑人; 佐々木 克彦; 本田 真也
日本機械学会 M&M2021材料力学カンファレンス, 15 Sep. 2021, Japanese, Oral presentation

Splitting tensile simulation of particle reinforced composite
牧野 圭佑; 大山 航汰; 佐藤 亘; 本田 真也; 高橋 航圭; 佐々木 克彦; 武田 量
日本機械学会 2021年度 年次大会, 07 Sep. 2021, Japanese, Oral presentation

Stent Geometry Optimization for In-stent Restenosis Prevention through Fluid-Structure Interaction Analysis
Varien Janitra Nuralif Susanto; Katsuhiko Sasaki; Shinya Honda; Ryo Takeda
The 5th International Conferences on Mechanical Engineering, 26 Aug. 2021, English, Oral presentation

Investigating the Aortic Dissection Hemodynamic Parameters using Numerical Simulation
Ryo Takeda
The 5th International Conferences on Mechanical Engineering, 26 Aug. 2021, English, Invited oral presentation
[Invited]

Development of knee joint cruciate ligament simulator considering geometry and material properties
宮武 綾香; 武田 量; 佐々木 克彦; 本田 真也
日本機械学会北海道支部第50回学生員卒業研究発表講演会, 05 Mar. 2021, Japanese, Oral presentation

Stanford A 型大動脈解離の流体構造連成解析
佐藤 史弥; 陳 俊男; 武田 量; 本田 真也; 佐々木 克彦; 大島 伸行; 横山 博一; 黒田 明慈; 高嶋 英厳; 李 辰宇
日本機械学会 2020年度年次大会, 16 Sep. 2020, Japanese, Oral presentation
13 Sep. 2020 - 16 Sep. 2020

膝関節十字靭帯の形状及び力学特性を考慮した有限要素モデ ルの開発
渡邉 航大; 武田 量; 佐々木 克彦; 本田 真也
日本機械学会 2020年度年次大会, 16 Sep. 2020, Japanese, Oral presentation
13 Sep. 2020 - 16 Sep. 2020

内側側副靭帯の長さ変化を考慮した膝関節シミュレーション モデルの開発
武田 量; 篠原 駿; 佐々木 克彦; 本田 真也
日本機械学会 2020年度年次大会, 16 Sep. 2020, Japanese, Oral presentation
13 Sep. 2020 - 16 Sep. 2020

オープンソースソフトウェアーを用いた大動脈解離の流体構造連成解析
陳 俊男; 佐々木 克彦; 本田 真也; 武田 量; 大島 伸行; 黒田 明慈; 横山 博一; 李 辰宇; 高嶋 英厳
日本機械学会 第 32 回計算力学講演会(CMD2019), 17 Sep. 2019, Japanese, Oral presentation
講演番号118, [Domestic Conference]

膝関節屈曲角度による膝内側靭帯組織長の変化
篠原 駿; 佐々木 克彦; 本田 真也; 武田 量
日本機械学会年次大会2019, 09 Sep. 2019, Japanese, Poster presentation
講演番号J04223P13, [Domestic Conference]

自己拡張ステントの構成材料と変形特性の関係
嘉陽 侑人; 佐々木 克彦; 本田 真也; 武田 量
日本機械学会年次大会2019, 09 Sep. 2019, Japanese, Oral presentation
講演番号J02315, [Domestic Conference]

粒子群最適化による非弾性構成モデルの材料パラメータ評価
水沼 千尋; 佐々木 克彦; 本田 真也; 武田 量
日本機械学会年次大会2019, 09 Sep. 2019, Japanese, Poster presentation
講演番号J04231P11, [Domestic Conference]

大動脈解離タイプを考慮した CFD による血流シミュレーション
佐藤 史弥; 武田 量; 佐々木 克彦; 大島 伸行; 横山 博一; 本田 真也
日本機械学会年次大会2019, 09 Sep. 2019, Japanese, Oral presentation
講演番号J02701, [Domestic Conference]

成形時の反り最小化を目的とした積層複合材パッドアップ部の最適設計
樋口 哲也; 本田 真也; 佐々木 克彦; 武田 量
日本機械学会年次大会2019, 09 Sep. 2019, Japanese, Poster presentation
講演番号J04218P09, [Domestic Conference]

RBF ネットワークによる繊維強化複合材の逐次近似最適化
中谷 翔太; 本田 真也; 佐々木 克彦; 武田 量
日本機械学会年次大会2019, 09 Sep. 2019, Japanese, Poster presentation
講演番号J04218P08, [Domestic Conference]

電着樹脂含浸法を用いて作製した炭素繊 維複合材の振動特性
橋本 直暉; 本田 真也; 片桐 一彰; 佐々木 克彦; 武田 量
日本機械学会 D&D2019, 27 Aug. 2019, Japanese, Oral presentation
講演番号103, [Domestic Conference]

CFRP により軽量化された農薬散布ブ ームスプレーヤの振動特性
玉木 覚; 本田 真也; 星野 洋平; 佐々木 克彦; 武田 量
日本機械学会 D&D2019, 27 Aug. 2019, Japanese, Oral presentation
講演番号102, [Domestic Conference]

Length Change Patterns of the Medial Ligaments of the Knee
Shun Shinohara; Lukas Willinger; Kiron Athwal; Andy Williams; Andrew Amis
ISB/ASB 2019, 31 Jul. 2019, English, Poster presentation
Presentation 3-1101, [International presentation]

Development of Knee Joint Finite Element Analysis Model considering Ligament Geometry and Material Properties
Ryo Takeda; Makoto Genma; Katsuhiko Sasaki
ISB/ASB 2019, 31 Jul. 2019, English, Poster presentation
Presentation 3-1114, [International presentation]

Sequential Approximate Optimization for Fibrous Composites by using RBF Network
Shota Nakaya; Shinya Honda; Katsuhiko Sasaki; Ryo Takeda
The 9th East Asia Mechanical and Aerospace Engineering Workshop, 01 Jun. 2019, English, Oral presentation
[International presentation]

Variable-Stiffness Composite manufactured by using Electro-Activated Deposition Resin Molding Method
Naoki Hashimoto; Shinya Honda; Kazuaki Katagiri; Katsuhiko Sasaki; Ryo Takeda; Shimpei Yamaguchi; Sonomi Kawakita
The 9th East Asia Mechanical and Aerospace Engineering Workshop, 01 Jun. 2019, English, Oral presentation
[International presentation]

熱間プレスによる任意形状繊維を有する熱可塑性複合材シェルの作製
橋本健吾; 本田真也; 佐々木克彦; 武田量
日本材料学会第68期学術講演会, 25 May 2019, Japanese, Oral presentation
講演番号115, [Domestic Conference]

トポロジー最適化により設計されたバルーン拡張ステ ントの変形特性評価
小関美季; 佐々木克彦; 本田真也; 武田量
日本材料学会第68期学術講演会, 25 May 2019, Japanese, Oral presentation
講演番号111, [Domestic Conference]

Investigating the effects of aortic dissection through 3D CT image segmentation and CFD
Ryo Takeda; Kodai Kijima; Hiroichi Yokoyama; Katsuhiko Sasaki; Nobuyuki Oshima; Akiyoshi Kuroda
The 8th East Asia Mechanical and Aerospace Engineering Workshop, 01 Dec. 2018, English, Keynote oral presentation
pp74, [International presentation]

Development of a method to evaluate the effects of aortic dissection through CFD and CT image geometry extraction
Ryo Takeda; Kodai Kijima; Hiroichi Yokoyama; Katsuhiko Sasaki; Nobuyuki Oshima; Akiyoshi Kuroda
8th World Congress of Biomechanics, 11 Jul. 2018, English, Poster presentation
P3586, [International presentation]

Development of a knee joint structural analysis method considering joint geometry and ligament bundles loads
Ryo Takeda; Makoto Genma; Katsuhiko Sasaki
8th World Congress of Biomechanics, 09 Jul. 2018, English, Poster presentation
P1671, [International presentation]

Plastic Mechanics Aspects of Knee Joint Ligament Bundle Damage Risk
Ryo Takeda; Shun Shinohara; Makoto Genma; Katsuhiko Sasaki
2018 JSTP Spring Conference, 01 Jun. 2018, Japanese, Oral presentation
講演論文集 pp41-42, [Domestic Conference]

流体解析による大動脈解離後の血流評価および壁面せん断応力の推定
木島雄大; 武田量; 横山博一; 黒田明慈; 大島伸行; 佐々木克彦
日本機械学会 第28回バイオフロンティア講演会, 28 Oct. 2017, Japanese, Oral presentation
バイオフロンティア講演会講演論文集 2B24, [Domestic Conference]

ステント留置を考慮した冠動脈の流れ・変形連成解析
佐々木智義; 武田量; 黒田明慈; 佐々木克彦
日本機械学会 第28回バイオフロンティア講演会, 28 Oct. 2017, Japanese, Oral presentation
バイオフロンティア講演会講演論文集 2B32, [Domestic Conference]

靭帯繊維束の支持力を考慮した膝関節構造解析手法の開発
弦間慎; 武田量; 佐々木克彦
日本機械学会北海道支部 第55回講演会, 17 Sep. 2017, Japanese, Oral presentation
北海道支部講演会講演概要集 pp1, [Domestic Conference]

Joint Trajectories ㏌ the Transverse Plane During Gait using H-GAIT System
Laura Gastaldi; Valentina Agostini; Valeria Rosso; Ryo Takeda; Shigeru Tadano
The 26th Congress of the International Society of Biomechanics, 23 Jul. 2017, English, Poster presentation
Abstract Book P082, [International presentation]

Comparison of the Load Contribution of the Knee Joint Ligament Bundles: Computational Modelling vs Desmotomy
Ryo Takeda; Lu Yu; Makoto Genma; Katsuhiko Sasaki
The 26th Congress of the International Society of Biomechanics, 23 Jul. 2017, English, Oral presentation
Abstact Book P290, [International presentation]

Simultaneous wireless measurement of lower limb muscle activities and gait kinematics using EMG telemeter with H-Gait system
Ryo Takeda; Yoshihiro Seki; Masahiro Todoh; Masahide Harada; Harukazu Tohyama; Shigeru Tadano
The 26th Congress of the International Society of Biomechanics, 23 Jul. 2017, English, Oral presentation
Abstact Book P321, [International presentation]

Gait measurements in the transverse plane using a wearable system: An experimental study of test-retest reliability
Valeria Rosso; Laura Gastaldi; Valentina Agostini; Ryo Takeda; Shigeru Tadano
2017 IEEE International Instrumentation and Measurement Technology Conference, 22 May 2017, English, Oral presentation
[International presentation]

Effect of Stent Mesh Structure on its Flexibility, Trackability and Conformability
Achmad Syaifudin; Ryo Takeda; Katsuhiko Sasaki
The 16th International Conference on Biomedical Engineering, 07 Dec. 2016, English, Oral presentation
[International presentation]

Lower leg muscle activity during gait cycle phases using H-Gait system with EMG telemeter
Yoshihiro Seki; Ryo Takeda; Masahide Harada; Harukazu Tohyama; Shigeru Tadano
The 16th International Conference on Biomedical Engineering, 07 Dec. 2016, English, Oral presentation
[International presentation]

プラーク特性を考慮した自己拡張ステントの変形解析
境野達也; 佐々木克彦; 黒田明慈; 武田量
日本機械学会 第27回バイオフロンティア講演会, 23 Oct. 2016, Japanese, Oral presentation
[Domestic Conference]

H-GAITとEMGテレメータを用いた歩行中の下肢筋活動
関善裕; 武田量; 原田証英; 遠山晴一; 東藤正浩; 但野茂
日本機械学会 第27回バイオフロンティア講演会, 23 Oct. 2016, Japanese, Oral presentation
[Domestic Conference]

膝関節靭帯切離術による線維束支持力測定
武田量; 于路; Palomino Alberto; 佐々木克彦
日本機械学会 第27回バイオフロンティア講演会, 22 Oct. 2016, Japanese, Oral presentation
[Domestic Conference]

The Load Contributions of the Double Bundles Within the ACL and PCL using DOF Release Fixture
Ryo Takeda; Keisuke Okuzumi; Katsuhiko Sasaki
22nd Conference of the European Society of Biomechanics, 10 Jul. 2016, English, Oral presentation
[International presentation]

Gait Analysis of OA Patients using Wearable Gait Sensors (H-GAIT SYSTEM)
Ryo Takeda
22nd Conference of the European Society of Biomechanics, 10 Jul. 2016, English, Oral presentation
[International presentation]

Cutting Studyと筋骨格膝シミュレータによる膝関節靭帯束支持力の推定
武田 量; 于路; 佐々木克彦
日本材料学会 第65期学術講演会, 29 May 2016, Japanese, Oral presentation
[Domestic Conference]

Estimation of the CoM and CoP using a 3D Body Scanning Systems
Daniele Borzelli; Laura Gastaldi; Stefano Pastorellli; Alberto Botter; Taian Vieira; Junpei Takagi; Ryo Takeda; Shigeru Tadano
2016 IEEE International Symposium on Medical Measurements and Applications, 15 May 2016, English, Oral presentation
[International presentation]

Technical Challenges using Magneto-inertial Sensors for Gait Analysis
Laura Gastaldi; Valentina Agostini; Valentina Gabola; Maria Macarena Lovagnini Frutos; Valeria Rosso; Ryo Takeda; Marco Knaflitz; Shigeru Tadano
2016 IEEE International Symposium on Medical Measurements and Applications, 13 May 2016, English, Oral presentation
[International presentation]

The Measurements of the Anterior Cruciate Ligament Bundles on the Knee Joint Load
Yuki Hirano; Ryo Takeda; Katsuhiko Sasaki
28th Bioengineering Conference, 09 Jan. 2016, Japanese, Oral presentation
[Domestic Conference]

Measuring the load distribution of ACL bundle fibers using a robot system
Ryo Takeda
The 42nd. Annual Meeting of the Japanese Society for Clinical Biomechanics, 14 Nov. 2015, Japanese, Nominated symposium
[Invited], [Domestic Conference]

The Effect of PCL Bundles on Knee Joint Stability
Ryo Takeda; Keisuke Okuzumi; Katsuhiko Sasaki
26th Conference on Frontiers in Bioengineering, 02 Oct. 2015, Japanese, Oral presentation
[Domestic Conference]

A Novel Drift Removal Method for Gait Analysis Using Wearable Sensor Systems
Ryo Takeda; Giulia Lisco; Tadashi Fujisawa; Laura Gastaldi; Stefano Pastorelli; Harukazu Tohyama; Shigeru Tadano
The 8th Asian-Pacific Conference on Biomechanics, 16 Sep. 2015, English, Oral presentation
[International presentation]

Investigations of the Load Contributions of the PM and the AL Bundles of the PCL
Ryo Takeda; Keisuke Okuzumi; Yasuyuki Kawaguchi; Katsuhiko Sasaki
The 8th Asian-Pacific Conference on Biomechanics, 16 Sep. 2015, English, Poster presentation
[International presentation]

Evaluation of a Method for Identifying Knee Joint CoR Using IMUs
Lu Yu; Keisuke Okuzumi; Ryo Takeda; Katsuhiko Sasaki
The 8th Asian-Pacific Conference on Biomechanics, 16 Sep. 2015, English, Poster presentation
[International presentation]

Mechanical Influence of Advanced Shape-Memory Alloy Stents during Deployment
Yukiko Tomooka; Katsuhiko Sasaki; Ryo Takeda
The 8th Asian-Pacific Conference on Biomechanics, 16 Sep. 2015, English, Poster presentation
[International presentation]

Development of Asymmetric Stent for Treatment of Eccentric Plaque
Achmad Syaifudin; Katsuhiko Sasaki; Ryo Takeda
The 8th Asian-Pacific Conference on Biomechanics, 16 Sep. 2015, English, Poster presentation
[International presentation]

Investigation of the Load Contributions of the Anterior Cruciate Ligament Bundles against Degree of Freedom Release
Ryo Takeda; Keisuke Okuzumi; Katsuhiko Sasaki
The 25th Congress of the International Society of Biomechanics 2015, 12 Jul. 2015, English, Oral presentation
[International presentation]

Gait Analysis of TKA Patients at 2 Weeks and 4 Weeks after Surgery using Wearable Sensors
Ryo Takeda; Tadashi Fujisawa; Giulia Lisco; Laura Gastaldi; Stefano Pastorelli; Harukazu Tohyama; Shigeru Tadano
The 25th Congress of the International Society of Biomechanics 2015, 12 Jul. 2015, English, Oral presentation
[International presentation]

Is the load carried from the ACL mid-substance fibers during anterior tibial translation transmitted to the posterior fan-like extension fibers on the femoral attachment?
Yasuyuki Kawaguchi; Kazunori Yasuda; Eiji Kondo; Ryo Takeda; Camilla Halewood; Keiichi Akita; Andrew A Amis
ISAKOS Congress 2015, 07 Jun. 2015, English
[International presentation]

The Effects of Anterior Cruciate Ligament Bundles on Knee Joint Stability
Ryo Takeda; Keisuke Okuzumi; Katsuhiko Sasaki
64th JSMS Academic Meeting, 23 May 2015, Japanese, Oral presentation
[Domestic Conference]

The Most Important Fibers In The Femoral Attachment Of The Anterior Cruciate Ligament For Resisting Tibial Displacements
Yasuyuki Kawaguchi; Eiji Kondo; Ryo Takeda; Camilla Halewood; Keiichi Akita; Kazunori Yasuda; Andrew A Amis
ORS 2015 Annual Meeting, 28 Mar. 2015, English, Poster presentation
[International presentation]

The Effect of Different Ligament Reconstruction on Knee Joint Range of Movement and Load
Keisuke Okuzumi; Ryo Takeda; Yu Lu; Katsuhiko Sasaki
25th Conference on Frontiers in Bioengineering, 03 Oct. 2014, Japanese, Oral presentation
[Domestic Conference]

ロボットマニピュレーターを用いた膝関節屈曲伸展動作の再現
武田 量; Ferdinando Rodriguez y Baena; Andrew Amis
日本機械学会北海道支部 第52回講演会, 27 Sep. 2014, Japanese, Oral presentation
[Domestic Conference]

Knee Joint Center of Rotation Estimation using Inertial Sensor
Ryo Takeda; Lu Yu; Keisuke Okuzumi; Katsuhiko Sasaki
Mechanical Engineering Congress, 2014 Japan, 07 Sep. 2014, Japanese, Oral presentation
[Domestic Conference]

Gait parameter changes of TKA patients in both legs at 2 and 4 weeks after surgery
Tadashi Fujisawa; Ryo Takeda; Katsuhiro Tanaka; Giulia Lisco; Laura Gastaldi; Stefano Pastorelli; Jiazhi Guo; Harukazu Tohyama; Shigeru Tadano
7th World Congress on Biomechanics, 06 Jul. 2014, English, Poster presentation
[International presentation]

Drift removal of gyro sensor for accurately measuring human gait from acceleration and angular velocity data
Ryo Takeda; Giulia Lisco; Tadashi Fujisawa; Harukazu Tohyama; Shigeru Tadano; Laura Gastaldi; Stefano Pastorelli
7th World Congress on Biomechanics, 06 Jul. 2014, English, Poster presentation
[International presentation]

Development of a novel method to detect the pivot shift within the knee using angular velocity and acceleration measurements
Keisuke Okuzumi; Ryo Takeda; Katsuhiko Sasaki
7th World Congress on Biomechanics, 06 Jul. 2014, English, Poster presentation
[International presentation]

The most important load-bearing fibers in the femoral attachment of the anterior cruciate ligament for resisting tibial anterior drawer force and internal-external rotation torque
Yasuyuki Kawaguchi; Eiji Kondo; Ryo Takeda; Camilla Halewood; Keichi Akita; Kazunori Yasuda; Andrew Amis
16th ESSKA Congress, 14 May 2014, English, Oral presentation
[International presentation]

Development of a Robotic Testing Platform for Investigating Knee Joint Ligament Force Contributions during Various Flexion Extension Angles
Ryo Takeda; Ferdinando Rodriguez y Baena; Andrew Amis
The 15th International Conference on Biomedical Engineering, Abstacts, Dec. 2013, Oral presentation

Deformation analysis of balloon expanded stent during and after its expansion considering viscoplasticity and vessel pulsation
Achmad Syaifudin; Katsuhiko Sasaki; Ryo Takeda
The 15th International Conference on Biomedical Engineering, Abstacts, Dec. 2013, Oral presentation

Flexion-extension Knee Joint Motion Implementation Using a 6 Axis Robotic Manipulator Platform
Ryo Takeda; Ferdinando Rodriguez y Baena; Andrew Amis
The International Symposium on Interdisciplinary Research and Education on Medical Device Developments, Sep. 2013, English, Oral presentation

多機能センサによる膝関節運動の測定方法
奥住 啓介; 劉 鑫; 武田 量; 佐々木 克彦
日本機械学会 2013年度年次大会 講演論文集, Sep. 2013, Oral presentation

ロボットマニピュレーターを用いた膝関節屈曲伸展動作の再現
武田 量; Ferdinando Rodriguez y Baena; Andrew Amis
日本機械学会北海道支部 第52回講演会 講演概要集, Sep. 2013, Oral presentation

Implementing an Anterior Posterior Drawer Motion on a Knee Joint using a 6 DoF Manipulator Robot and a 6 Axis Force/Torque Sensor
Ryo Takeda; Ferdinando Rodriguez y Baena; Andrew Amis
Proceedings of the 7th Asian Pacific Conference on Biomechanics, Aug. 2013, English, Oral presentation

6自由度ロボットマニピュレーターを用いた膝十字靭帯の安定性試験
Ryo Takeda; Yasuyuki Kawaguchi; Ferdinando Rodriguez y Baena; Andrew Amis
23rd Conference on Frontiers in Bioengineering, 04 Oct. 2012, Japanese, Oral presentation
[Domestic Conference]

加速度・角速度センサによる三次元歩行解析
宮川寛亮; 武田量; 但野茂
日本機械学会年次大会講演論文集, 04 Sep. 2010, Japanese

体幹部回旋運動を考慮した三次元歩行解析
宮川寛亮; 武田量; 吉成哲; 但野茂
日本機械学会北海道支部講演会講演概要集, 28 Nov. 2009, Japanese

携帯型センサーシステムによる3次元歩行解析手法の開発
武田量; 但野茂; 東藤正浩; 吉成哲
生体医工学, 10 Jun. 2009, Japanese

大腿部と下腿部の加速度・角速度を利用した歩行解析
武田量; 但野茂; 東藤正浩; 名取川愛紀子; 吉成哲
21st Bioengineering Conference, 22 Jan. 2009, Japanese, Oral presentation
[Domestic Conference]

携帯型センサーシステムによる重力加速度を用いた歩行解析
武田量; 但野茂; 東藤正浩; 吉成哲
日本機械学会バイオフロンティア講演会講演論文集, 22 Sep. 2008, Japanese

Gait Analysis Using Acceleration and Gyro Sensors
NATORIGAWA AKIKO; TAKEDA RYO; TODO MASAHIRO; TADANO SHIGERU; YOSHINARI SATOSHI
日本機械学会年次大会講演論文集, 02 Aug. 2008, Japanese

GAIT ANALYSIS USING WIRELESS ACCELERATION SENSORS AND GYRO SENSORS(1B3 Orthopaedic & Rehabilitation Biomechanics III)
Takeda Ryo; Tadano Shigeru; Todoh Masahiro; Yoshinari Satoshi
Proceedings of the ... Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics, 05 Nov. 2007, English

加速度センサーと角速度センサーを用いた歩行解析
武田量; 但野茂; 中安稔; 東藤正浩; 吉成哲
日本機械学会バイオフロンティア講演会講演論文集, 10 Nov. 2006, Japanese

大学院共通授業科目（教育プログラム）：One program for Global Goals, 2024年, 修士課程, 大学院共通科目

大学院共通授業科目（教育プログラム）：One program for Global Goals, 2024年, 修士課程, 大学院共通科目

工業英語演習, 2024年, 学士課程, 工学部

機械加工学実習, 2024年, 学士課程, 工学部

Establishment of a patient-specific aortic treatment evaluation method based on mechanical parameters
Grants-in-Aid for Scientific Research
Apr. 2025 - Mar. 2028
Ryo TAKEDA
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, Principal investigator, 25K07493

植物空力予測のためのデジタルプラットフォームの構築
2025年度 学際大規模情報基盤共同利用・共同研究拠点(JHPCN)公募型共同研究課題
Apr. 2025 - Mar. 2026
高橋裕介; 武田量; 中島大賢; 友部遼; 前田将輝
一般財団法人 高度情報科学技術研究機構, 北海道大学, Coinvestigator, jh250024

大動脈解離を対象としたステントグラフト留置術の治療効果を評価するための流体-構造連成解析を基としたシミュレーションソフトウェアの開発
令和6 (2024) 年度 橋渡し研究戦略的推進プログラム シーズA
Apr. 2024 - Mar. 2025
武田 量; 佐々木克彦; 大島伸行; 伊達宏昭; 紙谷寛之; 横山博一; 髙嶋英厳; 上出英輔
国立研究開発法人日本医療研究開発機構, 北海道大学, Principal investigator, A184

植物空力予測のためのデジタルプラットフォームの構築
2024年度 学際大規模情報基盤共同利用・共同研究拠点(JHPCN)公募型共同研究課題
Apr. 2024 - Mar. 2025
高橋裕介; 武田量; 中島大賢; 友部遼; 前田将輝; Sanjoy Kumar Saha
一般財団法人 高度情報科学技術研究機構, 北海道大学, Coinvestigator, jh240047

流体-構造連成解析を基にした大動脈解離シミュレーション手法の発展
2024年度 学際大規模情報基盤共同利用・共同研究拠点(JHPCN)公募型共同研究課題
Apr. 2024 - Mar. 2025
武田量; 佐々木克彦; 大島伸行; 横山博一; 黒田明慈; 柴田良一; 高橋裕介; 髙嶋英厳; 李辰宇
一般財団法人 高度情報科学技術研究機構, 北海道大学, Principal investigator, jh240082

大動脈解離の治療効果を評価するための流体-構造連成解析を基としたシミュレーションソフトウェアの開発
令和5 (2023) 年度 橋渡し研究戦略的推進プログラム シーズA
Apr. 2023 - Mar. 2024
武田 量; 佐々木克彦; 大島伸行; 伊達宏昭; 紙谷寛之; 横山博一; 髙嶋英厳; 李辰宇
国立研究開発法人日本医療研究開発機構, 北海道大学, Principal investigator

流体-構造連成解析を基にした大動脈解離シミュレーションモデルの構築
2023年度 学際大規模情報基盤共同利用・共同研究拠点(JHPCN)公募型共同研究課題
Apr. 2023 - Mar. 2024
武田量; 佐々木克彦; 大島伸行; 横山博一; 黒田明慈; 柴田良一; 高橋裕介; 髙嶋英厳; 李辰宇
一般財団法人 高度情報科学技術研究機構, 北海道大学, Principal investigator

Evaluation of Aortic Dissections and Treatment Methods using Numerical Simulation
FY 2022 Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructures (JHPCN)
Apr. 2022 - Mar. 2023
武田量; 佐々木克彦; 大島伸行; 横山博一; 黒田明慈; 柴田良一; 高橋裕介; 髙嶋英厳; 李辰宇
Research Organization for Information Science and Technology, Hokkaido University, Principal investigator, jh220026

Evaluating the Effectiveness of Stent Graft Treatment for Aortic Dissection using Fluid-Structure Interaction
FY 2021 Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructures (JHPCN)
Apr. 2021 - Mar. 2022
武田量; 佐々木克彦; 大島伸行; 横山博一; 黒田明慈; 柴田良一; 高橋裕介; 髙嶋英厳; 李辰宇
Research Organization for Information Science and Technology, Hokkaido University, Principal investigator

Development of knee joint stability evaluation method considering joint synovial fluid
Grant-in-Aid for Scientific Research (C)
Apr. 2019 - Mar. 2022
Ryo Takeda
Japan Society for the Promotion of Science, Principal investigator, Competitive research funding

Development of Fluid-Structure Interaction Analysis for Aortic Dissection Risk Assessment
FY 2020 Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructures (JHPCN)
Apr. 2020 - Mar. 2021
Ryo Takeda; Katsuhiko Sasaki; Nobuyuki Oshima; Masaharu Munetomo; Takeshi Iwashita; Hirokazu Yokoyama; Akiyoshi Kuroda; Ryoichi Shibata; Yusuke Takahashi
Research Organization for Information Science and Technology, Hokkaido University, Principal investigator

Development of knee joint ligament rupture simulator based on load and geometrical conditions
Grant-in-Aid for Young Scientists (B)
Apr. 2017 - Mar. 2019
Ryo Takeda
The knee ligament rupture mechanism based on the mechanical load condition and the geometry was analyzed. First, a knee joint ligament experimetal setup consisting of a universal material testing machine, a knee joint fixation jig, and a thermo‐hygrostat chamber was created. Porcine stifle joint was used as a substitute knee joint. The knee model was set in the knee joint fixation jig, and the load was measured via a force sensor located between the material testing mechine and the joint fixation jig.The material testing machine applied a cyclic displacement to the knee model until the ligament was damaged.Then the mechanical property values,such as the load,required for ligament damage was determined. Furthermore, the ligament geometry was extracted from MRI by an image segmentation process. Based on the obtained mechanical properties and geometry of the ligaments, a finite element analysis model capable of reproducing knee joint ligament loads was constructed.
Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Hokkaido University, Principal investigator, Competitive research funding, 17K14554

Interpreting the knee joint ligament reconstruction rupture mechanism from a mechanical dynamics point of view
Mazda Research Grant
2016 - 2018
Ryo Takeda
The Mazda Foundation, Principal investigator, Competitive research funding

Departure from the Asian waterway vulnerability based on the correlation between watershed environments and hydrological information
Grant for Environmental Research Projects
Nov. 2015 - Oct. 2017
Shunitz Tanaka; a; o; a; Ryo Taked
The Sumitomo Foundation, Principal investigator, Competitive research funding

Development of Knee Joint Ligament Fibre Reconstruction Simulator
Sapporo Life Sciences Industry Project
Aug. 2016 - Mar. 2017
Ryo Takeda
NOASTEC, Principal investigator, Competitive research funding

Evaluation of Artificial Ligament Rupture Risk for Knee Ligament Reconstruction as seen from a Plastic Mechanics Point of View
Young Researchers Research Grant
Apr. 2015 - Mar. 2017
Ryo Takeda
The Japan Society for Technology of Plasticity, Principal investigator, Competitive research funding

Development of a Knee Joint Ligament Reconstruction Evaluation Platform
Grant-in-Aid for Young Scientists B
Apr. 2014 - Mar. 2016
Ryo Takeda
Japan Society for the Promotion of Science, Principal investigator, Competitive research funding