Development of the functional bad bearing device for hip joint

髋关节功能性不良轴承装置的研制

• 批准号: 12794021
• 负责人: HARA Toshiaki
• 金额: $ 28.48万
• 依托单位: NIIGATA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for University and Society Collaboration
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12794021/
• 关键词: device; Perthes disease; load bearing function; Orthopaedics; hip joint; biomechanics; stress analysis; optimum design

In tins research project, new developments in orthopaedic implants and new manufacturing technologies have been closely tied for the past three years Manufacturability has been required to transform successful biomechanical and collaborated research into a successful medical product especially for Perthes disease. The device obtained its strength from Ti-6A1-4V metal alloy, its load bearing function with flexibility through special designed linkage, and its fixation through a pelvic surface though this collaboration has experienced difficulties in achieving functional effectiveness and fulfilling product design and anatomic requirements. As a results, some devices for clinical trial are currently made by the applications of redesign to earlier developed devices for this project.Experimental analysis was carried out on 7 hip models with the special designed devive, including normal joints and joints affected with Perthes diseases. Three-dimensional hip motion data on the ability of dail … More y life including evacuation and sedentary occupation for female and male was analyzed by standard gait analysis techniques, using video analysis and electrogoniometers. The results from the motion data proved the efficacy of the device and the ability of evacuation and sedentary occupation although there is the motion containment of the hip.In addition, three-dimensional femoral head contact with the acetabulum was studied to investigate the load bearing function of the device using electric conductive rubber pressure sensor systems. It was found that there was significant difference in the contact stress between joint models with/without the device.Finally we studied the theoretical stress distribution in the pelvis-device-proximal femur united model by means of a three-dimensional finite element method to determine the qualitative parameters on stress distribution in the model during gait and daily life, the deformability, and the fixational rigidity.We conclude that the university and society collaboration has been successfully carried out to develop the new orthopaedic device which has the endurability and clinical applicability and that some new technologies have demonstrated functionality, cost effectiveness, and regulatory approvability. Less

在该研究项目中，骨科植入物和新制造技术的新发展在过去三年中紧密联系在一起。将成功的生物力学和合作研究转化为成功的医疗产品，特别是Perthes病，需要可制造性。该器械的强度来自Ti-6A 1 -4V金属合金，通过特殊设计的连接获得其承载功能和灵活性，并通过骨盆表面固定，尽管这种合作在实现功能有效性和满足产品设计和解剖要求方面遇到了困难。因此，目前临床试验的一些装置是通过对早期开发的装置进行重新设计来制造的，使用特殊设计的装置对7个髋关节模型进行了实验分析，包括正常关节和Perthes病关节。髋关节三维运动数据对踝关节功能的影响 ...更多信息 通过标准步态分析技术，使用视频分析和电测角仪，分析了女性和男性的7年生活，包括疏散和久坐不动的职业。从运动数据的结果证明了该装置的有效性和疏散能力和久坐的占用，虽然有髋关节的运动containment. Further，三维股骨头接触髋臼进行了研究，调查的承载功能的装置，使用导电橡胶压力传感器系统。最后，通过三维有限元方法研究骨盆-器械-股骨近端联合模型的理论应力分布，确定步态和日常生活中模型应力分布的定性参数，变形能力，我们的结论是，大学和社会的合作已经成功地进行了开发新的骨科设备，具有可重复性和临床适用性，一些新技术已经证明了功能，成本效益和监管批准。少

项目成果

北原 恒: "複合荷重作用下のラット大腿骨の力学的評価"日本機械学会第12回バイオエンジニアリング学術講演会・秋期セミナー講演論文集. No.01-27. 115-116 (2001)

Hisashi Kitahara：“组合载荷下大鼠股骨的机械评估”第12届生物工程学术会议论文集，秋季研讨会，日本机械工程师学会No.01-27（2001）。

坂本 信: "pQCTによるラット長管骨の力学的性質"日本学術会議 メカニクス・構造研究連絡委員会 第51回理論応用力学講演会講演論文集. 169-170 (2002)

Makoto Sakamoto：“使用 pQCT 的大鼠长骨的机械特性”日本科学理事会力学和结构研究联络委员会第 51 届理论与应用力学会议记录 169-170 (2002)。

内橋 悟: "pQCTを利用したサル大腿骨頸部の強度推定"日本機械学会第15回バイオエンジニアリング講演会論文集. No.02-35. 81-82 (2002)

Satoru Uchihashi：“使用 pQCT 进行猴子股骨颈的强度估计”第 15 届日本机械工程学会生物工程会议论文集第 02-35 号（2002 年）。

山田大介: "股関節免荷デパイスの設計と開発に関する研究"第44回日本学術会議材料研究連合講演会講演論文集. 307-308 (2000)

山田大辅：《髋关节减重装置的设计与开发研究》第44届日本材料研究会学术会议论文集307-308（2000年）。

内橋悟: "pQCTによるwhole boneの力学的ねじり特性評価"日本機械学会北陸信越支部第38期総会・講演会講演論文集. No.017-1. 51-52 (2001)

内桥悟：“通过 pQCT 评估全骨的机械扭转特性”日本机械工程学会北陆信越分会第 38 届会议记录和演讲第 017-1 号（2001 年）。