Rolling Joint Prosthetic Leg

二期项目将完成一种新型滚动关节假肢的开发，包括滚动关节（自由流动）足和踝关节以及滚动关节假肢膝盖。这两个假体的原始设计是基于滚动关节技术，最近由申请人开发。滚动关节脚部和踝关节在1999年10月商业化。当前研究第一阶段的主要工作是设计、制造和测试新型滚动关节膝关节。第一阶段的研究结果表明，滚动关节假肢的发展值得继续发展。滚动关节膝关节的开发和测试将在拟议的第二阶段完成。将进行进一步的研究以验证经股截肢患者将受益于在滚动关节腿中装配两个滚动关节单元的假设。将开发用于假肢关键参数个体调整的新方法。它将为下肢截肢者提供更正常、更少痛苦的运动，并增加需要进行假肢治疗的患者数量。第二期项目的具体目标。完成一种新型膝关节单元原型的开发，该原型具有柔性胫骨组件；通过对20例经股截肢者进行对比力学试验和生物力学步态研究，验证具有所提出力学结果的新型假肢装置通过规范步态站立阶段的“残肢-窝”界面来改善经股截肢者步态的假设。提出的研究的长期目标是开发一个功能齐全，可靠和经济的假肢模块化系统。建议的商业应用：潜在的商业应用是创建滚动关节脚和膝盖的产品线。RJ Leg将在不增加成本的情况下提高经股截肢者的性能，从而在假肢康复领域提供极具竞争力的产品。

The Phase II project is to complete development of a new Rolling Joint Prosthetic Leg comprising a Rolling Joint (Free-Flow) Foot and Ankle and the Rolling Joint Prosthetic Knee. Original design of both prostheses is based on a Rolling Joint Technology, recently developed by the applicants. The Rolling Joint Foot and Ankle was commercialized in October of 1999. Major efforts during the Phase I of the current study were developed to design, manufacture and testing of the new Rolling Joint Knee. As results of the Phase I study showed, development of Rolling Joint Prosthetic Leg has merit to be continued. Development and testing of the Rolling Joint Knee will be completed during the Phase II proposed. Additional research will be conducted to verify the hypothesis that patients with trans-femoral amputations will benefit from aan assembly of both Rolling Joint Units in a Rolling Joint Leg. New methodology for individual tuning of critical parameters of prostheses will be developed. It will provide more normal, less painful locomotion in a lower limb amputee and increase number of patients to be managed prosthetically. The specific aims of the Phase II project. Complete a development of a new Knee unit prototype with compliant tibial component; conduct a comparative mechanical tests and biomechanical gait study with 20 trans-femoral amputees to verify the hypothesis that a new prosthetic device with the proposed mechanical outcome improves a trans-femoral amputee gait by normalizing "stump-socket" interface during stance phase of gait. Long term objectives of the proposed research are to develop a functional, reliable and economical prosthetic modular system. PROPOSED COMMERCIAL APPLICATIONS: Potential commercial application is the creation of a product line of Rolling Joint Feet and Knees. The RJ Leg will enhance performance of transfemoral amputees without increasing the cost, thus providing a highly competitive product in the field of prosthetic rehabilitation.