Rolling Joint Prosthetic Leg

第二阶段的项目是完成新的滚动关节假肢的开发，包括滚动关节(自由流动)脚和脚踝以及滚动关节假肢膝盖。这两个假体的原始设计都是基于申请者最近开发的滚动关节技术。滚动式脚踝关节于1999年10月商业化。在当前研究的第一阶段，主要工作是设计、制造和测试新的滚动关节膝关节。第一阶段的研究结果表明，滚动式假肢的开发具有继续发展的价值。滚动关节膝关节的开发和测试将在拟议的第二阶段期间完成。将进行更多的研究来验证这样的假设，即经股截肢的患者将受益于两个滚动关节单元在滚动关节腿中的组装。将开发新的方法来个体化调整假体的关键参数。它将为截肢者提供更正常、更少痛苦的运动，并增加需要假肢处理的患者数量。二期工程的具体目标。完成具有顺应性胫骨假体的新膝关节单元原型的开发；对20名经股骨截肢者进行比较力学测试和生物力学步态研究，以验证具有所提出的力学结果的新假体装置通过使步态站立阶段的“残肢-插座”界面正常化来改善经股截肢者步态的假设。这项研究的长期目标是开发一种实用、可靠和经济的假体模块化系统。拟议的商业应用：潜在的商业应用是创建滚动关节脚部和膝盖的产品线。RJ腿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一种极具竞争力的产品。

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.