Multifunction Prosthesis Control using Implanted Sensors

使用植入传感器的多功能假肢控制

• 批准号: 6944262
• 负责人: RICHARD Fergus ffrench WEIR
• 金额: $ 75.38万
• 依托单位: NORTHWESTERN UNIVERSITY AT CHICAGO
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-30 至 2008-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6944262
• 关键词: artificial limbs; assistive device /technology; biological signal transduction; biomedical device power system; biosensor device; biotechnology; cats; clinical research; electrodes; electromyography; electrophysiology; human subject; implant; magnetism; mathematics; medical implant science; medical rehabilitation related tag; muscle function; orthotics; patient oriented research; technology /technique development; telemetry

DESCRIPTION (provided by applicant): The limitation of current prostheses is not the devices themselves but rather the lack of sufficient independent control sources. A system capable of reading intra muscular EMG signals would greatly increase the number control sources available for prosthesis control. Current state-of-the-art electric prosthetic hands are generally single DOF (opening/closing) devices often implemented with EMG control. Current prosthetic arms requiring multi-DOF control most often use sequential control. As currently implemented, sequential control is slow. We propose to develop a multichannel/multifunction prosthetic hand/arm controller system capable of receiving and processing signals from up to sixteen implanted bipolar differential electromyographic (EMG) electrodes. An external prosthesis controller will use fuzzy-logic to decipher user intent from telemetry sent over a transcutaneous magnetic link by the implanted electrodes. The same link will provide power for the implanted electrodes. . Northwestern University will develop the multifunctional prosthesis controller and perform the animal experiments necessary to demonstrate the implanted devices. . Rehabilitation Institute of Chicago will perform animal experiments and help with human subject experiments. . Illinois Institute of Technology will develop individually addressable integrated circuit EMG sensor packages. Each sensor will be housed in BION(r) hermetically sealed packages provided by the Alfred E. Mann Foundation. . Sigenics Corp. will develop the transcutaneous telemetry link, (or reader). A custom-designed application specific integrated circuit (ASIC) will "strip" the data from the link's telemetry and send it to the prosthesis controller. Powering of the implanted electrodes will also be controlled by the ASIC. The external coil of the inductive link will be laminated into a prosthetic socket. Development of each component of the system will occur in parallel. Throughout years 1 & 2 fine wire studies with human subjects will be used to develop multifunctional prosthesis control algorithms. Initial silicon for the implanted electrodes and reader ASIC will be ready by end of year 1. Packaged electrodes ready for animal testing and a prototype reader will be ready the middle of year 2. Year 3 is expected to be spent going through initial system integration and iterative test-redesign cycles. A definitive design is anticipated to be ready for final testing and tweaking by the middle of year 4. The final year will be spent conducting the final systems integration.

描述（由申请人提供）： 当前假体的局限性不在于器械本身，而在于缺乏足够的独立控制源。能够阅读肌内EMG信号的系统将大大增加可用于假肢控制的控制源的数量。目前最先进的电动假手通常是单自由度（打开/关闭）的设备，通常与EMG控制实现。目前需要多自由度控制的假肢最常使用顺序控制。如目前实施的，顺序控制是缓慢的。我们建议开发一种多通道/多功能假肢手/手臂控制器系统，能够接收和处理来自多达16个植入式双极差分肌电图（EMG）电极的信号。外部假体控制器将使用模糊逻辑从植入电极通过经皮磁链路发送的遥测中破译用户意图。同一链路将为植入电极提供电源。 .西北大学将开发多功能假肢控制器，并进行必要的动物实验，以证明植入设备。 .芝加哥康复研究所将进行动物实验，并帮助进行人体实验。 .伊利诺伊理工学院将开发可单独寻址的集成电路EMG传感器包。每个传感器将被封装在由Alfred E.曼恩基金会。 . Sigenics Corp.将开发经皮遥测链路（或读取器）。一个定制设计的专用集成电路（ASIC）将从链接的遥测数据“剥离”，并将其发送到假肢控制器。植入电极的供电也将由ASIC控制。感应链接的外部线圈将被层压到假肢接受腔中。 该系统每个组成部分的开发将并行进行。在第1年和第2年，将使用人类受试者的细导丝研究来开发多功能假体控制算法。植入电极和读取器ASIC的初始硅将在第1年年底准备就绪。包装好的电极准备进行动物试验，原型读取器将在第2年中期准备就绪。第三年预计将经历初始系统集成和迭代测试-重新设计周期。最终的设计预计将在第4年中期进行最终测试和调整。最后一年将用于进行最后的系统集成。