SINGLE CHANNEL HYBRID FES GAIT SYSTEM

单通道混合 FES 步态系统

• 批准号: 7296356
• 负责人: WILLIAM K DURFEE
• 金额: $ 17.16万
• 依托单位: UNIVERSITY OF MINNESOTA
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-15 至 2009-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7296356
• 关键词: Address; Arts; Automobile Driving; Computer software; Daily; Electric Stimulation; Engineering; Fatigue; Force of Gravity; Gait; Hybrids; Individual; Joints; Laboratory Research; Metric; Muscle Fatigue; Orthotic Devices; Outcome; Paralysed; Paraplegia; Persons; Publishing; Research; Side; Solutions; Spinal cord injury; Surface; System; Testing; Volition; Walking; Wheelchairs; Work; clinical efficacy; design; desire; human subject; innovation; novel strategies; prototype; restoration

DESCRIPTION (provided by applicant): The long-term objective of this research is to develop a mobility aid for persons with paraplegia caused by spinal cord injury that combines functional electrical stimulation (FES) with a unique, energy storing orthosis (ESO). The ESO captures energy from the stimulated quadriceps and pipes the energy to other joints for controlled mobility. The main innovation of the ESO approach over prior hybrid FES systems is that it uses only a single channel of stimulation which should positively impact ease of use and acceptance by users. Restoration of even primitive gait is important to many individuals with paraplegia. While wheelchairs provide functional, daily mobility, there remains a need for assistive aids that enable people to stand and walk in the vicinity of a wheelchair. FES for mobility has been researched for over 40 years yet still is not a feasible option for most because of limitations of fatigue, control and ease of use. The ESO is a new approach designed to address all three limitations by using a single channel of surface stimulation on each side to drive multiple joints and an orthosis that can be controlled and can provide anti-gravity support to reduce stimulated muscle fatigue. Because the ESO approach is new, technical feasibility must be demonstrated before undertaking a demonstration of clinical efficacy. Therefore, the objective of this project is to prove feasibility with two aims. Aim 1 is to design and prototype the ESO hardware, software and control system and to conduct bench tests to evaluate its engineering specifications. Aim 1 is design driven and its successful outcome will be marked by demonstrating a working prototype. Aim 2 is to evaluate the prototype in the research laboratory using two human subjects with paraplegia. The hypothesis driving Aim 2 is that the two ESO users will achieve gait that is the same or better than gait with existing FES-aided gait solutions, including existing hybrid FES gait system that combine FES with an orthosis. Comparisons will be done by comparing walking metrics for the two subjects to published metrics for prior art systems. Many people who are paralyzed because of spinal cord injury have a desire to stand and walk under their own volition, even if the resulting mobility is primitive and within the vicinity of a wheelchair. The proposed approach for FES-aided gait is new and may provide choices for a wider pool of people with SCI than current solutions.

描述（由申请人提供）：本研究的长期目标是为脊髓损伤引起的截瘫患者开发一种将功能性电刺激 (FES) 与独特的储能矫形器 (ESO) 相结合的行动辅助工具。 ESO 从受刺激的股四头肌捕获能量，并将能量输送到其他关节以控制活动性。与之前的混合 FES 系统相比，ESO 方法的主要创新在于它仅使用单一刺激通道，这将对用户的易用性和接受度产生积极影响。对于许多截瘫患者来说，恢复原始步态也很重要。虽然轮椅提供了功能性的日常移动性，但仍然需要辅助工具，使人们能够在轮椅附近站立和行走。针对移动性的 FES 已经研究了 40 多年，但由于疲劳、控制和易用性方面的限制，对于大多数人来说仍然不是一个可行的选择。 ESO 是一种新方法，旨在通过在每侧使用单通道表面刺激来驱动多个关节以及可控制并提供反重力支持以减少刺激肌肉疲劳的矫形器来解决所有三个限制。由于 ESO 方法是新的，因此在证明临床疗效之前必须证明技术可行性。因此，该项目的目标是证明可行性，有两个目标。目标 1 是设计 ESO 硬件、软件和控制系统并进行原型设计，并进行台架测试以评估其工程规格。目标 1 是设计驱动的，其成功结果将通过展示工作原型来标志。目标 2 是在研究实验室中使用两名截瘫人类受试者来评估原型。驱动目标 2 的假设是，两个 ESO 用户将实现与现有 FES 辅助步态解决方案（包括将 FES 与矫形器相结合的现有混合 FES 步态系统）的步态相同或更好的步态。将通过将两个受试者的步行指标与现有技术系统的已公布指标进行比较来进行比较。许多因脊髓损伤而瘫痪的人都希望能够根据自己的意愿站立和行走，即使由此产生的活动能力很原始并且在轮椅附近。所提出的 FES 辅助步态方法是新的，与当前的解决方案相比，可能为更多的 SCI 患者提供选择。