MYOELECTRIC CONTROL FOR A NEUROPROSTHETIC DEVICE

神经修复装置的肌电控制

• 批准号: 2719230
• 负责人: SOHEYL POURMEHDI
• 金额: $ 10万
• 依托单位: NEUROCONTROL CORPORATION
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-05 至 1999-09-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2719230
• 关键词: biomedical equipment development; clinical biomedical equipment; clinical research; electrodes; electromyography; electrostimulus; human subject; implant; nervous system prosthesis; neuromuscular stimulator; spinal cord injury

The purpose of this project is to investigate the use of myoelectric signals as a control source for an existing hand-grasp neuroprosthesis system. The existing method of controlling is based on a chest-mounted, shoulder position transducer system. With the proposed device, control signals could be derived from weak myoelectric activity, making it possible for patients without sufficient shoulder mobility to use the neuroprosthesis. The emphasis of this project will be placed on attaining command signals that allow proportional control. Stimulus artifact will be removed from the myoelectric signal by signal blanking, band-pass filtering, and electrical isolation between stimulating and sensing circuits. The processed myoelectric signals will be interfaced to the control unit of the existing neuroprosthesis. A preliminary clinical study will be conducted with individuals having high level of tetraplegia and also with the users of the existing implanted hand system. We propose to use percutaneous intramuscular electrodes to sense myoelectric activity during Phase I of the project. These electrodes will be implanted by a hypodermic needle and can easily be withdrawn at the end of use. Feasibility of the project shall be determined by the performance of the prototype device. PROPOSED COMMERCIAL APPLICATIONS: The implantable device controlled by myoelectric signals can be prescribed to many patients with spinal cord injury. This new system will allow us to expand our market to patients with spinal cord lesions at C4 or higher levels. The existing external shoulder transducer will be removed; and the system will become more acceptable for the patients. The use of this device will lower the cost of attendant care and improve the quality of life of the patient.

这个项目的目的是研究肌电的使用 信号作为现有手抓式神经假体的控制源 系统。现有的控制方法是基于胸部安装的， 肩部位置传感器系统。使用建议的设备，控制 信号可能来自微弱的肌电活动，使其 肩关节活动度不足的患者可以使用 神经假体。这个项目的重点将放在 获得允许比例控制的命令信号。刺激 伪影将通过信号消隐从肌电信号中去除， 带通滤波，刺激和电隔离 感应电路。处理后的肌电信号将被对接 到现有神经假体的控制单元。初赛 临床研究将在具有较高水平的 四肢瘫痪和现有植入手的使用者 系统。我们建议使用经皮肌肉内电极来检测 项目第一阶段期间的肌电活动。这些电极 将通过皮下注射针植入，可以很容易地在 使用的终结。该项目的可行性应由 样机的性能。 建议的商业应用： 由肌电信号控制的可植入装置可以 开给许多脊髓损伤患者的处方。这一新系统 将使我们能够将我们的市场扩展到脊髓损伤患者 C4或更高级别。现有的外部肩部换能器将 被移除；该系统将变得更容易被患者接受。 该设备的使用将降低乘务员护理的成本并提高 病人的生活质量。