Lichter P A, Lange E H, Riehle T H, Anderson S M, Hedin D S
Koronis Biomedical Technologies Corp. 6901 E. Fish Lake Road, Suite 190, Maple Grove, MN 55369, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:5074-6. doi: 10.1109/IEMBS.2010.5626202.
Surface electrodes in modern myoelectric prosthetics are often embedded in the prosthesis socket and make contact with the skin. These electrodes detect and amplify muscle action potentials from voluntary contractions of the muscle in the residual limb and are used to control the prosthetic's movement and function. There are a number of performance-related deficiencies associated with external electrodes including the maintenance of sufficient electromyogram (EMG) signal amplitude, extraneous noise acquisition, and proper electrode interface maintenance that are expected to be improved or eliminated using the proposed implanted sensors. This research seeks to investigate the design components for replacing external electrodes with fully-implantable myoelectric sensors that include a wireless interface to the prosthetic limbs. This implanted technology will allow prosthetic limb manufacturers to provide products with increased performance, capability, and patient-comfort. The EMG signals from the intramuscular recording electrode are amplified and wirelessly transmitted to a receiver in the prosthetic limb. Power to the implant is maintained using a rechargeable battery and an inductive energy transfer link from the prosthetic. A full experimental system was developed to demonstrate that a wireless biopotential sensor can be designed that meets the requirements of size, power, and performance for implantation.
现代肌电假肢中的表面电极通常嵌入假肢接受腔并与皮肤接触。这些电极检测并放大来自残肢肌肉自主收缩产生的肌肉动作电位，用于控制假肢的运动和功能。与外部电极相关存在一些与性能有关的缺陷，包括维持足够的肌电图（EMG）信号幅度、获取外部噪声以及正确维护电极界面，预计使用所提出的植入式传感器可改善或消除这些问题。本研究旨在探究用于用完全植入式肌电传感器取代外部电极的设计组件，该传感器包括与假肢的无线接口。这种植入技术将使假肢制造商能够提供性能、功能和患者舒适度更高的产品。来自肌内记录电极的EMG信号被放大并无线传输到假肢中的接收器。通过可充电电池和来自假肢的感应能量传输链路维持植入物的供电。开发了一个完整的实验系统，以证明可以设计出满足植入尺寸、功率和性能要求的无线生物电位传感器。
