基于射频感应控制的掌指人工关节研究

STUDY ON THE ARTIFICIAL MP JOINT UNDER THE CONTROL OF RF FIELD

针对目前临床上存在大量掌指臂丛神经损伤患者无法医治的状况 ,提出了通过植入带有驱动电机的掌指人工关节来行使掌指功能的治疗方案。文中研究了植入式人工关节的结构、机械传动、控制信号的获取和传输等。为解决驱动电机的电源问题 ,作者提出了运用电磁感应的经皮能量传输技术来驱动植入电机的旋转 ,利用反映掌指动作意识的肌电信号来控制射频磁场的发射 ,使得体内线圈感应体外射频磁场后驱动电机转动。最后研究了一套临床关节植入的手术方案 ,并在三例尸体上进行了功能实验 ,验证了植入的人工关节能满足人体掌指的基本功能。

In order to solve the problem that presently a number of patients with brachial plexus disease resulting in injury of metacar pofhalangeal joint are cureless, the paper describes a scheme that performs the functions of MP joint by implanting artificial joint with electrical drive. In this paper, some issues such as the structure of the implanting artificial joints, mechanical transmission and the acquest and transfer of controlling signal are discussed. To solve the problem of power supply for the electrical drive, the author adopts the transcutaneous energy transmission technology that makes use of electromagnetic induction to impel the implanted electrical drive to rotate. By detecting the EMG that reflects the behavioral consciousness of MP joint, the external RF field was irradiated and inducted by the implanted coils to control the rotation of the electrical drive. An operating scheme of clinical joint implantation has been researched and experimented on three cadavers. The results revealed that the implanted artificial joints could fulfill the daily function of humans MP joint.