Zan P, Yan G, Liu H, Luo N, Zhao Y
Shanghai Jiaotong University, PR China.
J Med Eng Technol. 2009;33(2):136-41. doi: 10.1080/03091900801943205.
For controlling anal incontinence, a novel artificial anal sphincter system with sensor feedback based on transcutaneous energy transmission was developed. The device mainly comprises an artificial anal sphincter, a wireless power supply subsystem, and a communication subsystem. A transcutaneous power delivery system employing a class-E power amplifier, based on the adaptive control technique, is discussed in this paper. Amplitude modulation of the class-E power amplifier is integrated in the system and applied for the adaptive transcutaneous power delivery. Optimization of the power transfer efficiency and the misalignment tolerance is obtained. Experiments show that the system is capable of delivering at least 150 mW, with a power transfer efficiency of 41% over a distance of 3 cm, which can meet the electric power requirements of the artificial anal sphincter system. The power transfer frequency is 760 kHz.
为了控制肛门失禁，开发了一种基于经皮能量传输的具有传感器反馈的新型人工肛门括约肌系统。该装置主要包括人工肛门括约肌、无线供电子系统和通信子系统。本文讨论了一种基于自适应控制技术、采用E类功率放大器的经皮功率传输系统。E类功率放大器的幅度调制集成在系统中，并应用于自适应经皮功率传输。实现了功率传输效率和失准容限的优化。实验表明，该系统能够传输至少150毫瓦的功率，在3厘米的距离上功率传输效率为41%，能够满足人工肛门括约肌系统的电力需求。功率传输频率为760千赫兹。
