Low-Power Consumption Design and Optimization of New Artificial Anal Sphincter

doi:10.16183/j.cnki.jsjtu.2020.199

Abstract

Abstract:

Based on the hardware of the new artificial anal sphincter system, this paper analyzes the power consumption of each module. After low-power consumption design and reasonable setting of the sampling period, the system power consumption is significantly reduced. At the same time, the area under the rectal pressure waveform is used as the standard for judging defecation willingness. Instead of the single-point pressure threshold method, it provides a basis for anal incontinence patients to go to the toilet, and thus improves the accuracy of the rectal perception function. Combining in vitro and in vivo experiments, the low-power consumption of the artificial anal sphincter designed in this paper can extend the working time of the system to 16 d after a single charge. It increases the working time by 230% with a rectal perception accuracy of 96%.

Key words: artificial anal sphincter, low-power rectal perception, rectal pressure waveform, low-power wake-up, in vivo experiment

CLC Number:

YAO Shengjian, YAN Guozheng, WANG Zhiwu, ZHOU Zerun, JIANG Pingping, DING Zifan, HUA Fangfang, ZHAO Kai, HAN Ding. Low-Power Consumption Design and Optimization of New Artificial Anal Sphincter[J]. Journal of Shanghai Jiao Tong University, 2021, 55(7): 899-906.

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模块名称	I_w/mA	I_s/μA
电源模块	1.00	30
传感器模块	10.05	0
通讯模块	31.02(发送)/18.50(接收)	1
电机模块	169.44	0
单片机模块	1.10	24

模块名称	工作模式		待机模式
模块名称	t_o1/min	t_s1/min	t_o2/min	t_s2/min
电源模块	30	0	0	1410
传感器模块	0	30	0	1410
通讯模块	1.8705(发送)/ 28.1295(接收)	0	87.9135 (发送)	1322.0865
电机模块	0.3	29.7	0	1410
单片机模块	30	0	87.9135	1322.0865