Optimization of Hardware and Software Design for New Artificial Anal Sphincter Low Power System

Most artificial anal sphincters have a large power consumption, which is not suitable to long-term implantation of the system in the human body to help patients with anal incontinence recover. In this article, in order to reduce the system power consumption, both hardware and software optimization design have been considered. For hardware, both motor drive module and sensor module have been optimized for long-term implantation of the system in the human body. On the other side, for software, a low-power system is designed and optimized. According to the relationship between the sampling period and power consumption, the best sampling period is determined. Due to the huge difference in power consumption between the working mode and standby mode of the communication module, a new wake-up mechanism is designed for the communication module, so that the power consumption is further reduced. In the vivo experiments, the results show that the standby time can be up to 13 days when using the optimization system, which is extended significantly compared with the previous artificial anal sphincter.