School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai, China.
Institute of Medical Robotics, Shanghai Jiao Tong University, Shanghai, China.
Artif Organs. 2021 Aug;45(8):E293-E303. doi: 10.1111/aor.13924. Epub 2021 Apr 8.
An artificial anal sphincter is a device to help patients with fecal incontinence rebuild the ability to control the excrement through the anus. In this article, an artificial anal sphincter based on a novel clamping mechanism (AASNCM) is proposed to improve the safety and reliability. The AASNCM, which is powered by a transcutaneous energy transfer system, consists of a novel clamping mechanism, a receiving coil and a control unit. According to design requirements, the novel clamping mechanism model was established. After that, its kinematics and dynamics were analyzed. The results of force tests on the prototype AASNCM show that the maximum values of clamping force and expanding force are 15.859 and 31.029 N, respectively. Comparing the experimental results with theoretical analysis, a good match can be concluded. Finally, in vitro experiments were conducted, and have verified the safety and reliability of the proposed AASNCM.
一种人工肛门括约肌是一种帮助大便失禁患者重建通过肛门控制粪便能力的装置。本文提出了一种基于新型夹紧机构的人工肛门括约肌（AASNCM），以提高安全性和可靠性。AASNCM 由经皮能量传输系统供电，由新型夹紧机构、接收线圈和控制单元组成。根据设计要求，建立了新型夹紧机构模型，然后对其运动学和动力学进行了分析。对原型 AASNCM 的力测试结果表明，夹紧力和扩张力的最大值分别为 15.859N 和 31.029N。将实验结果与理论分析进行比较，可以得出很好的匹配。最后，进行了体外实验，验证了所提出的 AASNCM 的安全性和可靠性。
