An artificial anal sphincter based on a novel clamping mechanism: Design, analysis, and testing. Issue 8 (8th April 2021)

• Record Type: Journal Article
• Authors: Han, Ding; Yan, Guozheng; Wang, Zhiwu; Jiang, Pingping; Liu, Dasheng; Zhao, Kai; Ma, Jin
• Is Part Of: Artificial organs. Volume 45:Issue 8(2021)
• Page Start: E293
• Page End: E303
• Publication Date: 2021-04-08
• Subjects: artificial anal sphincter -- clamping mechanism -- dynamics analysis -- in vitro experiments -- kinematics analysis; Artificial organs -- Periodicals; 617.956
• DOI: 10.1111/aor.13924
• Languages: English
• ISSNs: 0160-564X

Abstract

Abstract: 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. Abstract : The clamping mechanism is the key part of the artificial anal sphincter based on a novel clamping mechanism (AASNCM) system.The receiving coil offers power to the whole system. Control unit embedded in the clamping mechanism is the brain of the system to send and receive signals.