Design of an SMA embedded clamp for endoscopic surgery

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part II

Article type: Research Article

Authors: Zhao, Shuang^{a; b} | Luo, Yun^{a; *} | Wang, Minghui^a

Affiliations: [a] State Key Laboratory of Mechanical Systems and Vibration, Institute of Biomedical Manufacturing and Life Quality Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Rd., Shanghai 200240, China | [b] School of Mechanical Engineering, Shanghai Dian Ji University, 1201 Jiang Chuan Rd., Shanghai, China

Correspondence: [*] Corresponding author. Tel./Fax: +86 021 3420 6078; E-mail: [email protected]

Abstract: Control of clamping pressure on blood vessel is a commonly concerned issue in minimally invasive surgeries. While complicated sensing-feedback-control systems are developed for clamping in robotic surgeries, a simple mechanism for the pressure control is desired. In this paper, we propose a new structure of endoscopic forceps to solve the problem of nonlinear relation between the clamping pressure and grasping force. A shape memory alloy (SMA) wire embedded endoscopic clamp is proposed to control the clamping pressure within a safe range. A typical configuration of the clamp is designed based on the discussion on the detailed geometric dimension of SMA wires and blood vessels.

DOI: 10.3233/JAE-2010-1209

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 973-978, 2010