Design of SMA Actuator Based Access Device for Transanal Endoscopic Microsurgery
Hongyan Luo1, 2, *, Eric Abel2, Alan Slade2, Zhigang Wang2, Robert Steele3
Identifiers and Pagination:Year: 2010
First Page: 42
Last Page: 48
Publisher Id: TOMDJ-2-42
Article History:Received Date: 30/5/2009
Revision Received Date: 11/6/2009
Acceptance Date: 12/6/2009
Electronic publication date: 19/1/2010
Collection year: 2010
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
An access device using a combination of a compression coil spring made of NiTi shape memory alloy (SMA) and NiTi superelastic strips has been developed. Particular consideration is given to the application of the concept in transanal endocopic microsurgery (TEM), but it could be used in other procedures where tissue expansion is required. In TEM, it could realize the gasless dilation of the rectum with safety and reliability, and facilitate surgeons to perform TEM. The theoretical design procedure to determine the specifications of the NiTi SMA spring and superelastic components is established. The feasibility and the possible problems associated with this application are discussed generally.