Study of Insertion Force and Deformation for Suturing With Precurved NiTi Guidewire-Reference-Cited by-同舟云学术

Study of Insertion Force and Deformation for Suturing With Precurved NiTi Guidewire

Published:2015-04-01 Issue:4 Volume:137 Page:
ISSN:0148-0731
Container-title:Journal of Biomechanical Engineering
language:en
Short-container-title:

Author:

Wang Yancheng¹,Chen Roland K.²,Tai Bruce L.³,Xu Kai⁴,Shih Albert J.⁵

Affiliation:

1. State Key Lab of Fluid Power Transmission and Control, Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China e-mail:

2. Mem. ASME Mechanical Engineering, University of Michigan, 1043E HH Dow, 2300 Hayward St., Ann Arbor, MI 48109 e-mail:

3. Mem. ASME Mechanical Engineering, University of Michigan, 1043A HH Dow, 2300 Hayward St., Ann Arbor, MI 48109 e-mail:

4. UM-SJTU Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China e-mail:

5. Fellow ASME Mechanical Engineering and Biomedical Engineering, University of Michigan, 3001E EECS, 2350 Hayward St., Ann Arbor, MI 48109 e-mail:

Abstract

This research presents an experimental study evaluating stomach suturing using a precurved nickel–titanium (NiTi) guidewire for an endoscopic minimally invasive obesity treatment. Precise path planning is critical for accurate and effective suturing. A position measurement system utilizing a hand-held magnetic sensor was used to measure the shape of a precurved guidewire and to determine the radius of curvature before and after suturing. Ex vivo stomach suturing experiments using four different guidewire tip designs varying the radius of curvature and bevel angles were conducted. The changes in radius of curvature and suturing force during suturing were measured. A model was developed to predict the guidewire radius of curvature based on the measured suturing force. Results show that a small bevel angle and a large radius of curvature reduce the suturing force and the combination of small bevel angle and small radius of curvature can maintain the shape of guidewire for accurate suturing.

Publisher

ASME International

Subject

Physiology (medical),Biomedical Engineering

Link

http://asmedigitalcollection.asme.org/biomechanical/article-pdf/doi/10.1115/1.4029311/6091613/bio_137_04_041004.pdf

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