Influence of Different Sizes on Thermal Stress Field of Bipolar High-Frequency Electric Knife
10.16156/j.1004-7220.2019.02.11
- VernacularTitle:不同尺寸参数对双极高频电刀热应力场的影响
- Author:
Haipo CUI
1
;
Jiaping HUANG
1
;
Chengli SONG
1
;
Yu ZHOU
1
Author Information
1. Shanghai Institute for Minimally Invasive Therapy, University of Shanghai for Science and Technology
- Publication Type:Journal Article
- Keywords:
high-frequency electric knife;
thermal stress;
thermal deformation;
electric-thermal coupling
- From:
Journal of Medical Biomechanics
2019;34(2):E179-E185
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the influence regularities of different sizes on thermal stress field of bipolar high-frequency electric knife. Methods Based on the ANSYS software, the electric-thermal coupling simulation analysis was performed for thermal stress field of bipolar high-frequency electric knife during working. The effects of 3 different insulation layer thicknesses (0-5, 1-0, 1-5 mm), electrode thicknesses (0-5, 1-0, 1-5 mm) and coating thicknesses (3, 6, 9 μm) on thermal stress field of bipolar high-frequency electric knife were studied. Results If thickness of the insulation layer was larger, deformation of the myocardial tissues would be smaller due to thermal stress, that is, the thickness of the insulation layer was inversely proportional to thermal deformation of the myocardial tissue during working process of the high-frequency electric knife. For the 3 electrode thicknesses, 1-0 mm was a better choice. And for the 3 coating thicknesses, 6 μm was a better choice. Conclusions The component sizes for the high-frequency electric knife have an important influence on thermal stress field, and the result can provide guidance for design of the high-frequency electric knife.
