Design, Simulation and Experimental Study of a Novel Radiofrequency Tissue Welding Electrode
10.16156/j.1004-7220.2023.03.26
- VernacularTitle:新型射频组织焊接电极的设计、仿真与实验研究
- Author:
Xupo XING
1
;
Zhongxin, HU
1
;
Zhengyi HAN
1
;
Chengli SONG
1
;
Lin MAO
1
Author Information
1. School of Health Science and Engineering, University of Shanghai for Science and Technology
- Publication Type:Journal Article
- Keywords:
radiofrequency tissue fusion;
novel electrode;
intestinal anastomosis;
tissue thermal damage
- From:
Journal of Medical Biomechanics
2023;38(3):E601-E607
- CountryChina
- Language:Chinese
-
Abstract:
Objective Aiming at improving biomechanical strength of the anastomotic stoma as well as reducing tissue thermal damage, a novel radiofrequency (RF) tissue welding electrode was developed. Methods A novel electrode with a hollow structure on the surface ( the plum electrode) was designed and the ring electrode was used as control group to conduct the welding of intestinal tissues based on RF energy. Biomechanical properties of anastomotic stoma were studied by shear test and burst pressure test. The tissue thermal damage during welding was investigated by finite element electro-thermal-mechanical multi-field coupling simulation analysis and thermocouple probe, and the tissue microstructures were also studied. Results Under 120 W RF energy, 8 s welding duration and 20 kPa compression pressure, the anastomotic stoma had the optimal biomechanical properties. Compared with the ring electrode group, biomechanical strength of the anastomotic stoma in plum electrode group was higher, with the shear strength and burst pressure increasing from (9. 7±1. 47) N, (84. 0±5. 99) mmHg to (11. 1±1. 71) N, (89. 4±6. 60) mmHg, respectively. There was a significant reduction in tissue thermal damage, and intact and fully fused stomas could be formed in anastomotic area. Conclusions The proposed novel electrode could improve biomechanical strength of the anastomosis as well as reduce tissue hermal damage, thus achieve better fusion. The research result provide references for realizing the seamless connection of human lumen tissues
