[1]田云鹏,闫士举,宋成利,等.钳齿形貌对腹腔镜夹钳安全性的影响[J].中国医学物理学杂志,2020,37(6):774-779.[doi:DOI:10.3969/j.issn.1005-202X.2020.06.022]
　TIAN Yunpeng,YAN Shiju,SONG Chengli,et al.Effects of teeth profile on the safety of laparoscopic grasper[J].Chinese Journal of Medical Physics,2020,37(6):774-779.[doi:DOI:10.3969/j.issn.1005-202X.2020.06.022]
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钳齿形貌对腹腔镜夹钳安全性的影响()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
37
期数:
2020年第6期
页码:
774-779
栏目:
其他（激光医学等）
出版日期:
2020-06-25

文章信息/Info

Title:
Effects of teeth profile on the safety of laparoscopic grasper
文章编号:
1005-202X（2020）06-0774-06
作者:
田云鹏1; 闫士举1; 宋成利1; 王成勇2; 张涛2; 3
1.上海理工大学医疗器械与食品学院， 上海 200093； 2.广东工业大学机电工程学院， 广东 广州 510000； 3.宜安新材料研究院， 广东 东莞 523662
Author(s):
TIAN Yunpeng1;  YAN Shiju1;  SONG Chengli1;  WANG Chengyong2;  ZHANG Tao2; 3
1.School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China 2. Institute of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510000, China 3. Institute of Eontech New materials Co., Ltd, Dongguan 523662, China
关键词:
腹腔镜夹钳; 齿形; 等效应力; 有限元分析
Keywords:
Keywords: laparoscopic grasper teeth profile equivalent stress finite element analysis
分类号:
R318.01
DOI:
DOI:10.3969/j.issn.1005-202X.2020.06.022
文献标志码:
A
摘要:
目的：对比不同齿形腹腔镜夹钳的夹持效果，以确定其各自安全夹持组织的能力，为夹钳优化设计提供参考。方法：通过ANSYS有限元分析，对比梯形齿、钉形齿、直角楔形齿、等腰楔形齿4种齿形钳头压缩量和牵拉效果关系，并通过应变云图分析夹持能力不同的原因。以钳头夹持组织不损伤、不滑脱为判断标准，评价各齿形夹持能力。结果：直角楔形齿具有最优越的安全夹持能力，钉形齿最容易损伤组织，且其安全牵拉能力最差；梯形齿安全牵拉能力与等腰楔形齿相近，但等腰楔形齿安全压缩量更优。齿数对牵拉效果影响明显。结论：腹腔镜夹钳夹持能力取决于钳齿形貌和齿数，安全夹持性由最大应力和钳制能力共同决定。峰值应力大的齿形并不表示夹持能力强，牵拉能力应考虑钳制变形能力。
Abstract:
Abstract: Objective To analyze the clamping capabilities of laparoscopic graspers with different teeth profiles during tissue clamping operation, thereby providing valuable reference for the design of grasper. Methods ANSYS was used for finite element analysis. The relationships between the compression and the traction effect of 4 kinds of teeth profiles (trapezoidal, nail-shaped, right-angled wedge-shaped and isosceles wedge-shaped) were compared, and the reasons for different clamping capabilities were analyzed by strain nephogram. Taking the tissue clamping without damages or slippage as the standard, the clamping capabilities of different teeth profiles were evaluated. Results The right-angled wedge-shaped teeth had the best ability to clamp tissues, while the nail-shaped teeth caused damages to tissues easily and had the worst traction performance. The trapezoidal teeth and isosceles wedge-shaped teeth had similar traction performances, but the compression of isosceles wedge-shaped teeth was better. Moreover, the teeth number had obvious effects on traction performance. Conclusion The clamping capability of laparoscopic grasper depends on the profile and number of teeth and the safety of clamping tissues by laparoscopic grasper is determined by peak stress and clamping capability. The teeth profile with a high peak stress does not mean that the grasper has a strong capability of tissue clamping, and the capability of clamp deformation should be considered in the evaluation of traction capability.

备注/Memo

备注/Memo:
【收稿日期】2019-12-18 【基金项目】国家自然科学基金重点项目（51735003） 【作者简介】田云鹏，在读研究生，研究方向：精密医疗器械，E-mail: 841928442@qq.com 【通信作者】闫士举，副教授，研究方向：微创医疗器械，E-mail: yanshj99@aliyun.com
更新日期/Last Update: 2020-07-03