旨在设计一种新型的腹腔镜手术器械分离钳,使分离钳的操作手柄端与夹持钳头部可以实现快速分离对接.在手术过程中要求起主要作用的夹持钳头部可以留在人体腹腔对坏死组织进行夹持剥离,而操作手柄可以取出,从而给手术医师留有更多的手术操作空间.手术结束后手术医师可以操作手柄在人体腹腔与夹持钳头部实现快速对接,方便快捷地取出夹持钳头部,保障手术的顺利进行.本文主要设计方法是改进传统手术器械分离钳的头部,在其夹子顶端焊接有六角铆钉.同时模拟医用手术夹子,在设计新型钳夹尺寸之后,在手术夹子尾部开有六角通孔,其尺寸与分离钳夹头部的六角铆钉刚好可以配合,从而实现分离钳与夹持钳的快速分离与对接.并通过ANSYS有限元软件分析钳夹在夹取组织的过程中所受的应力分布情况.研究分析表明所设计的新型手术器械分离钳在实现快速分离与对接的前提条件下,同时能满足钳夹对组织血管的夹持作用,从而保证手术的安全进行.%The study aims to design a new type of laparoscopic surgical instruments separation forceps,so that the operating handle of the forceps and clamp head can achieve a fast separation and docking.Clamping forceps are required to stay in the peritoneal cavity of the human body for the clamping and detachment of the necrotic tissue,and the operating handle can be removed,leaving the surgeon with more room for surgical operation.After surgery,the surgeon can manipulate the handle in the human abdominal cavity and clamp head to achieve a fast docking,which can rapidly and conveniently remove the clamp head and ensure the smooth operation.The main design in our study is to improve the traditional surgical instruments clamp head,welding hexagonal rivets in the top of the forceps.Simulating medical surgical clip,after the design of a new clamp size,the hexagonal hole is slotted in the rear of the surgical clip,and the holes size matches with the hexagonal rivet of separation forceps head to achieve the fast separation and docking of separation forceps and clamping forceps.The distribution of stress in the process of gripping tissue is analyzed with ANSYS finite element software.The results showed that the design of the new surgical instruments separation forceps can achieve a rapid separation and docking,and successfully clamp the tissue blood vessels,ensuring the safety of the operation.
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