Scholarlink

<p>For wire-driven surgical instruments, steel wire ropes with a small diameter can experience torsional fatigue and sliding wear during the operation, leading to a reduced service life and operation safety. This study investigates the comprehensive fatigue and wear behavior of the steel wire ropes in surgical instruments and predicts their service life by integrating a mathematical model and experimental data. Fatigue testing was performed to simulate the working conditions of the wire ropes in the wire-driven system and explore its fatigue wear behaviors, and the initial tension force was set as 70&#xa0;N. During the experiment, the tension in the wire rope initially decreased gradually, after which approximately half of ropes experience fracture, while the other half witnessed an abrupt decrease in tension force. The surfaces of fatigue fractures and the wear patterns were studied with optical microscopy and scanning electron microscopy. Based on the fatigue degradation characteristics of the steel wire ropes, we fit the tension data of the wire with a stochastic process and established a proportional hazards model, combining both to calculate the survival probability. The wear characteristics of the steel wire ropes mainly included peeling, furrows, and plastic deformation, and the wear mechanisms primarily involved adhesive wear and abrasive wear. The fracture mechanisms of the steel wire rope mainly included ductile fracture under tensile load and brittle fracture under fatigue load. The results of this study offer significant theoretical guidance for improving the safety and service life of wire-driven surgical instruments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Fatigue Wear Analysis and Life Prediction of Surgical Instrument Driving Wires

  • 期刊论文

  • 发表日期：

    2025年1月27日

查看全文
  • Yuan Xing,
  • Zhenglong Liu,
  • Rui Zheng,
  • Chengcheng Cai,
  • Ercan Altinzoy,
  • Xiangyun Ren

摘要

For wire-driven surgical instruments, steel wire ropes with a small diameter can experience torsional fatigue and sliding wear during the operation, leading to a reduced service life and operation safety. This study investigates the comprehensive fatigue and wear behavior of the steel wire ropes in surgical instruments and predicts their service life by integrating a mathematical model and experimental data. Fatigue testing was performed to simulate the working conditions of the wire ropes in the wire-driven system and explore its fatigue wear behaviors, and the initial tension force was set as 70 N. During the experiment, the tension in the wire rope initially decreased gradually, after which approximately half of ropes experience fracture, while the other half witnessed an abrupt decrease in tension force. The surfaces of fatigue fractures and the wear patterns were studied with optical microscopy and scanning electron microscopy. Based on the fatigue degradation characteristics of the steel wire ropes, we fit the tension data of the wire with a stochastic process and established a proportional hazards model, combining both to calculate the survival probability. The wear characteristics of the steel wire ropes mainly included peeling, furrows, and plastic deformation, and the wear mechanisms primarily involved adhesive wear and abrasive wear. The fracture mechanisms of the steel wire rope mainly included ductile fracture under tensile load and brittle fracture under fatigue load. The results of this study offer significant theoretical guidance for improving the safety and service life of wire-driven surgical instruments.