自膨式医用支架径向力学性能的测试技术  

Test Method to Verify Radial Mechanical Features of Self-expanding Stent

作　　者：黄研昕[1] 

机构地区：[1]东南大学,江苏南京210096

出　　处：《工程与试验》2009年第4期43-45,共3页Engineering and Test

摘　　要：支架技术是广泛应用于临床的高科技医学工程技术,但目前支架成品力学性能检验技术不成熟,造成支架质量检验缺少力学及安全性能试验方法。本文介绍了应用张力法测定自膨式医用内支架成品径向力学性能的检测方法,讨论了医用内支架的径向力学性能,为控制支架设计及质量提供了新的手段,同时对支架技术规范的制订具有重要意义。Nowadays, stent therapy is widely adopted to treat atherosclerotic vessel diseases. Stent is classified as either balloon-expanding or self-expanding. This paper summarizes some of the key differences between self-expanding stent and balloon-expanding stent, and describes the ra- dial forces, radial stiffness and radial mechanical features of stent. In this paper, a method based on the Tensile Force method （TFM） is proposed to study stent radial mechanical features. Tensile tests under displacement control in the expanded configuration were carried out. This system can be utilized to verify strains of the outside wall of the stent.

关 键 词：支架 径向强度 径向支撑力 检测 质量控制 

分 类 号：R318.6[医药卫生—生物医学工程]