近年来,国外开始采用尿道内支架技术治疗前列腺增生和尿道狭窄,并取得了良好临床效果。本文对其临床应用进行扼要概述。一、支架的材料要求和种类:尿道内支架是由弹性材料制成的管状结构。插入尿道后,用来扩张和支撑狭窄的尿道管腔,解除尿路梗阻,保持尿流通畅。作为长期的体内置入物,应具备以下几项基本要求:(1)生物相容性好,无腐蚀性,不致敏,不致癌,组织耐受性强;(2)抗蚀性高,可以消毒,在体内环境中不被侵蚀;(3)表面光滑,不划伤组织,不 In recent years, foreign countries began to use urethral stent technology for benign prostatic hyperplasia and urethral stricture, and achieved good clinical results. This article gives a brief overview of its clinical application. First, the stent material requirements and types: urethral stent is made of flexible tubular material. After inserting the urethra, used to expand and support a narrow urethral lumen, urinary tract obstruction removed to maintain smooth urinary flow. As long-term in vivo implant, should have the following basic requirements: (1) biocompatibility, non-corrosive, non-allergenic, non-carcinogenic, tissue tolerance; (2) high corrosion resistance, Sterilization, is not eroded in the body environment; (3) the surface is smooth, does not scratch the tissue, no