在整个肺部疾病中,肺感染依然是目前最普遍而常见的疾病,如能确定病因,一般均可得到特异性治疗,其预后亦最为满意。长期以来,在寻找病源菌方面,虽经各种努力,但始终未能满意解决上呼吸道细菌的污染问题。近年来,由于设计了特殊的刷检装置,能成功的通过纤维支气管镜(以下简称纤支镜)在下呼吸道采取非污染标本,从而为诊断肺部感染性疾病开创了良好的途径。【器械和操作方法】刷检装置设计的基本原理是在带有尼龙刷头的金属线外,另有聚四氟乙烯(Teflon)导管保护,以防毛刷和纤支镜吸引管间的接触污染,此称为单导管刷。为进一步防止污染,可在单导管之外再加套一导管,则称为双导管刷。为防止远端的污染,可在单导管或双导管之外管的远端装有塞头,其塞头之原料可由明 In the entire lung disease, lung infection is still the most common and common disease, if the cause can be identified, generally can get specific treatment, the prognosis is also the most satisfied. For a long time, in looking for pathogenic bacteria, despite all efforts, but has not been satisfied with the solution to the problem of upper respiratory tract bacteria. In recent years, due to the design of a special brushing device, can successfully through the bronchoscope (hereinafter referred to as bronchoscopy) in the lower respiratory tract to take non-polluting specimens, thus diagnosing pulmonary infectious diseases to create a good way. 【Device and method of operation】 The basic principle of the design of the brushing device is to protect the catheter with Teflon catheter outside the metal wire with nylon brush to prevent the brush and the bronchoscope from attracting the contact between the tubes Pollution, this is called a single catheter brush. To further prevent contamination, you can add a catheter in addition to a single catheter, then known as the double catheter brush. In order to prevent the far-end pollution, the distal end of the single-catheter or double-catheter outer tube can be equipped with a plug whose material of the plug can be replaced by