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插管困难或胆、胰管严重狭窄时,应用导丝可提高诊断及治疗性ERCP的成功率。各种不同用途及性能的导丝不断出现。本文就各种导丝的特性及其在ERCP中的应用原则简述如下。 1 标准导丝:最常用,有长280、400、480 cm,直径0.018、0.025、0.035、0.038时多种。头部可弯曲,不容易损伤组织。外覆特氟隆膜,有一定硬度和表面摩擦力,有利于引导支架通过狭窄处。缺点:①由于有摩擦力可能使导管更换困难;②导丝头部不可调;③过度用力推拉导丝或抬角器抬举过高时,导丝容易缠结;④电绝缘性不好,电切时要退出导丝。 2 V型标记示踪导丝:直径0.035时,长260和480 cm,有标准型和头部加硬型,后者有利于导丝
Difficult to intubation or gall bladder, pancreatic duct stricture, the application of guide wire can improve the diagnostic success rate of treatment and ERCP. A variety of different uses and performance of the wire appears. This article on the characteristics of various guide wire and its application in the ERCP principles are outlined below. 1 standard guide wire: the most commonly used, with a long 280,400,480 cm, diameter 0.018,0.025,0.035,0.038 when a variety. Head bendable, not easy to damage the tissue. Teflon coated film, a certain degree of hardness and surface friction, is conducive to guide stents through the stenosis. Disadvantages: ① due to the friction may make catheter replacement difficult; ② guide wire head is not adjustable; ③ too hard to push and pull the guide wire or tilt angle lift too high, the guide wire is easy to entangle; ④ electrical insulation is not good, electricity Cut out when the guide wire. 2 V-type tracer guide wire: diameter of 0.035, length 260 and 480 cm, with standard and head plus hard type, which is conducive to the guide wire