The utility model discloses an adjustable channel sheath for a flexible ureteroscope, which comprises an outer sheath and an inner core inserted into the outer sheath. A central channel for placing a flexible ureteroscope is arranged in the middle of the inner sheath, and the inner core has a transparent head convenient for collecting images of the flexible ureteroscope. In order to facilitate the acquisition of images by the flexible ureteroscope, the application also sets the head of the inner core corresponding to the position of the tip of the flexible ureteroscope to be transparent, so that the flexible ureteroscope can observe the situation of the ureter completely through the head of the inner core. When special circumstances arise during the operation, the flexible ureteroscope can observe the situation of the ureter completely through the head of the inner core. It can adjust the length of the inner core so that the operator can place the channel sheath in the best position under the direct vision of the flexible ureteroscope. The inner core of the utility model has simple structure, the inner diameter of the central passage is increased compared with the existing technology, and is convenient for processing and manufacturing.
【技术实现步骤摘要】
可调节可视输尿管软镜通道鞘
本技术属于医疗器械领域,具体涉及一种可调节可视输尿管软镜通道鞘。
技术介绍
目前,输尿管软镜技术已成为处理上尿路结石的重要手段之一,在经尿道输尿管软镜手术时,一般需放置输尿管通道鞘,其作用为:1,由于输尿管通道鞘挺直且各部位直径相同,便于输尿管软镜沿着通道鞘顺利进入肾内;2.可让进入肾脏集合系统内的灌注液经通道鞘及时排出体外,从而降低肾盂压力;3.可增加约35%的液体灌注,使手术视野更清晰;4.有利于碎石的排出;5.可隔离软镜和输尿管壁,减少软镜镜体活动和其它操作对输尿管壁的损伤;6.延长输尿管软镜的使用寿命。输尿管通道鞘包括单腔和双腔两种,通道鞘通常由外鞘和长锥形内芯构成。常规使用方法为先用输尿管硬镜于患侧输尿管内放置好斑马导丝,术者在斑马导丝引导下将输尿管通道鞘凭手感和经验盲推至输尿管肾盂连接部,或在C形臂X线监视下进行。在此过程中,输尿管通道鞘有膀胱输尿管穿孔、输尿管裂伤、肾盂肾盏损伤出血等并发症,其次通道鞘放置不到位可引起术中肾盂压力过高,增加出血及感染的风险,其原因主要为目前所用输尿管通道鞘无法在直视下操作,安全性有待提高;而 ...
【技术保护点】
1.一种可调节可视输尿管软镜通道鞘,包括外鞘和插入外鞘内的内芯,其特征在于,所述的内芯中间开设有用于放置输尿管软镜的中央通道,所述的内芯具有便于所述的输尿管软镜采集图像的透明头部。
【技术特征摘要】
1.一种可调节可视输尿管软镜通道鞘,包括外鞘和插入外鞘内的内芯,其特征在于,所述的内芯中间开设有用于放置输尿管软镜的中央通道,所述的内芯具有便于所述的输尿管软镜采集图像的透明头部。2.如权利要求1所述的可调节可视输尿管软镜通道鞘,其特征在于,所述的内芯包括插入外鞘内的内芯本体、穿过外鞘的透明头部以及裸露在外鞘尾端外侧的内芯尾部,内芯尾部与外鞘尾端之间设有用于将内芯装配至外鞘上的固定连接件。3.如权利要求2所述的可调节可视输尿管软镜通道鞘,其特征在于,所述的固定连接件包括固定在所述的内芯尾部上的锁扣,所述的锁扣与外鞘尾端之间相互卡接固定。4.如权利要求3所述的可调节可视输尿管软镜通道鞘,其特征在于,在锁扣朝向外鞘尾端的一侧,所述的锁扣上设有卡柱,所述的外鞘尾端设有供卡柱穿过的通孔,所述的卡柱穿过通孔的一端带有限位件。5.如权利要求4所述的可调节可视输尿管软镜通道鞘,其特征在于,所述的外鞘尾端呈喇叭口状,外鞘尾端内设用于容纳所述限位件且与所述通孔相连通的...
【专利技术属性】
技术研发人员:阮磊,
申请(专利权)人:杭州市余杭区第二人民医院,
类型:新型
国别省市:浙江,33
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