The invention provides a narrow dilatation catheter, including a catheter, which is movable with a narrow dilatation guide in the urinary passage of the catheter, a narrow dilatation guide includes a tubular dilatation guide body, a guide part is arranged at the front end of the narrow dilatation guide body, a balloon is arranged at the back end of the guide part, and a through hole is arranged on the side wall of the narrow dilatation guide in the balloon, and a narrow dilatation guide body. The back end of the guide body is provided with an elastic sac, which forms a sealed space filled with gas or liquid inside the narrow expansion guide body. The front end of the urine passage is provided with an opening. The guide part and the balloon pass through the opening of the front end of the catheter and are located outside the front end of the catheter. The elastic sac body is located outside the urinary cavity. When urethral stricture occurs, the urethral stricture dilatation guide is moved forward, then the elastic sac is extruded, the balloon is propped up, the urethral side wall is propped up, the urethral catheter continues to move forward, the elastic sac is loosened, the catheter is placed easily by repeated operation.
【技术实现步骤摘要】
狭窄扩张导尿管
本专利技术属于医疗器械领域,尤其是涉及一种放置无痛苦的狭窄扩张导尿管。
技术介绍
作为临床常见的医疗器械,导尿管经由尿道置入人体后将尿液从膀胱引流至体外,主要作用是准确记录尿量,便于引流及冲洗等,在临床发挥重要作用。导尿管材质主要有硅胶、橡胶、EVA、PVC等,头端及管体偏软。但是部分病人因为尿道狭窄、前列腺增生、癌变、膀胱颈硬化等情况致使尿道内阻力偏大,大大增加置管难度。现有临床导尿通常在消毒尿道外口及周围组织后用一手将尿道外口固定,另一只手直接或用镊子等把持导尿管,从尿道口插入,面对阻力弯曲及狭窄情况时,则需要更用力置入,给患者带来巨大的痛苦,造成尿道粘膜的损伤,造成尿路结构的破坏,增加尿道感染的风险。现有临床的导尿管置入过程中存在以下问题:当导管头部顶端行进至尿道狭窄处时需要加大外力推进,头部顶端与狭窄处尿道会发生剪切作用,即便通过狭窄尿道,尿道内膜也遭受严重挫伤且为微生物感染创造条件,导尿管外表面涂抹润滑油等,在应对尿道狭窄时收效甚微。临床上置入导尿管及更换尿管有时非常困难,并且容易引起暴力插入尿管时所带来的二次尿道损伤,如假道、出血、穿孔 ...
【技术保护点】
1.狭窄扩张导尿管,包括导尿管,导尿管内设有尿液通道,尿液通道的前端侧壁上设有尿液入口,导尿管的后端设有尿液腔,其特征在于:尿液通道内可移动的设有狭窄扩张引导器,狭窄扩张引导器包括管状的狭窄扩张引导器本体,狭窄扩张引导器本体前端设有引导部,引导部后端设有气囊,气囊内部的狭窄扩张引导器本体侧壁上设有通孔,狭窄扩张引导器本体的后端设有弹性囊体,弹性囊体与狭窄扩张引导器本体形成一个内部充满气体或液体的密封空间,尿液通道的前端设有开口,引导部和气囊穿过导尿管尿液通道前端开口位于导尿管前端外部,弹性囊体位于尿液腔外部。
【技术特征摘要】
1.狭窄扩张导尿管,包括导尿管,导尿管内设有尿液通道,尿液通道的前端侧壁上设有尿液入口,导尿管的后端设有尿液腔,其特征在于:尿液通道内可移动的设有狭窄扩张引导器,狭窄扩张引导器包括管状的狭窄扩张引导器本体,狭窄扩张引导器本体前端设有引导部,引导部后端设有气囊,气囊内部的狭窄扩张引导器本体侧壁上设有通孔,狭窄扩张引导器本体的后端设有弹性囊体,弹性囊体与狭窄扩张引导器本体形成一个内部充满气体或液体的密封空间,尿液通道的前端设有开口,引导部和气囊穿过导尿管尿液通道前端开口位于导尿管前端外部,弹性囊体位于尿液腔外部。2.根据权利要求1所述的狭窄扩张导尿管,其特征在于:尿液腔与弹性囊体之间还设有弹性波纹管,弹性波纹管的后端与弹性囊体相接触,弹性波纹管的前端与尿液腔后端相接触,狭窄扩张引导器本体后端穿过弹性波纹管与弹性囊体相连接。3.根据权利要求1所述的...
【专利技术属性】
技术研发人员:马浴东,李刚,曲言军,马才,李文婷,
申请(专利权)人:山东威高集团医用高分子制品股份有限公司,
类型:发明
国别省市:山东,37
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