The utility model discloses an integral positive pressure safety indwelling needle, in which the body of the indwelling needle is an inner chamber, and a transfusion connection head connected with the front end of the inner chamber is arranged on the body of the indwelling needle. The front end of the indwelling needle body is a indwelling needle tube assembly connected with the inner chamber, and an elastomer is arranged in the inner chamber and the transfusion connection head; the end of the inner chamber is provided with a safety sleeve, and a movable holding is arranged behind the safety sleeve. The needle holding assembly comprises a needle holding handle and a puncture needle connected with the needle holding handle; a puncture needle passes through a safety sleeve, an inner chamber and a retaining needle tube; a small hole through which the puncture needle passes is arranged at the back end of the safety sleeve; a convex ring matching the small hole is arranged at the front of the puncture needle, and the diameter of the convex ring is larger than the diameter of the small hole. When the puncture needle is withdrawn, the small hole blocks the convex ring. The utility model has the advantages of simple structure and compact shape, adopts an integral elastomer with automatic positive pressure, good positive pressure effect and sealing performance after needle withdrawal, solves the problems of pipe plugging, fluid leakage and needle injury prevention, and has good bacteriostasis function.
【技术实现步骤摘要】
一体式正压安全留置针
本技术涉及一种留置针。
技术介绍
临床上使用的留置针由于结构等原因,易产生堵管、漏液问题,且有二次污染的可能,需要进一步加以改进。
技术实现思路
本技术的目的在于提供一种解决困扰临床的堵管、漏液问题及防针刺伤的一体式正压安全留置针。本技术的技术解决方案是:一种一体式正压安全留置针,其特征是:包括留置针本体,留置针本体内为内腔,留置针本体上设置与内腔前端相通的输液连接头,留置针本体前端为与内腔相通的留置针针管组件,在内腔和输液连接头内设置弹性体;所述弹性体有与内腔内壁贴合的弹性体及输液连接头中的弹性体,内腔末端设置安全套管,安全套管后设置可前后移动的持针组件;所述持针组件包括持针柄及与持针柄连接的穿刺针;穿刺针穿过安全套管、内腔、留置针针管;安全套管的后端设置穿刺针穿过的小孔,穿刺针前部设置与所述小孔配合的凸环,凸环直径大于小孔直径,当穿刺针后撤时,所述所述小孔将所述凸环阻挡。安全套管中设置阻止穿刺针后撤后再向前的弹簧片。本技术结构简单、外形小巧,零部件不到传统正压安全留的一半,生产工艺简单成本大幅度降低;采用弹性体自动正压,正压效果及撤针后密封性能好,解决了困扰临床的堵管、漏液问题,且有很好的阻菌功能;安全套管在撤针后封闭在一个相对密闭的空间内,防止二次污染及防针刺伤,且可耐高压。附图说明下面结合附图和实施例对本技术作进一步说明。图1是本技术一个实施例的结构示意图。图2是图1的A-A视图。图3是一体式弹性体的结构示意图。图4是弹簧片的结构示意图。具体实施方式一种一体式正压安全留置针,包括留置针本体1,留置针本体内为内腔2,留置针本体上设置 ...
【技术保护点】
1.一种一体式正压安全留置针,其特征是:包括留置针本体,留置针本体内为内腔,留置针本体上设置与内腔前端相通的输液连接头,留置针本体前端为与内腔相通的留置针针管组件,在内腔和输液连接头内设置弹性体;所述弹性体有与内腔内壁贴合的弹性体及输液连接头中的弹性体,内腔末端设置安全套管,安全套管后设置可前后移动的持针组件;所述持针组件包括持针柄及与持针柄连接的穿刺针;穿刺针穿过安全套管、内腔、留置针针管;安全套管的后端设置穿刺针穿过的小孔,穿刺针前部设置与所述小孔配合的凸环,凸环直径大于小孔直径,当穿刺针后撤时,所述小孔将所述凸环阻挡。
【技术特征摘要】
1.一种一体式正压安全留置针,其特征是:包括留置针本体,留置针本体内为内腔,留置针本体上设置与内腔前端相通的输液连接头,留置针本体前端为与内腔相通的留置针针管组件,在内腔和输液连接头内设置弹性体;所述弹性体有与内腔内壁贴合的弹性体及输液连接头中的弹性体,内腔末端设置安全套管,安全套管后设置可前后移动的持针组件;所述...
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