The invention relates to a medical indwelling needle, in particular a slot interlaced convex card type retaining needle preventing the naked needle tube from being exposed, including a retention catheter component and a needle tube puncture component. The needle tube puncture component includes a needle tube assembly and a needle tube receiving tube. The needle tube assembly comprises a needle seat and a needle tube, and the needle seat comprises a coaxial distributed inner and outer two ring bodies, two The ring body is connected by a radial stretch of slider, the receiving pipe is worn between the outer ring body and the inner ring body, the receiving pipe is arranged along the axially slot, and the front end of the slot is opened. The slider is absorbed in the slot, and the needle tube is fixed on the solid needle body of the inner ring body. The main point of its composition is that the front section of the slot is set with a pair of elastic convex cards and two The vertices of the convex card exceed the distance between the center faces of the slot and form a stagger to break the slot. The advantages of the invention are as follows: it can effectively restrain the outside of the needle tube to swing out the storage pipe chute.
【技术实现步骤摘要】
槽缝交错凸卡式防止针管裸露的留置针
本专利技术涉及一种医用留置针,特别是一种槽缝交错凸卡式防止针管裸露的留置针。
技术介绍
现有一种防止针管外露的留置针技术如图1和图2所示,其由留置导管组件1和针管穿刺组件2组成。针管穿刺组件由针管组件2.1和针管收纳管2.2组成,针管组件2.1包括针座和针管,针座包括同轴分布的内外两环体,两环体之间通过径向延伸的滑筋固接,收纳管2.2穿套在外环体的内壁上,收纳管沿轴向设置有槽缝,槽缝前端开口,滑筋收纳在此槽缝中,针管固接在内环体的固针体上。当留置针穿刺置管完成后,撤出针管,针座顺着针管收纳管上滑槽2.2.1,滑入收纳管尾端的止动槽内,如图2所示,由于在径向上,针座与收纳管之间具有一定间隙,当朝向收纳管滑槽方向掰动针座,针座轴线会与收纳管轴线形成一定夹角,而固接于针座上针管就会随着针座一起摆动,结果已使用过的针管针尖会摆出收纳管的滑槽,而极易刺伤人。这是现有技术中的其一不足之处。另一不足之处在于:留置针在使用前,收纳管插接于针座上环形腔内,与针座之间是靠阻尼连接,使用过程中要是不小心,很容易将收纳管拔离针座,而导致需将收纳管插回针座内,才能用于后续收纳针管。
技术实现思路
本专利技术的目的在于克服现有技术中的不足之处,而提供一种能约束针管外摆出收纳管滑槽的槽缝交错凸卡式防止针管裸露的留置针。本专利技术的目的是通过以下途径来实现的。槽缝交错凸卡式防止针管裸露的留置针,其包括留置导管组件和针管穿刺组件,针管穿刺组件包括针管组件和针管收纳管,针管组件包括针座和针管,针座包括同轴分布的内外两环体,两环体之间通过径向延伸的滑筋固接,收纳 ...
【技术保护点】
1.槽缝交错凸卡式防止针管裸露的留置针,其包括留置导管组件和针管穿刺组件,针管穿刺组件包括针管组件和针管收纳管,针管组件包括针座和针管,针座包括同轴分布的内外两环体,两环体之间通过径向延伸的滑筋固接,收纳管穿套在外环体与内环体之间,收纳管沿轴向设置有槽缝,槽缝前端开口,滑筋收纳在此槽缝中,针管固接在内环体的固针体上,其特征在于,槽缝前段设置有一对弹性凸卡,两个凸卡顶点分别超过槽缝中心面一定距离,形成交错,遮断此位置槽缝。
【技术特征摘要】
1.槽缝交错凸卡式防止针管裸露的留置针,其包括留置导管组件和针管穿刺组件,针管穿刺组件包括针管组件和针管收纳管,针管组件包括针座和针管,针座包括同轴分布的内外两环体,两环体之间通过径向延伸的滑筋固接,收纳管穿套在外环体与内环体之间,收纳管沿轴向设置有槽缝,槽缝前端开口,滑筋收纳在此槽缝中,针管固接在内环体的固针体上,其特征...
【专利技术属性】
技术研发人员:陈永曦,
申请(专利权)人:福建省百仕韦医用高分子股份有限公司,
类型:发明
国别省市:福建,35
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