The utility model discloses a composite needle tube, composed of needle seat and the needle, the needle by needle, needle needle outer and inner wall cavity structure, the cavity is arranged between the inner needle needle and needle wall. The needle is arranged on the outer wall of the outer wall of the through hole, the through hole and the outer wall of the needle seat and the needle tube is communicated with the cavity body; the inner tube and the outer tube, the fixed end of the inner tube wall is fixedly connected with the needle seat, the fixed end of outer tube wall is fixedly connected with the needle seat. The outer pipe and the inner pipe is communicated with the cavity and the cavity formed between the needle. Compared with ordinary needle, the utility model has the advantages that: the composite pipe needle by needle the side wall of the through hole is formed outside the chamber outlet has the advantages of simple structure, easy molding, low cost, can automatically adjust the pressure in the vial in liquid liquid extraction, liquid medicine for import. The utility model effectively solves the problem that the prior art directly divides the needle head into two cavities and is difficult to be manufactured in industry, which is convenient for manufacturers to popularize rapidly, and can also reduce production cost.
【技术实现步骤摘要】
一种复合管针头
:本技术属于医疗器械领域,涉及一种临床上注射药物以及溶药、加药的专用针头,尤其是一种复合管针头。
技术介绍
:申请号为CN02255408.4的专利提供了一种医用复合管通气孔针头,它由针头座与针头体固定连接构成,针头体由液腔和气腔组成,液腔后端与针头座内孔相通,前端为进出液孔。气腔后端位于针头座一侧,为通气孔,前端为进出气孔。然而,目前临床上溶药、加药所用针头多为各医疗器械厂家生产的12号单孔针头,直径仅有1.2mm,上述专利的技术方案是直接把针头从中间分隔成液腔和气腔,这种技术方案虽然可行,但不利于工业上的生产制造,并且该专利通气孔为开放式结构,无法更好的改变压强。
技术实现思路
:本技术的目的在于克服上述现有技术的缺点,提供一种复合管针头,该复合管针头利用针座侧壁通孔形成外腔体出口,结构简单,容易成型,成本低,能够在加液抽液的过程中自动调整药瓶中的气压,便于液体进出药瓶。本技术的目的是通过以下技术方案来实现的:一种复合管针头,由针座和针管构成,所述针座由针座内壁、针座外壁及针座腔体构成,针座腔体设置在针座内壁和针座外壁之间,针座外壁上设置有外壁通孔,外壁通孔与针座腔体连通;所述针管由内管和外管构成,内管的固定端与针座内壁固定连接,外管的固定端与针座外壁固定连接。所述外管和内管之间形成的空腔与针座腔体连通。所述针管由内管和外管构成,内管的固定端与针座内壁固定连接,外管的固定端同时与针座外壁和针座内壁固定连接。所述内管与针座连通,外管与针座腔体连通。所述外管和内管的自由端平齐。所述内管和外管平行。所述外壁通孔设置有与注射器乳头匹配的接口。所述外壁通 ...
【技术保护点】
一种复合管针头,由针座和针管构成,其特征在于:所述针座由针座内壁、针座外壁及针座腔体构成,针座腔体设置在针座内壁和针座外壁之间,针座外壁上设置有外壁通孔,外壁通孔与针座腔体连通;所述针管由内管和外管构成,内管的固定端与针座内壁固定连接,外管的固定端与针座外壁固定连接。
【技术特征摘要】
1.一种复合管针头,由针座和针管构成,其特征在于:所述针座由针座内壁、针座外壁及针座腔体构成,针座腔体设置在针座内壁和针座外壁之间,针座外壁上设置有外壁通孔,外壁通孔与针座腔体连通;所述针管由内管和外管构成,内管的固定端与针座内壁固定连接,外管的固定端与针座外壁固定连接。2.如权利要求1所述的复合管针头,其特征在于:所述外管和内管之间形成的空腔与针座腔体连通。3.如权利要求1所述的复合管针头,其特征在于:所述针管由内管和外管构成,内管的固定端与针座内壁固定连接,外管的固定端同时与针座外壁和针座内壁固定连接。4.如权利要求1或3所述的复合管针头,其特征在于:所述内管与针座连通,外管...
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