The utility model discloses a pre filled rotating stud syringe, which comprises a connecting section of an injection cylinder connected with an injection cylinder, and the connecting section of the injection cylinder has a cylindrical through hole structure, and the bottom end of the inner wall of the injection cylinder connection section is parallel to a number of ring protrusions, and the connecting section of the needle seat is a circular column type through hole structure and the connecting section of the needle seat. The inner wall of the inner wall is threaded, and the thread of the inner wall of the connecting section of the needle seat is used to screw the needle seat. The inner diameter of the connecting section of the injection cylinder is less than the inner diameter of the connecting section of the needle seat, and the connection section of the injection cylinder is connected with the connecting section of the needle seat through a transition section showing a circular inclined plane. The utility model provides a beneficial effect for a pre filled rotary screw syringe: the screw opening device is easily removed from the top of the syringe, and the nurse will not have a safety accident, such as a needle tie injury, and so on, when the nurse changes the needle.
【技术实现步骤摘要】
一种预充式旋转螺口注射器
本技术属于医疗器械
,涉及一种注射器,特别涉及一种预充式旋转螺口注射器。
技术介绍
剂量自毁式注射器(如0.5mL或1mL)由于配件精度要求高,难以大量生产。小剂量注射器注射筒管径小,而针座管径大,故往往需外配螺口装置。小剂量注射器中,螺口装置主要用于固定针座,除此,为满足护士注射时更换针座的需要,螺口装置还应具备可拆卸性。现有的螺口装置通常采用单向卡合的方式与注射筒连接,这种连接方式不利于护士更换针座,对注射器使用造成不便,甚至浪费。基于以上所述,一种预充式旋转螺口注射器的开发很有必要性。
技术实现思路
针对上述技术中存在的不足之处,本技术提供一种预充式旋转螺口注射器,所述螺口装置通过过盈配合的方式与针座形成紧密配合,通过内壁设U型凹槽使针座不易旋转;采用底端内壁设凸起,通过所述凸起与注射筒外壁的凹槽卡合实现螺口装置与注射筒的连接;通过所述凸起与注射筒外壁凹槽的脱离实现螺口装置与注射筒的脱开,操作简单方便。所述的预充式旋转螺口注射器,包括,注射筒连接段,与注射筒相连,所述注射筒连接段呈圆柱型通孔结构,所述注射筒连接段内壁底端平行设若干环形 ...
【技术保护点】
一种预充式旋转螺口注射器,其特征在于,包括,注射筒连接段,其与注射筒相连,所述注射筒连接段呈圆柱型中空结构,所述注射筒连接段内壁底端平行设若干环形凸起;针座连接段,呈圆柱型通孔结构,所述针座连接段内壁设螺纹,所述针座连接段内壁螺纹用于针座的旋入;其中,注射筒连接段内径小于所述针座连接段内径,所述注射筒连接段与所述针座连接段通过呈环形斜面的过渡段连接。
【技术特征摘要】
1.一种预充式旋转螺口注射器,其特征在于,包括,注射筒连接段,其与注射筒相连,所述注射筒连接段呈圆柱型中空结构,所述注射筒连接段内壁底端平行设若干环形凸起;针座连接段,呈圆柱型通孔结构,所述针座连接段内壁设螺纹,所述针座连接段内壁螺纹用于针座的旋入;其中,注射筒连接段内径小于所述针座连接段内径,所述注射筒连接段与所述针座连接段通过呈环形斜面的过渡段连接。2.根据权利要求1所述的预充式旋转螺口注射器,其特征在于,所述注射筒外壁设有与所述环形凸起相匹配的环形凹槽,所述环形凸起一一对应地嵌...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。