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发明公开
CN104010679A 无瘀伤插管 失效 - 权利终止

无瘀伤插管
摘要：
一种针头装置(6)，其包括可安装至注射装置(1)的壳体。壳体包括朝向所述针头装置(6)的近端设置的第一壳体元件(13)和朝向所述针头装置(6)的远端设置的第二壳体元件(15)。具有尖锐的近端的切割元件(14)布置在所述第一壳体元件(13)的近端处。具有钝的近端的插管(11)被装配至第二壳体元件(15)，并且用于插管(11)的开口设置在第一壳体元件(13)的近端处。第一壳体元件(13)和第二壳体元件(15)在延伸位置和压缩位置之间相对于彼此是可移动的，在延伸位置，插管(11)的近端不延伸超过切割元件(14)的近端，在压缩位置，插管(11)延伸穿过第一壳体元件(13)的开口并经过切割元件(14)的近端。该结构很大程度上减小了治疗后瘀伤和组织损伤的风险。
摘要（英）：

A needle device (6) comprising a housing which can be mounted to an injection device (1). The housing comprises a first housing element (13) provided towards a proximal end of said needle device (6) and a second housing element (15) provided towards a distal end of said needle device (6). A cutting element (14) having a sharp proximal end is arranged at a proximal end of said first housing element (13). A cannula having a blunt proximal end (11) is fitted to the second housing element (15) and an opening for the cannula (11) is provided at the proximal end of the first housing element (13). The first housing element (13) and the second housing (15) element are moveable relative to each other between an extended position where the proximal end of the cannula (11) does not extend beyond the proximal end of the cutting element (14) and a compressed position where the cannula (11) extends through the opening of the first housing element (13) and past the proximal end of the cutting element (14). This construction greatly reduces the risk of post-treatment bruising and tissue trauma.

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