发明申请
WO2016116613A1 AN INJECTION NEEDLE ASSEMBLY FOR AN INJECTION DEVICE AND AN INJECTION DEVICE COMPRISING SUCH ASSEMBLY
审中-公开
基本信息:
- 专利标题: AN INJECTION NEEDLE ASSEMBLY FOR AN INJECTION DEVICE AND AN INJECTION DEVICE COMPRISING SUCH ASSEMBLY
- 专利标题(中):注射装置的注射针组件和包括这种装配的注射装置
- 申请号:PCT/EP2016/051368 申请日:2016-01-22
- 公开(公告)号:WO2016116613A1 公开(公告)日:2016-07-28
- 发明人: BENITO, Modesto Javier Mora
- 申请人: NOVO NORDISK A/S
- 申请人地址: Novo Allé 2880 Bagsværd DK
- 专利权人: NOVO NORDISK A/S
- 当前专利权人: NOVO NORDISK A/S
- 当前专利权人地址: Novo Allé 2880 Bagsværd DK
- 优先权: EP15152219.0 20150122; EP15203134.0 20151230
- 主分类号: A61M5/20
- IPC分类号: A61M5/20 ; A61M5/32
摘要:
An injection needle assembly (50) for an injection device, comprising: a) a needle cannula (3) attached to a needle hub (4) and defining a pointed tip at a free end (3a, 3b), and b) a needle cover (10, 10a, 10b) forming an axially extending elongated flexible enclosure accommodating the needle cannula (3). The needle cover (10, 10a, 10b) is configured to axially collapse and become penetrated by the needle cannula (3) when a penetration force is applied to the needle cover. The needle cover (10, 10a, 10b) defines a shaft section (11a) and a bulb section (11b). The shaft section (11a) encircles the needle cannula (3) and extends axially from the needle hub (4) to the bulb section (11b). The shaft section (11a) comprises wall areas of minimum wall thickness t 1 whereas the bulb section (11b) comprises wall areas (17a, 17b) having a wall thickness t 2 larger than said minimum wall thickness t 1 . The shaft section (11a) comprises one or more reinforcing ribs (16), each reinforcing rib extending non-parallel to the needle axis so as to at least partly encircle the needle cannula (3), wherein each reinforcing rib (16) divides adjoining annular collapse regions (15) of the shaft section (11a).
摘要(中):
1.一种用于注射装置的注射针组件(50),包括:a)附接到针座(4)并且在自由端(3a,3b)处限定尖端的针管(3),以及b)针 盖(10,10a,10b)形成容纳针插管(3)的轴向延伸的细长柔性外壳。 针盖(10,10a,10b)被构造成当穿刺力施加到针罩时轴向塌缩并被针套(3)穿透。 针盖(10,10a,10b)限定轴部(11a)和灯泡部(11b)。 轴部分(11a)围绕针管(3)并且从针座(4)轴向延伸到灯泡部分(11b)。 轴部(11a)包括最小壁厚t1的壁面积,而灯泡部分(11b)包括具有比所述最小壁厚t1大的壁厚度t2的壁区域(17a,17b)。 轴部分(11a)包括一个或多个加强肋(16),每个加强筋不平行于针轴延伸,以便至少部分地环绕针插管(3),其中每个加强肋(16)将相邻的 轴部(11a)的环形塌陷区域(15)。