发明名称 |
Auto-injector |
摘要 |
The invention relates to an auto-injector (1) for administering a dose of a liquid medicament (M). The auto-injector has an elongate tubular case (12) with a carrier subassembly comprising a tubular carrier (7) slidably arranged inside the case (12). The carrier (7) is adapted to contain a syringe (3) with a hollow injection needle (4), a drive spring (8) and a plunger (9) for forwarding load of the drive spring (8) to a stopper (6) of the syringe (3). The syringe (3) is lockable for joint axial translation with the carrier (7). The drive spring (8) acts between the carrier (7) and the plunger (9). The plunger (9) in an initial state is locked to the carrier (7) by a ramped engagement to the carrier (7) and by being prevented from rotating out of this ramped engagement depending on a relative longitudinal position of the carrier (7) in the case (12). The plunger (9) is arranged to be released for rotating out of the ramped engagement upon the needle (4) reaching at least nearly a predefined injection depth on translation of the carrier (7) in the proximal direction (P) for advancing the needle (4) beyond a proximal end of the auto-injector (1). |
申请公布号 |
NZ614216(A) |
申请公布日期 |
2014.11.28 |
申请号 |
NZ20120614216 |
申请日期 |
2012.02.16 |
申请人 |
SANOFI-AVENTIS DEUTSCHLAND GMBH |
发明人 |
EKMAN MATTHEW;BURNELL ROSIE;BRERETON SIMON FRANCIS;KEMP THOMAS |
分类号 |
A61M5/20;A61M5/315;A61M5/32;A61M5/50 |
主分类号 |
A61M5/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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