发明授权
US08475414B2 Medication delivery device and method for operating a medication delivery device
有权
药物输送装置和用于操作药物输送装置的方法
- 专利标题: Medication delivery device and method for operating a medication delivery device
- 专利标题(中): 药物输送装置和用于操作药物输送装置的方法
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申请号: US12326133申请日: 2008-12-02
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公开(公告)号: US08475414B2公开(公告)日: 2013-07-02
- 发明人: Malcolm Boyd , Robert Veasey , David Plumptre
- 申请人: Malcolm Boyd , Robert Veasey , David Plumptre
- 申请人地址: DE Frankfurt am Main
- 专利权人: Sanofi-Aventis Deutschland GmbH
- 当前专利权人: Sanofi-Aventis Deutschland GmbH
- 当前专利权人地址: DE Frankfurt am Main
- 代理机构: McDonnell Boehnen Hulbert & Berghoff LLP
- 主分类号: A61M5/315
- IPC分类号: A61M5/315
摘要:
A medication delivery device (1) comprises a housing (4) having a proximal end (P) and a distal end (D), a cartridge (3) for holding a medication (M), the cartridge (3) having an outlet (2), a moveable piston (5) being retained within the cartridge (3), a drive member (17) moveable in a proximal direction with respect to the housing (4) for setting a dose of medication (M) to be delivered and in the distal direction with respect to the housing (4) for delivering the dose and a piston rod (10) adapted to drive the piston (5) in a distal direction with respect to the cartridge (3) for delivering the dose. The drive member (17) is releasably coupled to the piston rod (10). The medication delivery device (1) further comprises a resilient member (21) which is arranged to move the drive member (17) in the proximal direction with respect to the housing (4) after dose delivery, thereby reducing pressure of the piston rod (10) on the piston (5).