| 发明名称 |
Drive Mechanism for a Drug Delivery Device |
| 摘要 |
The present invention relates to a drive mechanism for a drug delivery device and to a respective drug delivery device, wherein the drive mechanism comprises: —an elongated housing (20) extending in an axial direction (1, 2), a piston rod (70) to operably engage with a piston (16) of a cartridge (14) to displace the piston (16) in an axial distal direction (1), —a drive sleeve (50) rotatably supported in the housing (20) and being operably releasable from the piston rod (70) for setting of a dose and being operably engageable with the piston rod (70) for dispensing of the dose, —a dose limiting member (60) engaged with the drive sleeve (50) and engaged with the piston rod (70) in such a way, that it is displaced in axial direction (1, 2) relative to the drive sleeve (50) when the drive sleeve (50) rotates relative to the piston rod (70) during a dose setting procedure, and at least one stop (42, 56; 78) to engage with the dose limiting member (60) for limiting the axial displacement of the dose limiting member (60) during the dose setting procedure and to impede further displacement of the drive sleeve (50) relative to the piston rod (70). |
| 申请公布号 |
US2016067414(A1) |
申请公布日期 |
2016.03.10 |
| 申请号 |
US201414782655 |
申请日期 |
2014.04.08 |
| 申请人 |
SANOFI |
发明人 |
Bayer Stefan;Berning Daniel;Blank Philippe;Pelzer Wolfgang;Pfoser Michael;Wilden Björn |
| 分类号 |
A61M5/315;A61M5/20 |
主分类号 |
A61M5/315 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A drive mechanism of a drug delivery device for dispensing of a dose of a medicament, the mechanism comprising:
an elongated housing (20) extending in an axial direction (1, 2), a piston rod (70) to operably engage with a piston (16) of a cartridge (14) to displace the piston (16) in an axial distal direction (1), a drive sleeve (50) rotatably supported in the housing (20) and being operably releasable from the piston rod (70) for setting of a dose and being operably engageable with the piston rod (70) for dispensing of the dose, a dose limiting member (60) engaged with the drive sleeve (50) and engaged with the piston rod (70) in such a way, that it is displaced in axial direction (1, 2) relative to the drive sleeve (50) when the drive sleeve (50) rotates relative to the piston rod (70) during a dose setting procedure, and at least one stop (42, 56; 78) to engage with the dose limiting member (60) for limiting the axial displacement of the dose limiting member (60) during the dose setting procedure and to impede further displacement of the drive sleeve (50) relative to the piston rod (70). |
| 地址 |
Paris FR |
