发明名称 |
Drug delivery device |
摘要 |
The present invention is generally directed to a drug delivery device for selecting and dispensing a number of user variable doses of a medicament. The device comprises a housing (10), a dose selector (80) operable to set a dose by rotation relative to the housing (10), a number sleeve (60) arranged within the housing (10) such that at least a portion of the number sleeve (60) is visible through a first aperture (11b)in the housing (10), a piston rod (30) coupled to the housing (10) and to a drive sleeve (40) such that rotation of the drive sleeve (40) relative to the housing (10) causes the piston rod (30) to translate relative to the housing (10) and a clutch mechanism arranged between the number sleeve (60) and the drive sleeve (40). The clutch mechanism comprises a first interface (42, 62) for rotationally constraining the drive sleeve (40) and the number sleeve (60) depending on the axial position of the drive sleeve (40) and a second interface (43, 121) for rotationally constraining the drive sleeve (40) and the number sleeve (60) via a clutch element (120) depending on the axial position of the drive sleeve (40) and/or the bias of a clutch spring (130). |
申请公布号 |
AU2015282988(A1) |
申请公布日期 |
2017.02.02 |
申请号 |
AU20150282988 |
申请日期 |
2015.07.01 |
申请人 |
Sanofi |
发明人 |
Marsh, William;Morris, Anthony Paul;Butler, Joseph;Jones, Matthew;Steel, Samuel;Avery, Richard James Vincent |
分类号 |
A61M5/20;A61M5/31;A61M5/315 |
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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