Medicament delivery devices
US9339607B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2010 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Jun 14, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/6027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medicament delivery device (1) comprises a housing (2) for holding a medicament cartridge (9), a piston rod (22, 24) and a drive (11, 20). The medicament cartridge (9) has a medicament outlet and a bung (13) moveable axially along the medicament cartridge for dispensing a medicament, the piston rod has a plunger (24) for moving the bung and a lead member (22) telescopically coupled to the plunger (24) that may be driven by the drive (11, 20) to extend or retract the piston rod (22, 24). Additionally, the device comprises a linkage (40) coupled between the plunger (24) and an anchorage (44) and a drive member (20) telescopically coupled to the lead member (22). The drive (11) is operative to rotate the drive member (20) to telescopically move the lead member relative to the drive member whereby the plunger is moved relative to the lead member by way of the linkage (40).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.