Injection device
US9662457B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2012 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Jul 2, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3289
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An injection device which includes a housing (12), a needle hub (38) slidable within the housing (12), a needle (40) having a distal end piercing tip (42) and a proximal end piercing tip (44), the needle hub (40) being moveable from a first position wherein the distal piercing tip (42) is within the housing to a second position wherein the distal end piercing tip (42) extends outwardly of housing (12), a first spring (23) biasing the needle hub (38) towards the first position, and a cartridge receiving member (48) mounted within the housing, and a plunger rod assembly (166), the plunger rod assembly (166) having a distal interior chamber (102) and a proximal interior chamber (103), the distal interior chamber (102) being designed to receive a cartridge (85) containing a liquid (89), the cartridge having a septum (87) and a plunger (88) to prevent exit of the liquid, and a second needle hub (91) located in the proximal chamber, a second hollow needle (92) mounted in the second needle hub, the second hollow needle having a distal piercing tip (94) and a proximal piercing tip (93), the second hollow needle being moveable from a first non piercing position to a second position whereby …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.