Auto-injector
US11052199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2016 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Jun 6, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/583
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An autoinjector having a body (1) receiving a reservoir (S), the reservoir containing fluid and including a piston (P); a piston rod (5) adapted to co-operate with the piston (P) of the reservoir (S), the piston rod (5) movable by an injection spring (8) between a primed position and an injection position in which the piston rod (5) has moved the piston (P) of the reservoir (S); and an indicator device for indicating that the autoinjector may be removed from the injection site. The autoinjector includes a retarding system for delaying actuation of the indicator device relative to the end of injection, the retarding system including a dashpot (16) containing a fluid and a piston (19) arranged in the dashpot (16). The retarding system has the dashpot (16), the piston (19), a retarding spring (18), a locking key (20), and the piston rod (5), and the piston rod (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.