Auto-injector with a delay device comprising an epicyclic gear train
US10653838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2016 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Jul 12, 2036 |
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), such as a pre-filled syringe, and stationary in said body (1); a piston rod (5) that co-operates with the piston (P), the piston rod (5) movable between a primed position and an injection position in which the piston rod has moved the piston so as to inject the fluid into an injection site; and a visual, audible, and/or tactile indicator device for indicating to the user that the autoinjector may be removed from the injection site, the indicator device arranged at the rear end of the body (1), remote from the injection site. The autoinjector includes a retarding device to delay actuating the indicator device relative to the end of injection, the retarding device having an epicyclic gear train having at least one stage, and advantageously two stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.