Auto-injector with a delay system
US10780230B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2016 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Sep 13, 2037 |
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) containing fluid and a piston (P); a piston rod (5) movable by an injection spring (8) between a primed position and an injection position; and a visual, audible, and/or tactile indicator for indicating the autoinjector may be removed from the injection site. The autoinjector including a retarding system for delaying actuation of the indicator relative to the end of injection, and including a dashpot (16) containing a fluid, a piston (19) in the dashpot, the dashpot or the piston movable in the body during actuation of the retarding system with the other stationary relative to the body, resulting in the fluid moving out from the dashpot through a flow passage (161; 195) to brake movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.