Autoinjector with audible indication of completed delivery
US9072837B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Jul 7, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/581
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a device for automatic injection of a product into an injection site, the device comprising: a container having a displaceable piston; a tubular housing having at least a flexible part which, in a rest state, defines a first opening; a piston rod; and, an intermediate part fixed to the piston rod which defines a diameter larger than the first opening. With sufficient distal displacement of the piston rod, the intermediate part causes the at least a flexible part to deflect outwardly with further distal displacement of the piston rod causing the intermediate part to wholly pass through the first opening with the at least a flexible part returning towards the at rest state, engagement of the at least a flexible part with a surrounding element under force of movement towards the at rest state generating a sound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.