Automatic injection device with pneumatic damping
US9119920B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2012 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Jan 26, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3142
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An injection device for use with a syringe having a syringe body, a needle coupled thereto, and a plunger moveable through the body to eject medication from the syringe through the needle, includes a housing defining an inner space for holding a syringe and facilitating movement thereof from a first position in which the needle is contained fully within the housing and a second position in which the needle projects from the housing, and a drive member located within the inner space so that in use the drive member can engage the plunger of a syringe held within the housing. The device further includes a force applicator located within the inner space for providing a force to the drive member so as to move the syringe from the first to the second position and thereafter to move the plunger through the syringe body, a trigger mechanism, and a damper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.