Injection device
US8267899B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Nov 29, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/581
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medication dispensing device with a housing and a member wherein the member is moveable in a distal direction is useful in delivering medication to a patient. A fluid container can be used with the device and often has a moveable piston at one end and an outlet at the other. The member receives a force from a user and drives the piston in the distal direction to expel medication. A intermediate system is disposed between the member and the piston including a gear set that has a pinion in meshed engagement with a rack. The system allows the member to move a greater distance than the piston moves thereby increasing the force on the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.