Device, system and method for dispensing a fixed dose of fluid
US8640921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2011 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Dec 2, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/204
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a device for dispensing a fixed dose of fluid, the device comprising at least one barrel; at least one plunger at least partially enclosed within the barrel; a motion conversion mechanism for transferring actuated pressure force applied outside the barrel into movement of the at least one plunger in a dispensing direction, wherein the motion conversion mechanism comprises at least one rotating gear; and a releasing mechanism for disconnecting the plunger from the motion conversion mechanism, wherein at a released position the at least one plunger can move in a direction opposite to the dispensing direction, independent of a rotational movement of the at least one gear, and wherein the movement of the plunger in the opposite direction to the dispensing enables loading the fluid into the barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.