Venting syringe plunger
US7503905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2005 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jun 10, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C17/00593
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A venting syringe plunger assembly for use with a syringe system allows for venting of gas from the syringe system during use. The plunger assembly includes a hollow outer sleeve having an interior surface, and an inner stem having an exterior surface. At least a portion of the inner stem is disposed within the outer sleeve so as to be movable (e.g., slidable) within the outer sleeve. A venting passageway is defined between the interior surface of the outer sleeve and the exterior surface of the inner stem. The plunger assembly also includes means for selectively moving the inner stem within the outer sleeve so as to selectively open and close the venting passageway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.