Anti-drawback medical valve and method
US8002755B2 · kind B2 · utility
5Cited by
178References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2007 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Aug 11, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/248
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical valve has an open mode that permits fluid flow, and a closed mode that prevents fluid flow. The valve has a housing having an inlet and an outlet, and a valving mechanism within the housing to alternatively fluidly connect the inlet and the outlet. The valve is in the open mode when the inlet and outlet fluidly connect. Insertion of a medical implement into the inlet produces a positive fluid displacement at the outlet. In addition, withdrawal of the medical implement as the valve transitions from the open mode to the closed mode produces a substantially neutral fluid displacement at the outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.