Passive venous air purging chamber with vent/sucker blood handling capabilities
US7591812B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 24, 2006 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jun 12, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/3667
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention is a closed complaint venous reservoir with at least one pliable wall having at least three innovative features: 1) the venous reservoir incorporates means that purge gas bubbles entering the venous reservoir without the user intervention, 2) the venous reservoir incorporates a cardiotomy reservoir, and 3) the pliable wall of the venous reservoir is sealed within a rigid housing allowing control of its “atmospheric” pressure, and therefore the pressure at which that wall collapses. The combination of the three innovative features provides a collapsible compliant reservoir unitized with cardiotomy reservoir having air removal features and enabling vacuum augmented venous drainage (VAVD) that match that of the open hardshell venous-cardiotomy reservoir unit, while retaining the advantages of the closed soft shell venous reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.