Proximal catheter assembly having a self-limiting aspiration valve
US7004931B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2002 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | May 9, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0078
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to a proximal catheter assembly configured to facilitate natural or suction-assisted aspiration through a catheter lumen. The proximal catheter assembly comprises a multi-function valve configured to perform functions associated with conventional check valves and relief valves. The valve is configured to regulate the direction of fluid flow, and further configured to regulate the rate of suction-assisted aspiration provided through the lumen of the catheter. When the rate of suction-assisted aspiration exceeds a predetermined threshold, the valve opens to allow fluid to be drawn from tubing coupled to the proximal catheter assembly, thereby mitigating excessively high rates of aspiration imposed upon the patient's vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.