Closed blood sampling system with isolated pressure monitoring
US7744573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2006 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jul 1, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/150244
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A closed blood sampling system within a pressure monitoring line having a control valve that enables a clearance reservoir to be isolated from the pressure column when no samples are being taken. The valve is a stopcock-like device that includes a rotating valve member and attached control handle with clear visible and tactile indicators for the mode of operation. The rotating valve member has a number of internal and circumferential channels for connecting or disconnecting select ports in the core of the valve. By isolating the clearance reservoir, the quality of the pressure signal is improved such that the sampling line can be lengthened for greater convenience in the intensive care or operating room. The valve may also incorporate a blunt cannula sampling site therewithin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.