Circulatory monitoring system and method
US4444198A · kind A · utility
94Cited by
7References
54Claims
0Family size
Inventor
Key dates
| Filing date | Dec 21, 1981 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Dec 21, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0215
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sterile intra-circulatory monitoring system utilizing an indwelling catheter with fluid under pressure being forced through a fluid line to the catheter. The system includes a normally stagnant pressure chamber to which a transducer is connected. The contents of the chamber are periodically flushed back into the fluid line by utilizing a flush valve and a venturi unit. The venturi unit may be an integral part of the flush valve or separate component. With the present invention a closed loop system is utilized which does not compromise the sterility of the system or the environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.