Medical pressure multiplexing system
US4949723A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1987 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Oct 15, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/021
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for muliplexing two lumens of a catheter to a single pressure transducer and monitor setup such that the pressure found in either of the two lumens may be alternately monitored. Included in the present invention is a pressure mulitplexing valve provided with a four-port body and a rotor which may be selectively rotated to either of two monitoring positions. The rotor is privided with passageways that interconnect the ports. In one embodiment both catheter lumens are always connected to a medical infusion device regardless of which lumen is connected to the transducer. In another embodiment, one lumen is shut off when not connected to the transducer. The present invention provides a compact system removably mounted on a single carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.