Intravenous fluid delivery system with air elimination
US5211201A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Nov 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/304
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An air elimination system is provided for an intravenous fluid delivery system for intravenous injection of fluid into a patient. An air-detection apparatus (5) is disposed in an intravenous fluid line (3). A return line (8) is attached to a point in the line (3) below the air-detection apparatus (5). The other end of the return line (8) is attached to a chamber (1, 2, 12) where air may be separated from the fluid. The separation chamber may be a drip chamber (12), a metering chamber (2) or the intravenous supply (1). When air is detected, a valve (11) or valves (7, 9) are switched, so that the intravenous fluid is prevented from flowing to the patient, and so that, when a pump (4) is turned on, the fluid is pumped through the return line (8) to the separation chamber (1, 2, 12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.