Ratiometric air-in-line detector
US4857050A · kind A · utility
85Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1987 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Sep 23, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/13
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air-in-line detector for use with an IV administration system comprises a light emitter positioned relative to a plurality of light sensors for receiving an IV tube therebetween. A comparator is connected with the light sensors to determine the relative intensity of light respectively incident on each sensor. Means connected with the comparator generates signals in accordance with the relative intensities to indicate whether an IV tube is present and, if so, whether there is fluid or air in the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.