Air-in-line detector
US4658244A · kind A · utility
75Cited by
20References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Mar 28, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A detector for automatically determining the presence of air in a fluid line comprises a plurality of ON-OFF optical sensors selectively disposed in series along the axis of a portion of an I.V. tube according to their relative light sensitivity and according to their dependence upon direct or refracted light for activation. An alarm condition indicates air-in-line when predetermined individual sensors change their ON or OFF condition in accordance with a microprocessor programmed logic sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.