System for reducing air bubbles in a fluid delivery line
US8361021B2 · kind B2 · utility
53Cited by
83References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2011 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Oct 5, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/365
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and pump that accurately senses air in a fluid delivery line pulses or activates and deactivates the air sensor(s) multiple times during the pumping phase of the fluid delivery cycle and can generate alarms based upon a single indication or a cumulative indication of air in the line. The pump can include multiple air sensors spaced along the delivery line so that the method can use the multiple signals therefrom to distinguish real moving air bubbles from false positives and/or air bubbles adhered to the inner wall of the line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.