Infusion monitoring apparatus
US4496346A · kind A · utility
62Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1983 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Aug 17, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/365
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for detecting the presence of gas bubbles passing through an infusion tube (10). Sensing means (24, 26) responsive to fluid flow through the infusion tube develop a signal having a characteristic representative of a gas bubble to start a counter (28) which counts timing signals which also drive the pumping means (12, 14, 22) which force infusion liquid through the infusion tube. After a predetermined number of timing signals have been counted corresponding to a gas bubble having a size which may cause injury to a patient being infused, an alarm (30) is actuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.