Intravenous fluid flow monitor
US4898576A · kind A · utility
125Cited by
4References
23Claims
0Family size
Inventor
Key dates
| Filing date | Aug 22, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Aug 22, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/16859
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved system for monitoring the fluid flow through a fluid delvery system to a patient wherein the fluid flow rate is varied in a predetermined sequential manner. Corresponding changes in pressure in the line connecting the vein of a patient and the pump are detected and are used to derive signals indicative of the resistance or impedance in the line, which in turn can be used to determine whether the vein is normal, whether it is phlebitic, whether it is occluded, whether infiltration of the canula into the patient's soft tissue has occurred, or whether the continuity of tubing to the vein has been interrupted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.