Fluid flow monitoring method and system

Details Fluid flow monitoring method and system Fluid flow monitoring method and system

1986-08-18

1988-05-10

Coven, Edward M.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 65, 604245, A61M 516

Patent

active

047432284

ABSTRACT:
The invention is directed to a fluid flow monitoring method and system for parenteral fluid delivery systems for use in situations, such as with sedentary patients, when wide pressure variations are not expected. The resistance of the fluid delivery system is determined from the ratio of pressure differences at high and low fluid flow rates to differences in the high and low fluid flow rates. The resistance is used to develop a pressure limit from the sum of the pressure at low fluid flow rates and the product of the resistance and the high fluid flow rate. The pressure limit is compared with the pressure monitored and if the pressure monitored exceeds the calculated pressure limit, an alarm is actuated to warn medical personnel of an occlusion or other fluid flow fault. Additionally, if the noise level (pressure) excess predetermined limits during the periods of low and high fluid flow, the pressure monitoring is terminated.

REFERENCES:
patent: 4217993 (1980-08-01), Jess et al.
patent: 4525163 (1985-06-01), Slavik et al.
patent: 4534756 (1985-08-01), Nelson
patent: 4613325 (1986-09-01), Abrams

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