Intravenous set flow control device

Details Intravenous set flow control device Intravenous set flow control device

1982-08-06

1985-06-25

Cohen, Lee S.

Surgery

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

Treating material introduced into or removed from body...

128DIG12, 128DIG13, A61M 516

Patent

active

045251630

ABSTRACT:
A controller for an intravenous set is disclosed which operates both to maintain the instantaneous drip rate through a drip chamber included in the IV set at a desired value, and to modify this value repeatedly during the course of an infusion. The desired drip value is modified in accordance with the measured volumetric flow rate through the intravenous set such that if a particular infusion fluid produces abnormally small volume drops in the drip chamber, then the controller automatically increases the drip rate to compensate. In this way, extremely accurate control of the fluid flow rate is obtained without the need for complex infusion pumps. A disclosed embodiment operates to provide separate alarms for open line errors, air in line errors, and occlusion errors.

REFERENCES:
patent: 3252623 (1966-05-01), Corbin et al.
patent: 3609379 (1971-09-01), Hildebrandt
patent: 4018362 (1977-04-01), Uband
patent: 4286464 (1981-09-01), Tauber et al.
patent: 4291692 (1981-09-01), Bowman et al.
patent: 4331262 (1982-05-01), Snyder et al.
patent: 4354180 (1982-10-01), Harding

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