I.V. flow controller

Details I.V. flow controller I.V. flow controller

1998-07-06

1999-11-23

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137501, 13751625, 137517, 137550, 1375566, G05D 701

Patent

active

059882115

ABSTRACT:
An I.V. Flow Controller incorporating an adjustable, differential pressure regulator that provides a constant but adjustable differential pressure across a fixed orifice. One end of the adjustment range provides shut-off and the other end full-flow. The adjustment range covers flow rates from zero to 250 ml/hr. At a given setting, the flow rate is independent of the total hydrostatic head height between the supply reservoir and a patient, provided the head height is greater than the pressure drop across the orifice at the maximum regulated flow rate, plus venous pressure, plus the pressure drop in the indwelling catheter.

REFERENCES:
patent: 3288578 (1966-11-01), Witt
patent: 3886968 (1975-06-01), Murrell
patent: 4241757 (1980-12-01), Bron
patent: 4245669 (1981-01-01), Schmidt

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