Fixed volume infusion device

Details Fixed volume infusion device Fixed volume infusion device

1979-04-06

1981-04-21

Truluck, Dalton L.

Surgery

Respiratory method or device

Ozone or ion generation

222450, 137179, A61M 500

Patent

active

042626684

ABSTRACT:
A flow regulator is disclosed for controlling the intravenous infusion of parenteral solution or the like to a patient. The solution flows through passageways in a housing, including a fixed volume portion. Fluid control means upstream and downstream of the fixed volume portion alternately open and close inlet and outlet passageways to periodically fill and empty the fixed volume portion, which is vented to allow displacement air to enter or exit. Hydrophobic filter means are provided in the vent path to permit venting but to prevent the escape of liquid. Hydrophilic filter means are provided downstream of the fixed volume portion to prevent gas or air from passing to the patient. The alternate opening and closing of the fluid control means in the inlet and outlet passageways permits a maximum fixed volume of liquid to be dispensed to the patient.

REFERENCES:
patent: 4030495 (1977-06-01), Virag
patent: 4072292 (1978-02-01), Banon
patent: 4121584 (1978-10-01), Turner
patent: 4136693 (1979-01-01), Dyke
patent: 4142523 (1979-03-01), Stegeman
patent: 4142524 (1979-03-01), Jassawalla et al.
patent: 4185759 (1980-01-01), Zissimopoulos

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