Method and apparatus for metered infusion of fluids

Details Method and apparatus for metered infusion of fluids Method and apparatus for metered infusion of fluids

1979-12-13

1981-07-14

Pellegrino, Stephen C.

Surgery

Respiratory method or device

Ozone or ion generation

128DIG12, 417477, A61M 500

Patent

active

042780853

ABSTRACT:
Metering apparatus for metering the flow of fluid through an administration set includes a peristaltic-type metering pump which repeatedly and progressively compresses a section of vinyl tubing of the administration set to provide a desired flow rate. For improved metering accuracy the fluid is maintained under pressure upline and downline of the metering pump to assist the tubing in becoming fully restored following each compression by the pump. In the illustrated embodiment, upline pressure is provided by a peristaltic-type pressure pump which is operated at a controlled rate to maintain a predetermined upline pressure, and downline pressure is provided by a spring-biased plunger which bears against the tubing downline of the metering pump to partially occlude the tubing.

REFERENCES:
patent: 2366424 (1945-01-01), Perry
patent: 2393838 (1946-01-01), Tarbox
patent: 2483924 (1949-10-01), Moulinier
patent: 3620650 (1971-11-01), Shaw
patent: 3675653 (1972-07-01), Crowley et al.
patent: 3726613 (1973-04-01), Casimer
patent: 3731680 (1973-05-01), Wright
patent: 3990444 (1976-11-01), Vial
patent: 4155362 (1979-05-01), Jess
patent: 4210138 (1980-07-01), Jess et al.
patent: 4217993 (1980-08-01), Jess et al.

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