Infusion monitoring apparatus

Details Infusion monitoring apparatus Infusion monitoring apparatus

1983-08-17

1985-01-29

Coven, Edward M.

Surgery

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

Treating material introduced into or removed from body...

604122, 604245, A61M 514

Patent

active

044963467

ABSTRACT:
Apparatus for detecting the presence of gas bubbles passing through an infusion tube (10). Sensing means (24, 26) responsive to fluid flow through the infusion tube develop a signal having a characteristic representative of a gas bubble to start a counter (28) which counts timing signals which also drive the pumping means (12, 14, 22) which force infusion liquid through the infusion tube. After a predetermined number of timing signals have been counted corresponding to a gas bubble having a size which may cause injury to a patient being infused, an alarm (30) is actuated.

REFERENCES:
patent: 3935876 (1976-02-01), Massie et al.
patent: 4014206 (1977-03-01), Taylor
patent: 4280495 (1981-07-01), Lampert
patent: 4312341 (1982-01-01), Zissimopoulos et al.

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