Ivac Corporation

Ivac Medical Systems, Inc.

Clifford W Hague

Paul A Koenig

An infusion system with an air-in-line sensor is provided with improved apparatus and method for quickly and easily clearing small quantities of undissolved gas such as air from the sensor detection field. The infusion system includes an infusion pump having control components responsive to the air-in-line sensor to activate an alarm and/or to cease pump operation when undissolved gas is detected. A 'clear air' key or switch is provided on the pump for actuation by medical personnel to operate the pump in a manner delivering a small pulse of the infusion liquid to move a small detected quantity of gas past the air-in-line sensor. The system can be adapted for actuation of the 'clear air' key up to a selected number of times, while monitoring and accumulating the total fluid quantity delivered to a patient.

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Canyon Country, CA, United States of America

Clifford W Hague