An air embolism protection system for extracorporeal circuits using centrifugal pumps

Author

Kresta, P. ; Campbell, D. ; Gonzalez, R. ; Dodd, W. ; Cafazzo, J.A. ; Noble, L.

Author_Institution

Dept. of Med. Eng., Toronto Hospital, Ont., Canada

Volume

1

fYear

1995

fDate

20-25 Sep 1995

Abstract

A system was developed to detect air bubbles in extracorporeal fluid circuits and to automatically occlude the tubing to prevent propagating the potentially fatal air volume. A Zevex ultrasonic air-detector was integrated into a device that used two parallel coupled AC-solenoids to mechanically clamp the extracorporeal fluid line. The device is capable of detecting bubbles 100 μl in size and to clamp lines with an outer diameter of ½ inch. The intended application is during extracorporeal perfusion using centrifugal pumps, which have no inherent air-embolism protection

Keywords

air; biomedical equipment; biomedical ultrasonics; bubbles; haemodynamics; safety; surgery; 0.5 in; Zevex ultrasonic air-detector; air bubbles detection system; air embolism protection system; automatic tubing occlusion; centrifugal pumps; extracorporeal circuits; extracorporeal fluid line; extracorporeal perfusion; mechanical clamping; parallel coupled AC-solenoids; potentially fatal air volume; Circuit testing; Clamps; Detectors; Head; Hospitals; Liver; Protection; Pumps; Solenoids; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.575304

Filename

575304