Electrostatic blood defoamer for heart-lung machine

Details Electrostatic blood defoamer for heart-lung machine Electrostatic blood defoamer for heart-lung machine

1997-07-28

1999-03-16

Weiss, John G.

Surgery

Blood drawn and replaced or treated and returned to body

A61M 3700

Patent

active

058823255

ABSTRACT:
In a heart-lung machine, blood is defoamed without the use of defoaming chemicals by passing blood between parallel insulated electrodes whose electric field orients the blood protein molecules to break up the foam bubbles. The blood then passes into the venous reservoir through a bubble screen which traps any remaining bubbles.

REFERENCES:
patent: 4253456 (1981-03-01), Schindler et al.
patent: 5139684 (1992-08-01), Kaali et al.
patent: 5304164 (1994-04-01), Lindsay
patent: 5545130 (1996-08-01), Hofmann et al.

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