Gas separation: processes – Degasification of liquid – Defoaming
Patent
1994-12-22
1997-01-07
Bhat, Nina
Gas separation: processes
Degasification of liquid
Defoaming
95268, 422 44, 604 4, 604122, 604408, B01D 900, A61M 114, A61M 300
Patent
active
055912516
ABSTRACT:
An apparatus for trapping bubbles in blood flowing in a circuit, such as an extracorporeal circuit, includes a housing which defines a substantially vertical chamber having an upper subchamber and a lower subchamber. Blood flowing in a substantially downward direction is introduced into the upper subchamber chamber through a delivery port in a direction substantially transverse to a longitudinal axis of the upper subchamber. A substantially frustoconical deflector is positioned in the chamber opposite and spaced apart from the delivery port. The deflector deflects at least a portion of the blood into the upper subchamber above the deflector. Thereafter, the blood is removed from the chamber out an exit port of the chamber. The deflection and redirection of blood within the chamber provide an opportunity for gases in the blood to separate from the blood in the chamber and also helps prevent stagnation of blood in the chamber which might lead to clotting of the blood. A method of removing bubbles from blood flowing in a circuit involves introducing blood into a substantially vertical chamber at an angle substantially transverse to a longitudinal vertical axis of the chamber. At least a portion of the blood is deflected upward in the chamber by contact with a frustoconical deflector to allow gases to separate from the blood. The blood is then removed from the chamber.
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Bhat Nina
Burton Carol W.
Cobe Laboratories, Inc.
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