Blood oxygenator defoaming means

Claim 1

A BLOOD OXGENATOR COMPRISING A GENERALLY VERTICALLY EXTENDING OXYGENATING CHAMBER, MEAND FOR INTRODUCING VENOUS BLOOD AND OXYGENATING GAS INTO SAID OXYGENATING CHAMBER FOR PRODUCING FOAMED BLOOD THEREIN, A DEFOAMING CHAMBER CONNECTED IN FLUID COMMUNICATION WITH SAID OXYGENATING CHAMBER FOR RECEIVING FOAMED BLOOD FROM SAID OXYGENATION CHAMBER, SAID DEFOAMING CHAMBER EXTENDING ANGULARLY FROM SAID OXYGENATING CHAMBER AND HAVING A VENT IN AN UPPER WALL THEREOF FOR THE ESCAPE OF GAS THEREFROM, BLOOD OUTLET MEANS CONNECTED IN FLUID COMMUNICATION WITH SAID DEFOAMING CHAMBER FOR RECEIVING DEFOAMED BLOOD THEREFROM, SAID DEFOAMING CHAMBER HAVING A BOTTOM WALL CONTINUOUSLY DOWNWARDLY INCLINED OVER ITS ENTIRE LENGTH IN A DIRECTION EXTENDING FROM SAID OXYGENATING CHAMBER TO SAID BLOOD OUTLET MEANS AND A PREFORMED UNITARY DEFOAMING MEMBER OF SYNTHETIC PLASTIC DISPOSED IN SAID DEFOAMING CHAMBER FOR SUPPLYING DEFOAMED OXYGENATED BLOOD TO SAID BLOOD OUTLET, SAID DEFOAMING MEMBER BEING COATED WITH AN ANTI-FOAM AGENT, SAID DEFOAMING MEMBER HAVING AT LEAST ONE RECESS IN A BOTTOM WALL THEREOF WITH THE WALLS OF THE RECESS EXTENDING ABOVE AND BEING SPACED FROM THE BOTTOM WALL OF SAID DEFOAMING CHAMBER TO PROVIDE A SPACE OF SUBSTANTIAL LONGITUDINAL LENGTH BETWEEN SAID DEFOAMING MEMBER AND SAID BOTTOM WALL OF SAID DEFOAMING CHAMBER AT THE RECESS WHEREBY THE FLOW OF DEFOAMED BLOOD DOWN SAID INCLINED BOTTOM WALL IS IMPROVED AND SAID ANTI-FOAM AGENT IS CONSERVED THE BOTTOM WALL OF SAID DEFOAMING CHAMBER HAVING SPACED POINTS OF CONTACT WITH THE BOTTOM WALL OF SAID DEFOAMING MEMBER RESPECTIVELY ON THE LONGITUDINALLY OPPOSITE SIDES OF SAID RECESS SO THAT BLOOD FLOWING ALONG THE BOTTOM WALL OF SAID DEFOAMING CHAMBER FLOWS THROUGH PORTIONS OF SAID DEFOAMING MEMBER.