Heart-lung machine

Claim 1

A HEART-LUNG MACHINE, COMPRISING: TUBE MEANS FOR DIVERTING BLOOD FROM THE HEART OF A PATIENT, SAID TUBE MEANS HAVING INPUT AND OUTPUT ENDS, OXYGENATING MEANS FOR INTRODUCING OXYGEN INTO THE BLOOD IN THE FORM OF BUBBLES CONNECTED TO THE OUTPUT OF SAID TUBE MEANS, SAID OXYGENATING MEANS BEING PROVIDED WITH OUTLET MEANS, A FLEXIBLE BAG RECEIVING SAID OXYGENATING OUTLET MEANS AND HAVING AN UPPER RESERVOIR PORTION ADAPTED TO RECEIVE BLOOD AND FROTH FROM SAID OXYGENATING MEANS, SAID BAG HAVING A LOWER SECTION EXTENDING LATERALLY FROM SAID UPPER PORTION AT AN INCLINATION WITH RESPECT TO THE HORIZONTAL AND SUPPORTED SO AS TO FORM A SHALLOW, FLAT BROAD FLOW AREA, SAID LOWER SECTION HAVING A LOWER EXIT OPENING, PUMPING MEANS OF PUMPING THE BLOOD INTO SAID PATIENT''S ARTERIAL SYSTEM CONNECTED TO THE LOWER OPENING OF SAID BAG, AN AIR MOTOR OPERATIVELY CONNECTED TO AND ACTUATING SAID PUMPING MEANS, SAID AIR MOTOR BEING PROVIDED WITH EXHAUST MEANS COMMUNICATINGG WITH SAID OXYGENATING MEANS, WHEREBY OXYGEN GAS EXHAUSTED FROM SAID AIR MOTOR MAY BE EMPLOYED AS THE OXYGEN SUPPLY FOR THE OXYGENATING MEANS, GAGING MEANS FOR MEASURING THE AMOUNT OF BLOOD IN SAID BAG OPERATIVELY ASSOCIATED THEREWITH, MEANS FOR CONTROLLING THE EXHAUST OXYGEN FLOW FROM SAID MOTOR TO SAID OXYGENATING MEANS AS A FUNCTION OF SAID AMOUNT OF BLOOD IN SAID BAG, AND SECOND TUBE MEANS CONNECTED TO SAID PUMP MEANS FOR RETURNING BLOOD TO THE PATIENT''S ARTERIAL SYSTEM.