BLOOD OXYGENATING DEVICE WITH HEAT EXCHANGER

• US 3,853,479 A
• Filed: 06/23/1972
• Issued: 12/10/1974
• Est. Priority Date: 06/23/1972
• Status: Expired due to Term

• Current Assignee: Sherwood Medical Company (Medtronic Plc)
• Original Assignee: Daniel A. Talonn, Denton A. Cooley
• Inventors: Talonn, Daniel A., Cooley, Denton A.
• Primary Examiner(s): Richman, Barry S.
• Application Number:
  US05/265,864
• Time in Patent Office: 900 Days
• Field of Search: 23/258.5 128/DIG.3 261/DIG.28 165/46 195/1.8
• US Class Current: 422/46
• CPC Class Codes: A61M 2205/366 by liquid heat exchangers
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media
• CPC Class Codes: Y10S 128/03 Heart-lung
• CPC Class Codes: Y10S 261/28 Blood oxygenators

Abstract

A blood oxygenation device with a heat exchanger that includes a pair of plates disposed against the opposite sides of a flexible blood containing chamber of the device. The plates are relatively movable to selectively vary the volume of the chamber and the blood priming volume of the device. One or both of the plates are used as a heat exchange member to raise or lower the temperature of the blood flowing in the oxygenation device.

Claims

1. IN COMBINATION, A BLOOD OXYGENATION DEVICE INCLUDING AN OXYGENATOR CHAMBER, MEANS FOR INTRODUCING VENOUS BLOOD AND OXYGENATING GAS TO SAID OXYGENATOR CHAMBER FOR PRODUCING GAS BUBBLES IN THE BLOOD TO OXYGENATE THE BLOOD, A DEFOAMING CHAMBER CONNECTED TO RECEIVE BLOOD FROM SAID OXYGENATOR CHAMBER AND HAVING ANTI-FOAM MEANS THEREIN FOR ASSISTING IN THE REMOVAL OF EXCESS GAS AND VENT MEANS FOR VENTING EXCESS GAS TO ATMOSPHERE, AND A SUPPLE PLASTIC BLOOD SETTLING RESERVOIR CHAMBER CONNECTED TO RECEIVE BLOOD FROM SAID DEFOAMING CHAMBER, SAID RESERVOIR CHAMBER HAVING AN OUTLET FOR DISCHARGING OXYGENATED BLOOD, AND BLOOD TEMPERATURE CONTROL MEANS INCLUDING A HEAT EXCHANGER HAVING A PAIR OF RELATIVELY

2. The combination according to claim 1 wherein said adjustment means includes indicia to indicate the relative positions of said plates.

3. The combination according to claim 1 wherein said reservoir chamber and the other of said plates are transparent.

4. The combination according to claim 1 wherein said reservoir chamber portion comprises the major surface area of said reservoir chamber.

5. The combination according to claim 1 wherein said plates are adjustable to compress a main portion of said reservoir chamber and effect an upper reservoir chamber portion having a greater width than the portion of the reservoir chamber between said plates when blood is disposed in said reservoir chamber.

6. The combination according to claim 1 wherein at least one of said plates has a chamber therein, and said temperature varying means includes means for circulating heat exchange fluid through said chamber.

7. The combination according to claim 6 wherein said fluid is water.

8. The combination according to claim 1 further including upstanding frame means, and means hingedly connecting one of said plates to said frame means for pivotal movement toward and away from the other of said plates.

9. The combination according to claim 8 including means for connecting said oxygenation device to said frame means to support said oxygenation device between said plates.