Patent ID: 8882696

Claim:
A venous blood reservoir used during cardiopulmonary bypass comprising: a. An air purging chamber to remove air from venous blood comprising: i. a venous bottom and a venous top; ii. a venous vertical wall extended from the venous bottom; iii. a venous inlet port; iv. a venous outlet port; v. a venous screen interposed between the venous inlet port and the venous outlet port, the venous screen forming an inlet venous blood chamber and providing a fluid communication between the venous inlet port and the venous outlet port, forming a venous outlet chamber between the venous screen and the venous vertical wall, and hindering air entering the venous inlet port from reaching the venous outlet port; vi. a venous defoamer to collapse venous blood foam and, vii. an air exhaust port in fluid communication with the ambient atmosphere and, b. a clean blood chamber comprising: i. a clean bottom in fluid communication with the air purging chamber; ii. a clean top and a clean inlet port; iii. a clean outlet in fluid communication with the venous outlet port; iv. a clean means to deaerate the clean blood and, c. a sucker blood chamber to filter and defoam sucker blood comprising: i. a sucker bottom and a sucker top; ii. a sucker vertical wall extending from the sucker bottom; iii. a sucker inlet port; iv. a sucker outlet located along the sucker bottom; v. a sucker filter that includes a sucker defoamer to defoam sucker blood, the sucker filter interposed between the sucker inlet port and the sucker outlet; vi. a means to open and close the sucker outlet and, vii. a fluid path from the sucker bottom allowing filtered sucker blood to be withdrawn from the bottom of the sucker blood chamber, wherein the sucker vertical wall separates the clean blood from the sucker blood chamber such that when the means to open and close the sucker outlet is closed, the clean blood is deaerated prior to it combining with the venous blood without the clean blood contacting the sucker filter or the sucker blood.