Patent ID: 7798985
Filing Date: 2010-09-21
Classification: A61M,B01D

Abstract:
1. A venous bubble trap ( 1 ), comprising a housing ( 2 ) having an axis; a fluid inlet ( 8 ) delivering a fluid into an interior of the housing ( 2 ); a fluid outlet ( 10 ) via which the fluid is carried away; a filter device ( 3 ) located in the interior of the housing ( 2 ), and dividing the housing interior into a pre-filter region ( 5 ) and a post-filter region ( 6 ), with the post-filter region ( 6 ) surrounding the pre-filter region ( 5 ) in at least some portions, wherein the inlet ( 8 ) is located so that it extends substantially over a tangent to a housing wall off the housing axis and thereby delivers the fluid off the housing axis directly toward the housing wall, causes a rotating motion in the fluid and results in a centrifugal force that causes bubbles to gather in a center of the rotating fluid, and wherein the filter device ( 3 ) tapers downward toward the fluid outlet ( 10 ) and has a filter inlet at the upper wider end through which the fluid flows into an interior of the downwardly tapering filter device and a lower narrower end, thus increasing a rotational velocity of the fluid and a bubble separation from the latter.