Patent ID: 9717887
Date: 2017-08-01
CPC Classifications: A61M

Claim:
1. A catheter assembly, comprising: a catheter adapter having a distal end and a proximal end; an elongated catheter tube extending from the catheter adapter distal end; a distal chamber and a proximal chamber defined within the catheter adapter, the distal chamber communicating with the catheter tube; a divider interposed between the distal chamber and the proximal chamber; one or more vent channels extending between the distal chamber and the proximal chamber so as to communicate the distal chamber with the proximal chamber; and a hydrophobic porous material interposed between the distal chamber and the one or more vent channels, the hydrophobic porous material configured to allow air to pass therethrough so that air from the distal chamber can flow through the one or more vent channels to the proximal chamber, the hydrophobic porous material configured to repel blood so that blood within the distal chamber is prevented from flowing through the one or more vent channels.