Patent ID: 7736339

Claim:
A catheter insertion device comprising a hollow catheter hub having a catheter tube attached at a distal end thereof, a needle hub having a hollow needle attached thereto and extending through the catheter hub and the catheter tube when in a ready position, a needle guard element arranged displaceably on the needle in the catheter hub and having an engaging section which engages with an engaging means formed near the needle tip when the hollow needle is removed from the catheter hub, wherein a check valve comprising a valve disc having radial slits starting from a middle section of the valve disc is disposed between the catheter tube and the needle guard element in the catheter hub through which the hollow needle extends in the ready position and which automatically closes after the removal of the needle, and wherein the check valve remains in the catheter hub when the hollow needle is removed from the catheter hub and the catheter tube; and wherein a valve actuating element is displaceably guided in the catheter hub and has a hollow space for receiving the needle guard element.