Abstract: A balloon catheter having a distal ballon, and a catheter extending from the proximal end of the balloon, out of the body, forming a conduit for ballon inflation fluid, is sized and adapted, with the balloon deflated to a relatively small size, for introduction of the balloon into the body, and the balloon is adapted to be inflated to a relatively larger size by introduction of inflation fluid into the balloon for outside the body via the conduit. The balloon catheter includes a vent disposed at the distal end of the balloon for selectively venting gas above a predetermined pressure from the interior of the balloon while restricting passage of inflation fluid from the balloon at operating pressure.

Abstract: A balloon catheter having a distal balloon, and a catheter extending from the proximal end of the balloon, out of the body, forming a conduit for balloon inflation fluid, is sized and adapted, with the balloon deflated to a relatively small size, for introduction of the balloon into the body, and the balloon is adapted to be inflated to a relatively larger size by introduction of inflation fluid into the balloon for outside the body via the conduit. The balloon catheter includes a vent disposed at the distal end of the balloon for selectively venting gas above a predetermined pressure from the interior of the balloon while restricting passage of inflation fluid from the balloon at operating pressure.