Balloon catheter
First Claim
1. A balloon catheter, comprising:
- a distal balloon, anda catheter extending from the proximal end of the balloon, out of the body, forming a conduit for balloon inflation liquid,said balloon catheter sized and adapted, with said balloon deflated to a relatively small size, for introduction of said distal balloon into the body, and said balloon adapted to be inflated to a relatively larger size by introduction of inflation liquid into said balloon from outside the body, via the conduit formed by said catheter, andsaid balloon catheter further comprising vent means disposed at the distal end of said balloon for selectively venting gas above a predetermined pressure from the interior of said balloon and restricting passage of inflation liquid from said balloon,said vent means comprising a multi-winding coil extending distally from within said balloon,interstitial spaces generally between the windings of said coil being of a predetermined small size selected to permit passage therethrough of gaseous molecules above a predetermined pressure and to restrict throughpassage of larger molecules of inflation liquid at operating pressure.
2 Assignments
0 Petitions
Accused Products
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. The vent consists of a multi-winding coil extending distally from within the balloon, interstitial spaces generally between the windings of the coil being of a predetermined size selected to permit passage therethrough of gaseous molecules above a predetermined pressure, while restricting throughpassage of larger molecules of inflation fluid.
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Citations
4 Claims
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1. A balloon catheter, comprising:
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a distal balloon, and a catheter extending from the proximal end of the balloon, out of the body, forming a conduit for balloon inflation liquid, said balloon catheter sized and adapted, with said balloon deflated to a relatively small size, for introduction of said distal balloon into the body, and said balloon adapted to be inflated to a relatively larger size by introduction of inflation liquid into said balloon from outside the body, via the conduit formed by said catheter, and said balloon catheter further comprising vent means disposed at the distal end of said balloon for selectively venting gas above a predetermined pressure from the interior of said balloon and restricting passage of inflation liquid from said balloon, said vent means comprising a multi-winding coil extending distally from within said balloon, interstitial spaces generally between the windings of said coil being of a predetermined small size selected to permit passage therethrough of gaseous molecules above a predetermined pressure and to restrict throughpassage of larger molecules of inflation liquid at operating pressure. - View Dependent Claims (2, 3, 4)
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Specification