Dilatation catheter
First Claim
1. A dilatation catheter comprising an elongated flexible tubular body member, a tip member in spaced relation to the distal end of the body member, an annular inflatable bag interconnecting the tip member and the distal end of the body member, and means extending through the body member and bag and attached to the tip member for axially rotating the tip member and thereby axially twisting the bag, said means comprising a flexible tubular member having a fixed connection with the tip member and a flexible rod-like member within said tubular member attached to the tip member for selective connection and disconnection with respect thereto.
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Accused Products
Abstract
A dilatation catheter of the type having a balloon element adapted to be retracted by axial twisting following deflation is provided with a pair of concentrically related balloon twisting elements, one of which is adapted to be removed following full wind up of the balloon element so that the relative stiffness of the twisted balloon section of the catheter will be approximately the same as that of the balance of the catheter.
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Citations
7 Claims
- 1. A dilatation catheter comprising an elongated flexible tubular body member, a tip member in spaced relation to the distal end of the body member, an annular inflatable bag interconnecting the tip member and the distal end of the body member, and means extending through the body member and bag and attached to the tip member for axially rotating the tip member and thereby axially twisting the bag, said means comprising a flexible tubular member having a fixed connection with the tip member and a flexible rod-like member within said tubular member attached to the tip member for selective connection and disconnection with respect thereto.
- 6. A dilatation catheter comprising an elongated flexible tubular body member, a tip member in spaced relation to the distal end of the body member, an annular inflatable bag interconnecting the tip member and the distal end of the body member, and means comprising a selectively removable first element and a non-removable second element extending through the body member and bag and attached to the tip member for axially rotating the tip member and thereby axially twisting the bag.
Specification