Balloon dilatation catheter with advanceable non-removable guide wire
First Claim
1. In a balloon dilatation catheter with an advanceable non-removable guide wire, a flexible tubular member having first and second lumens extending therethrough, an inflatable balloon carried by the distal extremity of the tubular member so that the first lumen extends through the balloon and is out of communication with the interior of the balloon and in which the second lumen is in communication with the interior of the balloon and a guide wire slidably mounted in the first lumen, a coil-like tip secured to the distal portion of the guide wire and having a cross-sectional area which is greater than that of the cross-sectional area of the first lumen and preventing removal of the guide wire through the first lumen, said guide wire being capable of being advanced longitudinally of the first lumen so that the coil-like tip of the guide wire can be advanced ahead of the balloon to facilitate the positioning of the balloon.
1 Assignment
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Accused Products
Abstract
Balloon dilatation catheter with an advanceable non-removable guide wire having a flexible tubular member with first and second lumens extending therethrough. An inflatable balloon is carried by the distal extremity of the tubular member so that the first lumen extends through the balloon and is out of communication with the interior of the balloon and in which the second lumen is in communication with the interior of the balloon. A guide wire is slidably mounted in the first lumen. A coil-like tip is secured to the distal portion of the guide wire and has a cross-sectional area which is greater than that of the cross-sectional area of the first lumen and prevents removal of the guide wire through the first lumen. The guide wire is capable of being advanced longitudinally of the first lumen so that the coil-like tip of the guide wire can be advanced ahead of the balloon to facilitate the positioning of the balloon.
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Citations
7 Claims
- 1. In a balloon dilatation catheter with an advanceable non-removable guide wire, a flexible tubular member having first and second lumens extending therethrough, an inflatable balloon carried by the distal extremity of the tubular member so that the first lumen extends through the balloon and is out of communication with the interior of the balloon and in which the second lumen is in communication with the interior of the balloon and a guide wire slidably mounted in the first lumen, a coil-like tip secured to the distal portion of the guide wire and having a cross-sectional area which is greater than that of the cross-sectional area of the first lumen and preventing removal of the guide wire through the first lumen, said guide wire being capable of being advanced longitudinally of the first lumen so that the coil-like tip of the guide wire can be advanced ahead of the balloon to facilitate the positioning of the balloon.
- 4. In a balloon dilatation catheter with an advancable non-removable guide wire, a first tubular element having a lumen extending therethrough, a second tubular element extending co-axially over the first flexible tubular element and forming a lumen between the first and second tubular elements extending longitudinally of the first and second tubular elements, an inflatable balloon carried by the distal extremity of the second tubular element and being in communication with the lumen formed between the first and second tubular elements, and a guide wire slidably mounted in the lumen in the first tubular element, a coil-like tip secured to the distal extremity of the guide wire and having a cross sectional area which is greater than that of the cross-sectional area of the lumen in the first tubular element and preventing removal of the guide wire through the lumen of the first tubular element, said guide wire being capable of being advanced longitudinally of the lumen in the first tubular element so that the coil-like tip of the guide wire can be advanced ahead of the balloon to facilitate the positioning of the balloon in a stenosis.
Specification