Facilitated balloon catheter exchange
First Claim
Patent Images
1. A balloon catheter comprising:
- a catheter body having a proximal end, a distal end, and a balloon inflation lumen extending to the distal end;
a balloon having a distal end, a proximal end attached to the distal end of the catheter body, and an expandable region between the distal and proximal ends; and
a guidewire tube disposed within the balloon and having a proximal end, a distal end, and a guidewire lumen therebetween, wherein the proximal end of the guidewire tube is spaced distally of the distal end of the catheter body, wherein the distal end of the guidewire tube is spaced-distally from the distal end of the expandable region of the balloon by a distance greater than the distance between the proximal end of the guidewire tube and the proximal end of the expandable region of the balloon.
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Abstract
A balloon catheter comprises a catheter body, a balloon at a distal end of the catheter body, and a guidewire tube within the balloon and separate from the catheter body. A catheter may be introduced over a guidewire by passing the guidewire through a guidewire lumen in the guidewire tube. No guidewire lumen is provided within the catheter body.
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Citations
27 Claims
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1. A balloon catheter comprising:
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a catheter body having a proximal end, a distal end, and a balloon inflation lumen extending to the distal end;
a balloon having a distal end, a proximal end attached to the distal end of the catheter body, and an expandable region between the distal and proximal ends; and
a guidewire tube disposed within the balloon and having a proximal end, a distal end, and a guidewire lumen therebetween, wherein the proximal end of the guidewire tube is spaced distally of the distal end of the catheter body, wherein the distal end of the guidewire tube is spaced-distally from the distal end of the expandable region of the balloon by a distance greater than the distance between the proximal end of the guidewire tube and the proximal end of the expandable region of the balloon. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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7. A balloon catheter as in claim 7, wherein the proximal neck portion of the balloon is joined under the distal end of the catheter body.
- 20. A catheter as in claim 20, wherein the attachment structure comprises a compliance tube having an outer diameter and an inner diameter that extends over the catheter body.
- 26. An improved catheter of the type comprising a catheter body and an interventional or diagnostic element at a distal end of the catheter body, wherein the improvement comprises a guidewire tube passing through the interventional element wherein the guidewire tube has a proximal end which is spaced distally of a distal end of the catheter body by a distance less than that of a distal end of the guidewire tube from the interventional element.
Specification