Rapid exchange stent delivery balloon catheter
First Claim
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1. A method of making a rapid exchange stent delivery balloon catheter, comprising the steps of:
- a) providing a first length of first tubing having a first lumen, a proximal end and a distal end;
b) closing the first tubing distal end;
c) providing a first mold having interior dimensions substantially equal to desired balloon dimensions;
d) placing a portion of the first tubing into the first mold;
e) heating the portion of the first tubing in the first mold;
f) pressurizing the first lumen such that the portion of the first tubing in the first mold expands to the interior dimensions of the first mold, thereby forming a balloon;
g) cooling the portion of the first tubing in the first mold such that the portion of the first tubing in the first mold retains a shape of the interior of the first mold;
h) removing the first tubing from the first mold;
i) cutting the first tubing distal end at a point distal to a distal end of the balloon;
j) providing a second length of second tubing having a second lumen, a proximal end and a distal end;
k) inserting a mandrel into the second lumen at least adjacent the second tubing distal end;
l) placing the first tubing distal end and the second tubing distal end adjacent one another in a second mold; and
m) heating the first and second tubing distal ends until they bond together to form a catheter tip, thereby bonding the second tubing to the first tubing only at the first tubing distal end completely distal of the distal end of the balloon.
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Abstract
A rapid exchange stent delivery balloon catheter which allows exchange from a balloon angioplasty catheter to a stent delivery catheter without the need to replace the angioplasty catheter wire guide with an exchange-length wire guide before exchanging the catheters. The stent delivery catheter of the present invention includes a relatively short wire guide shaft which is bonded to the catheter shaft only at a location distal to the inflation lumen.
195 Citations
15 Claims
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1. A method of making a rapid exchange stent delivery balloon catheter, comprising the steps of:
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a) providing a first length of first tubing having a first lumen, a proximal end and a distal end; b) closing the first tubing distal end; c) providing a first mold having interior dimensions substantially equal to desired balloon dimensions; d) placing a portion of the first tubing into the first mold; e) heating the portion of the first tubing in the first mold; f) pressurizing the first lumen such that the portion of the first tubing in the first mold expands to the interior dimensions of the first mold, thereby forming a balloon; g) cooling the portion of the first tubing in the first mold such that the portion of the first tubing in the first mold retains a shape of the interior of the first mold; h) removing the first tubing from the first mold; i) cutting the first tubing distal end at a point distal to a distal end of the balloon; j) providing a second length of second tubing having a second lumen, a proximal end and a distal end; k) inserting a mandrel into the second lumen at least adjacent the second tubing distal end; l) placing the first tubing distal end and the second tubing distal end adjacent one another in a second mold; and m) heating the first and second tubing distal ends until they bond together to form a catheter tip, thereby bonding the second tubing to the first tubing only at the first tubing distal end completely distal of the distal end of the balloon. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of making a rapid exchange stent delivery balloon catheter, comprising the steps of:
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a) providing a first length of first tubing having a first lumen, a proximal end and a distal end; b) forming a balloon having proximal and distal ends in the first tubing adjacent the first tubing distal end; c) providing a second length of second tubing having a second lumen, a proximal end and a distal end; d) connecting and bonding the second tubing to the first tubing only at the first tubing distal end completely distal of the distal end of the balloon. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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Specification