Method for retaining a vascular stent on a catheter
First Claim
Patent Images
1. A method of mounting a stent on a balloon catheter, comprising:
- positioning the stent on a balloon of the balloon catheter;
applying a first radially compressive force on an outer surface of the stent, thereby decreasing the outer diameter of the stent on the balloon catheter;
pressurizing and heating the balloon while restricting radial expansion of the outer surface of the stent; and
applying a second radially compressive force on the outer surface of the stent.
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Accused Products
Abstract
A method of securely mounting a stent on a balloon of a balloon catheter. The method generally includes crimping a stent on a balloon of a balloon catheter, and positioning the balloon with the drug delivery stent thereon within a polished bore of a mold formed at least in part of a metallic material. The balloon is pressurized and heated within the mold as the mold radially restrains the stent from expanding. The stent is re-crimped on the balloon after removal from the mold to increase retention of the stent on the balloon.
133 Citations
20 Claims
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1. A method of mounting a stent on a balloon catheter, comprising:
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positioning the stent on a balloon of the balloon catheter; applying a first radially compressive force on an outer surface of the stent, thereby decreasing the outer diameter of the stent on the balloon catheter; pressurizing and heating the balloon while restricting radial expansion of the outer surface of the stent; and applying a second radially compressive force on the outer surface of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of mounting a stent on a balloon catheter, comprising:
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positioning a stent on a balloon catheter, the balloon catheter having an elongated shaft with an inflation lumen and a guidewire lumen and an inflatable balloon on a distal shaft section with an interior in fluid communication with the inflation lumen, and the stent having an open-walled body of stent struts with gaps between adjacent stent struts; applying a first radially compressive force on an outer surface of the stent and thereby decreasing the outer diameter of the stent on the balloon catheter; heating the balloon and introducing inflation media into the interior of the balloon to radially expand the balloon with the stent restrained from radially expanding, wherein the balloon expands into the stent gaps to embed the stent in an outer surface of the balloon; removing the inflation media from the balloon interior; and applying a second radially compressive force on an outer surface of the stent, thereby decreasing the outer diameter of the stent on the balloon catheter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of increasing retention of an intravascular device on a balloon catheter, comprising:
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a first stage of crimping the intravascular device onto a balloon of the balloon catheter; a second stage of heating and pressurizing the balloon; and a third stage of re-crimping the intravascular device onto the balloon of the balloon catheter. - View Dependent Claims (19, 20)
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Specification