Stent delivery system
First Claim
1. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprisesa catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, andan inflatable dilatation balloon having proximal and distal ends,wherein the distal end of said first lumen opens into and is in fluid communication with the interior of the dilatation balloon and the second lumen extends longitudinally with the first lumen, the proximal end of the second lumen being adjacent to the proximal end of the first lumen, the distal end of the second lumen being open and distal to the distal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire.
2 Assignments
0 Petitions
Accused Products
Abstract
This invention relates to a balloon dilatation catheter and its use in delivering a balloon expandable stent. More particularly, the catheter comprises a first, inflation lumen extending therethrough and having distal and proximal ends, the distal end of the first lumen opening into and being in fluid communication with the interior of an inflatable dilatation balloon having distal and proximal ends, and a second lumen extending coextensively with and exterior to the dilatation balloon.
147 Citations
43 Claims
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1. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprises
a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, and an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of said first lumen opens into and is in fluid communication with the interior of the dilatation balloon and the second lumen extends longitudinally with the first lumen, the proximal end of the second lumen being adjacent to the proximal end of the first lumen, the distal end of the second lumen being open and distal to the distal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire.
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2. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprises
a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, and an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of the first lumen opens into and is in fluid communication with the interior of the dilatation balloon, the proximal end of the second lumen being open and being located substantially distal to the proximal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire.
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10. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprises
a first inflation lumen extending therethrough and having distal and proximal ends, the distal end of the said first lumen opening into and being in fluid communication with the interior of an inflatable dilatation balloon having distal and proximal ends, and a second lumen extending coextensively with the first lumen, having proximal and distal ends, wherein the proximal end of the second lumen is adjacent to the proximal end of the first lumen, the distal end of the second lumen is open and distal to the distal end of the balloon, and wherein the distal section of the second lumen is exterior to the balloon an has an opening proximal, adjacent, or distal to the proximal end of the dilatation balloon, and the section of the second lumen distal to the opening is enlarged as compared to the proximal section of the second lumen.
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18. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprises
a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, and an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of said first lumen opens into and is in fluid communication with the interior of the dilatation balloon and the second lumen extends longitudinally with the first lumen, the proximal end of the second lumen being adjacent to the proximal end of the first lumen, the distal end of the second lumen being open and distal to the distal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon and containing a rigid or substantially rigid triangularly-shaped lubricious liner, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire.
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26. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprises
a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, and an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of the first lumen opens into and is in fluid communication with the interior of the dilatation balloon, the proximal end of the second lumen being open and being located substantially distal to the proximal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon and containing a rigid or substantially rigid triangularly shaped lubricious liner, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire.
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30. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprises
a first, inflation lumen extending therethrough and having distal and proximal ends, the distal end of said first lumen opening into and being in fluid communication with the interior of an inflatable dilatation balloon having distal and proximal ends, and a second lumen extending coextensively with the first lumen, having proximal and distal ends, wherein the proximal end of the second lumen is adjacent to the proximal end of the first lumen, the distal end of the second lumen is open and distal to the distal end of the balloon, and wherein the distal section of the second lumen is exterior to the balloon and has an opening proximal, adjacent, or distal to the proximal end of the dilatation balloon, and the section of the second lumen distal to the opening is enlarged as compared to the proximal section of the second lumen and contains a rigid or substantially rigid triangularly shaped lubricious liner.
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36. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprises
a catheter shaft defining a first, inflation lumen and a second lumen, each of said first and second lumens having proximal and distal open ends, an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of the first lumen opens into and is in fluid communication with the interior of the dilatation balloon, the distal end of the second lumen being distal to the distal end of the first lumen and the second lumen being exterior to the dilatation balloon, the proximal and distal ends of the second lumen being relatively disposed perfusion openings, and the second lumen permitting blood flow past the dilatation balloon while the balloon is forcefully inflated with pressurized fluid.
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42. In a method for delivering a balloon-expandable stent wherein the stent in non-expanded form is firmly positioned around the balloon on the distal portion of a balloon dilatation catheter, the distal portion of said catheter is inserted percutaneously into a patient'"'"'s body to a desired site, the balloon is inflated to cause the stent to expand, the balloon is deflated, and the catheter is removed proximally from the patient'"'"'s body, the improvement wherein the balloon dilatation catheter comprises:
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a catheter shaft defining a first inflation lumen and a second lumen, each of said first and second lumens having proximal and distal ends, and an inflatable dilatation balloon having proximal and distal ends, wherein the distal end of said first lumen opens into and is in fluid communication with the interior of the dilatation balloon, and a portion of the second lumen extends longitudinally with a portion of the first lumen, the distal end of the second lumen being open and distal to the distal end of the first lumen, the section of the second lumen distal to the proximal end of the dilatation balloon being exterior to the dilatation balloon, the distal end of the second lumen being open and distal to the distal end of the dilatation balloon, and the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire.
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43. A balloon-expandable stent system for delivering a stent percutaneously to a desired site in a patent'"'"'s body and deploying such a stent by expanding it to hold open a body lumen, comprising:
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a catheter shaft defining an inflation lumen and guidewire lumen, said shaft and each lumen having proximal and distal ends; an inflatable dilatation balloon having and distal ends, said balloon being affixed to said catheter shaft near the distal end of the shaft; wherein the distal end of said inflation lumen opens into and is in fluid communication with the interior of the dilatation balloon, said guidewire lumen defining a proximal guidewire port disposed between said proximal end of the balloon and the proximal and of the inflation lumen, said guidewire lumen communicating between said proximal guidewire port and said guidewire distal end, whereby said guidewire lumen is adapted to slidingly accept a guidewire, the distal end of the guidewire lumen being open and distal to the inflation lumen distal end and the balloon distal end, the portion of the guidewire lumen distal to the proximal end of the balloon being exterior to the balloon, the second lumen being sufficiently linear to allow the catheter to be slidingly advanced over a guidewire; and a flexible stent crimped around said balloon in a deflated condition, such that said stent will expand when said balloon is inflated.
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Specification