Bifurcation stent delivery devices
First Claim
Patent Images
1. A stent delivery system, the system comprising:
- a main elongated element for advancement within a main vessel, said main elongated element comprising;
a proximal end;
a distal end; and
a body connecting said proximal and distal ends;
an auxiliary elongated element for advancement within an auxiliary vessel, said auxiliary elongated element comprising;
a proximal end; and
a distal end, said auxiliary elongated element partially attached to said main elongated element; and
a crotch point, wherein at said crotch point, said body of said main elongated element is attached to said auxiliary elongated element, and wherein a location of said crotch point is configured to stop advancement of said system upon reaching a bifurcation.
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Abstract
A stent delivery system for treating bifurcations is provided. The system has a low profile and provides substantially predictable translational and rotational positioning. In one embodiment, the system includes a fixed wire balloon catheter and a partially attached side branch lumen, wherein the side branch lumen is attached to the catheter at a crotch point. The location of the crotch point is predetermined so as to provide substantially predictable positioning. Several embodiments of the system are described for various types of bifurcations and vessels.
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Citations
88 Claims
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1. A stent delivery system, the system comprising:
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a main elongated element for advancement within a main vessel, said main elongated element comprising;
a proximal end;
a distal end; and
a body connecting said proximal and distal ends;
an auxiliary elongated element for advancement within an auxiliary vessel, said auxiliary elongated element comprising;
a proximal end; and
a distal end, said auxiliary elongated element partially attached to said main elongated element; and
a crotch point, wherein at said crotch point, said body of said main elongated element is attached to said auxiliary elongated element, and wherein a location of said crotch point is configured to stop advancement of said system upon reaching a bifurcation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A stent delivery device, the device comprising:
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a catheter having a distal end and a proximal end;
a balloon positioned on said catheter, the balloon having a distal end and a proximal end, wherein said balloon is immovable with respect to said catheter;
a wire attached to said distal end of said balloon; and
a side element having a distal end and a proximal end, said side element at least partially attached to said balloon. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A stent delivery system, the system comprising:
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a catheter having a distal end and a proximal end;
a balloon positioned on said catheter, the balloon having a distal end and a proximal end;
a wire attached to said distal end of said balloon;
a side element having a distal end and a proximal end, said side element at least partially attached to said balloon; and
a crotch point, wherein at said crotch point, said side element and said balloon are attached, and wherein a location of said crotch point is configured to stop advancement of said system upon reaching a bifurcation. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 59, 60, 61, 62)
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56. A stent delivery system, the system comprising:
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a catheter having a distal end and a proximal end;
a balloon positioned on said distal end of said catheter, the balloon having a distal end and a proximal end, and wherein said balloon is immovable with respect to said catheter;
a stent positioned on said balloon, said stent having a side opening, wherein the side opening has a proximal end and a distal end; and
a side branch lumen having a distal end and a proximal end, wherein said proximal end is attached to a proximal end of said balloon, and wherein said distal end is positioned at said side opening of said stent. - View Dependent Claims (57, 58)
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63. A stent delivery system, the system comprising:
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a catheter having a distal end and a proximal end;
a stent positioned on said catheter, the stent having a distal end and a proximal end;
an auxiliary elongated element having a distal end and a proximal end, said auxiliary elongated element positioned outside of said stent; and
a crotch point located at said proximal end of said stent wherein said auxiliary elongated element is attached to said catheter at said crotch point. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71)
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72. A stent delivery system, the system comprising:
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a catheter having a distal end and a proximal end;
a distal balloon positioned on said distal end of said catheter, the distal balloon having a distal end and a proximal end;
a proximal balloon positioned on said catheter proximal to said distal balloon;
a stent positioned on said proximal balloon, the stent having a distal end and a proximal end;
an auxiliary elongated element having a distal end and a proximal end, said auxiliary elongated element positioned inside of said stent and exiting at said distal end of said stent; and
a crotch point located at said distal end of said stent wherein said auxiliary elongated element is attached to said balloon at said crotch point. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79)
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80. A catheter system comprising:
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a catheter having a distal end, a proximal end and a body connecting said distal and proximal ends;
a side branch lumen having a distal end, a proximal end and a body connecting said distal and proximal ends, wherein a first portion of said side branch lumen is positioned inside said body of said catheter, and a second portion of said side branch lumen is positioned outside said body of said catheter; and
an exit point located on said body of said catheter wherein said first portion is proximal to said exit point and said second portion is distal to said exit point. - View Dependent Claims (81, 82, 83, 84, 85, 86)
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87. A method for treating a bifurcation, the method comprising:
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introducing a side branch guidewire into a branch vessel;
providing a stent delivery system, wherein the system comprises;
a main elongated element for advancement within a main vessel, said main elongated element having a proximal end, a distal end, and a body connecting said proximal and distal ends;
a side branch element for advancement within said side branch vessel, said side branch element having a body which is partially attached to said main elongated element;
a crotch point, wherein at said crotch point, said bodies of said main and side branch elements are attached, and wherein a location of said crotch point is configured to stop advancement of said system at a bifurcation; and
a stent positioned on said main elongated element;
inserting a proximal end of said side branch guidewire into said distal end of said side branch lumen;
advancing said stent delivery system over said side branch guidewire until a location at which said advancing automatically stops due to said crotch point reaching said bifurcation; and
deploying said stent.
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88. A method for treating a bifurcation, the method comprising:
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providing a stent delivery system, wherein the system comprises;
a catheter having a balloon at a distal end thereof;
a fixed wire at a distal end of said balloon; and
a side branch lumen at least partially attached to said catheter, wherein a point of attachment defines a stopping point; and
advancing said stent delivery system through a main vessel until a location at which said advancing automatically stops due to said crotch point reaching said bifurcation.
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Specification