Stent delivery devices
First Claim
Patent Images
1. A stent delivery system, the system comprising:
- a catheter having a catheter distal end and a catheter proximal end, said catheter proximal end comprising a rigid member;
a balloon positioned on said catheter distal end, said balloon having a balloon proximal end, a balloon distal end, and an inflation lumen therethrough, said balloon comprising;
a fixed wire unslidingly attached to said distal end of said balloon and extending distally past said balloon distal end, said fixed wire configured for guiding said catheter through a vessel;
a core wire positioned in said inflation lumen, said core wire extending from a distal end of said rigid member to said distal end of said balloon and attached to said distal end of said balloon and to said rigid member, said rigid member and said core wire providing transmission of torque forces from said catheter proximal end to said catheter distal end;
a guidewire lumen positioned alongside said balloon; and
a guidewire positioned through said guidewire lumen, said guidewire configured to enter a branch vessel while said balloon is in a main vessel, wherein said catheter, said balloon and said fixed wire are integratedly rotatable about the guidewire.
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Abstract
A stent delivery system for treating lesions is provided. The system is suitable for treatment of bifurcation lesions, 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 guidewire lumen, wherein the guidewire 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 lesions and vessel configurations.
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Citations
24 Claims
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1. A stent delivery system, the system comprising:
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a catheter having a catheter distal end and a catheter proximal end, said catheter proximal end comprising a rigid member; a balloon positioned on said catheter distal end, said balloon having a balloon proximal end, a balloon distal end, and an inflation lumen therethrough, said balloon comprising; a fixed wire unslidingly attached to said distal end of said balloon and extending distally past said balloon distal end, said fixed wire configured for guiding said catheter through a vessel; a core wire positioned in said inflation lumen, said core wire extending from a distal end of said rigid member to said distal end of said balloon and attached to said distal end of said balloon and to said rigid member, said rigid member and said core wire providing transmission of torque forces from said catheter proximal end to said catheter distal end; a guidewire lumen positioned alongside said balloon; and a guidewire positioned through said guidewire lumen, said guidewire configured to enter a branch vessel while said balloon is in a main vessel, wherein said catheter, said balloon and said fixed wire are integratedly rotatable about the guidewire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. 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 balloon positioned at said distal end; a guidewire lumen having a distal end, a proximal end and a body connecting said distal and proximal ends, wherein said body of said guidewire lumen includes a first portion positioned inside said body of said catheter, said first portion including said proximal end of said guidewire lumen, and further includes a second portion positioned outside said body of said catheter and at least partially alongside said balloon, said second portion including said distal end of said guidewire lumen; 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 (19, 20, 21, 22, 23, 24)
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Specification