STENT AND CATHETER ASSEMBLY AND METHOD FOR TREATING BIFURCATIONS
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Abstract
An apparatus and method is provided for stenting bifurcated vessels. A proximal angled stent is configured for implanting in a side-branch vessel wherein the proximal angled stent has an angulated portion that corresponds to the angle formed by the intersection of the side-branch vessel and the main vessel so that all portions of the side-branch vessel at the bifurcation are covered by the proximal angled stent. A main-vessel stent is provided for implanting in the main vessel, wherein the main-vessel stent has an aperture or stent cell that aligns with the opening to the side-branch vessel to permit unobstructed blood flow between the main vessel and the side-branch vessel. Side-branch and main-vessel catheter assemblies are advanced over a pair of guide wires for delivering, appropriately orienting, and implanting the proximal angled stent and the apertured stent.
120 Citations
40 Claims
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1-32. -32. (canceled)
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33. A method for stenting a bifurcation, comprising:
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providing a stent delivery assembly wherein a Y-shaped stent is mounted about a an expandable branched distal end of a catheter having a first branch and a second branch, a first guide wire extending through said first branch and engaging said second branch so as to maintain said branches in a converging configuration and a guide wire lumen extending through said second branch;
advancing a second guide wire through vasculature so that its distal end is positioned distal to said bifurcation;
backloading a proximal end of said second guide wire into the distal end of said second branch;
advancing said catheter over said second guide wire distal to said bifurcation;
retracting said first guide wire from engagement with said second branch;
positioning said Y-shaped stent in said bifurcation; and
expanding said branched distal end of said catheter. The method of claim 33, wherein both of said branches are expanded simultaneously. - View Dependent Claims (34, 35, 36, 38)
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37. The method of claim 37, wherein said further intervention comprises additional expansion of said stent.
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39. The method of claim 39, further comprising advancing said first guide wire distal to said bifurcation.
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40. The method of claim 40, wherein said bifurcation includes a main vessel and a side-branch vessel and wherein said first guide wire is extended into said side-branch vessel and said second guide wire is extended into said main vessel.
Specification