Side branch stenting system using a main vessel constraining side branch access balloon and side branching stent
First Claim
1. An assembly comprising:
- a first stent having a longitudinal axis, a tubular wall and a side branch opening, anda catheter assembly extending through the side branch projection of the first stent, the catheter assembly comprising;
a catheter shaft,a balloon mounted on the catheter shaft, the balloon having two adjacent independently inflatable chambers, the balloon having a proximal balloon portion that defines a first of said chambers having a globular configuration when inflated, and a distal balloon portion that defines a second of said chambers disposed distally of the first chamber, the second chamber having a generally cylindrical configuration, anda second stent, the second stent having a tubular body which includes a main body portion, and, a plurality of finger-like projections the second stent mounted over the balloon such that the finger like projections are disposed over a portion of the first chamber and the main body portion is disposed over the second chamber,wherein the side branch opening in the first stent includes a tubular projection extending at an angle to the longitudinal axis from a portion of the tubular wall, the tubular projection overlapping with a portion of the second stent main body portion, and the proximal balloon portion has a proximal end attached to the catheter shaft in everted form.
1 Assignment
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Accused Products
Abstract
A side branch stenting system using a catheter/stent assembly having a balloon with adjacent globular and cylindrical portions and a stent mounted thereon over the cylindrical portion The stent has finger-like projections mounted over portion of the globular portion of the balloon. At a bifurcation site with another stent in place in the main vessel and having an opening into a side branch, the catheter/stent assembly is placed in the side branch and inflated. The cylindrical portion of the balloon expands the main stent body in the side vessel. The globular portion of the balloon inflates in the main vessel, constraining the main vessel and bending the finger-like projections around the circumference of the opening into the side branch.
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Citations
10 Claims
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1. An assembly comprising:
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a first stent having a longitudinal axis, a tubular wall and a side branch opening, and a catheter assembly extending through the side branch projection of the first stent, the catheter assembly comprising; a catheter shaft, a balloon mounted on the catheter shaft, the balloon having two adjacent independently inflatable chambers, the balloon having a proximal balloon portion that defines a first of said chambers having a globular configuration when inflated, and a distal balloon portion that defines a second of said chambers disposed distally of the first chamber, the second chamber having a generally cylindrical configuration, and a second stent, the second stent having a tubular body which includes a main body portion, and, a plurality of finger-like projections the second stent mounted over the balloon such that the finger like projections are disposed over a portion of the first chamber and the main body portion is disposed over the second chamber, wherein the side branch opening in the first stent includes a tubular projection extending at an angle to the longitudinal axis from a portion of the tubular wall, the tubular projection overlapping with a portion of the second stent main body portion, and the proximal balloon portion has a proximal end attached to the catheter shaft in everted form. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification