Extendible stent apparatus
First Claim
1. A stent for placement in a bifurcated body lumen having a main branch and a side branch, said stent comprising:
- a main tubular stent body having a first end, a second end, a lumen therethrough, and a side opening have a plurality of laterally deployable elements therein.
1 Assignment
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Accused Products
Abstract
The present invention concerns novel stent apparatuses for use in treating lesions at or near the bifurcation point in bifurcated cardiac, coronary, renal, peripheral vascular, gastrointestinal, pulmonary, urinary and neurovascular vessels and brain vessels. More particularly, the invention concerns a stent apparatus with at least one side opening which may further comprise an extendable stent portion laterally extending from the side opening and at least partly in registry with the wall of the side opening. Devices constructed in accordance with the invention include, singularly or in combination, a main expandable stent comprising at least one substantially circular side opening located between its proximal and distal end openings, which side opening may further comprise an expandable portion extending radially outward from the edges of the side opening; and a branch stent comprising proximal and distal end openings and which may further comprise a contacting portion at its proximal end, and which may optionally be constructed to form either a perpendicular branch or a non-perpendicular branch when inserted through a side opening of the main stent. The stents of the invention are marked with, or at least partially constructed of, a material which is imageable during intraluminal catheterization techniques, most preferably but not limited to ultrasound and x-ray.
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Citations
21 Claims
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1. A stent for placement in a bifurcated body lumen having a main branch and a side branch, said stent comprising:
a main tubular stent body having a first end, a second end, a lumen therethrough, and a side opening have a plurality of laterally deployable elements therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 19, 20)
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11. A stent for placement in a bifurcated body lumen, said stent comprising:
a main tubular body having a first end, a second end, and a side opening between said ends, wherein a first portion of the main tubular body between the first end and the side hole opens in response to a first radially outward pressure and a second portion of the main tubular body between the side hole and the second end opens in response to a second pressure, wherein the first pressure is less than the second pressure. - View Dependent Claims (12, 13, 14, 17, 21)
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16. A method for attaching a second stent to a first stent, said method comprising:
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expanding a main tubular stent body; and
laterally deflecting a plurality of elements disposed about a side opening on the main tubular stent body.
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18. A method for deploying a stent in a bifurcated body lumen, said method comprising:
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providing a stent having a first portion, a second portion, and a side hole between said portions;
expanding a first portion against a luminal wall segment on one side of the bifurcation;
aligning the side hole with the branch lumen; and
expanding the second portion on the other side of the bifurcation.
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Specification