Portal design for stent for treating bifurcated vessels
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Abstract
A stent pattern includes an improved portal region for repairing a main vessel and a side branch vessel forming a bifurcation. More particularly, the stent has rings aligned along a common longitudinal axis that are connected by links, where the stent has a proximal section, a distal section, and a central section (portal region). The number of rings and the expanded diameter of the sections are varied to create a “trap door” capable of expanding to a slightly larger diameter than the proximal section and the distal section of the stent. The configuration of the stent pattern of the portal region prevents the occurrence of portal overlap of immediately adjacent rings into the portal region during stent deployment. The stent is implanted at a bifurcation so that the proximal section and the distal section are in the main vessel, and the central section contacts at least a portion of the opening to the side branch vessel. A second stent can be implanted in the side branch vessel and abut the expanded central section to provide full coverage of the bifurcated area in the main vessel and the side branch vessel.
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Citations
83 Claims
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1-41. -41. (canceled)
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42. A stent for repairing a bifurcated vessel, comprising:
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a cylindrical body having a plurality of rings aligned along a common longitudinal axis;
each ring having a delivery diameter and an implanted diameter and a plurality of first peaks configured to spread apart to permit the rings to expand radially outwardly or compress radially inwardly;
the cylindrical body having a proximal section, a distal section, and a central section; and
at least one first peak of a central section ring being connected to at least one first peak of a proximal section ring by at least one link wherein the connected first peaks point toward each other, and at least one first peak in every ring is not connected to any first peak in an adjacent ring. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 83)
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75. A stent for repairing a bifurcated vessel, comprising:
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a cylindrical body having a plurality of rings aligned along a common longitudinal axis;
each ring having a delivery diameter and an implanted diameter and a plurality of first peaks configured to spread apart to permit the rings to expand radially outwardly or compress radially inwardly;
the cylindrical body having a proximal section, a distal section, and a central section;
at least one first peak of the central section being connected to at least one first peak of the proximal section by at least one link wherein the connected first peaks point toward each other, and at least one first peak in every ring is not connected to any first peak in an adjacent ring; and
wherein a central opening of the distal section is adjacent to the at least one first peak of the central section that is connected to the at least one first peak of the proximal section by the at least one link. - View Dependent Claims (76, 77, 78, 79)
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80. A stent for repairing a bifurcated vessel, comprising:
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a cylindrical body having a plurality of rings aligned along a common longitudinal axis;
each ring having a delivery diameter and an implanted diameter and a plurality of first peaks configured to spread apart to permit the rings to expand radially outwardly or compress radially inwardly;
the cylindrical body having a proximal section, a distal section, and a central section;
the proximal section having between one and fifteen rings;
the distal section having between one and fifteen rings;
the central section having between one and ten rings;
the central section having an expanded diameter greater than the expanded diameter of the proximal section and the distal section; and
at least one first peak of the central section is connected to at least one first peak of the proximal section by at least one link wherein the connected first peaks point toward each other, and at least one first peak of any one ring is not connected to any first peak of an adjacent ring.
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81. A stent for repairing a bifurcated vessel, comprising:
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a cylindrical body having a plurality of rings aligned along a common longitudinal axis;
each ring having a delivery diameter and an implanted diameter and a plurality of first peaks configured to spread apart to permit the rings to expand radially outwardly or compress radially inwardly;
the cylindrical body having a proximal section, a distal section, and a central section;
means for connecting the plurality of first peaks so that at least one first peak of the central section is connected to at least one first peak of the proximal section wherein the connected first peaks point toward each other, and at least one first peak of any one ring is not connected to any first peak of an adjacent ring. - View Dependent Claims (82)
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Specification