Radiopaque stent
First Claim
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1. A radiopaque intravascular stent for use in a body lumen, comprising:
- a plurality of cylindrical rings interconnected to form the stent, each cylindrical ring having a first delivery diameter and a second expanded diameter;
each cylindrical ring having a proximal end and a distal end and a cylindrical wall extending circumferentially between the proximal end and the distal end of the cylindrical ring; and
at least one connecting link attaching each cylindrical ring to an adjacent cylindrical ring, wherein at least one of the connecting links is a high-mass connecting link having a non-linear shape;
wherein the stent is a unitary structure formed from a single material.
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Abstract
A tubular stent formed from a plurality of cylindrical rings and connecting links where selected connecting links are of comparatively high mass in relation to the other links. The high-mass links have sufficient mass to be visible during a fluoroscopy procedure when formed from a moderately radiopaque material such as stainless steel. The high-mass links being arranged in a spiral pattern along the length of the stent to ensure that the stent is fluoroscopically visible regardless of the stents orientation during the implantation procedure.
446 Citations
35 Claims
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1. A radiopaque intravascular stent for use in a body lumen, comprising:
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a plurality of cylindrical rings interconnected to form the stent, each cylindrical ring having a first delivery diameter and a second expanded diameter;
each cylindrical ring having a proximal end and a distal end and a cylindrical wall extending circumferentially between the proximal end and the distal end of the cylindrical ring; and
at least one connecting link attaching each cylindrical ring to an adjacent cylindrical ring, wherein at least one of the connecting links is a high-mass connecting link having a non-linear shape;
wherein the stent is a unitary structure formed from a single material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A radiopaque stent for use in a body lumen, comprising:
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a plurality of cylindrical rings interconnected to form the stent, each cylindrical ring having a first delivery diameter and a second expanded diameter;
each cylindrical ring having a plurality of peaks and valleys, the valleys of one cylindrical ring being circumferentially offset from the valleys of an adjacent cylindrical ring; and
at least one connecting link attaching each cylindrical ring to an adjacent cylindrical ring, the connecting link being positioned substantially within one of the valleys and attaching the valley to an adjacent peak, wherein at least one of the connecting links is a high-mass connecting link having a non-linear shape;
wherein the stent is a unitary structure formed from a single material. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A radiopaque stent for use in a body lumen, comprising:
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a plurality of cylindrical rings interconnected to form the stent, each cylindrical ring having a first delivery diameter and a second expanded diameter, wherein each cylindrical ring has a proximal end and a distal end and a cylindrical wall extending circumferentially between the proximal end and the distal end, and further wherein the cylindrical rings are formed of a plurality of U-shaped portions, Y-shaped portions, and W-shaped portions; and
at least one connecting link attaches each cylindrical ring to an adjacent cylindrical ring, the connecting links being positioned substantially within the cylindricial walls of the cylindrical rings and, wherein at least one of the connecting links is a high-mass link having a non-linear shape;
wherein the stent is a unitary structure formed from a single material. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A radiopaque intravascular stent for use in a body lumen, comprising:
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a plurality of cylindrical rings interconnected to form the stent, each cylindrical ring having a first delivery diameter and a second expanded diameter;
each cylindrical ring having a proximal end and a distal end and a cylindrical wall extending circumferentially between the proximal end and the distal end of the cylindrical ring; and
at least a portion of each ring having a higher mass than the rest of the ring, and wherein the portion of adjacent rings having a higher mass are circumferentially offset such that a pattern of higher mass metal is defined, the pattern extending from the proximal end of the stent to the distal end of the stent;
wherein the stent is a unitary structure formed from a single material. - View Dependent Claims (33, 34, 35)
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Specification