Bifurcated stent with open ended side branch support
First Claim
1. A stent having a central lumen extending between proximal and distal ends of the stent, a circumference circumscribing the central lumen, the stent comprising:
- a side branch structure defining an inner side branch cell, the inner side branch cell having a shape different from any other cell of the stent;
a first support member and a second support member positioned on opposite sides of the side branch structure, said opposite sides located across the side branch structure from one another in a stent circumferential direction along said circumference, the first support member and the second support member each comprising a strut width that is greater than the width of a strut included in the side branch structure; and
a first connecting member positioned at a proximal end of the side branch structure and a second connecting member positioned at a distal end of the side branch structure, each connecting member connected at one end to the first support member and connected at the other end to the second support member, each connecting member comprising a serpentine structure having a plurality of first struts, a plurality of second struts, and a plurality of turns connecting ends of the first struts to ends of the second struts, wherein the first struts are straight struts and the second struts have a first straight portion at a first end of the second strut, a second straight portion at a second end of the second strut, and a jog portion with a single u-shaped member connecting the first straight portion to the second straight portion.
1 Assignment
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Accused Products
Abstract
In some embodiments, a stent comprises a side branch structure defining an inner side branch cell. The inner side branch cell has a shape that is different from any other cell of the stent. The stent further comprises first and second support members, which are positioned on opposite sides of the side branch structure. The first and second support members each have a strut width that is greater than the width of a strut included in the side branch structure. The stent further comprises first and second connecting members, which are positioned on opposite ends of the side branch structure. Each connecting member is connected at one end to the first support member and is connected at the other end to the second support member. Each connecting member comprises a serpentine structure having a plurality of straight struts and turns. One or both of the connecting members includes at least one straight strut that has a length that is at least ten times its width. In some embodiments, each connecting member comprises at least four struts that have a length that is at least then times their width.
384 Citations
20 Claims
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1. A stent having a central lumen extending between proximal and distal ends of the stent, a circumference circumscribing the central lumen, the stent comprising:
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a side branch structure defining an inner side branch cell, the inner side branch cell having a shape different from any other cell of the stent; a first support member and a second support member positioned on opposite sides of the side branch structure, said opposite sides located across the side branch structure from one another in a stent circumferential direction along said circumference, the first support member and the second support member each comprising a strut width that is greater than the width of a strut included in the side branch structure; and a first connecting member positioned at a proximal end of the side branch structure and a second connecting member positioned at a distal end of the side branch structure, each connecting member connected at one end to the first support member and connected at the other end to the second support member, each connecting member comprising a serpentine structure having a plurality of first struts, a plurality of second struts, and a plurality of turns connecting ends of the first struts to ends of the second struts, wherein the first struts are straight struts and the second struts have a first straight portion at a first end of the second strut, a second straight portion at a second end of the second strut, and a jog portion with a single u-shaped member connecting the first straight portion to the second straight portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A stent having a central lumen extending between proximal and distal ends of the stent, a circumference circumscribing the central lumen, the stent comprising:
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a side branch structure defining an inner side branch cell, the inner side branch cell having a shape different from any other cell of the stent; a first support member and a second support member positioned on opposite sides of the side branch structure, said opposite sides located across the side branch structure from one another in a stent circumferential direction along said circumference, the first support member and the second support member each comprising a strut width that is greater than the width of a strut included in the side branch structure; and a first connecting member positioned at a proximal end of the side branch structure and a second connecting member positioned at a distal end of the side branch structure, each connecting member connected at one end to the first support member and connected at the other end to the second support member, each connecting member comprising a serpentine structure having a plurality of struts and turns, including at least one straight strut wherein a length of the strut is at least ten times its width and at least one second strut having a first straight portion at a first end of the second strut, a second straight portion at a second end of the second strut, and a portion with a single u-shaped jog connecting the first straight portion to the second straight portion, wherein said second strut is connected by said turn to said straight strut; wherein the stent does not include any straight struts that connect directly between the first support member and the second support member.
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17. A stent having a length and a central lumen spanning between a proximal end and a distal end, and a circumference circumscribing the central lumen, the stent comprising:
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a side branch structure defining an inner side branch cell, the inner side branch cell having a shape different from any other cell of the stent, the side branch structure comprising a serpentine ring extending around the inner side branch cell, the side branch structure spanning a portion of said length; a first support member and a second support member positioned on opposite sides of the side branch structure, said opposite sides located across the side branch structure from one another in a stent circumferential direction, wherein said stent circumferential direction is a direction along said circumference circumscribing the central lumen, the first support member and the second support member each spanning said portion of said length occupied by the side branch structure, the first support member and the second support member each comprising a strut width that is greater than the width of a strut included in the side branch structure; and a first connecting member positioned at a proximal end of the side branch structure and a second connecting member positioned at a distal end of the side branch structure, each connecting member connected at one end to the first support member and connected at the other end to the second support member, each connecting member comprising a serpentine structure having a plurality of first struts, a plurality of second struts, and a plurality of turns connecting ends of the first struts to ends of the second struts, wherein the first struts are straight struts and the second struts have a first straight portion at a first end of the second strut, a second straight portion at a second end of the second strut, and a jog portion with a single u-shaped member connecting the first straight portion to the second straight portion. - View Dependent Claims (18, 19, 20)
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Specification