Shape memory tubular stent with grooves
First Claim
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1. An implantable, radially distensible device comprising:
- a solid tubular structure having an outer circumference, an open first end and an opposed open second end and an open lumen extending therebetween, the solid tubular structure including a plurality of tubular structures and a graft, the plurality of tubular structures being spaced apart and unconnected from one another, wherein the graft is secured to the plurality of tubular structures and extends between and radially beyond the plurality of tubular structures, the graft having a continuous wall extending around an entire outer circumference of the tubular structures and between the first end and the second end, the wall having an outer surface and an opposed inner surface defining a wall thickness therebetween, the wall comprising a shape memory polymeric material, wherein the inner surface is in contact with outer surfaces of the plurality of tubular structures.
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Abstract
An implantable, radially distensible stent includes a tubular structure having opposed open ends. The wall of the stent is made from a shape memory polymeric material. Grooves may be disposed within an outer surface of stent wall to improve flexibility and drainage of the stent.
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Citations
20 Claims
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1. An implantable, radially distensible device comprising:
a solid tubular structure having an outer circumference, an open first end and an opposed open second end and an open lumen extending therebetween, the solid tubular structure including a plurality of tubular structures and a graft, the plurality of tubular structures being spaced apart and unconnected from one another, wherein the graft is secured to the plurality of tubular structures and extends between and radially beyond the plurality of tubular structures, the graft having a continuous wall extending around an entire outer circumference of the tubular structures and between the first end and the second end, the wall having an outer surface and an opposed inner surface defining a wall thickness therebetween, the wall comprising a shape memory polymeric material, wherein the inner surface is in contact with outer surfaces of the plurality of tubular structures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An implantable, radially distensible device comprising:
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a plurality of hollow cylindrical tubular structures spaced apart from one another, each tubular structure of the plurality of hollow cylindrical tubular structures formed of a shape memory polymeric material and comprising; an outer circumference; an open first end; an opposed open second end; a continuous wall extending around the entire outer circumference and between the first end and the second end to define an open lumen therethrough; and a wall thickness measured between an outer surface of the wall and an opposed inner surface of the wall; and a graft surrounding the plurality of hollow cylindrical tubular structures and extending between and separating adjacent ones of the plurality of spaced apart hollow cylindrical tubular structures, wherein adjacent spaced apart hollow cylindrical tubular structures are connected to each other by the graft alone. - View Dependent Claims (18)
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19. An implantable, radially distensible device comprising:
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a plurality of solid tubular structures, each solid tubular structure having an outer circumference, an open first end and an opposed open second end, the tubular structure having a solid wall extending around the entire outer circumference of the solid tubular structure and between the first end and the second end to define an open lumen therethrough, the wall having an outer surface and an opposed inner surface, the entire wall being free of gaps and comprising a shape memory polymeric material, wherein the tubular structure is a self-supporting wall structure; a plurality of grooves disposed in the outer surface of the wall, wherein the grooves are present in the wall when the device is in a radially contracted state and in a radially expanded state; and a graft secured to the outer surface of each of the tubular structures and extending therebetween. - View Dependent Claims (20)
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Specification