Expandable coil stent
First Claim
1. A coil stent comprising a first curved segment and a second curved segment, the first and second curved segments arcing about the longitudinal axis of the stent, each of the first and second curved segments having a first end and a second end, the stent further comprising an expandable link extending between the second end of the first curved segment and the first end of the second curved segment, wherein the curved segments are made of shape memory alloys or shape memory polymers and the expandable link is made of a different material than that of the curved segments.
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Accused Products
Abstract
An implantable coil stent comprises at least a first curved segment and a curved segment which arc about the longitudinal axis of the stent. An expandable link extends between the second end of the first curved segment and the first end the second curved segment.
141 Citations
30 Claims
- 1. A coil stent comprising a first curved segment and a second curved segment, the first and second curved segments arcing about the longitudinal axis of the stent, each of the first and second curved segments having a first end and a second end, the stent further comprising an expandable link extending between the second end of the first curved segment and the first end of the second curved segment, wherein the curved segments are made of shape memory alloys or shape memory polymers and the expandable link is made of a different material than that of the curved segments.
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7. A coil stent comprising a first curved segment and a second curved segment, the first and second curved segments arcing about the longitudinal axis of the stent, each of the first and second curved segments having a first end and a second end, the stent further comprising an expandable link extending between the second end of the first curved segment and the first end of the second curved segment,
wherein the curved segments are in the form of a wire having an outer layer of material and a radiopaque core.
- 9. A coil stent having a longitudinal axis, the stent comprising a first segment which curves about the longitudinal axis of the stent, a third segment which curves about the longitudinal axis of the stent and a second segment disposed between the first and third segments, the first and third segments formed of a first material, the second segment formed of a second material different from the first material, the first, second and third segments joined end-to-end.
- 15. A medical coil implant for implantation in a bodily vessel, the implant having a longitudinal axis, the implant comprising a strand having a plurality of winding segments which wind about the longitudinal axis of the implant and a plurality of linking segments, the linking segments extending between winding segments which are adjacent one another, each linking segment having at least one bend wherein the linking segments are made of a first material and the winding segments are made of a second material different from the first material.
- 16. A medical coil implant for implantation in a bodily vessel, the implant having a longitudinal axis, the implant comprising a strand having a plurally of winding segments which wind about the longitudinal axis of the implant and a plurality of linking segments, the linking segments extending between winding segments which are adjacent one another, each linking segment having at least one bend wherein the linking segments and the winding segments are made from the same material, the linking segments having been subjected to a different treatment than the winding segments.
Specification