Uncaging stent
First Claim
Patent Images
1. An endoluminal prosthesis comprising:
- a scaffold comprising structural elements comprising a plurality of circumferential rings patterned from a first material comprising a non-degradable material, said scaffold being configured to expand from a crimped configuration to an expanded configuration;
wherein at least some of the circumferential rings comprise a plurality of struts joined by crowns;
wherein at least some of the circumferential rings have at least one separation region comprising a break or a gap in said rings;
wherein said at least one separation region comprises a lock and key having a geometry configured to hold the separation region together during expansion, said lock containing said key at least in part, said lock and key both being located within the same circumferential ring, said lock and key being configured to be held together during expansion and move apart only after expansion in a physiologic environment.
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Abstract
A stent (scaffold) or other luminal prosthesis comprising circumferential structural elements which provides high strength after deployment and allows for scaffold to uncage, and/or allow for scaffold or luminal expansion thereafter. The circumferential scaffold may be formed from degradable material, or may be formed from non-degradable material and will be modified to expand and/or uncage after deployment.
363 Citations
30 Claims
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1. An endoluminal prosthesis comprising:
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a scaffold comprising structural elements comprising a plurality of circumferential rings patterned from a first material comprising a non-degradable material, said scaffold being configured to expand from a crimped configuration to an expanded configuration; wherein at least some of the circumferential rings comprise a plurality of struts joined by crowns; wherein at least some of the circumferential rings have at least one separation region comprising a break or a gap in said rings; wherein said at least one separation region comprises a lock and key having a geometry configured to hold the separation region together during expansion, said lock containing said key at least in part, said lock and key both being located within the same circumferential ring, said lock and key being configured to be held together during expansion and move apart only after expansion in a physiologic environment. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 12, 13, 15, 16, 17, 18, 22, 28)
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4. An endoluminal prosthesis comprising:
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a scaffold comprising structural elements comprising a plurality of circumferential rings patterned from a first material comprising a non-degradable material, said scaffold being configured to expand from a crimped configuration to an expanded configuration; wherein at least some of the circumferential rings comprise a plurality of struts joined by crowns; wherein at least some of the circumferential rings have at least one separation region comprising a break or a gap in said rings; wherein said at least one separation region comprises a lock and key, wherein said lock contains said key at least in part, and a second material configured to hold the lock and key together during expansion and providing a continuous circumferential path around the scaffold, said lock and key both being located within the same circumferential ring, wherein said separation region being configured to separate forming at least one discontinuity in said circumferential ring after expansion in a physiologic environment. - View Dependent Claims (11, 14, 19, 20, 21, 23, 24, 25, 26, 27, 29, 30)
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Specification