Expandable medical implant and percutaneous delivery
First Claim
1. An expandable ring with a uni-flow mechanism for implantation in a valvular annulus of a patient comprising a plurality of stenting elements evenly spaced along said annular ring, wherein said stenting elements are made of a shape-memory material, the shape-memory material having a preshape and a shape-transition temperature, wherein the shape-memory material expands to its preshape so as to expand the annular ring when said shape-memory material is heated to above the shape-transition temperature;
- said ring having a plurality of circular members.
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Accused Products
Abstract
An expandable annular ring for implantation in a valvular annulus and its percutaneous use thereof comprises a plurality of stenting elements made of a first shape-memory material having a first shape-transition temperature, wherein the first shape-memory material expands to a preshape when the first shape-memory material is heated to above the first shape-transition temperature; and a plurality of anchoring elements made of a second shape-memory material having a second shape-transition temperature that is higher than the first shape-transition temperature, wherein the second shape-memory material expands to the second preshape when the second shape-memory material is heated to above the second shape-transition temperature.
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Citations
20 Claims
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1. An expandable ring with a uni-flow mechanism for implantation in a valvular annulus of a patient comprising a plurality of stenting elements evenly spaced along said annular ring, wherein said stenting elements are made of a shape-memory material, the shape-memory material having a preshape and a shape-transition temperature, wherein the shape-memory material expands to its preshape so as to expand the annular ring when said shape-memory material is heated to above the shape-transition temperature;
said ring having a plurality of circular members. - View Dependent Claims (2, 3, 4)
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5. An expandable ring for implantation in a valvular annulus comprising:
- a plurality of stenting elements made of a first shape-memory material having a first preshape and a first shape-transition temperature, wherein the first shape-memory material expands to the first preshape when said first shape-memory material is heated to above the first shape-transition temperature; and
a plurality of anchoring elements made of a second shape-memory material having a second preshape and a second shape-transition temperature that is higher than the first shape-transition temperature, wherein the second shape-memory material expands to the second preshape when said second shape-memory material is heated to above the second shape-transition temperature. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- a plurality of stenting elements made of a first shape-memory material having a first preshape and a first shape-transition temperature, wherein the first shape-memory material expands to the first preshape when said first shape-memory material is heated to above the first shape-transition temperature; and
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18. A method for implanting an expandable ring having a plurality of stenting elements made of a first shape-memory material with a first shape-transition temperature and a plurality of anchoring elements made of a second shape-memory material with a second shape-transition temperature that is higher than the first shape-transition temperature in a valvular annulus of a patient, the method comprising steps of:
- (a) delivering said ring to the valvular annulus;
(b) expanding said ring to intimately contact an inner wall of the valvular annulus by heating the first shape-memory material above the first shape-transition temperature; and
(c) deploying the anchoring elements to penetrate into a surrounding annulus tissue by heating the second shape-memory material above the second shape-transition temperature. - View Dependent Claims (19, 20)
- (a) delivering said ring to the valvular annulus;
Specification