Body cavity prosthesis
First Claim
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1. A prosthesis configured to engage intralumenal tissue when deployed within a body cavity, the prosthesis comprising:
- an expandable frame comprising a first end and a second end and a longitudinal axis extending therethrough, the frame configured to radially expand and contract for deployment within the body cavity;
a plurality of first anchors each having a base connected to a first portion of the frame and a plurality of second anchors each having a base connected to a second portion of the frame, wherein the first portion is closer to the first end than the second portion is to the first end, and the second portion is closer to the second end than the first portion is to the second end, wherein the second portion of the frame comprises a plurality of foreshortening cells and the first portion of the frame comprises a plurality of longitudinally extending struts that are each connected to a foreshortening cell at a connection location and extend away from the foreshortening cells toward the first end in a direction generally parallel with the longitudinal axis;
wherein when the frame is in an expanded configuration;
outermost ends of the first anchors are positioned radially outward from the frame and extend generally toward the second end of the frame so that the outermost end of each first anchor is closer to the second end than the base of that first anchor is to the second end;
outermost ends of the second anchors are positioned radially outward from the frame and extend generally toward the first end of the frame in a direction substantially parallel with the longitudinal axis so that the outermost end of each second anchor is closer to the first end than the base of that second anchor is to the first end;
the outermost ends of the first anchors are axially spaced from the outermost ends of the second anchors; and
at least some of the first anchors comprise a first strut and a second strut extending radially outward from the frame and extending longitudinally along a length of the frame in a direction generally toward the second end, the first and second struts joining at a free apex at a location radially outward from the frame, wherein the base of the first anchors is longitudinally spaced away from the connection location such that the base of the first anchors is located closer to the first end of the frame than the connection location of the longitudinally extending struts to the foreshortening cells is to the first end; and
wherein the frame is configured such that radial expansion of the frame causes the first anchors and second anchors to draw closer together.
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Abstract
A prosthesis can be configured to be deployed within a body cavity. The prosthesis has an expandable frame, a plurality of proximal anchors, and a plurality of distal anchors, where the various anchors are connected to the frame. Radial expansion of the frame can cause the ends of the proximal anchors and the ends of the distal anchors to draw closer together.
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Citations
19 Claims
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1. A prosthesis configured to engage intralumenal tissue when deployed within a body cavity, the prosthesis comprising:
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an expandable frame comprising a first end and a second end and a longitudinal axis extending therethrough, the frame configured to radially expand and contract for deployment within the body cavity; a plurality of first anchors each having a base connected to a first portion of the frame and a plurality of second anchors each having a base connected to a second portion of the frame, wherein the first portion is closer to the first end than the second portion is to the first end, and the second portion is closer to the second end than the first portion is to the second end, wherein the second portion of the frame comprises a plurality of foreshortening cells and the first portion of the frame comprises a plurality of longitudinally extending struts that are each connected to a foreshortening cell at a connection location and extend away from the foreshortening cells toward the first end in a direction generally parallel with the longitudinal axis; wherein when the frame is in an expanded configuration; outermost ends of the first anchors are positioned radially outward from the frame and extend generally toward the second end of the frame so that the outermost end of each first anchor is closer to the second end than the base of that first anchor is to the second end; outermost ends of the second anchors are positioned radially outward from the frame and extend generally toward the first end of the frame in a direction substantially parallel with the longitudinal axis so that the outermost end of each second anchor is closer to the first end than the base of that second anchor is to the first end; the outermost ends of the first anchors are axially spaced from the outermost ends of the second anchors; and at least some of the first anchors comprise a first strut and a second strut extending radially outward from the frame and extending longitudinally along a length of the frame in a direction generally toward the second end, the first and second struts joining at a free apex at a location radially outward from the frame, wherein the base of the first anchors is longitudinally spaced away from the connection location such that the base of the first anchors is located closer to the first end of the frame than the connection location of the longitudinally extending struts to the foreshortening cells is to the first end; and wherein the frame is configured such that radial expansion of the frame causes the first anchors and second anchors to draw closer together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification