Structural members for prosthetic mitral valves
First Claim
Patent Images
1. An apparatus, comprising:
- an outer frame formed of expanded shape memory alloy;
an inner frame formed of shape memory alloy and coupled to the outer frame, the inner frame having a first portion expanded from an initial shape and a second portion compressed from an initial shape; and
a prosthetic valve leaflet assembly disposed within the first portion of the inner frame,the second portion defining a lumen having a width and a length greater than the width, and configured to engage a tether within the lumen,wherein a distal end of the outer frame is disposed distal to a distal end of the inner frame.
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Abstract
A self-expanding wire frame for a pre-configured compressible transcatheter prosthetic cardiovascular valve, a combined inner frame/outer frame support structure for a prosthetic valve, and methods for deploying such a valve for treatment of a patient in need thereof, are disclosed.
770 Citations
21 Claims
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1. An apparatus, comprising:
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an outer frame formed of expanded shape memory alloy; an inner frame formed of shape memory alloy and coupled to the outer frame, the inner frame having a first portion expanded from an initial shape and a second portion compressed from an initial shape; and a prosthetic valve leaflet assembly disposed within the first portion of the inner frame, the second portion defining a lumen having a width and a length greater than the width, and configured to engage a tether within the lumen, wherein a distal end of the outer frame is disposed distal to a distal end of the inner frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, comprising:
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an outer frame formed of expanded shape memory alloy; an inner frame formed of shape memory alloy and coupled to the outer frame; and a prosthetic valve leaflet assembly disposed within a first portion of the inner frame, a second portion of the inner frame defining a lumen configured to receive an end portion of a tether and fixedly retain the end portion relative to the second portion of the inner frame, wherein a distal end of the outer frame is disposed distal to a distal end of the inner frame. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An apparatus, comprising:
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an outer frame formed of expanded shape memory alloy; an inner frame formed of shape memory alloy and coupled to the outer frame, the inner frame having a first portion expanded from an initial shape and a second portion compressed from an initial shape; and a prosthetic valve leaflet assembly disposed within the first portion of the inner frame, the second portion defining longitudinal extensions of struts connected circumferentially by pairs of opposed V-shaped connecting members, a lumen being defined within the connecting members and configured to engage a tether within the lumen, (1) vertices of the V-shaped connecting members configured to move closer together longitudinally and (2) open ends of the V-shaped connecting members configured to move closer together circumferentially, in response to a compressive force applied to the second portion. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification