Method of securing a prosthesis
First Claim
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1. A method of securing a prosthesis to a native heart valve, comprising:
- delivering a prosthesis into a patient, the prosthesis comprising;
an expandable frame extending along a longitudinal axis between a proximal end and a distal end, the expandable frame comprising a first and second row of cells;
a plurality of spaced-apart proximal anchors connected to the frame at the first row of cells;
a plurality of spaced-apart distal anchors connected to the frame at the second row of cells; and
a replacement valve seated within the frame; and
expanding the frame within the native heart valve of the patient with the replacement valve seated within the frame, wherein expansion of the frame causes the proximal anchors and the distal anchors to draw closer together with body tissue positioned between the proximal anchors and the distal anchors, wherein when the frame is in an expanded configuration;
each distal anchor of the plurality of distal anchors extends proximally to a proximal most portion of the distal anchor that is positioned radially outward from the frame;
the proximal most portions of the distal anchors extend in a direction that is more parallel with the longitudinal axis than with a transverse axis perpendicular to the longitudinal axis;
the proximal most portions of the distal anchors are spaced apart from the proximal anchors by less than two cell lengths; and
at least one of the distal anchors bends radially outwardly before bending to extend longitudinally toward the plurality of spaced-apart proximal anchors.
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Abstract
A method of securing a prosthesis atraumatically to body tissue can include one or more of the following steps. A prosthesis can be delivered into a patient. The prosthesis may include an expandable frame. The frame can be expanded within a body cavity of the patient. Expansion of the frame can causes respective ends of both proximal prongs and distal prongs to draw closer together to grasp native tissue between the respective ends of the proximal prongs and distal prongs.
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Citations
20 Claims
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1. A method of securing a prosthesis to a native heart valve, comprising:
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delivering a prosthesis into a patient, the prosthesis comprising; an expandable frame extending along a longitudinal axis between a proximal end and a distal end, the expandable frame comprising a first and second row of cells; a plurality of spaced-apart proximal anchors connected to the frame at the first row of cells; a plurality of spaced-apart distal anchors connected to the frame at the second row of cells; and a replacement valve seated within the frame; and expanding the frame within the native heart valve of the patient with the replacement valve seated within the frame, wherein expansion of the frame causes the proximal anchors and the distal anchors to draw closer together with body tissue positioned between the proximal anchors and the distal anchors, wherein when the frame is in an expanded configuration; each distal anchor of the plurality of distal anchors extends proximally to a proximal most portion of the distal anchor that is positioned radially outward from the frame; the proximal most portions of the distal anchors extend in a direction that is more parallel with the longitudinal axis than with a transverse axis perpendicular to the longitudinal axis; the proximal most portions of the distal anchors are spaced apart from the proximal anchors by less than two cell lengths; and at least one of the distal anchors bends radially outwardly before bending to extend longitudinally toward the plurality of spaced-apart proximal anchors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of securing a prosthesis to a native heart valve, comprising:
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delivering a prosthesis into a patient, the prosthesis comprising; an expandable frame extending along a longitudinal axis between a proximal end and a distal end, the expandable frame comprising a plurality of cells; a proximal anchoring portion connected to the frame; a plurality of spaced-apart distal anchors connected to the frame; and a replacement valve seated within the frame; and expanding the frame within the native heart valve of the patient with the replacement valve seated within the frame, wherein expansion of the frame causes the proximal anchoring portion and the distal anchors to draw closer together with body tissue positioned between the proximal anchoring portion and the distal anchors, wherein when the frame is in an expanded configuration; each distal anchor of the plurality of distal anchors extends proximally to a proximal most portion of the distal anchor that is positioned radially outward from the frame; the proximal most portions of the distal anchors extend in a direction that is more parallel with the longitudinal axis than with a transverse axis perpendicular to the longitudinal axis; the proximal most portions of the distal anchors are spaced apart from the proximal anchoring portion by less than two cell lengths; and each distal anchor of the plurality of distal anchors is connected to the frame within a cell; and with respect to such cells having distal anchors, expanding the frame causes a distal portion of such cells to extend further radially outward than a proximal portion of such cells and wherein each distal anchor extends only from the distal portion of such cells in a direction generally parallel with the longitudinal axis toward the proximal anchoring portion, and wherein each such cell comprises only one anchor. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification