Artificial valve prostheses with a free leaflet portion
First Claim
Patent Images
1. An implantable valve prosthesis comprising:
- a frame having a proximal frame end and a distal frame end, the frame defining a lumen extending between the proximal frame end and the distal frame end along a longitudinal axis, anda first valve leaflet positioned within the lumen and having a distal edge attached to the frame and a proximal edge free of the frame, wherein the first valve leaflet comprises at least one material having a first and a second slit through the leaflet, each slit of the first and second slits comprising an opening in the first valve leaflet and extending distally along the leaflet from the proximal edge to a slit end position proximal of the distal edge, the first and second slits cooperatively defining a free portion of the first valve leaflet between the first and second slits and bounded by the proximal edge, the first and second slits, and an interface joining the distal slit end points,wherein the first valve leaflet is movable between a first position that allows fluid flow in a first, antegrade, direction and a second position that restricts flow in a second, retrograde direction.
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Abstract
An implantable valve prosthesis including a frame defining a lumen extending between a proximal frame end and a distal frame end and a leaflet positioned within the lumen and having a distal edge attached to the frame and a proximal edge free of the frame. The leaflet includes a first and a second slit extending distally from the proximal edge and defining a free portion of the leaflet between the first and second slits. The leaflet is movable between a position that allows fluid flow in an antegrade direction and a second position that restricts flow in a retrograde direction.
54 Citations
20 Claims
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1. An implantable valve prosthesis comprising:
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a frame having a proximal frame end and a distal frame end, the frame defining a lumen extending between the proximal frame end and the distal frame end along a longitudinal axis, and a first valve leaflet positioned within the lumen and having a distal edge attached to the frame and a proximal edge free of the frame, wherein the first valve leaflet comprises at least one material having a first and a second slit through the leaflet, each slit of the first and second slits comprising an opening in the first valve leaflet and extending distally along the leaflet from the proximal edge to a slit end position proximal of the distal edge, the first and second slits cooperatively defining a free portion of the first valve leaflet between the first and second slits and bounded by the proximal edge, the first and second slits, and an interface joining the distal slit end points, wherein the first valve leaflet is movable between a first position that allows fluid flow in a first, antegrade, direction and a second position that restricts flow in a second, retrograde direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of manufacturing an implantable valve prosthesis, the method comprising:
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attaching a frame, defining a lumen extending between a proximal frame end and a distal frame end, to a first valve leaflet, wherein the first valve leaflet is positioned within the lumen and has a distal edge attached to the frame and a proximal edge free of the frame, wherein the first valve leaflet comprises a first and a second slit through the leaflet, each slit of the first and second slits comprising an opening in the first valve leaflet and extending distally along the leaflet from the proximal edge to a slit end position proximal of the distal edge, the first and second slits cooperatively defining a free portion of the first valve leaflet between the first and second slits and bounded by the proximal edge, the first and second slits, and an interface joining the distal slit end points, and wherein the first valve leaflet is movable between a first position that allows fluid flow in a first, antegrade, direction and a second position that restricts flow in a second, retrograde direction.
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20. A method of regulating flow within a vessel, the method comprising:
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delivering an implantable valve prosthesis within a lumen of a catheter to a position within the vessel; and deploying an implantable valve prosthesis from the lumen, wherein the implantable valve prosthesis comprises an expandable frame defining a lumen extending between a proximal frame end and a distal frame end, and a first valve leaflet positioned within the lumen and having a distal edge attached to the expandable frame and a proximal edge free of the expandable frame, wherein the first valve leaflet comprises at least one material having a first and a second slit through the leaflet, each slit of the first and second slits comprising an opening in the first valve leaflet and extending distally along the leaflet from the proximal edge to a slit end position proximal of the distal edge, the first and second slits cooperatively defining a free portion of the first valve leaflet between the first and second slits and bounded by the proximal edge, the first and second slits, and an interface joining the distal slit end points, and wherein the first valve leaflet is movable between a first position that allows fluid flow in a first, antegrade, direction and a second position that restricts flow in a second, retrograde direction.
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Specification