Delivery systems and methods of implantation for replacement prosthetic heart valves
First Claim
1. A method of delivering a replacement prosthetic valve to a previously implanted prosthetic valve, the method comprising:
- compressing a replacement prosthetic valve comprising an expandable stent within a first sheath of a delivery system, wherein the delivery system comprises a proximal end and a distal end;
advancing the delivery system and compressed replacement prosthetic valve into a vessel of a patient until the distal end of the delivery system is positioned adjacent to a second side of a previously implanted prosthetic valve;
partially retracting the first sheath of the delivery system toward the proximal end of the delivery system until a first distal portion of the expandable stent extends from a first end of the first sheath, wherein the extending first distal portion of the expandable stent extends radially relative to the first sheath;
further advancing the delivery system toward the previously implanted prosthetic valve and engaging the extending first distal portion of the expandable stent with the second side of the previously implanted prosthetic valve; and
retracting a second sheath of the delivery system toward the proximal end of the delivery system to expose the compressed stent and deploy the replacement prosthetic valve, wherein a second distal portion of the expandable stent radially extends to engage with a first side of the previously implanted prosthetic valve.
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Accused Products
Abstract
A method of delivering a replacement prosthetic valve to a previously implanted prosthetic valve including the steps of compressing a replacement prosthetic valve having an expandable stent within a sheath of a delivery system, wherein the delivery system comprises a proximal end, a distal end, and a centering structure positioned between the proximal and distal ends, advancing the delivery system and compressed replacement prosthetic valve into a vessel of a patient until the distal end of the delivery system is positioned adjacent to a second side of a previously implanted prosthetic valve, deploying the centering structure to radially reposition the distal end of the delivery system, further advancing the delivery system toward the previously implanted prosthetic valve, and deploying the replacement prosthetic valve.
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Citations
8 Claims
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1. A method of delivering a replacement prosthetic valve to a previously implanted prosthetic valve, the method comprising:
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compressing a replacement prosthetic valve comprising an expandable stent within a first sheath of a delivery system, wherein the delivery system comprises a proximal end and a distal end; advancing the delivery system and compressed replacement prosthetic valve into a vessel of a patient until the distal end of the delivery system is positioned adjacent to a second side of a previously implanted prosthetic valve; partially retracting the first sheath of the delivery system toward the proximal end of the delivery system until a first distal portion of the expandable stent extends from a first end of the first sheath, wherein the extending first distal portion of the expandable stent extends radially relative to the first sheath; further advancing the delivery system toward the previously implanted prosthetic valve and engaging the extending first distal portion of the expandable stent with the second side of the previously implanted prosthetic valve; and retracting a second sheath of the delivery system toward the proximal end of the delivery system to expose the compressed stent and deploy the replacement prosthetic valve, wherein a second distal portion of the expandable stent radially extends to engage with a first side of the previously implanted prosthetic valve. - View Dependent Claims (2, 3, 4)
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5. A method of delivering a replacement prosthetic valve to a previously implanted prosthetic valve, the method comprising:
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compressing a replacement prosthetic valve comprising an expandable stent within a sheath of a delivery system, wherein the delivery system comprises a proximal end, a distal end, and a centering structure positioned between the proximal and distal ends, and wherein the replacement prosthetic valve is positioned distal to the centering structure; advancing the delivery system and compressed replacement prosthetic valve into a vessel of a patient until the distal end of the delivery system is positioned adjacent to a second side of a previously implanted prosthetic valve; deploying the centering structure to contact a wall of the vessel at a location away from the previously implanted prosthetic valve and radially reposition the distal end of the delivery system; further advancing the delivery system toward the previously implanted prosthetic valve after deploying the centering structure; and deploying the replacement prosthetic valve. - View Dependent Claims (6, 7, 8)
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Specification