Methods for deploying self-expanding heart valves
First Claim
1. A method for delivering and implanting a prosthetic heart valve in a native aortic valve in a patient, comprising:
- collapsing a prosthetic heart valve to a contracted configuration while the prosthetic heart valve is coupled to a mechanical deployment mechanism, the prosthetic heart valve comprising a self-expandable stent body and a plurality of leaflet-forming membranes made from bovine pericardium, the stent body having a proximal end and a distal end;
advancing a catheter shaft over a guidewire and through a femoral artery while a patient'"'"'s heart is beating, the catheter shaft having the deployment mechanism and prosthetic heart valve disposed along a distal end portion thereof, the catheter shaft having a proximal operating handle disposed along a proximal end portion thereof;
advancing the catheter shaft through an ascending aorta and toward a native aortic valve position while visualizing at least one radiopaque marker on the stent body;
permitting the prosthetic heart valve to self-expand to an initial expanded configuration;
actuating the deployment mechanism via the proximal operating handle for regulating a rate of expansion of the prosthetic heart valve from the initial expanded configuration to a final expanded configuration, wherein the proximal and distal ends of the stent body are expanded at equal rates, thereby allowing the stent body to maintain a generally tubular shape during expansion;
locking the prosthetic heart valve in the final expanded configuration via a mechanical locking device disposed on the prosthetic heart valve; and
detaching the deployment mechanism from the prosthetic heart valve and withdrawing the catheter shaft and deployment mechanism from a patient'"'"'s vasculature.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for delivering and implanting a prosthetic heart valve in a native aortic valve is provided. The method comprises advancing the prosthetic heart valve through a patient'"'"'s vasculature while the prosthetic heart valve is coupled to a mechanical deployment mechanism along a distal end portion of a catheter shaft. The prosthetic heart valve is permitted to self-expand from a contracted configuration to an initial expanded configuration. The mechanical deployment mechanism is then actuated via an operating handle to further expand the prosthetic heart valve to a fully expanded configuration while equilibrating the rate of the expansion of the proximal and distal ends of the prosthetic heart valve. The prosthetic heart valve is locked in the fully expanded configuration via a mechanical locking device disposed on the prosthetic heart valve.
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Citations
26 Claims
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1. A method for delivering and implanting a prosthetic heart valve in a native aortic valve in a patient, comprising:
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collapsing a prosthetic heart valve to a contracted configuration while the prosthetic heart valve is coupled to a mechanical deployment mechanism, the prosthetic heart valve comprising a self-expandable stent body and a plurality of leaflet-forming membranes made from bovine pericardium, the stent body having a proximal end and a distal end; advancing a catheter shaft over a guidewire and through a femoral artery while a patient'"'"'s heart is beating, the catheter shaft having the deployment mechanism and prosthetic heart valve disposed along a distal end portion thereof, the catheter shaft having a proximal operating handle disposed along a proximal end portion thereof; advancing the catheter shaft through an ascending aorta and toward a native aortic valve position while visualizing at least one radiopaque marker on the stent body; permitting the prosthetic heart valve to self-expand to an initial expanded configuration; actuating the deployment mechanism via the proximal operating handle for regulating a rate of expansion of the prosthetic heart valve from the initial expanded configuration to a final expanded configuration, wherein the proximal and distal ends of the stent body are expanded at equal rates, thereby allowing the stent body to maintain a generally tubular shape during expansion; locking the prosthetic heart valve in the final expanded configuration via a mechanical locking device disposed on the prosthetic heart valve; and detaching the deployment mechanism from the prosthetic heart valve and withdrawing the catheter shaft and deployment mechanism from a patient'"'"'s vasculature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for delivering and implanting a prosthetic heart valve in a native aortic valve in a patient, comprising:
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providing a prosthetic heart valve comprising a self-expandable stent body and a plurality of leaflet-forming membranes made from bovine pericardium, the prosthetic heart valve stored with a preservative solution in a storage container while connected to a deployment mechanism; removing the prosthetic heart valve from the storage container; compressing the prosthetic heart valve to a contracted configuration; percutaneously advancing a catheter shaft over a guidewire and through a femoral artery while a patient'"'"'s heart is beating and without cardiopulmonary bypass, the catheter shaft having the prosthetic heart valve and deployment mechanism disposed along a distal end portion thereof, the catheter shaft having a proximal operating handle disposed along a proximal end portion thereof; while visualizing at least one radiopaque marker on the stent body, advancing the catheter shaft through an ascending aorta until the prosthetic heart valve is positioned in a native aortic valve; permitting the prosthetic heart valve to self-expand from the contracted configuration to an initial expanded configuration; actuating the deployment mechanism via the proximal operating handle for regulating the rate of expansion of the prosthetic heart valve from the initial expanded configuration to a final expanded configuration while equilibrating expansion along proximal and distal ends of the stent body; locking the prosthetic heart valve in the final expanded configuration using a mechanical locking device disposed on the prosthetic heart valve; and releasing the prosthetic heart valve from the deployment mechanism and withdrawing the catheter shaft and deployment mechanism from a patient'"'"'s vasculature. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification