Methods and apparatus for percutaneous aortic valve replacement
First Claim
1. A method for percutaneous aortic valve replacement, said method comprising:
- advancing a central catheter through the ascending aorta toward the aortic valve to position a temporary aortic valve in the ascending aorta;
deploying the temporary aortic valve against the wall of the ascending aorta;
advancing a stent catheter over a guidewire positioned within and through the central catheter to place an ablation stent within the aortic valve;
deploying the ablation stent within the native aortic valve;
withdrawing the stent catheter; and
advancing a deployment catheter over the guidewire positioned within and through the central catheter to place a replacement valve in the ablation stent while the temporary aortic valve and the ablation stent remain in place.
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Accused Products
Abstract
A delivery system and method for percutaneous aortic valve (PAV) replacement and apparatus used therein. A temporary aortic valve including a reversibly expandable occluding means surrounds a central catheter mechanism. The temporary valve is positioned within the ascending aorta, just above and downstream from the coronary ostia. The occluding means is configured such that, when fully expanded against the aortic wall, gaps are left that promote continuous coronary perfusion during the cardiac cycle. The temporary valve substitutes for the function of the native aortic valve during its replacement. The native aortic valve is next dilated, and then ablated through deployment of low profile, elongated, sequentially delivered stents. The stent(s) displace the native tissues and remain within the aortic annulus to receive and provide a structure for retaining the PAV. The PAV is delivered, positioned and deployed within the stent(s) at the aortic annulus with precision and relative ease.
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Citations
18 Claims
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1. A method for percutaneous aortic valve replacement, said method comprising:
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advancing a central catheter through the ascending aorta toward the aortic valve to position a temporary aortic valve in the ascending aorta; deploying the temporary aortic valve against the wall of the ascending aorta; advancing a stent catheter over a guidewire positioned within and through the central catheter to place an ablation stent within the aortic valve; deploying the ablation stent within the native aortic valve; withdrawing the stent catheter; and advancing a deployment catheter over the guidewire positioned within and through the central catheter to place a replacement valve in the ablation stent while the temporary aortic valve and the ablation stent remain in place. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification