Methods and apparatus for percutaneous aortic valve replacement
First Claim
1. A method for replacing a heart valve, having an annulus, with a low-profile prosthetic valve, the method comprising:
- deploying a temporary valve (TV) in a vessel in proximity to the annulus to partially occlude the vessel, the TV comprising a central catheter mechanism and an expandable occluding element surrounding a distal end of the central catheter mechanism;
deploying a plurality of low-profile stents within the valve annulus to prepare the annulus for implantation of the low-profile prosthetic valve, wherein the plurality of low-profile stents are advanced through the central catheter mechanism prior to deployment; and
deploying the low-profile prosthetic valve inside the plurality of low-profile stents, wherein the low-profile prosthetic valve is advanced through the central catheter mechanism prior to deployment.
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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 medium surrounds a central catheter mechanism. The temporary valve is positioned within the ascending aorta, just above and downstream from the coronary ostia. The occluding medium 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.
80 Citations
23 Claims
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1. A method for replacing a heart valve, having an annulus, with a low-profile prosthetic valve, the method comprising:
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deploying a temporary valve (TV) in a vessel in proximity to the annulus to partially occlude the vessel, the TV comprising a central catheter mechanism and an expandable occluding element surrounding a distal end of the central catheter mechanism; deploying a plurality of low-profile stents within the valve annulus to prepare the annulus for implantation of the low-profile prosthetic valve, wherein the plurality of low-profile stents are advanced through the central catheter mechanism prior to deployment; and deploying the low-profile prosthetic valve inside the plurality of low-profile stents, wherein the low-profile prosthetic valve is advanced through the central catheter mechanism prior to deployment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification