METHOD OF DELIVERING A PROSTHETIC HEART VALVE
First Claim
1. A method of deploying a self-expanding prosthetic valve within a stenotic native aortic valve, the prosthetic valve comprising a radially compressible and expandable metallic stent and a flexible valvular structure mounted within the stent, the method comprising:
- providing a delivery sleeve assembly comprising a selectively steerable section and a central lumen, the delivery sleeve assembly further comprising a pusher member extending through the central lumen;
crimping the prosthetic valve;
inserting the prosthetic valve into the distal end portion of the delivery sleeve assembly such that the prosthetic valve is located distal to the pusher member;
pre-dilating leaflets of the native aortic valve for increasing the flow area through the native aortic valve;
advancing the distal end portion of the delivery sleeve assembly through a femoral artery and aorta;
actuating a pull wire for selectively controlling a curvature of the selectively steerable section during further advancement around an aortic arch, the pull wire being permanently fixed to the steerable section of the delivery sleeve assembly;
positioning the prosthetic valve adjacent to the native aortic valve; and
retracting the delivery sleeve assembly relative to the pusher for ejecting the prosthetic valve from the delivery sleeve assembly and into the native aortic valve, wherein the prosthetic valve self-expands after ejection from the delivery sleeve assembly.
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Accused Products
Abstract
A method of delivering a prosthetic heart valve to a native aortic valve is disclosed. The prosthetic heart valve comprises a radially compressible and expandable metallic stent and a flexible valvular structure. A delivery system comprises a selectively steerable section and a pusher member extending through a central lumen of the steerable section. The prosthetic heart valve is compressed and inserted into a distal end portion of the delivery system. The delivery system and prosthetic heart valve are advanced through a femoral artery and around an aortic arch. A pull wire is actuated for selectively controlling a curvature of the steerable section during advancement around the aortic arch. The pusher member is advanced for ejecting the prosthetic heart valve from the delivery system into the native aortic valve, wherein the prosthetic valve self-expands after ejection.
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Citations
10 Claims
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1. A method of deploying a self-expanding prosthetic valve within a stenotic native aortic valve, the prosthetic valve comprising a radially compressible and expandable metallic stent and a flexible valvular structure mounted within the stent, the method comprising:
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providing a delivery sleeve assembly comprising a selectively steerable section and a central lumen, the delivery sleeve assembly further comprising a pusher member extending through the central lumen; crimping the prosthetic valve; inserting the prosthetic valve into the distal end portion of the delivery sleeve assembly such that the prosthetic valve is located distal to the pusher member; pre-dilating leaflets of the native aortic valve for increasing the flow area through the native aortic valve; advancing the distal end portion of the delivery sleeve assembly through a femoral artery and aorta; actuating a pull wire for selectively controlling a curvature of the selectively steerable section during further advancement around an aortic arch, the pull wire being permanently fixed to the steerable section of the delivery sleeve assembly; positioning the prosthetic valve adjacent to the native aortic valve; and retracting the delivery sleeve assembly relative to the pusher for ejecting the prosthetic valve from the delivery sleeve assembly and into the native aortic valve, wherein the prosthetic valve self-expands after ejection from the delivery sleeve assembly. - View Dependent Claims (2, 3, 4, 5)
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6. A method of deploying a self-expanding prosthetic valve in a native aortic valve without surgery, the prosthetic valve comprising a radially compressible and expandable metallic stent and a flexible valvular structure formed of pericardial tissue and sutured to the stent, the method comprising:
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providing a delivery sleeve assembly comprising a selectively steerable section and a central lumen, the delivery sleeve assembly further comprising a pusher member extending through the central lumen; crimping the prosthetic valve; inserting the prosthetic valve into the delivery sleeve assembly such that the prosthetic valve is located distal to the pusher member; advancing the prosthetic valve, pusher, tubular sleeve and steerable section through a femoral artery and an aorta; actuating a pull wire for selectively controlling a curvature of the selectively steerable section of the delivery sleeve assembly during advancement around an aortic arch; advancing the pusher and prosthetic valve relative to the delivery sleeve assembly for ejecting the prosthetic valve within the native aortic valve; and allowing the prosthetic valve to self-expand expand, wherein the stent of the prosthetic valve has a first portion configured to engage leaflets of the native aortic valve and a second portion configured to engage an inner wall of an ascending aorta and wherein the first portion has a smaller diameter than the second portion. - View Dependent Claims (7, 8, 9, 10)
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Specification