Method of implanting a self-expandable prosthetic heart valve
First Claim
1. A method of implanting a collapsible prosthetic heart valve, comprising:
- loading a collapsed prosthetic heart valve into a distal end of a delivery tube, the prosthetic heart valve comprising a self-expanding tubular leaflet frame formed of nitinol, the prosthetic heart valve further comprising three biological leaflets, each leaflet having a free edge and an outer edge, the free edges arranged to coapt within the prosthetic heart valve to provide a one-way occlusion and each outer edge attached to the leaflet frame;
inserting the distal end of the delivery tube into a vasculature of a patient;
positioning the distal end of the delivery tube proximal to an aortic valve;
expelling the prosthetic heart valve into an annulus of the aortic valve;
allowing the prosthetic heart valve to self-expand to a first diameter and into contact with the annulus of the aortic valve, wherein the tubular leaflet frame includes three cusp positioners that spring outward into the three valve sinuses and help rotationally orient the valve during the step of allowing the prosthetic heart valve to self-expand to a first diameter; and
inflating a balloon within the prosthetic heart valve for expanding the prosthetic heart valve to a second diameter, the second diameter larger than the first diameter, thereby securely implanting the prosthetic heart valve within the annulus of the aortic valve.
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Accused Products
Abstract
A method of implanting a collapsible prosthetic heart valve is disclosed. The prosthetic heart valve includes three biological leaflets mounted within a self-expanding tubular leaflet frame formed of nitinol. The method comprises loading a collapsed prosthetic heart valve into a distal end of a delivery tube. The distal end of the delivery tube is inserted into a vasculature of a patient and positioned proximal to an aortic valve. The prosthetic heart valve is expelled into an annulus of the aortic valve and allowed to self-expand to a first diameter. A balloon is then inflated within the prosthetic heart valve for expanding the prosthetic heart valve to a second diameter, wherein the second diameter is larger than the first diameter, thereby securely implanting the prosthetic heart valve within the annulus of the aortic valve.
156 Citations
24 Claims
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1. A method of implanting a collapsible prosthetic heart valve, comprising:
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loading a collapsed prosthetic heart valve into a distal end of a delivery tube, the prosthetic heart valve comprising a self-expanding tubular leaflet frame formed of nitinol, the prosthetic heart valve further comprising three biological leaflets, each leaflet having a free edge and an outer edge, the free edges arranged to coapt within the prosthetic heart valve to provide a one-way occlusion and each outer edge attached to the leaflet frame; inserting the distal end of the delivery tube into a vasculature of a patient; positioning the distal end of the delivery tube proximal to an aortic valve; expelling the prosthetic heart valve into an annulus of the aortic valve; allowing the prosthetic heart valve to self-expand to a first diameter and into contact with the annulus of the aortic valve, wherein the tubular leaflet frame includes three cusp positioners that spring outward into the three valve sinuses and help rotationally orient the valve during the step of allowing the prosthetic heart valve to self-expand to a first diameter; and inflating a balloon within the prosthetic heart valve for expanding the prosthetic heart valve to a second diameter, the second diameter larger than the first diameter, thereby securely implanting the prosthetic heart valve within the annulus of the aortic valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 16, 17)
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10. A method of implanting a collapsible prosthetic heart valve, comprising:
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permitting a prosthetic heart valve to self-expand to a first diameter and into contact with a surrounding heart valve annulus, the self-expanding prosthetic heart valve comprising a frame displaying hysteresis in the elastic or superelastic region; and physically expanding the prosthetic heart valve to a second diameter, the second diameter larger than the first diameter, wherein the heart valve annulus is the aortic valve annulus and there are three valve sinuses adjacent thereto, and the prosthetic heart valve has a self-expanding tubular leaflet frame including three cusp positioners that spring outward into the three valve sinuses and help rotationally orient the valve during the step of permitting the prosthetic heart valve to self-expand to the first diameter. - View Dependent Claims (11, 12, 13, 14, 15)
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18. A method of implanting a collapsible prosthetic heart valve, comprising:
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the prosthetic heart valve comprising a frame displaying hysteresis in the elastic or superelastic region, wherein the frame of the prosthetic heart valve is a collapsible leaflet frame including three cusp regions on an inflow end of the prosthetic heart valve intermediate three commissure regions on an outflow end of the prosthetic heart valve, the prosthetic heart valve further including three cusp positioners on the outflow end and intermediate the three commissure regions; connecting a holder having flexible members to the commissure regions of the prosthetic heart valve; collapsing the prosthetic heart valve within a delivery tube; advancing the prosthetic heart valve within the delivery tube to an aortic valve annulus; expelling the prosthetic heart valve from the delivery tube by relative movement therebetween; permitting the prosthetic heart valve to self-expand to a first diameter and into contact with a surrounding heart valve annulus; positioning the prosthetic heart valve utilizing the flexible members of the holder such that the cusp positioners contact the two coronary and one non-coronary sinuses of the ascending aorta without blocking the coronary ostia; and physically expanding the prosthetic heart valve to a second diameter, the second diameter larger than the first diameter. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification