Prosthetic heart valve, system, and method
First Claim
1. A prosthetic-valve delivery system comprising:
- a prosthetic valve being collapsible and expandable between a collapsed delivery configuration and a neutral configuration, the valve comprising a sewing ring configured to be secured to an implantation site, and a resilient frame configured to cause the valve to expand from the collapsed delivery configuration to the neutral configuration, wherein the prosthetic valve further comprises a plurality of cantilevered commissure posts extending substantially longitudinally of the valve and being cantilevered relative to the sewing ring in the neutral configuration, wherein, in the collapsed deployment configuration, at least a portion of one of the plurality of cantilevered commissure portions is positioned radially inward of the sewing ring, and wherein each of the plurality of commissure posts extends radially outward of the sewing ring in the neutral configuration; and
a delivery device configured to assist the delivery of the valve to the implantation site when the valve is in the collapsed delivery configuration.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed prosthetic valves can comprise a sewing ring configured to secure the valve to an implantation site. Some disclosed valves comprise a resiliently collapsible frame having a neutral configuration and a collapsed deployment configuration. Some disclosed frames can self-expand to the neutral configuration when released from the collapsed deployment configuration. Collapsing a disclosed valve can provide convenient access to the sewing ring, such as for securing the valve to the implantation site, as well as for the insertion of the valve through relatively small surgical incisions. Examples of delivery systems and methods for deploying the valves exhibit reduced patient trauma.
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Citations
22 Claims
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1. A prosthetic-valve delivery system comprising:
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a prosthetic valve being collapsible and expandable between a collapsed delivery configuration and a neutral configuration, the valve comprising a sewing ring configured to be secured to an implantation site, and a resilient frame configured to cause the valve to expand from the collapsed delivery configuration to the neutral configuration, wherein the prosthetic valve further comprises a plurality of cantilevered commissure posts extending substantially longitudinally of the valve and being cantilevered relative to the sewing ring in the neutral configuration, wherein, in the collapsed deployment configuration, at least a portion of one of the plurality of cantilevered commissure portions is positioned radially inward of the sewing ring, and wherein each of the plurality of commissure posts extends radially outward of the sewing ring in the neutral configuration; and a delivery device configured to assist the delivery of the valve to the implantation site when the valve is in the collapsed delivery configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A prosthetic-valve delivery system comprising:
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a prosthetic valve being collapsible and expandable between a collapsed delivery configuration and a neutral configuration, the valve comprising a sewing ring configured to be secured to an implantation site, and a resilient frame including convex cusp portions on an inflow end thereof intermediate convex commissure portions on an outflow end thereof, the resilient frame being made from a super elastic alloy to permit the valve to expand from the collapsed delivery configuration to the neutral configuration; and a delivery device configured to assist the delivery of the valve to the implantation site when the valve is in the collapsed delivery configuration including a valve holder on a distal end of a shaft, wherein the commissure portions of the resilient frame are also folded inwardly to a longitudinally collapsed position when the valve is positioned in the collapsed delivery configuration and held in place with legs on the valve holder wherein, when in the collapsed delivery configuration, the valve is retained in a radially collapsed configuration using a suture or wire threaded through opposing locations around the valve, pulled taught and secured to the valve holder to cause the valve to collapse radially so that the resilient frame defines an oval prism, rather than a cylinder or a circular prism, and the valve is at least partially released from the collapsed delivery configuration by severing the suture or wire. - View Dependent Claims (21, 22)
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Specification