CATHETER DELIVERABLE ARTIFICIAL MULTI-LEAFLET HEART VALVE PROSTHESIS AND INTRAVASCULAR DELIVERY SYSTEM FOR A CATHETER DELIVERABLE HEART VALVE PROSTHESIS
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Accused Products
Abstract
A heart valve prosthesis includes a collapsible stent and a one-piece multi-leaflet valve. The stent includes at least one length of wire having a series of turns forming a spring-like stent. The one-piece multi-leaflet valve is attached to the stent and includes a cylinder of polyester material secured thereto at three points. The stent is collapsible in a radial direction between a contracted state and an expanded state. The contracted state has a radial dimension smaller than a radial dimension of the expanded state. The stent is spring biased toward the expanded state such that it occupies an active state when implanted into a heart. The active state has a radial dimension that is between the radial dimension of the contracted state and the radial dimension of the expanded state such that a radial load generated by the bias of the collapsible stent is sufficient to retain the heart valve prosthesis in the heart.
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Citations
17 Claims
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1-10. -10. (canceled)
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11. A system for intravascular delivery of a heart valve prosthesis, the system comprising:
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a handle; a flexible elongated sheath extending from the handle; a cavity defined by an end of the elongated sheath that is disposed opposite the handle, the cavity adapted to contain a heart valve prosthesis during intravascular delivery of the heart valve prosthesis; a tapered tip coupled to the end of the elongated sheath adjacent to the cavity, the tapered tip adapted to guide the elongated sheath during intravascular delivery of the heart valve prosthesis, the tapered tip and the elongated sheath being separable such that the heart valve prosthesis can be released from the cavity in the elongated sheath upon proper positioning of the heart valve prosthesis. - View Dependent Claims (12, 13, 14, 15)
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16. (canceled)
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17. (canceled)
Specification