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Percutaneously placed prosthesis with thromboresistant valve portion

  • US 20050182483A1
  • Filed: 02/11/2005
  • Published: 08/18/2005
  • Est. Priority Date: 02/11/2004
  • Status: Abandoned Application
First Claim
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1. A valve prosthesis for implantation in blood vessel, comprising:

  • a support structure having a first configuration and a first diameter for delivery through a blood vessel and a second configuration and second diameter for implantation therein, the support structure including a passageway extending therethrough;

    the support structure further comprising a valve portion having a first and second end and that includes a valve support housing and one or more valve-closing elements attached thereto and configured to permit blood flowing through the passageway in a first direction and restricting blood flow in a second direction opposite the first direction; and

    an anchoring portion, the support structure further comprising an anchoring portion attached about the valve portion;

    wherein the support structure is configured such that the valve portion is substantially non-self expanding when no longer constrained by the delivery system, while the anchoring portion expands to the second diameter valve portion to engage the walls of the blood vessel and anchors the prosthesis therein.

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