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Device for regulating the flow of blood through the blood system

  • US 6,287,334 B1
  • Filed: 12/17/1997
  • Issued: 09/11/2001
  • Est. Priority Date: 12/18/1996
  • Status: Expired due to Term
First Claim
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1. An implantable venous valve prosthesis device for regulating the flow of blood in a blood vessel of a patient, the device comprising:

  • a support frame which is configured to be positioned within a vein, wherein the support frame is configured to press outward against inner walls of the vein to hold the prosthesis device in place following implantation; and

    at least one collapsible flow restriction pocket attached to the support frame, the flow restriction pocket comprising an inner wall and an outer wall, the inner wall being displaceable by the flow of blood through the vein such that the collapsible flow restriction pocket assumes a collapsed configuration wherein the inner wall is forced against the outer wall when blood flows through the vein in a forward direction, and assumes an open configuration wherein the inner wall is forced away from the outer wall when blood flows through the vein in a reverse direction;

    wherein the flow restriction pocket impedes the flow of blood in the reverse direction when the flow restriction pocket is in the open configuration.

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