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Methods for fluid flow through body passages

  • US 9,782,201 B2
  • Filed: 05/02/2016
  • Issued: 10/10/2017
  • Est. Priority Date: 04/20/2006
  • Status: Active Grant
First Claim
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1. A method of forming a channel between a first vessel and a second vessel, the method comprising:

  • forming a passage between the first vessel and the second vessel, wherein the first vessel is an artery and the second vessel is a vein;

    deploying a device in the first vessel, the second vessel, and the passage, the device comprising;

    a longitudinal axis;

    a first end portion having a first radial stiffness, the first end portion having a first length along the longitudinal axis;

    a second end portion having a second radial stiffness, the second end portion having a second length along the longitudinal axis; and

    an intermediate portion between the first end portion and the second end portion, the intermediate portion having a third radial stiffness less than the first radial stiffness and the second radial stiffness, the intermediate portion having a third length along the longitudinal axis;

    wherein deploying the device in the first vessel, the second vessel, and the passage comprises;

    expanding the first end portion against sidewalls of the first vessel;

    expanding the second end portion against sidewalls of the second vessel; and

    expanding the intermediate portion in the passage, wherein expanding the intermediate portion comprises the dilating the passage.

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