Patent ID: 11950828
Assignee: AVENU MEDICAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method of creating an AV fistula between adjacent first and second vessels, comprising:
inserting a guidewire from the first vessel into the second vessel;
inserting a catheter comprising a proximal member and a distal member over the guidewire such that a distal tip of the distal member comes into contact with a selected anastomosis site;
advancing the distal member into the second vessel until a distal face of the proximal member contacts a tissue wall of the first vessel so that the proximal member remains in the first vessel thereby enlarging an aperture between the two vessels;
moving the distal member and the proximal member together to clamp tissue surrounding the aperture between the distal face of the proximal member and a proximal face on the distal member;
applying energy to an active heating member on the proximal member to cut and form the aperture, and to weld the edges thereof in order to create a desired fistula between the two vessels; and
using a passive heating member disposed on the distal member to create a heating gradient across a tissue contacting surface of the distal member.