IP Library › Patent Application 11652559
Patent Application
App. No. 11/652,559

Braided stent

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Quick Facts
Patent No.
US None
App. No.
11/652,559
Abstract

A radially self-expanding stent for implantation in a body passage comprises first and second sets of mutually counter-rotating metallic filaments which are braided together and define a tubular stent body having two ends which is mechanically biassed towards a first radially expanded configuration in which it is unconstrained by externally applied forces and can be retained in a second radially compressed configuration, and in which some or all of the filaments ends at the ends of the body are fixed together in pairs each consisting of counter-rotating filaments by placing the filaments over one another and placing them adjacent to and substantially parallel to one another and further comprising a join at each end fixing to retain the ends of the filaments in contact with one another.

Claims (5)

1 . A radially self-expanding stent for implantation in a body passage comprises first and second sets of mutually counter-rotating metallic filaments which are braided together and define a tubular stent body having two ends which is mechanically biassed towards a first radially expanded configuration in which it is unconstrained by externally applied forces and can be retained in a second radially compressed configuration, and in which some or all of the filament ends at the ends of the body are fixed together in pairs each consisting of counter-rotating filaments by placing the filaments over one another and placing them adjacent to and substantially parallel to one another and further comprising a join at each end fixing to retain the ends of the filaments in contact with one another, wherein some but not all of the filament ends are welded.

2 . A stent according to claim 1 , wherein the join generally has a diameter of at least 1.2 times that of the diameter of the filament.

3 . A stent according to claim 1 , wherein the diameter of the join is no more than 3 times the diameter of the filament.

4 . A stent according to claim 1 , wherein at least some of the joins provide a shoulder in a rearward axial direction.

5 . A stent according to claim 1 , wherein the diameter of the join is less than 2.5 times the diameter of the filament.