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Metal wire stent

  • US 5,395,390 A
  • Filed: 12/16/1993
  • Issued: 03/07/1995
  • Est. Priority Date: 05/01/1992
  • Status: Expired due to Fees
First Claim
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1. A stent comprising a wire skeletal frame, said frame being adapted, when exposed to a body temperature, to assume a first condition in which said frame is expanded, relatively rigid, and substantially tubular in configuration, and being further adapted, when exposed to a temperature lower than said body temperature, to assume a second condition in which said frame is flexible and collapsible, said wire frame comprised of a compound of nickel and titanium, said compound in said second condition indefinitely retaining said flexibility and retaining memory of said first condition, walls of said frame in said second condition being adapted to be positioned proximate each other to form a stent diameter approximating the combined thickness of the frame walls, and further adapted to be configured between said first condition and said second condition, said skeletal frame comprising only a single wire formed into polygonal cells having as sides thereof straight axially-extending portions of said wire joined together along the lengths of said polygonal cell sides.

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