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Steerable memory alloy guide wires

  • US 5,143,085 A
  • Filed: 10/01/1990
  • Issued: 09/01/1992
  • Est. Priority Date: 05/13/1987
  • Status: Expired due to Fees
First Claim
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1. A steerable guide wire for insertion in a body vessel for use in guiding an associated catheter to a desired location within the vessel, the guide wire comprising an elongated coiled spring defining a lumen therein, wherein said coiled spring may assume a first directional shape;

  • said coiled spring fitted with a shape memory alloy component within said lumen annealed to a given second directional shape different than said first directional shape such that, upon the application of heat, said shape memory alloy component overcomes said first directional shape of said coiled spring to cause the guide wire to assume said second directional shape.

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