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Guidewire assembly having moveable core and low profile safety wire

  • US 4,779,628 A
  • Filed: 06/12/1987
  • Issued: 10/25/1988
  • Est. Priority Date: 06/12/1987
  • Status: Expired due to Fees
First Claim
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1. A moveable core catheter guidewire assembly to be guided through the vascular system of the body comprising:

  • an elongated wound wire cylindrical casing having a distal closed end and a proximal open end;

    an elongated resilient core wire positioned in said cylindrical casing, having a distal end positioned at the distal end of said casing, and having a proximal end extending outside said proximal open end of said casing;

    an elongated resilient safety wire having the substantially same length as said cylindrical casing, one end of the safety wire being attached to the distal closed end of the cylindrical casing and the other end of the safety wire being attached to the proximal open end of the cylindrical casing;

    said safety wire having the cross section of a segment of a circle along its entire length, with the curved surface thereof conforming to the inside surface of said cylindrical casing, and said curved surface being mounted in contact with said inside surface of said cylindrical casing, thereby providing greater space within said cylindrical casing for said core wire to provide greater flexibility of said guidewire assembly.

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