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Extendable guidewire assembly

  • US 5,188,621 A
  • Filed: 08/26/1991
  • Issued: 02/23/1993
  • Est. Priority Date: 08/26/1991
  • Status: Expired due to Fees
First Claim
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1. An extendable guidewire assembly for use within a patient'"'"'s vasculature comprising in combination:

  • (a) a guidewire having a distal end that is adapted to be fed into said vasculature and a tapered proximal end;

    (b) an extension wire having a proximal end and a tapered distal end; and

    (c) a polymeric sleeve having first and second ends and a lumen extending therebetween, said first end being fixedly attached concentrically about one of either the proximal end of the guidewire or the distal end of the extension wire, such that said one end extends partly through the lumen of the sleeve, said second end being adapted to receive the other of the proximal end of the guidewire or the distal end of the extension wire, said lumen having a diameter that is smaller than the diameter of the wire to which the sleeve is not fixedly attached and wherein said lumen expands radially when the sleeve is under axial compression and contracts radially when the sleeve is under axial tension.

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