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Rotating guidewire extension system

  • US 5,117,838 A
  • Filed: 11/21/1990
  • Issued: 06/02/1992
  • Est. Priority Date: 04/18/1990
  • Status: Expired due to Term
First Claim
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1. A guidewire extension system comprising:

  • an extension guidewire adapted to be releasably but firmly connected to a proximal end of an initial or primary guidewire, said extension guidewire having a distal end and a proximal end, and a connecting assembly which is mounted at the distal end of said extension guidewire, which includes a coiled spring constructed and arranged to receive and grippingly engage and lock against a proximal end of the initial or primary guidewire, and which includes a small diameter tube having a proximal end and a distal end, said coiled spring being received in said tube, said distal end of said extension guidewire being received in said proximal end of said tube, and a rotatable connection between said distal end of said guidewire and said proximal end of said tube providing rotatable journaling of said extension guidewire to said tube for minimizing, if not eliminating, twisting of the extension guidewire when disconnecting the extension guidewire from the initial guidewire.

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