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Snap-in connection assembly for extension guidewire system

  • US 5,813,405 A
  • Filed: 03/03/1997
  • Issued: 09/29/1998
  • Est. Priority Date: 04/18/1990
  • Status: Expired due to Term
First Claim
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1. An extension guidewire system comprising an initially inserted guidewire having a proximal end and a proximal end portion, an extension guidewire adapted to be connected axially to said proximal end portion of said initially inserted guidewire, and a connector assembly not including a retractable spring biased sleeve;

  • said extension guidewire having a distal end, a distal end portion and a proximal end; and

    said connector assembly consisting essentially of;

    a snap-in sleeve or tube which is made from a medically suitable metal tubing and which is mounted at one of the distal end of said extension guidewire and the proximal end of said initially inserted guidewire;

    an engageable means on one of said proximal end portion of said initially inserted guidewire and said distal end portion of said extension guidewire for axially engaging and elastically deforming said snap-in sleeve when at least one of said engageable means and said snap-in sleeve is moved relative to the other in an axial direction only; and

    a radially inwardly extending detent in said snap-in tube which is positioned to engage against and lock with said engageable means on the other of said proximal end portion of the initially inserted guidewire and said distal end portion of said extension guidewire upon relative axial movement of said proximal end portion of the initially inserted guidewire and of said distal end of said extension guidewire and said snap-in tube toward, and into engagement with, each other followed by substantial elastic recovery of said snap-in sleeve when said detent moves into engagement with said engagable means, and said snap-in sleeve and said engageable means being disengagable upon axially pulling them apart.

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