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Guide wire for catheters and method for its use

  • US 5,465,733 A
  • Filed: 10/14/1993
  • Issued: 11/14/1995
  • Est. Priority Date: 10/14/1993
  • Status: Expired due to Fees
First Claim
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1. In combination:

  • a catheter, said catheter having a proximal end and a distal end, said catheter having an internal lumen communicating with at least said distal end of said catheter, said internal lumen having an internal diameter, said distal end of said catheter having an external diameter, said internal lumen of said catheter extending substantially the full length of said catheter,a guide wire, said guide wire comprising an elongate guide wire body having a proximal end and a distal end, and a tapered transition device attached to said guide wire body intermediate said proximal and distal ends of said guide wire body, said guide wire body having a proximal external diameter proximal to said tapered transition device which is less than said internal diameter of said internal lumen, said guide wire body having a distal external diameter distal to said tapered transition device and said tapered transition device having a diameter which is greater than said distal external diameter of said guide wire body, said tapered transition device having a distal edge which is tapered to provide a smooth transition between said diameter of said tapered transition device and said distal external diameter of said guide wire body,and a maneuvering handle having a gripping means for gripping said guide wire body and a bearing means for rotatably bearing against said proximal end of said catheter and a spring means for exerting a force between said bearing means and said gripping means.

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