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Step-down catheter

  • US 5,902,282 A
  • Filed: 12/26/1996
  • Issued: 05/11/1999
  • Est. Priority Date: 12/26/1996
  • Status: Expired due to Term
First Claim
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1. A catheter for use in a catheter assembly including a catheter introducer having an opening and adapted to insert a portion of a catheter into the vascular system of a patient'"'"'s body through the opening, the catheter comprising:

  • a substantially tubular body a portion of which is adapted to be placed into a portion of the vascular system of a patient'"'"'s body, said tubular body having an outside diameter no less than the inside diameter of the opening in a catheter introducer, and an opening of generally uniform inside diameter extending through said tubular body; and

    a transition member coupled to a first end of said tubular body, said transition member having an opening of generally uniform diameter extending through said transition member and axially aligned with the opening in said tubular body and a first configuration including an outside diameter that is less than the outside diameter of said tubular body and less than said inside diameter of the opening in said the catheter introducer anda second configuration including a diameter of the opening substantially equivalent to the diameter of the opening of said tubular body.

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