Diagonally tapered, bevelled tip introducing catheter and sheath and method for insertion

  • US 4,850,960 A
  • Filed: 07/08/1987
  • Issued: 07/25/1989
  • Est. Priority Date: 07/08/1987
  • Status: Expired due to Term
First Claim
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1. An introducing catheter of a size for use in the vascular system for assisting in the insertion of other devices through the wall of blood vessels, said introducing catheter comprising:

  • a flexibIe tubular body portion having a bore therethrough and a distal end and a proximal end, said bore constructed to coact with a guide element extending within the bore;

    a tapered portion extending from said distal end of said tubular body portion, said tapered portion having a diameter which gradually reduces along the length of the tapered portion forming a conical exterior shape;

    a tubular portion extending from the reduced diameter end of said tapered portion;

    a bevelled tip portion at the end of said tubular portion, said bevelled tip being formed at an acute angle with respect to the longitudinal axis of said tubular portion to facilitate entry into an existing puncture passage in the wall of a blood vessel; and

    said tapered portion operating to dilate the existing puncture passage in the wall of a blood vessel.

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