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Catheter with balloon

  • US 20020193820A1
  • Filed: 06/24/2002
  • Published: 12/19/2002
  • Est. Priority Date: 12/24/1999
  • Status: Active Grant
First Claim
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1. A catheter with a balloon, comprising a double tube consisting of an inner tube and an outer tube disposed concentrically and a balloon fastened at one end to the inner tube and at the other end to the outer tube, and further satisfying the following requirement (A) or (B):

  • (A) Without any air-extracting tube provided between the outer tube and the inner tube, the outer diameter of the outer tube is 4 mm or less, and the average bending moment of the outer tube at 40 cm or less from the tip of the tube at a bending angle of 45 degrees is in a range of 70 to 250 g·

    cm. (B) The inner diameter d3 of a balloon-extending pipe stopper provided at the tip of the inner tube is in such a range that the inner diameter d3 is not substantially different in level from the inner diameter d4 of a balloon-extending pipe that is inserted into the inner tube and brought into contact with the balloon-extending pipe stopper for axial extension and radial contraction of the balloon.

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