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Balloon dilatation catheter with advanceable non-removable guide wire

  • US 4,616,653 A
  • Filed: 07/30/1985
  • Issued: 10/14/1986
  • Est. Priority Date: 07/30/1985
  • Status: Expired due to Term
First Claim
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1. In a balloon dilatation catheter with an advanceable non-removable guide wire, a flexible tubular member having first and second lumens extending therethrough, an inflatable balloon carried by the distal extremity of the tubular member so that the first lumen extends through the balloon and is out of communication with the interior of the balloon and in which the second lumen is in communication with the interior of the balloon and a guide wire slidably mounted in the first lumen, a coil-like tip secured to the distal portion of the guide wire and having a cross-sectional area which is greater than that of the cross-sectional area of the first lumen and preventing removal of the guide wire through the first lumen, said guide wire being capable of being advanced longitudinally of the first lumen so that the coil-like tip of the guide wire can be advanced ahead of the balloon to facilitate the positioning of the balloon.

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