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Dilatation catheter

DC
  • US 4,762,129 A
  • Filed: 07/14/1986
  • Issued: 08/09/1988
  • Est. Priority Date: 11/23/1984
  • Status: Expired due to Term
First Claim
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1. A dilatation catheter comprising an expandable balloon having distal and proximal ends, a first, relatively long, elongated hollow tube having distal and proximal ends and opening adjacent its distal end into the interior of the expandable balloon, the first tube being sealingly connected to the proximal end of the balloon, and a second, relatively short, elongated hollow tube integral with said first tube, having distal and proximal ends and a lumen extending between said ends of uniform cross section along its length and free of obstructions adapted to receive a guide wire in a sliding fit, the second tube traversing the interior of the expandable balloon from the distal end to the proximal end of the balloon and being sealingly connected to the distal end of the balloon, and the second tube terminating at its proximal end substantially distally of the proximal end of the first tube in an aperture open to the exterior of the catheter,said first tube having sufficient stiffness that the second tube and expandable balloon can readily be advanced or withdrawn together in use along the guide wire by exerting a pushing or pulling force upon the first tube, in combination with an elongated guide wire.

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