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Liquid filled low profile dilatation catheter

  • US 4,793,350 A
  • Filed: 01/06/1987
  • Issued: 12/27/1988
  • Est. Priority Date: 01/06/1987
  • Status: Expired
First Claim
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1. A low profile dilatation catheter comprising an elongate flexible tubular member having proximal and distal extremities and having a flow passage extending therethrough, an inflatable balloon having proximal and distal extremities with the proximal extremity of the balloon connected to the distal extremity of the elongate flexible tubular member so that the interior of the balloon is in fluid communication with the flow passage in the tubular member, a flexible tip secured to the distal extremity of the balloon, a core wire having a tapered distal extremity and extending through the balloon and into the flexible tip, means securing the distal extremity of the core wire to the flexible tip, means for rotating the proximal extremity of the core wire for causing rotation of the flexible tip, a passageway between the core wire and the inner diameter of the flexible tip for venting gas from the balloon to ambient without passage of inflation liquid therethrough, and an adapter carried by the proximal extremity of the elongate tubular member which is adapted to supply a liquid to the flow passage for inflating and deflating the inflatable balloon.

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