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Grooved balloon for dilatation catheter

  • US 5,409,458 A
  • Filed: 11/10/1993
  • Issued: 04/25/1995
  • Est. Priority Date: 11/10/1993
  • Status: Expired due to Fees
First Claim
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1. A dilatation catheter, comprising:

  • an elongate catheter body;

    a balloon having a proximal section with a proximal end and a distal end, a central inflatable section with a proximal end and a distal end, and a distal section with a proximal end and a distal end, the distal end of the proximal section being affixed to the proximal end of the central inflatable section and the proximal end of the distal section being affixed to the distal end of the central inflatable section,the balloon being disposed on the distal portion of said catheter body and inflatable through a lumen in said catheter body, said balloon having an outer surface and an elongate groove formed on one side, of said outer surface the groove having a proximal end and a distal end; and

    a tube defining a guidewire lumen, coupled to and coextensive with at least a distal section of said elongate catheter body said tube defining said guide wire lumen being received in said groove so that when said balloon is uninflated, said guide wire lumen can adopt an essentially straight configuration in the region of the balloon and wherein said tube defining said guide wire lumen passes through a surface of said balloon and extends within the distal section of said balloon.

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