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Dilation catheter and method of treatment therewith

  • US 5,704,913 A
  • Filed: 05/19/1994
  • Issued: 01/06/1998
  • Est. Priority Date: 02/16/1993
  • Status: Expired due to Term
First Claim
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1. A catheter for insertion into a bodily conduit, said catheter comprising:

  • a shaft comprising at least first and second lumens for delivery of fluid inflation media;

    a primary balloon having a generally cylindrical wall concentric with said shaft and defining a primary chamber, said primary chamber being in fluid communication with said first lumen for inflation of said primary balloon;

    a secondary balloon comprising an array formed of a plurality of radially disposed inflatable secondary chambers disposed cylindrically about said primary balloon, wherein each of said secondary chambers has a proximal end and is defined by at least an inner wall and an outer wall, said primary balloon wall providing said inner wall for each of said secondary chambers;

    means to inflate each of said secondary chambers, said means including a plurality of channels, wherein each of said channels is in fluid communication with one of said secondary chambers and with said second lumen, said channels extend into said proximal ends of each of said secondary chambers, and circumferential webs separate said channels from each other.

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