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Cutting balloon catheter having flexible atherotomes

  • US 8,361,096 B2
  • Filed: 09/19/2011
  • Issued: 01/29/2013
  • Est. Priority Date: 11/12/2004
  • Status: Active Grant
First Claim
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1. A cutting balloon catheter, comprising:

  • an elongate catheter shaft;

    a balloon coupled to a distal portion of the catheter shaft, the balloon being configured to be inflated from a deflated configuration to an expanded configuration;

    a flexible joining member mounted on the balloon; and

    a cutting member coupled to the joining member, the cutting member including a cutting edge, a base portion, and a slot extending from the cutting edge toward the base portion dividing the cutting edge into a first cutting edge portion and a second cutting edge portion discontinuous with the first cutting edge portion, the cutting member being constructed of a single, continuous piece of material forming the first cutting edge portion, the second cutting edge portion and the base portion;

    wherein each of the first cutting edge portion and the second cutting edge portion have a length greater than a width of the slot; and

    wherein the base portion of the cutting member includes a plurality of tabs having a splayed pillar-like shape defined along the base portion embedded in the flexible joining member to interlock the flexible joining member to the cutting member.

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