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Tissue modification devices and methods

  • US 8,398,641 B2
  • Filed: 12/27/2011
  • Issued: 03/19/2013
  • Est. Priority Date: 07/01/2008
  • Status: Active Grant
First Claim
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1. A bimanually controlled tissue modification device for cutting tissue in a patient, the device comprising:

  • a tissue modification region;

    at least two flexible elongate lengths of cable, wherein the lengths of cable extend substantially adjacent to each other proximally to distally;

    a plurality of rungs extending between the lengths of cable, wherein the rungs are proximal to the tissue modification region of the device;

    at least one region of each length of cable that is within the tissue modification region which is configured as a cutting member;

    a spacer extending between the cutting members and comprising a plurality of restraints at outer edges of the spacer and configured to releasably hold the cutting members apart from one another until the cutting members have cut into tissue to a depth that is greater than a thickness of the cutting member; and

    a guidewire coupler at the distal end region of the device configured to engage a tip of a guidewire.

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