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Powered tissue modification devices and methods

  • US 9,456,829 B2
  • Filed: 06/10/2013
  • Issued: 10/04/2016
  • Est. Priority Date: 10/15/2004
  • Status: Active Grant
First Claim
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1. A device for modifying tissue in a spine configured for insertion through a first incision on a patient, the device comprising:

  • an elongate body extending distally and proximally;

    a movable tissue modifying member comprising a substantially flat tissue engaging face including a plurality of cutting edges, the movable tissue modifying member located at or near a distal end of the elongate body;

    a flexible shaft extending the length of the elongate body, the flexible shaft coupled to the movable tissue modifying member and having a drive member coupled with the movable tissue modifying member and configured to actuate the movable tissue modifying member, wherein being configured to actuate the movable tissue modifying member includes being configured to move the substantially flat tissue engaging face for causing the cutting edges thereof to at least one of move in a linear manner, move in a rotational manner, and move in an oscillatory manner;

    a guidewire coupler or anchor member at the distal end of the elongate body device configured to grasp a guidewire extending through at least a portion of the elongate body from the distal end of the elongate body and outwardly through a second incision on the patient for applying a tensioning force pulling the tissue modifying member against a target tissue to be modified; and

    a trigger handle at a proximal end of the elongate body, the trigger handle being fixed to the elongate body and having an actuator used to activate the tissue modifying member, the actuator being a trigger in combination with a power transmission member coupled to the drive member to power the drive member, the trigger that when squeezed or pulled causes the tissue modifying member to modify the target tissue.

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