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Discectomy kits with an obturator, guard cannula

  • US 10,448,967 B2
  • Filed: 11/06/2015
  • Issued: 10/22/2019
  • Est. Priority Date: 12/03/2011
  • Status: Active Grant
First Claim
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1. A tissue removal device, comprising:

  • a handle having a proximal end and a distal end;

    a vacuum connection at the proximal end of the handle;

    a shaft extending distally from the distal end of the handle, the shaft having an inner lumen and defining a longitudinal axis, an exterior side surface of the shaft forming an exterior of the device; and

    an opening at a distal end of the shaft, a perimeter of the opening circumscribing the inner lumen and forming a cutting surface adapted for cutting tissue, the cutting surface having one or more blade tips that point back towards the inner lumen at an angle of greater than 90 degrees from a central axis of the inner lumen;

    wherein a base of a blade tip of the one or more blade tips that point back towards the inner lumen is disposed on a same side of the central axis of the inner lumen as the blade tip;

    wherein the perimeter of the opening is stationary relative to the shaft;

    wherein a cross-sectional area of the opening is less than a cross-sectional area of the inner lumen; and

    wherein the inner lumen is in fluid communication with the vacuum connection.

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