Patents by Inventor John Nordt

John Nordt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Safety knife for resection of annulus
    Patent number: 7731719
    Abstract: A cutting instrument for use in the complete removal of the annulus fibrosus of an intervertebral disc contains a curvature in the shaft. The curvature forms a guide that rests upon an intervertebral disc and guides the cutting head around the circumference of the intervertebral disc. The curvature of the shaft of the instrument conforms to the circumference of the intervertebral disc and prevents vessels and extra spinal tissue surrounding the intervertebral disc from being damaged particularly when cutting the posterior portion of the intervertebral disc where visibility is minimal. The cutting instruments contain blunt blade guards further minimizing any potential damage to tissue surrounding the intervertebral disc.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: June 8, 2010
    Inventor: John Nordt
  • Safety knife for resection of annulus
    Publication number: 20060149267
    Abstract: A cutting instrument for use in the complete removal of the annulus fibrosus of an intervertebral disc. The instrument contains a curvature in the shaft that forms a guide which rests upon an intervertebral disc and guides the cutting head around the circumference of the intervertebral disc. The curvature of the shaft of the instrument conforms to the circumference of the intervertebral disc and prevents vessels and extra spinal tissue surrounding the intervertebral disc from being damaged particularly when cutting the posterior portion of the intervertebral disc where visibility is minimal. The cutting instruments contain blunt blade guards further minimizing any potential damage to tissue surrounding the intervertebral disc.
    Type: Application
    Filed: December 22, 2004
    Publication date: July 6, 2006
    Inventor: John Nordt