Patents by Inventor John K. Wilhelmy

John K. Wilhelmy 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).

  • Patent number: 5722977
    Abstract: Presented is a method and instrumentation for removal of a pair of rectangular blocks of vertebral bone tissue of predetermined and precise dimensions to provide an intervertebral recess, with guarded depth for safety, achieving and maintaining the desired intervertebral space, as well as obtaining and injecting into the intervertebral recess a well-fitted bone plug of the same dimension as the recess that receives it. Two cooperating instruments are utilized in the invention, one being an intervertebral mortising cutter and the other a precision guide and spacer. The guide and spacer functions dually to retain the associated adjacent vertebrae at a precise selected and predetermined spacing and to guide penetration of the mortising cutter. Following advancement of the mortising cutter into the bone tissue of the two adjacent vertebrae, the instruments, along with the blocks of bone tissue, are removed from the site to produce a precisely configured recess.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: March 3, 1998
    Assignee: Danek Medical, Inc.
    Inventor: John K. Wilhelmy