Patents by Inventor Shaw Akizuki

Shaw Akizuki 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).

  • Tibial prosthesis with asymmetric articular surfaces
    Patent number: 7625407
    Abstract: A tibial prosthesis has tibial articular surfaces including a medial articular surface in a medial compartment and a lateral articular surface in a lateral compartment. The medial articular surface follows a first arcuate track having a first radius of curvature and a first posterior segment extending along a posterior aspect of the medial compartment to a first superior-interior location. The lateral articular surface follows a second arcuate track having a second radius of curvature and a second posterior segment extending along a posterior aspect of the lateral compartment to a second superior-inferior location. The second posterior segment has a slope extending in an inferior direction along the posterior aspect of the lateral compartment such that the second superior-inferior location is spaced a predetermined distance in an inferior direction from the first superior-inferior location.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: December 1, 2009
    Assignee: Howmedica Osteonics Corp.
    Inventors: Shaw Akizuki, Michael C. Phipps, Kevin P. Sichler
  • Tibial prosthesis with asymmetric articular surfaces
    Publication number: 20070185581
    Abstract: A tibial prosthesis has tibial articular surfaces including a medial articular surface in a medial compartment and a lateral articular surface in a lateral compartment, the medial articular surface following a first arcuate track having a first radius of curvature and a first posterior segment extending along a posterior aspect of the medial compartment to a first point located adjacent a posterior edge of the tibial prosthesis at a first superior-inferior location, and the lateral articular surface following a second arcuate track having a second radius of curvature and a second posterior segment extending along a posterior aspect of the lateral compartment to a second point located adjacent the posterior edge of the tibial prosthesis at a second superior-inferior location, the second posterior segment having a slope extending in an inferior direction along the posterior aspect of the lateral compartment such that the second superior-inferior location is spaced a predetermined distance in an inferior directi
    Type: Application
    Filed: February 7, 2006
    Publication date: August 9, 2007
    Applicant: Howmedica Osteonics Corp.
    Inventors: Shaw Akizuki, Michael Phipps, Kevin Sichler