Patents by Inventor Jeffery L. Pierson

Jeffery L. Pierson 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).

  • Device and method for locating the anteroposterior femoral axis to determine proper femoral component rotation in knee replacement
    Patent number: 7828752
    Abstract: A device for indicating the location of the anteroposterior femoral axis has a spike or needle that engages the anterior-most point in the intercondylar notch and a rounded or spherical surface is placed on the trochlear groove of the femur and urged in a posterior direction. That is, the rounded surface or ball is urged toward the bottom of the trochlear groove. This causes the rounded surface or ball to self-locate into the deepest point of the trochlear groove. The anterior-most point in the intercondylar notch and the deepest part of the trochlear groove anteriorly are points that accurately determine the anteroposterior femoral axis, and the device includes a marking device or guide member that is fixed perpendicular to this axis. A surgeon, therefore, has an accurate indication of the correct femoral component rotation for proper implant position in a knee replacement or other surgical procedure.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: November 9, 2010
    Assignee: Arthroplasty Innovations, LLC
    Inventors: R. Michael Meneghini, Jeffery L. Pierson
  • Device and method for locating the anteroposterior femoral axis to determine proper femoral component rotation in knee replacement
    Publication number: 20080139965
    Abstract: A device for indicating the location of the anteroposterior femoral axis has a spike or needle that engages the anterior-most point in the intercondylar notch and a rounded or spherical surface is placed on the trochlear groove of the femur and urged in a posterior direction. That is, the rounded surface or ball is urged toward the bottom of the trochlear groove. This causes the rounded surface or ball to self-locate into the deepest point of the trochlear groove. The anterior-most point in the intercondylar notch and the deepest part of the trochlear groove anteriorly are points that accurately determine the anteroposterior femoral axis, and the device includes a marking device or guide member that is fixed perpendicular to this axis. A surgeon, therefore, has an accurate indication of the correct femoral component rotation for proper implant position in a knee replacement or other surgical procedure.
    Type: Application
    Filed: October 5, 2006
    Publication date: June 12, 2008
    Inventors: R. Michael Meneghini, Jeffery L. Pierson