Patents by Inventor Matthias Schapper

Matthias Schapper 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).

  • Knee prosthesis with guided extension and flexion
    Patent number: 8992626
    Abstract: An orthopaedic knee joint prosthesis (10) provides guided motion in a wide range of motion, and in both extension and flexion. In flexion, a tibial bearing component (16) shifts to a first position in which a posterior cam (36) formed in a femoral component (12) engages a tibial spine (18) coupled to a tibial component (14). Contact between the posterior cam and the spine guides the motion profile of the knee joint prosthesis throughout a wide range of flexion movement. In extension, the bearing component shifts to a second position in which an anterior cam (34) formed in the femoral component engages the spine. Contact between the anterior cam and spine guides the motion profile of the knee joint prosthesis throughout a wide range of extension. The anterior and posterior cams, mobile bearing component, and tibial component-mounted spine cooperate to facilitate guided flexion and extension of the knee joint prosthesis throughout a wide range of motion.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: March 31, 2015
    Assignee: Zimmer GmbH
    Inventors: Marco A. H. Heggendorn, Roger Scherrer, Matthias Schapper
  • KNEE PROSTHESIS WITH GUIDED EXTENSION AND FLEXION
    Publication number: 20140018929
    Abstract: An orthopaedic knee joint prosthesis (10) provides guided motion in a wide range of motion, and in both extension and flexion. In flexion, a tibial bearing component (16) shifts to a first position in which a posterior cam (36) formed in a femoral component (12) engages a tibial spine (18) coupled to a tibial component (14). Contact between the posterior cam and the spine guides the motion profile of the knee joint prosthesis throughout a wide range of flexion movement. In extension, the bearing component shifts to a second position in which an anterior cam (34) formed in the femoral component engages the spine. Contact between the anterior cam and spine guides the motion profile of the knee joint prosthesis throughout a wide range of extension. The anterior and posterior cams, mobile bearing component, and tibial component-mounted spine cooperate to facilitate guided flexion and extension of the knee joint prosthesis throughout a wide range of motion.
    Type: Application
    Filed: November 10, 2011
    Publication date: January 16, 2014
    Applicant: ZIMMER GMBH
    Inventors: Marco A.H. Heggendorn, Roger Scherrer, Matthias Schapper