Patents by Inventor Karin Buttner-Janz

Karin Buttner-Janz 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).

  • Publication number: 20120089230
    Abstract: An intervertebral disc prosthesis for the total replacement of a intervertebral disc within the lumbar and cervical spine is disclosed. The intervertebral disc prosthesis comprises articulating sliding partners and at least one sliding surface that is between two sliding partners. Two part designs are described in which only a dorsoventral- and rotational movement is possible as a result of laterolaterally aimed, transversally arched, ventrally curved cylindrical convexity(ies) and corresponding concavity(ies), without an inclination of the sliding partners in a lateral direction. In a further design, the cylindrical articulation surfaces have no curvature, enabling a motion of the sliding partners in only a ventrodorsal direction. According to the invention, the intervertebral disk prostheses are suited for implantation from lateral and ventrolateral, particularly in revision surgeries.
    Type: Application
    Filed: August 15, 2011
    Publication date: April 12, 2012
    Inventor: Karin Büttner-Janz
  • Publication number: 20100137992
    Abstract: Disclosed is an intervertebral disc prosthesis for the total replacement of a natural intervertebral disc within the lumbar and cervical spine, comprising of articulating sliding partners. The upper sliding partner has means for a firm assembly to an upper vertebral body and the lower sliding partner has means for a firm assembly to a lower vertebral body. At least one sliding surface is between two sliding partners. Two- and three-part functional designs are planned and both having in common, that, as a result of the shape of the articulating surface(s), the laterolateral and dorsoventral motion amplitudes differ. The resulting angles including the rotation around a fictitious vertical axis can be defined to a desired extent.
    Type: Application
    Filed: February 2, 2010
    Publication date: June 3, 2010
    Inventors: Karin Büttner-Janz, Eiko Büttner
  • Patent number: 5556431
    Abstract: An intervertebral disc endoprosthesis which is to be inserted between two vertebrae and has a bottom plate and a top plate which are to be connected to the endplates, facing them, of the vertebrae additionally has screw fastening facilities in order to increase the security of retention of the prosthesis. These screw fastening facilities are formed, for example, by in each case at least one borehole which runs essentially at right angles to the plane of the bottom or top plate and through which a bone screw can be inserted. The center of articulation of the prosthesis is displaced towards the rear relative to the center of the vertebral endplates in order to achieve a more favorable course of the force and, at the same time, to provide space in the ventral edge area to receive the bone screws.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: September 17, 1996
    Inventor: Karin Buttner-Janz
  • Patent number: 5401269
    Abstract: Intervertebral disc endoprosthesis with two prosthesis plates which are to be connected to the end plates of the relevant vertebrae, and with a prosthesis core which cooperates with at least one prosthesis plate via an articular surface permitting a rotational movement around the vertical axis, In order indeed to make possible a rotational movement around the vertical axis but to oppose this movement by a resistance, the articular surface forms curved arches of different average radius in the median section and in the frontal section. The radius of curvature in the sagittal section is expediently less than in the frontal section. To avoid excessive twisting it is possible to provide stops on the prosthesis plates and on the prosthesis core. These are designed, for example, as ribs and grooves which run in the median plane.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: March 28, 1995
    Assignee: Waldemar Link GmbH & Co.
    Inventors: Karin Buttner-Janz, Arnold Keller, Jean-Philippe Lemaire