Patents by Inventor Peter Griss

Peter Griss 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: 5788699
    Abstract: A medical drill for drilling holes in a bone or cartilage is formed with an end drill section. The end drill section has a specially formed drill tip at the distal end. The drill tip includes a flattened section which is located diametrically in relation to the central axis of the drill. The drill may be formed on the end of a router to provide a single loop to drill a pilot hole and then continue with the routing process. The drill section minimizes the heat created within the bone or cartilage.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: August 4, 1998
    Assignee: Endocare AG
    Inventors: Frank Bobst, Peter Griss
  • Patent number: 5536268
    Abstract: The present invention relates to a system for osteosynthesis at the vertebral column, in particular for stabilizing spinal segments including at least one rodlike connecting element (14) and at least two retaining units (12). Each retaining unit can be anchored to a spinal segment with a tuning-fork-shaped head, (15) the two limbs (16, 17) of which delimit an approximately U-shaped receptacle (18) for the connecting element (14) A clamping screw (19) can be screwed into the receptacle (18) to fix the connecting element (14) between the two limbs (16, 17) of the tuning-fork-shaped screw head (15) The floor (22) of the receptacle (18) has a concave shape to correspond to a swivel-bearing element (23) disposed between the floor (22) of the receptacle (18) and the connecting element (14) The element (24) has a bearing surface (24) faces the floor (22) of the receptacle (18) and, has a complementary convex curvature.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: July 16, 1996
    Assignee: Plus Endoprothetik AG
    Inventor: Peter Griss
  • Patent number: 4923473
    Abstract: The hemispherical acetabulum has a pin which projects from the cup of the acetabulum on an angle of relative to the polar axis. A sleeve which closes over the pin is rotatably mounted on the pin to facilitate twisting of the cup into a correct position when implanted in a pelvis. The sleeve is made of metal to preclude direct contact between the pin which may be made of plastic and the pelvis bone tissue.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: May 8, 1990
    Assignee: Sulzer Brothers Limited
    Inventors: Peter Griss, Rudolf Koch
  • Patent number: 4828566
    Abstract: The shank is provided with a recess in the proximal medial region and a U-shaped wire mesh structure is secured within the recess. The wire mesh structure provides for an ingrowth of bone tissue at the medial narrow side of the shank and an absorption of shear micro movements between a bone and the implant. The mesh structure can be secured in place by rivets or by weld seams.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: May 9, 1989
    Assignee: Sulzer Brothers Limited
    Inventor: Peter Griss
  • Patent number: 4407022
    Abstract: The shaft portion of an artificial hip joint intended for cement-free anchoring in a femur which is generally rectangular in cross-section and is provided with outwardly projecting steps for direct transfer of axial forces between the shaft and the bone tissue, one half of the steps being transversely inclined with respect to the shaft axis with the other half of the steps inclined in the opposite direction by an equal amount to prevent rotation of the shaft as a result of the development of equal and opposite components of force.
    Type: Grant
    Filed: June 16, 1981
    Date of Patent: October 4, 1983
    Assignee: Steinzeug- und Kunststoffwerke Friedrichsfeld GmbH
    Inventors: Gunther Heimke, Peter Griss
  • Patent number: 4031571
    Abstract: The thigh portion of an endoprosthesis for hip joints is provided with stepped projecting surfaces to distribute forces in the bone tissue.
    Type: Grant
    Filed: December 24, 1975
    Date of Patent: June 28, 1977
    Assignee: Friedrichsfeld GmbH Steinzeug-und Kunststoffwerke
    Inventors: Gunther Heimke, Peter Griss
  • Patent number: 4004581
    Abstract: A rotary cutter for making the socket bed for a complete endoprosthesis is slidable on a guide rod, which rod is first inserted into a guide bore which has previously been made in the hip bone. The relative axial position of the cutter with respect to the rod indicates the depth of penetration of the cutter.
    Type: Grant
    Filed: September 9, 1975
    Date of Patent: January 25, 1977
    Assignee: Friedrichsfeld GmbH
    Inventors: Gunther Heimke, Peter Griss, Hanns Von Andrian Werburg, Paul Wachter
  • Patent number: 3939497
    Abstract: A socket for hip joint prosthesis is secured to a cavity in the bone tissue by a series of radially arranged pegs which can be projected outwardly from the wall of the socket into the surrounding tissue by a central screw member which also has a self-tapping thread which also enters the tissue.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: February 24, 1976
    Assignee: Friedrichsfeld GmbH. Steinzeug-und Kunststoffwerke
    Inventors: Gunther Heimke, Peter Griss, Hanns Von Andrian-Werburg, Herbert Heil, Paul Wachter