Patents Assigned to Orthoplant Endoprothetik
  • Patent number: 4856503
    Abstract: Given is a device for cutting a thread in a cup-shaped bone, in particular in the acetabulum of a human pelvis bone, which includes a cutter holder on a drive shaft, with a radially, outwardly directed cutting blade being disposed on the cutter holder. In order to cut, in simple fashion, a correctly dimensioned threading into the bone tissue with a desired depth of cut, the device includes a cutter gauge capable of being fixed in the cup space, with the cutter gauge having a central boring and an open cutting channel running spirally about the longitudinal axis of the boring. The cutter holder is capable of being introduced centrally into the boring of the cutter gauge and is capable of being set into a forcefully guided, spiral cutting movement with introduction of the blade into the cutting channel, during the course of which the cutting blade cuts the thread precisely in the bone tissue.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: August 15, 1989
    Assignee: Orthoplant Endoprothetik GmbH
    Inventor: Klaus-Dieter Schelhas
  • Patent number: 4822370
    Abstract: Given a hip joint femoral prosthesis having a shaft, a spherical head and a connecting part between the shaft and the head. Disposed at the proximal end of the shaft and in the head in each case is a conical boring. Located at the shaft side end and at the head side end of the connecting part is a socket cone cooperating with each conical boring. The longitudinal axis of the first socket cone and the longitudinal axis of the second socket cone of the connecting part intersect at a predetermined angle 0.ltoreq..beta..ltoreq.50.degree. (zero is less than or equal to beta and beta is less than or equal to 50.degree.), in order to be able to adapt better the relative position of the head to the shaft, individually, to the conditions of the patient.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: April 18, 1989
    Assignee: Orthoplant Endoprothetik
    Inventor: Klaus-Dieter Schelhas
  • Patent number: 4715859
    Abstract: Presented is a hip cup for a hip joint acetabular prosthesis comprising an outer cup having a hemispherical or truncated cone external form and an inner hemispherical cup that is capable of being inserted into the outer cup. Running externally about the outer shell is a self-cutting thread for cementless anchoring of the hip cup, the outer diameter of which is approximately constant over the entire axial length of the thread.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: December 29, 1987
    Assignee: Orthoplant Endoprothetik GmbH
    Inventors: Klaus-Dieter Schelhas, Gerd Biehl