Compression bone screw and screwdriver blade therefor
AssigneeStryker Leibinger GmbH & Co. KG
InventorsReinhard Rubecamp, Felix Capanni, Hans-Urs Eckerle, Peter Forst
Life of this patent
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Abstract
Compression bone screw and screwdriver blade therefor A compression bone screw is described, with a shank having two opposite shank sections along its axial extent, a first thread being connected in a rotationally fixed manner to the shank in the region of the first shank section. The shank has at least one latching element for rotatably coupling a threaded component bearing a second thread to the second shank section. The invention furthermore relates to a screwdriver blade for the compression bone screw.
Claims20
Compression bone screw with a shank having two opposite shank sections along its axial extent, a first thread being connected in a rotationally fixed manner to the shank in the region of the first shank section, and the second shank section being designed for rotatable reception of a threaded component bearing a second thread, and a coupling element deformable in the radial direction and serving for coupling the threaded component to the shank being additionally present.
Compression bone screw with a shank having two opposite shank sections along its axial extent, a first thread being connected in a rotationally fixed manner to the shank in the region of the first shank section, and the second shank section being designed for rotatable reception of a threaded component bearing a second thread, the shank having at least one latching element for coupling the second shank section to the threaded component.
Compression bone screw with a shank having two opposite shank sections along its axial extent, a first thread being connected in a rotationally fixed manner to the shank in the region of the first shank section, and the second shank section being designed for rotatable reception of a threaded component bearing a second thread, the shank having at least one latching element for coupling the second shank section to the threaded component, the first thread having a smaller diameter than the second thread and the shank having, between the first and the second shank section, cutting edges which have a predrilling function with respect to the second thread with the greater diameter.
Screwdriver blade for a compression bone screw with:
- a first force-application structure designed to cooperate with a first of two force-receiving structures of the compression bone screw;
- a second force-application structure extending rotatably through the first force-application structure and designed to cooperate with a second of the two force-receiving structures of the compression bone screw;
- and
- a coupling mechanism connecting, in a first position, the first force-application structure in a rotationally fixed manner to the second force-application structure and permitting, in a second position, a relative rotation between the first force-application structure and the second force-application structure.
Dependencies are inferred from the claim text.