Compression bone screw
View Patent ↗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.
1. A compression bone screw, comprising;
a shank having opposite first and second shank sections along its axial extent with a first thread being connected in a rotationally fixed manner to the shank in the region of the first shank section,
a threaded component bearing a second thread and the second shank section being designed for rotatable reception of the threaded component, and
a snap ring separate from the shank and threaded component and radially expandable for fitting onto the shank to couple the threaded component to the shank.
2. A compression bone screw according to claim 1 wherein the shank defines a radially outward indentation for latching reception of the snap ring and the threaded component defines a radially inward indentation for latching reception of the snap ring.
3. A compression bone screw according to claim 1 wherein the snap ring is disposed radially between the shank and the threaded component and prevents relative axial movement between the shank and the threaded component.
4. A compression bone screw, comprising;
a shank having opposite first and second shank sections along its axial extent with a first thread being connected in a rotationally fixed manner to the shank in the region of the first shank section,
a threaded component bearing a second dread and the second shank section being designed for rotatable reception of the threaded component, and
a snap ring radially expandable for fitting onto the shank to couple the threaded component to the shank and prevent relative axial movement between the threaded component and the shank.
5. A compression bone screw according to claim 4 wherein the shank defines a radially outward indentation for latching reception of the snap ring and the threaded component defines a radially inward indentation for latching reception of the snap ring.