US 11,744,624 B2
Bone screw
Klaus Pastl, Lichtenberg (AT)
Assigned to SURGEBRIGHT GMBH, Lichtenberg (AT)
Appl. No. 16/470,837
Filed by SURGEBRIGHT GMBH, Lichtenberg (AT)
PCT Filed Aug. 9, 2018, PCT No. PCT/EP2018/071619
§ 371(c)(1), (2) Date Jun. 18, 2019,
PCT Pub. No. WO2019/034522, PCT Pub. Date Feb. 21, 2019.
Claims priority of application No. A 50672/2017 (AT), filed on Aug. 14, 2017.
Prior Publication US 2019/0307496 A1, Oct. 10, 2019
Int. Cl. A61B 17/86 (2006.01); A61B 17/88 (2006.01)
CPC A61B 17/862 (2013.01) [A61B 17/866 (2013.01); A61B 17/8625 (2013.01); A61B 17/8883 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A bone graft comprising:
a screw shank provided with an external thread;
a screw head configured for introducing a torque;
the screw shank and the screw head comprising a cortical bone material;
the screw head having an outer jacket surface rotationally symmetrical about a screw head axis;
the screw head comprising an external thread and at least two recesses distributed about the screw head axis;
the screw head having a free end with an end face;
the at least two recesses of the screw head extending axially in a direction of the screw head axis and open into the end face of the free end of the screw head to thereby be configured to receive an insertion tool for endoscopic or arthroscopic insertion of the screw;
each of the recesses being formed by side surfaces that extend from the outer jacket surface in a direction toward the screw head axis and merge into one another in a surface section close to the screw head axis, with each of the recesses as seen in the direction of the screw head axis having an inner radial section being formed by the side surfaces that extend in a radial direction below the thread and an outer radial section being formed by the side surfaces that extend in a radial direction into the thread region, and the radial depth of the inner radial section being larger than the radial height of the outer radial section.