Bone screw
OwnerChad Munro, Peter Senninventors
Life of this patent
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Abstract
A bone screw having a threaded shaft 15 which has a thread having an outer diameter DA, a frontal thread end and a thread profile. The thread profile has a frontal thread flank which is directed towards the frontal thread end 4, a rear thread flank 18 and a flank angle δ. The thread is multipath, preferably a double path thread where each thread path has a blade-type element with a cutting edge on the frontal thread end. The bone screw 1 also has a longitudinal axis 2. For accommodating a guide wire, the bone screw 1 is provided with a central borehole 9, which is coaxial with its longitudinal axis 2.
Claims19
A bone screw having a longitudinal axis comprising:
- a threaded shaft which includes a threaded section with an external diameter DA, a frontal thread end of the threaded section, and a thread profile,
- wherein the thread profile has a front threaded flank directed towards the frontal thread end (4) of the threaded section, a rear threaded flank and a flank angle β,
- wherein the threaded section has a multiple thread, and each thread of the threaded section at the frontal thread end of the threaded section has a knife-like element with a cutting edge.
(canceled)
Dependencies are inferred from the claim text.