Orthopedic Locking Screw
AssigneeStryker European Holdings I, LLC
InventorsManfred Wieland, Nils Zander
Life of this patent
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Abstract
The invention relates to an orthopedic locking screw, an orthopedic locking system, and a method for manufacturing an orthopedic locking screw. The orthopedic locking screw may be used for locking an intramedullary nail. The orthopedic locking screw comprises a screw shaft. The screw shaft comprises a recess. The recess extends at least partially along a longitudinal axis of the screw shaft. The recess extends at least partially along a chord of a cross section of the screw shaft. A surface of a circular segment comprising the chord is at least partially provided with a threaded portion.
Claims19
An orthopedic locking screw,
- wherein the orthopedic locking screw comprises a screw shaft,
- wherein the screw shaft comprises a recess,
- wherein the recess extends at least partially along a longitudinal axis of the screw shaft,
- wherein the recess extends at least partially along a chord of a cross section of the screw shaft, and
- wherein a surface of a circular segment comprising the chord is at least partially provided with a threaded portion.
A method for manufacturing an orthopedic locking screw, comprising the following steps:
- providing a screw comprising a screw shaft,
- forming a recess in the screw shaft,
- wherein the recess extends at least partially along a longitudinal axis of the screw shaft and a chord of a cross section of the screw shaft, and
- forming a threaded portion at least partially in a surface of a circular segment comprising the chord.
An orthopedic locking screw,
- wherein the orthopedic locking screw comprises a screw shaft,
- wherein the screw shaft has a slot formed therein,
- wherein the slot extends at least partially along a longitudinal axis of the screw shaft, and
- extends at least partially along a chord of a cross section of the screw shaft offset from the axis, the chord forming a shaft segment having an arcuate outer surface, wherein the arcuate outer surface of the segment is at least partially provided with a threaded portion, a peak of the threaded portion having a first radial distance from the longitudinal axis that is greater than a second radial distance from the longitudinal axis of a surface of a non-threaded area of the shaft.
Dependencies are inferred from the claim text.