Bone screw
AssigneeBiedermann Technologies GmbH & Co. KG
InventorsLutz Biedermann, Wilfried Matthis
Life of this patent
Estimating the term…
Abstract
A bone screw is provided that includes a tubular body having a first end and a closed second end. The tubular body has a tubular wall defining a cavity wherein the thickness of the wall in a radial direction is smaller than an inner radius of the cavity and wherein a plurality of recesses is provided extending entirely through the tubular wall into the cavity. The tubular body further includes an exterior bone thread on an exterior tubular surface portion of the tubular wall, a head at the first end configured to engage with a driver to advance the bone screw in the bone, and a tip at the second end. The tubular body, the head and the tip are formed as a single piece.
Claims17
A bone screw comprising:
- a tubular body having a first end and a closed second end, wherein the tubular body has a tubular wall defining a cavity wherein the thickness of the wall (d) in a radial direction is smaller than an inner radius of the cavity and wherein a plurality of recesses is provided extending entirely through the tubular wall into the cavity;
- an exterior bone thread on an exterior tubular surface portion of the tubular wall;
- a head at the first end configured to engage with a driver to advance the bone screw in the bone;
- and
- a tip at the second end;
- wherein the tubular body, the head and the tip are formed as a single piece.
A bone screw comprising:
- a tubular body having a first end and a second end, wherein the tubular body has a tubular wall defining a cavity wherein the thickness of the wall (d) in a radial direction is smaller than an inner radius of the cavity and wherein a plurality of recesses is provided extending entirely through the tubular wall into the cavity;
- an exterior bone thread on an exterior tubular surface portion of the tubular wall;
- a head at the first end configured to engage with a driver to advance the bone screw in the bone, wherein the head has a largest outer diameter that is larger than the outer diameter of the tubular body;
- and
- a tip at the second end;
- wherein the tubular body, the head and the tip are formed as a single piece.
A bone screw comprising:
- a cylindrical tubular body having a first end and a second end, wherein the tubular body has a tubular wall defining a cavity wherein the thickness of the wall (d) in a radial direction is smaller than an inner radius of the cavity and wherein a plurality of recesses is provided extending entirely through the tubular wall into the cavity;
- an exterior bone thread on an exterior tubular surface portion of the tubular wall;
- a head at the first end configured to engage with a driver to advance the bone screw in the bone;
- and
- a tip at the second end;
- wherein the tubular body, the head and the tip are formed as a single piece.
A bone screw comprising:
- a tubular body having a first end and a second end, wherein the tubular body has a tubular wall defining a cavity wherein the thickness of the wall (d) in a radial direction is smaller than an inner radius of the cavity and wherein a plurality of recesses is provided extending entirely through the tubular wall into the cavity;
- an exterior bone thread on an exterior tubular surface portion of the tubular wall;
- a head at the first end configured to engage with a driver to advance the bone screw in the bone;
- and
- a tip at the second end;
- wherein the tubular body, the head and the tip are formed as a single piece,
- wherein a guide member is provided that is insertable into the tubular body and that has a coaxial bore for guiding a guide wire therethrough.
Dependencies are inferred from the claim text.