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US 8,137,389 B2Granted
Bone screw
AssigneeBiedermann Motech GmbH
InventorsLutz Biedermann, Jürgen Harms, Ronald W. Lindsey
Life of this patent
Estimating the term…
Abstract
A bone screw is created, with a thread section with a tip at a first end and a head for engaging with a screwdriver at the opposite second end, which serves as traction element to connect shattered or split off parts of bones to one another. So that fusion of the screw with the bones can take place, the thread section is constructed as tubular and its wall has a plurality of recesses.
Claims15
A bone screw comprising:
- a monolithic tubular body having a first end and a second end and a cavity extending entirely through the monolithic tubular body from the first end to the second end, the monolithic tubular body comprising a tubular wall defining the cavity with a plurality of recesses entirely through the tubular wall to the cavity;
- an exterior bone thread on an exterior tubular surface of the tubular wall;
- an interior tubular surface of the monolithic tubular body extending inwardly from each of the first and second ends;
- a head configured to engage with a driver, the head also configured to directly connect to the interior tubular surface at the first end of the monolithic tubular body in a first arrangement and at the second end of the monolithic tubular body in a second arrangement;
- and
- a tip configured to directly connect to the interior tubular surface at the first end of the monolithic tubular body in the second arrangement and the second end of the monolithic tubular body in the first arrangement;
- wherein the tip is connectable with the monolithic tubular body independently of the head;
- wherein the interior tubular surface at each of the first and second ends of the monolithic tubular body comprises an interior thread;
- wherein the monolithic tubular body has an entire length from the first end to the second end and the exterior bone thread extends over the entire length of the monolithic tubular body.
6 more elements
A bone screw comprising:
- a monolithic tubular body having a first end and a second end and a cavity extending entirely through the monolithic tubular body from the first end to the second end, the monolithic tubular body having a cylindrical wall defining the cavity with a plurality of recesses entirely through the cylindrical wall to the cavity;
- an exterior bone thread on an exterior cylindrical surface of the cylindrical wall;
- an interior tubular surface of the monolithic tubular body extending inwardly from each of the first and second ends;
- a head configured to engage with a driver, the head also configured to directly connect to the interior tubular surface at the first end of the monolithic tubular body in a first arrangement and at the second end of the monolithic tubular body in a second arrangement;
- and
- a tip configured to directly connect to the interior tubular surface at the first end of the monolithic tubular body in the second arrangement and the second end of the monolithic tubular body in the first arrangement;
- wherein the monolithic tubular body has an entire length from the first end to the second end and the exterior bone thread extends over the entire length of the monolithic tubular body and a largest outer diameter of the bone thread is constant over the entire length of the monolithic tubular body;
- wherein the tip is connectable with the monolithic tubular body independently of the head;
- wherein the interior tubular surface at each of the first and second ends of the monolithic tubular body comprises an interior thread.
6 more elements
Dependencies are inferred from the claim text.