Sepitec Foundation

Walter Spirig

Erich Wintermantel

Roger Roland Tognini

Fritz Magerl

Jörg Mayer

Clemens Dransfeld

Guido Hasler

Thomas Andreas Peter

J&ouml;rg Mayer

Helmut &Ouml;sterle

A composite of polymer or ceramic material has reinforcing fibers. The composite is for use in manufacturing medical implants like osteosynthesis plates, endoprostheses, screw coupling elements, surgical instruments, and similar components. The fibers and fibrous parts are made from a material that absorbs X-rays so that it can be seen during X-ray examination.

Composite of polymer or ceramic materials and component made of such a composite

An osteosynthesis screw ( ) used especially for application by a translaminar vertebral screw, comprises a shaft ( ) at least partially provided with a thread ( ) and a head ( ) formed at one of its ends and having a notch ( ) for a tool. Said shaft ( ) has a section (A) with a thread ( ) on the end section oriented towards the head ( ). The remaining section (B) of the shaft ( ) up to the free end is produced without a thread. The head ( ) has a diameter (D ) corresponding at least approximately to the outer diameter (DA) of the thread ( ) and is provided with the inner notch ( ) for a tool. The section (A) of the shaft ( ) with the thread ( ) has a configuration of uniform thickness, e.g. a trilobular configuration. Thus, the invention provides an osteosynthesis screw ( ) exhibiting a short section (A) with a thread ( ) and a long section (B) without a thread, said screw having a pull-out head ( ) which is secured both axially and rotationally.

Osteosynthesis screw, especially for application by a translaminar vertebral screw

The invention relates to an osteosynthesis screw ( ) comprising a shaft ( ) with a thread ( ) and a head ( ) formed at one end and having a notch ( ) for a tool. The shaft region ( ) with the thread has a configuration with a uniform thickness, ie. trilobular. This configuration prevents inverse rotation due to rapid further growth of tissue

Osteosynthesis screw

Growing community of inventors

Platz-Walzenhausen, Switzerland

Walter Spirig