Stryker Trauma Sa

Sepitec Foundation

Clemens Dransfeld

Vinzenz Andreas Burgherr

Christian Lutz

Roland Thomke

René Fischer

Damian Fankhauser

Fritz Magerl

Roger Roland Tognini

Erich Wintermantel

Walter Spirig

Thomas Andreas Peter

J&ouml;rg Mayer

A clamping element for the clamping of multiple rod-shaped elements has two opposing jaws, which have a number of corresponding grooves for the acceptance of a corresponding number of rod-shaped elements such as bone pins. Spring elements are provided, with which in the resting position the closed jaws are tensed, to hold the rod-shaped elements in position.

Clamp for multiple rod shaped elements

A one-piece clamping element has two opposing clamping jaws forming a laterally open cavity to receive a rod-shaped element. A hinge is located between the jaws, arranged opposite the cavity, and connecting the clamping jaws with one another and thus allowing them to be movable with respect to one another. Each clamping jaw has one bore, aligned flush with one another. One clamping jaw has a receptacle for an anti-rotation device. The receptacle makes it preferable&#x2014;with the exception of an immediate tightening of the screw in this or another place of an external fixator clamping element used for the same patient&#x2014;to use the clamping element only once and discarding it after use. Two identical clamping elements, with the possible exception of the size of the rod receptacle, can be placed on top of one another to form an articulation element.

Clamping and articulation element

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

An implant for osteosyntheses including a plate with a plurality of holes following in succession in the longitudinal direction whereby at least most of the holes intended to receive the screws are offset in alternation generally away from a center plane whereby a center axis of each of the holes forms an acute angle with the center plane of the plate.

Implant for osteosyntheses

Growing community of inventors

Niederlenz, Switzerland

Clemens Dransfeld