Medartis Holding Ag

Marc Ammann

Peter Scheuble

Simon Martin Schätzle

Barry Langer

Thomas Tribelhorn

Daniel Ebi

Daniel Kainz

Herbert Polzhofer

Radek Kebrle

A wrist arthrodesis plate () consisting of a distal region () and of a proximal region () which adjoins the distal region () in the direction of a longitudinal axis (A). The plate () is of such a shape and size that the distal region () of the plate can be fastened to the carpus () and a proximal region () of the plate can be fastened to the radius () by fastening devices, such as screws, which can be inserted into plate holes. A distal end region (), which comprises a farthest distal location () of the plate (), is of a shape and size that the distal end region () can be placed with the farthest distal location () exactly, and only, on a carpal bone from the group comprising trapezium (), trapezoid (), capitate () and hamate (), without covering any part of the laterally adjacent bones.

Wrist arthrodesis plate and method using a wrist arthrodesis plate

A screw (), in particular a bone screw, comprising a head (), a shaft () and a point (). The screw () has a recess () with a contour () on a head side (), The screw () is provided with an insertion post () in the recess (), which insertion post is connected to the screw () via a predetermined breaking point (). After breaking the predetermined breaking point and separation of the insertion post () from the screw (), a counter-contour () of a tool () can be brought into operative connection with the contour () of the recess (). The predetermined breaking point () is arranged within the recess () such that, after removal of the insertion post (), a transmission of torque is possible between the tool () and the screw () via the contour () and the counter-contour ().

Screw with insertion post

Growing community of inventors

Pfeffingen, Switzerland

Marc Ammann