Synthes Usa, LLC

Ao Technology Ag

Ronald Schwyn

Robert Frigg

Norbert Suhm

Daniel Schmucki

Stefano Brianza

Markus Haenni

Silvio Koller

Surgical instrument () comprising a longitudinal shaft () with a tip portion (), a rear portion () and a longitudinal axis () and rotatable in the clock-wise and in the counter-clockwise direction around the longitudinal axis (), said surgical instrument () further comprising: A) first means () for drilling a hole in a bone by rotation of the shaft () in one of the two directions; B) second means () for crushing bone tissue when the shaft () rotates in the other of the two directions; and C) a torque sensor () coupled to the shaft (). Method for measuring the local mechanical resistance of a porous body comprising the steps of: a) drilling a hole to a desired depth into a porous body by advancing and rotating the shaft () in a first sense of rotation, preferably clockwise so that said first means () are active; b) hammering the shaft () gently further into the porous body as far as the tip portion () of the shaft () has reached a desired measuring position; and c) performing the torque measurement by rotating the shaft () in the opposite second sense of rotation, preferably counter-clockwise so that said second means () are active.

Surgical instrument

Method and device for determining the local mechanical resistance inside of a porous body having a variable density and/or porosity, in particular inside of a porous bone structure comprising the following steps:

Method and device for measuring the local mechanical resistance of a porous body

The invention relates to a joint for movably connecting two stabilizing elements. The joint includes at least two joint segments, which can be rotated relative to each other. Each joint segment is connected to a respective stabilizing element. The joint can be releasably locked by locking means, and the locking means can be locked and/or unlocked by a fluid that is supplied and/or discharged via conduits.

Joint for movably connecting two stabilizing elements

This invention concerns a device for attaching fractured hip-joint heads. The device has an angular plate which includes a bone plate attachable to the femur and a sleeve extending at an angle from the bone plate. The device also includes an anchor bolt having a shaft insertable into the sleeve and a threaded part extending from the shaft and having a multi-pitch thread.

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Davos Glaris, Switzerland

Ronald Schwyn