Synthes Ag Chur

Ao-entwicklungsinstitut Davos

Pietro Regazzoni

Markus Hehli

Peter Messmer

Norbert Suhm

Paul Muller

Paul M&uuml;ller

Urs Bopp

Silvio Koller

A device to be used in combination with a surgical navigation system for defining the position of a straight line determined by an operating surgeon within a three-dimensional coordinate system in an operating theater. The devices includes a body () with a surface () and at least three markers () which emit waves () and the position of which can be determined within a three-dimensional coordinate system by a position detector belonging to the surgical navigation system. A laser () mounted on the body () emits a laser beam (), directed away from the body (), which has a geometrical central beam () and a wavelength in the visible range. The laser beam () is emitted in a geometrically defined position relative to the markers () so that the position of the central beam () relative to the three-dimensional coordinate system can be calculated from the previously measured positions of the markers () by a computer, which is also part of the surgical navigation system.

Laser pointer

A device for moving an X-ray apparatus embodied in the form of a C-bow ( ) in a controlled manner, the C-bow ( ) being mounted on a pedestal ( ) provided with motor-driven rollers ( ) controllable in their direction of travel in such a way that it is displaceable in parallel in relation to at least two axes ( ) and rotatable relative to three axes ( ), each movement of the C-bow ( ) with respect to a coordinate system ( ) which is stationary relative to the room being carried out via controllable drive devices ( ). These drive devices ( ) are controlled either by means of a control device ( ) or via a computer ( ), said control device being operated either via a sterile control console or by voice control. Any positions and projections of the C-bow ( ) that have once been adjusted may be stored in the computer ( ), so that a desired position and projection may be reproduced again. If the C-bow is combined with a surgical navigation system which comprises a position detector ( ), it is possible, by measuring a reference base that is applied to a patient ( ) and is provided with optical markers ( ), to consider changes in the position of the patient ( ) in such a way that an adjusted position and projection of the C-bow ( ) can be reproduced after the patient ( ) has changed position.

Device for moving a medical apparatus in a controlled manner

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Basel, Switzerland

Pietro Regazzoni