Microscope-based Assistance System

Project Description

A lot of diagnose and treatment systems, all requiring much space, are used in today's operating theaters. In this context, the microscope is a very important device. At the moment, all these instruments have specified application fields, which can't be combined.

HI-R1000 Microscope of Möller-Wedel

In cooperation with the companies Möller-Wedel and IBG Technology the HI-R1000 microscope produced by Möller-Wedel was motorised completely to support the surgeon. Now the positioning can be carried out with a remote control which is fastened to one of the instruments without interrupting the work flow of the surgeon. The remote control offers different modes with which often appearing movements can be done automatically. This encloses the pivotation around the current focus point to look at objects from another point of view, movements of the objective parallel to the current image plane to have a look at objects slightly out of sight, as well as corrections of the working distance and the zoom.

The remote control communicates with an external PC using Bluetooth. The PC determines the coordinates of the target position and calculates the positions of all joints. The corresponding parameters are sent to the microscope using a serial interface.

However, the microscope can also be positioned manually. This makes sense for movements with large amplitude which have to be carried out fast but inexactly. Moreover, this offers another security aspect, because by the manual control all motor movements are interrupted immediately.

Remote control with integrated bluetooth
Positioning of the remote control on a potential instrument used in surgery
Presenting additional information

It is also possible to display preoperative data in the actual microscope view with a special mirror system. The MRT- and X-ray-images shall be presented at the correct position and the origional size. On top of this, tissue and vessel structures will be calculated from these images and will help the surgeon to navigate.

Integration of Optical coherence tomography

Optical coherence tomography (OCT) is a relatively new method, which can be used for diagnosis by the surgeon. An OCT system will be integrated in the motorized microscope and can be positioned automatically.


Contact Person

Achim Schweikard
Bldg 64 / Room 97 +49 451 31015200

Floris Ernst
Bldg 64 / Room 95 +49 451 31015208

Former project members
  • Dr.-Ing. Markus Finke


Markus Finke, Birgit Stender, Ralf Bruder, Alexander Schlaefer and Achim Schweikard, An experimental comparison of control devices for automatic movements of a surgical microscope, in: Proceedings of the 24th International Conference and Exhibition on Computer Assisted Radiology and Surgery (CARS'10), Geneva, Switzerland, pages 311-312, 2010
Markus Finke and Achim Schweikard, Motorization of a Surgical Microscope for intra-operative navigation and intuitive control (2010), in: International Journal of Medical Robotics and Computer Assisted Surgery, 6:3(269-280)


Markus Finke and Achim Schweikard, 3D Simulation of a motorized operation microscope, in: {International Conference on SIMULATION, MODELING and PROGRAMMING for AUTONOMOUS ROBOTS (SIMPAR 2008)}, Venice, Italy, pages 258--369, Springer-Verlag Berlin Heidelberg, 2008
Markus Finke, Ralf Bruder and Achim Schweikard, Intraoperative Fernsteuerung eines Operationsmikroskopes, in: {7. Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirugie (CURAC 2008)}, Leipzig, Deutschland, pages 31--34, 2008
Markus Finke, Ralf Bruder and Achim Schweikard, Kinematics of a Robotized Operation Microscope, in: {34th Annual Conference of the IEEE Industrial Electronics Society (IECON)}, Orlanda, Florida, USA, pages 1638--1643, 2008