Bertrand rectilinear system. Canada. 1953. Dr. Claude Bertrand, the French Canadian neurosurgeon, introduced his pneumotaxic guide in 1953 for the treatment of Parkinson's disease. It was based on the orthogonal system combined with rectolinear...
Reichert arc system. Germany. 1951. This arc-radius system used Cartesian and polar coordinates. The instrument's large base allowed the brain target to be approached from any point on the skull. Modified in 1965 by Reichert and Dr. Mundinger, the...