Manometric Ventricular Trocar

—A New Shunting Apparatus with Intraventricular Fluid Pressure Monitoring—

Abstract

The authors describe a newly developed ventricular trocar that allows accurate intraventricular pressure measurement at the time of shunt emplacement. This device assures correct positioning of the ventricular tube and enhances safety on insertion. In slit ventricle syndrome, for example, the use of this trocar provides exact diagnosis on the basis of pressure monitoring and facilitates insertion of the tube.