A computerized system for performing a simulated medical procedure, comprises: (a) a physically simulated interventional instrument that looks and feels like an endoscope, for providing user input to a computer simulated medical angioplasty procedure; (b) a motion detector circuit to provide navigation signals representative of the movement of the physically simulated interventional instrument, the motion detector comprising a laser radiation detector, used for determining the location of the interventional instrument in a predetermined area in proximity to the detector and a laser radiation emitter used for emitting a laser beam toward the predetermined area; and (c) a movement calculation unit receiving the navigation signals from the motion detector circuit, and programmed to update the position of a corresponding software simulation of the interventional instrument. A tactile feedback mechanism may be included for providing simulated tactile feedback back to the physically simulated interventional instrument according to the calculated position of the software interventional instrument in the computer simulation.