System for simultaing a manual interventional operation

The invention concerns a system and a method (1) for simulating a manual interventional operation by a user (2) on an object (3) with a surgical instrument. The system comprises a tool (7) for simulating the surgical instrument, comprising a manual stick (8) supporting at least two spherical markers (9, 10) rigidly connected to each others, at least one of them (9) comprising a pattern (51, 55') on its surface, a box (6) with at least one aperture (4) comprising a working volume (24) reachable with the tool through said aperture, means (25) for capturing the position and axial orientation of said markers within said working volume and deducting from them the movements, the 3D position and the 3D orientation of the tool when operated by the user within said working volume, means (16-21); for visualizing a 3D model of the surgical instrument simulated by the tool in motion inside said working volume, means (19, 20) for simulating an image corresponding to said object, and means (16, 17, 19, 20) for simulating the action of said surgical instrument operated by the user on said object.