Abstract: The present invention relates to a system (100) for determining that an electromagnetic disturbance is impairing measurements made by an electromagnetic tracking unit (200) during a surgery, the system comprising the electromagnetic tracking unit (200) configured to track relative poses of at least two bone portions linked to one another by at least one joint, based on measurements of an electromagnetic field emitted and received, respectively, by at least two electromagnetic transducers (201, 202) of the electromagnetic tracking unit (200), at least one storage unit (301) in which at least one kinematic pattern of authorized relative displacements of the tracked bone portions with respect to one another is recorded, and one data processor (302) in communication with the storage unit (301) and with the electromagnetic tracking unit (200), wherein the data processor (302) is configured to receive the tracked relative poses of the bone portions with respect to one another and compute a real-time kinem

Abstract: A tag equipped with markers and, notably, optical markers that also include an electronic label that is adhered and that transmits the relative positions of the tags, or other characteristics of the tags, to a measuring system using telecommunication. Confusion between various tags can thus be avoided, and a greater interaction between the measuring system and the tag can be obtained.

Abstract: A device for controlling a continuous movement of an object with symmetry of revolution (1) comprises a conveyor (5) having two parallel guides, (6) and at least one pair of belts (8) stretched on the guides, between and on which these objects move at the level of the guides. These belts form an angle (11) between a top track and a lower track of each of the belts. The belts in the pair have the same direction of rotation around the guides, the same value of the measured angle (11) from the upper track to the lower track, and the same displacement speed. Preferably, the pair of belts consists of a single folded belt.

Abstract: This invention relates to a device for controlling a continuous movement of an object with symmetry of revolution (1) comprising a conveyor (5), characterized in that the conveyor comprises two parallel guides (6) and at least one pair of belts (8) stretched on the guides, between and on which these objects move at the level of the guides, these belts forming an angle (11) between a top track and a lower track of each of the belts, the belts in the pair having the same direction of rotation around the guides, the same value of the measured angle (11) from the upper track to the lower track, and the same displacement speed. Preferably, the pair of belts consists of a single folded belt.