Abstract: The present invention relates to a surgical navigation device, for the purpose of adjusting cutting planes to a desired position with respect to a bone of a patient, the device comprising: an adjustable guide (15) that contains several adjustable screws (1) that create contact points with the surface of the bone or cartilage such that the guide fits to the bone in a unique position calculated such that the holes and cutting blocks of the adjustable guide fit with the position planned on preoperative CT or MR images of the patient, a dedicated screwdriver (7) to adjust automatically the screws (1) to their target length, a navigation system used to check the correct position of the adjustable guide with respect to essential anatomical points and if necessary means to correct the positions of the adjustable screws.

Abstract: The invention relates to a surgical navigation device, for the purpose of adjusting a cutting plane to a desired position with respect to a bone of a patient, the device comprising: a fixed part (7) rigidly attached to the bone (18, 19), the fixed part comprising fixation means to rigidly attach a tracker thereto; a mobile part (5) adjustable with respect to the fixed part (7), including fixation means to rigidly attach a tracker thereto, and including a cutting slot (6) in which a saw blade can be inserted to perform cut; a fixed tracker (9) rigidly attached to the fixed part (7); a mobile tracker (1) attached to the mobile part (5). The invention also concerns a method for adjusting a cutting plane of a surgical device to a desired position with respect to a bone of a patient.

Abstract: The invention concerns a device for adjusting the position of a screw (13) that is able to move a part of a surgical instrument, said device (4) comprising: —a stem (41) comprising a tip (42) suited to the head (130) of the screw (13), —an actuated system (45) for driving said stem (41) in rotation, —communication means to communicate with a control unit (21), such that the control unit (21) transmits to the actuated system (45) the number of turns to apply to the stem (41) to reach the target position of the screw (13).

Abstract: In an embodiment, the methodology of the present invention is based on the use of an intraoperative navigation system and of a compact alignment guide for alignment of implant components. In an embodiment, an alignment guide of the present invention includes a first component fixable to a bone element; a second mobile component, and a third mobile component, wherein the second mobile component and two control mechanisms form a first link, wherein the two control mechanisms are working in parallel to perform adjustments in two degrees of freedom, wherein the third mobile component and three control mechanisms form a second link, wherein the three control mechanisms are working in parallel to perform adjustments in three additional degrees of freedom, and wherein the first link adjustments and the second link adjustments are performed in series to provide a total adjustment of five degrees of freedom relative to the first component.

Abstract: The present invention relates to a device for adjusting the position of a surgical instrument (1) with respect to a solid (3) tracked by a navigation system (2), wherein the instrument (1) comprises a fixed part (11) that is rigidly fixed to the solid (3) and a mobile part (12) that is attached to the fixed part by screws (13), said device (4) comprising: a stem (41) comprising a tip (42) suited to the head (130) of the screws (13), a motorized system (45) for driving said stem (41) in rotation, communication means with the navigation system (2), such that the navigation systems (2) transmits to the motorized system (45) the number of turns to apply to the stem (41) to reach the target position of each screw (13).

Abstract: A device for positioning a cutting guide with respect to a bone comprising a body forming the cutting guide or intended to be fixed to the cutting guide; a least two contact members intended to freely contact the bone; and adjustment means for individually varying the relative position of the body with respect to each contact member.