Device for controlled adjustment of a surgical positioning unit

摘要

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). The invention also concerns a surgical system for alignment of surgical guide means (14, 15), comprising: —a positioning unit comprising a fixed part (11) and a mobile part (12) supporting the surgical guide means (14, 15), the position of said mobile part (12) being adjustable with respect to the fixed part (11) by screws (13), —a referencing unit for detecting the position of the positioning unit with respect to a target position of the surgical guide means, —a control unit (21) for computing the target position of screws (13), —said device (4) for adjusting the positions of the screws (13).

主权项

1. A surgical system for alignment of a surgical guide with respect to a solid, said system comprising:
a positioning unit comprising a fixed part that is fixed with respect to the solid and a mobile part supporting the surgical guide, the position of said mobile part being adjustable with respect to the fixed part by screws, each screw having a head with a unique identification feature that distinguishes it from other screws of the positioning unit a referencing unit for detecting a position of the positioning unit with respect to a target position of the surgical guide, a control unit for computing a target position of each screw suitable for positioning the surgical guide in the target position, and an adjustment device for adjusting the position of each screw, comprising:
a handle,a stem comprising a tip suited to the head of the screw, the stem being coupled to the handle by a rolling system,an actuated system for driving said stem in rotation with respect to the handle,communication means to communicate with the control unit, wherein the control unit transmits to the actuated system the number of turns to apply to the stem to reach the target position of the screw, anddetection means for identifying which screw the tip of the stem is in contact with, wherein the detection means detects the unique identification feature upon contact of the tip of the stem with the head of the screw and identifies the contacted screw based on the respective identification feature, andwherein the communication means of the device transmits identification information for said contacted screw from the detection means to the control unit.