Synchronized surgical guide
AssigneeExtremis Robotics
InventorsHugo Gerland, Anaëlle Blachon, Antonin Fontanille
Life of this patent
Estimating the term…
Abstract
The present invention relates to a surgical guide for moving a second bone portion between a pathological position and an adjusted position with respect to a first bone portion, during osteosynthesis surgery. An example surgical guide includes a securing assembly that is connected to a first guiding assembly by a coupling member configured to simultaneously move the securing assembly to modify a fixing angle and the first guiding assembly so that a displacement of the second bone portion along a transversal axis implies a modification of the fixing angle, ensuring a fixing wire can traverse both the first bone portion and the second bone portion after a displacement of the first guiding assembly.
Claims20
A surgical guide comprising:
- a body including:
- an upper extremity and a lower extremity extending in a median plane;
- a bone anchoring member to contact a first bone portion at an anchor point in a surgical plane, the surgical plane defined by the first bone portion and a second bone portion;
- and
- a securing assembly that includes a fixing wire to be inserted into the first bone portion and the second bone portion to secure the first bone portion with the second bone portion,
- wherein the second bone portion is to be moved between a pathological position and an adjusted position with respect to the first bone portion during osteosynthesis surgery,
- wherein once the second bone portion is in the adjusted position, the fixing wire is inclined at a fixing angle (β) with relation to a central axis of the first bone portion, the fixing angle (β) being measured in the surgical plane between the fixing wire and the central axis of the first bone portion, the central axis being tangential to the anchor point, and the fixing angle (β) being adjustable between a first extremal position and a second extremal position in order to set a direction of the fixing wire relative to the second bone portion;
- an adjustment member including a first guiding assembly connected to the upper extremity of the body and moveable along a transversal axis (A1) of the median plane, wherein the first guiding assembly includes a first positioning element to contact the second bone portion at a first contact site to move the second bone portion along the transversal axis (A1);
- and
- a coupling member connecting the securing assembly to the first guiding assembly, the coupling member to simultaneously move:
- (1) the securing assembly between the first extremal position and the second extremal position to modify the fixing angle (β), and (2) the first guiding assembly along the transversal axis (A1), so that a displacement of the second bone portion along the transversal axis (A1) modifies the fixing angle (β) and ensures the fixing wire can traverse both the first bone portion and the second bone portion after a displacement of the first guiding assembly.
A method to adjust bone position during osteosynthesis surgery of a patient with a first bone portion and a second bone portion, the second bone portion in a pathological position, the method comprising:
- contacting the first bone portion with a surgical guide at an anchor point in a surgical plane, the surgical plane defined by the first bone portion and the second bone portion, the surgical guide including a first guiding assembly and a securing assembly, the first guiding assembly movable along a transversal axis (A1);
- inserting a fixing wire of the securing assembly into the first bone portion and the second bone portion to secure the first bone portion with the second bone portion, the fixing wire being inclined at a fixing angle (β) with relation to a central axis of the first bone portion, the fixing angle (β) being measured in the surgical plane between the fixing wire and the central axis of the first bone portion, the central axis being tangential to the anchor point, and the fixing angle (β) being adjustable between a first extremal position and a second extremal position;
- and
- simultaneously moving:
- (1) the securing assembly between the first extremal position and the second extremal position to modify the fixing angle (β), and (2) the first guiding assembly along the transversal axis (A1) to displace the second bone portion along the transversal axis (A1),
- wherein the fixing wire traverses both the first bone portion and the second bone portion after displacement of the first guiding assembly, and
- wherein movement of the securing assembly and the first guiding assembly moves the second bone portion from the pathological position.
Dependencies are inferred from the claim text.