Medicrea International

Safe Orthopaedics

Stephane Fuentes

Dominique Petit

Constant Delahaye

Richard Meyrat

Gianluca Maestretti

The invention concerns an implantation assembly comprising a bone-anchoring element comprising a threaded rod provided at one of its ends with a head and an instrument for driving the bone-anchoring element, said instrument comprising a drive spindle removably premounted on the bone-anchoring element.

Implantation assembly comprising a drive instrument pre-fitted on a bone implant

The anchor member () includes an anchoring base () having a peripheral proximal wall () that inwardly delimits a proximal cavity, and a proximal stud () including a distal articulation portion () received in the proximal cavity, the proximal wall () including a peripheral proximal rim () ensuring retention of the distal articulation portion () in that proximal cavity. According to the invention, the distal articulation portion () has a peripheral edge dimensioned to come into the immediate vicinity of the inner surface of the proximal wall (), and has a convex distal surface () whereof the apex is situated substantially at the axis of the proximal stud (); and the anchor member () includes an elastically deformable element () placed in the bottom of said proximal cavity, having a curved shape whereof the apex is situated substantially at the axis of the proximal cavity, the surface () bearing against this element (), and the latter being permanently elastically deformed such that it continuously presses the portion () against the rim ().

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Marseilles, France

Stephane Fuentes