Abstract: The present invention relates to a surgical instrument (10) comprising a cannula (20) comprising a conduit (30), said conduit (30) comprising an inlet orifice (40) and an outlet orifice (50), said cannula (30) having a longitudinal axis L. Said instrument (10) further comprises first (60) and second (90) distraction rods comprising respectively first and second intermediate portions (65, 95) with longitudinal axes L1 and L2. The first and second distraction rods (60, 90) are pivotally mounted respectively about the longitudinal axes L1 and L2 and comprise respectively a first distal part (62) and a second distal part (92) configured so that the pivoting of the first and second distraction rods (60, 90) about their respective longitudinal axes L1 and L2 causes the displacement of first and second distal parts (62, 92) closer to or away from each other.

Abstract: An implantable device including an intervertebral wedge including an upper bearing zone and a lower bearing zone and at least one first lateral spring having a position A relative to the intervertebral wedge in a position for inserting the implantable device and a position B relative to the intervertebral wedge in a position for implanting the implantable device, the positions A and B being different and the first lateral spring being configured: to freely translate from position A to position B and to form a retention component arranged relative to the intervertebral wedge to block the migration of the intervertebral wedge toward the spinal canal in position B.