Abstract: The invention relates to an implant for supporting a vertebral column, including at least one attachment element (300) and a connecting rod. Such an attachment element (300) includes an anchoring member (13) in a vertebral body, as well as a head (14) in which a passage opening (15) is provided that is conducive to receiving a connecting rod (12), the attachment element (300) being remarkable in that it comprises a means (316) for centering said rod, said rod-centering means being mounted on a spring-back means (317) placed in said head (14), said centering means (316) and said head (14) being movable relative to each other. A connecting rod (12) capable of being inserted into a passage opening (15) of an attachment element (300) includes at least one second centering surface (19). The attachment element (300) and the connecting rod (12) engage to form an implant in which said rod is rotatably and/or translatably movable relative to the anchoring member (13).

Abstract: This intervertebral implant (17) for the human or animal body, suitable for an anterior or posterior location, comprising two relatively rigid pillars (19, 20) connected to each other only by at least two bearing portions (21, 22) able to interact with respective vertebral endplates (7) of the spine, at least one of said bearing portions (21, 22) comprising at least one relatively flexible zone allowing this bearing portion to at least partially conform to the shape of the associated vertebral endplate (7) when said implant (17) is positioned between said two endplates.

Abstract: A position-adjustment device having particular applicability for surgical instrumentation. The system comprises a body connected to an elongate member in such an arrangement as to have interchangeable locked and unlocked states. In the unlocked state, the body is free to move along the elongate member, and in the locked state the body is prevented from moving along the elongate member.

Abstract: A position-adjustment device having particular applicability for surgical instrumentation. The system comprises a body connected to an elongate member in such an arrangement as to have interchangeable locked and unlocked states. In the unlocked state, the body is free to move along the elongate member, and in the locked state the body is prevented from moving along the elongate member.

Abstract: A position-adjustment system having particular applicability for surgical instrumentation. The system comprises a body connected to an elongate member in such an arrangement as to have interchangeable locked and unlocked states. In the unlocked state, the body is free to move along the elongate member, and in the locked state the body is prevented from moving along the elongate member.

Abstract: The position-adjustment system for a surgical instrument, in particular for surgery of the spine, the system comprises an elongate member suitable for being connected to a first element of the instrument, a body suitable for being fastened to the elongate member and for being connected to a second element of the instrument, and connection means for connecting the elongate member to the body and arranged to have an unlocked state in which they allow the elongate member to slide relative to the body and a locked state in which they prevent the elongate member from sliding relative to the body.