Driving assembly for a cutting tool of the shaver type

A nucleotomy device for producing a nuclear space in an intervertebral disc, using a transosseous approach in the body of a vertebra, the nucleotomy device comprising:

• an electric rotary driving motor with an output shaft;
• a tool holder provided with
• i) a blade cutting tool that produces the nuclear space in the intervertebral disc, said blade cutting tool being comprised of
• a) a double blade knife made from an elastic material, the double blade knife being comprised of a base and two, spaced apart blades extending from the base,
• b) a flexible metal rod enclosed in a plastic protective sheath, the flexible metal rod having a first end and an opposite, second end,
• c) a flexible link that links the first end of the flexible metal rod to the base of the knife,
• d) a linking element, and
• e) a connection ring,
• ii) a driving means connected, via the linking element, to the second end of the metal rod,
• the driving means imparting rotational and longitudinal translational movements to the cutting tool,
• iii) a first connection means that accepts and fastens to the output shaft of the electric rotary driving motor, and
• iv) a second connection means that accepts the blade cutting tool, wherein the connection ring cooperates with the second connection means to immobilize said cutting tool on said tool holder;
• and an injection and suction means that evacuate debris from the produced nuclear space in the intervertebral disc.