Patent ID: 7972339

Claim:
An injector device for percutaneously injecting biomaterial in the form of particles of different sizes or of a paste, said device comprising: a trocar of generally cylindrical shape presenting an open first end with a sharp edge for drilling bone walls, a wall of said first end having lateral orifices for passing the biomaterial, and a second end that is likewise open; a reservoir for receiving said biomaterial, said reservoir comprising a part of substantially cylindrical shape having two open ends, said cylindrical part being capable of being inserted at least in a portion of the trocar via the second end thereof and having an inside diameter that is substantially constant over its entire length; removable means for totally closing both ends of the reservoir; and a piston insertable in said cylindrical part when said closure means are removed, said piston being capable of sliding in said cylindrical part over the entire length thereof and in the first end of the trocar; wherein an outside face of the first end of the trocar includes at least one blade extending parallel to the axis of the trocar.