THE INVENTION RELATES TO A DEVICE FOR MOVING TISSUE, PARTICULARLY BONE TISSUE, INSIDE THE BODY, SAID DEVICE INCLUDING A FIRST PART REFERRED TO AS A REFERENCE PART (C1) A SECOND PART, REFERRED TO AS A CONVEYING PART (C2), WHICH IS SLID ABLY MOUNTED RELATIVE TO THE REFERENCE PART (C1) A THREADED ROD PIVOTABLY MOUNTED RELATIVE TO THE REFERENCE PART (C1) A CONTROL SHAFT DRIVING MEANS CONNECTING THE CONTROL SHAFT TO THE THREADED ROD A CONNECTING NUT BETWEEN THE CONVEYING PART (C2) AND THE THREADED ROD, SAID CONNECTING NUT BEING MOUNTED ONTO THE THREADED ROD AND ROTATABLY GUIDED RELATIVE TO THE REFERENCE PART (C1) AND MEANS FOR CONVERTING THE MOVEMENT OF THE CONNECTING NUT ALONG THE THREADED ROD INTO A MOVEMENT OF THE CONVEYING PART (C2) RELATIVE TO THE REFERENCE PART (C1). SAID DEVICE IS SUCH THAT, IN ORDER TO LIMIT THE LONGITUDINAL TRANSLATION OF SAID THREADED ROD RELATIVE TO THE REFERENCE PART (C1), A FIRST ABUTMENT (C11) AND A SECOND ABUTMENT (C12) RIGIDLY CONNECTED TO THE THREADED ROD ENGAGE WITH A FIRST BEARING (A11) AND A SECOND BEARING (A12), RESPECTIVELY, SAID BEARINGS BEING RIGIDLY CONNECTED TO THE REFERENCE PART (C1) AND PLACED AT A DISTANCE FROM EACH OTHER ALONG THE THREADED ROD BETWEEN SAID ABUTMENTS (C11, C12), THE CONNECTING NUT BEING MOVABLE ALONG THE THREADED ROD BETWEEN THE FIRST BEARING (A11) AND THE SECOND BEARING (A12).
