Tool-holder articulated arm device for surgical instrument, has coupling head comprising axial translation immobilization unit and axial rotation immobilizing unit that is active under axial traction effect on traction cable

摘要

The device has an articulated arm (1) constituted of a joint of articulated elements (10) crossed axially by a traction cable under effect of axial traction to press the elements against each other for congealing relative positions. The arm includes a coupling head (12) of a tool holder handle (2) at its free end. The coupling head includes an axial translation immobilization unit and axial rotation immobilizing unit that is active under the axial traction effect on the cable, where the axial translation immobilization unit has a retractable rod.