Retaining arm for especially medical instruments has clamping devices and connecting pipes rigid in construction and forming sealed volume filled with compression-stiff fluid, and has adjusting screw for reducing volume

摘要

The retaining arm has at least two segments (1) interconnected by ball joints (2), and a hydraulic clamping device acts upon the ball joints and has at least one hydraulic connection pipe. The clamping devices and connecting pipes are rigid and form a sealed volume filled with a compression-stiff fluid, and an adjusting screw (3) is provided for reducing the volume and for tensioning of the clamping device. The hydraulic clamping device has at least one piston acting upon the ball element (9) of the ball joint and presses it against a ball guide. An Independent claim is included for a retaining device for medical instruments, including at least one retaining arm.