A double cylinder system is disclosed, comprising at least one controller being adapted to transmit hydraulic control signals; at least one slave being in fluid communication with the controller and being configured to respond to the hydraulic control signals transmitted by the controller; and at least one control line providing hydraulic communication between the controller and the slave. Also disclosed is a surgical device, comprising at least one controller located at a proximal end of the device, the controller being adapted to transmit hydraulic control signals; at least one manipulator, the manipulator being configured to be controlled by a human hand and to actuate the controller; at least one slave located at a distal end of the device, the slave being in fluid communication with the controller and being configured to respond to the hydraulic control signals transmitted by the controller; and at least one control line providing hydraulic communication between the controller and the slave.