A steerable micro-endoscope comprising a cylindrical elongated member having at least a first lumen, a tensioning wire running in the first lumen and attached at the distal end of the elongated member；the elongated member having a proximal portion and a distal portion, having respectively a first durometer and a second durometer lower than the first durometer； the first lumen being arranged such that the distal portion of the elongated body bends when the tensioning wire is pulled；wherein the elongated member comprises a second lumen； an electrode wire being arranged in the second lumen such that the distal end of the electrode wire does not protrude from the distal portion of the elongated member when the elongated member is not bent, and such that the distal end of the electrode wire protrudes from the distal portion of the elongated member when the elongated member is bent.
