Abstract: A self-anchoring helical wire structure electrode for energy conduction to or from a tissue target in a body, made of at least one wire rope consisting of biocompatible and conductive wire, and enclosing a hollow core within an inner diameter and having a longitudinal axis, an outer diameter and two ends, being flexible for self-bending in any direction up to 180 degrees on said longitudinal axis, and secured by being capable of self-forming a bunching anchor wider than the insertion channel when injected while its dispenser is substantially stationary.