Electrode assembly with a detachable distal tip

摘要

An electrode assembly including a tip electrode and a longitudinally extending axially aligned weld electrode egageably receiving a distal end of a coiled wire strand conductor at a proximal end. A connector member includes a fastener having an enlarged head and a threaded shank, the weld electrode includes an integral weld sleeve with an annular locking tab engageable with the enlarged head to prevent longitudinal movement while permitting rotational movement. The weld electrode has an internal bore for receiving an elongated stylet selectively engageable therewith for implanting and explanting the electrode assembly. The tip electrode includes an integral attachment sleeve having an outer peripheral surface extending in a direction away from the tip and having a longitudinally extending tapped bore for engagement with the threaded shank of the connector member. The weld sleeve and attachment sleeve are mutually stepped to prevent their relative rotation when in the locked position.