An electrode assembly includes a handle, holder, and electrode with an electrical conductor. The electrode is loaded into the holder with its attached conductor. The holder includes a protective cap, a resilient button with a flange, an alignment ring, two plungers each with a spring, and a retention ring. The flange and retention ring both have plural holes in registration and with posts depending from the alignment ring in order to hold the retention ring in place. Inside the button are two plungers, one on top of the other, and each with its own spring resisting downward pressure. Once the cap is removed from the button, the holder is placed against the skin of a patient, and the button is pressed, the top plunger pushes the bottom plunger against the skin of the patient and then the electrode from the protection ring, thereby ejecting the electrode.
