Caduceus, the staff of the god Hermes.
In the 19th and early 20th century the Caduceus was the symbol of commerce and negotiation.
Rod of Asclepius
The caduceus is often incorrectly used as a symbol of healthcare organizations and medical practice, particularly in North America, due to confusion with the traditional medical symbol, the Rod of Asclepius, which has only one snake and is never depicted with wings.
Orrrr, North American Healthcare organizations have abandoned the medical symbol for the symbol of commerce.
