A medical system capable of giving different treatments in a row to a patient comprises a first treatment apparatus, a second treatment apparatus, an operation unit, a memory, a communication unit and a selection switch. The secondary latch includes a sleeve that extends around the housing body and that can slide forward and rearward thereon, and a wedge part that is wedged between a lower surface of the handle and a top surface of the housing body. Conductive material is formed proximate at least some of the interior wall portion. An identifier is identified for an author of the piece of content.