There is a concern that a mechanical switch could be switched OFF due to movement of a body in which the switch is embedded. If the switch is switched OFF after being embedded, it is difficult to switch the switch back ON. Provided is a fluid delivery device that is used by being embedded within a body, including a fluid delivery mechanism for discharging fluid from a reservoir that contains the fluid to outside of the reservoir a sending and receiving section that sends and receives information relating to control of the fluid delivery mechanism to and from an external apparatus a power supply section that supplies power to at least one of the fluid delivery device and the sending and receiving section and a mechanical switch that is capable of changing a supply path of the power only from a cutoff state to a conductive state.
