Patent ID: 8836176

Claim:
A medical appliance comprising: a power supply comprising: a first replaceable energy source for supplying electrical energy, a second energy source for bridging supply gaps from the first replaceable energy source, and a charging appliance which is fed from the first replaceable energy source to provide the second energy source with a state of charge, wherein the second energy source comprises a high-capacity storage element which ensures an uninterruptible power supply for the medical appliance if the first replaceable energy source fails; and wherein the medical appliance emits a warning to change the first replaceable energy source if the state of charge of the first replaceable energy source is inadequate, ceases a supply of a medicament if the second energy source approaches a discharge, switches itself off automatically if the second energy source is depleted completely, and cannot be restarted manually until the first replaceable energy source is replaced and the second energy source is charged.