Patent ID: 8641672

Claim:
A therapeutic fluid delivery system comprising: a pump dispensing therapeutic fluid to the body of a user, the pump including a disposable part and a reusable part connectable to the disposable part, the reusable part including one or more first transducers and one or more rechargeable batteries for storing energy to power the pump; and a recharging device configured to recharge the reusable part, the charging device including one or more second transducers for inductively transferring electrical power to the reusable part through the one or more first transducers; wherein die electrical power inductively transferred to the reusable part includes a power signal modulated based on data relating to operation of the pump, and the reusable part further includes a communication module to demodulate and determine, based on the modulated power signal from the recharging device, the data relating to the operation of the pump.