Patent ID: 8896462

Claim:
An implantable medical device comprising a telemetry module with a transmitter and a receiver and an input module being connectable to at least one electrode, the input module being adapted to obtain electrophysiological and/or hemodynamical signals from the heart via the at least one electrode at a predetermined sampling frequency, the device further comprising; a storage unit for storage of the obtained electrophysiological and/or hemodynamical signals; a protocol module adapted to, at receipt of a protocol switch indication, activate and use a low power protocol for communication between said device and external units, wherein said protocol module is adapted to: select parts of stored electrophysical and/or hemodynamical signal waveforms for telemetric transmission; create communication packages having a predetermined length using said selected parts of said electrophysiological and/or hemodynamical signal waveform; instruct said transmitter to transmit said communication packages at predetermined transmission intervals; and instruct said telemetry module to power down said transmitter during intermediate periods between said transmission intervals.