Medical device provided with sensors

A method of transmitting measurements from a medical device disposed within a body and in contact with one or more tissues of the body, the medical device comprising a plurality of variable-impedance sensors and a plurality of switches, the plurality of variable-impedance sensors being arranged in the medical device in a plurality of measurement lines, a measurement line of the plurality of measurement lines comprising at least two variable-impedance sensors of the plurality of variable impedance sensors arranged in series and each sensor of the plurality of variable-impedance sensors being associated with a switch, of the plurality of switches, to regulate a power supply to the sensor, wherein the plurality of variable-impedance sensors and the plurality of switches are selectively electrically connected between a power source of the medical device and an antenna of the medical device, the method comprising:

• emitting from the medical device, via an antenna of the medical device, measurements of impedance of the one or more tissues contacted by the medical device, wherein emitting the measurements of impedance from the medical device comprises:
• successively coupling variable-impedance sensors, of the plurality of variable-impedance sensors, between the power source and the antenna such that at a time an electrically conductive path is formed between the power source and the antenna via a variable-impedance sensor coupled between the power source and the antenna at the time and such that an impedance of the variable-impedance sensor regulates an electrical signal conveyed on the electrically conductive path, and
• at a time that a variable-impedance sensor of the plurality of variable-impedance sensors is coupled between the power source and the antenna, applying at least one electrical signal at a frequency to the body;
• wherein successively coupling the variable-impedance sensors comprises successively coupling the variable-impedance sensors in accordance with the plurality of measurement lines into which the plurality of variable-impedance sensors are arranged to successively couple all one or more variable-impedance sensors of one measurement line before successively coupling any of one or more variable-impedance sensors of another measurement line.