Medical instruments; Telemetry devices for medical applications; Apparatus for the electrical stimulation of groups of muscles; Defibrillators; Cardiac defibrillation electrodes; Electrophysiology electrodes; Electrodes for picking up electrophysiological parameters; Electrodes for picking up biological parameters; Electronic muscle stimulators for medical use; Apparatus for cardiac defibrillation; Heart pacemakers; Implantable pacemakers; Implantable leads for cardiac pacing; Cardiovascular ...