Diagnostic apparatus for medical purposes; apparatus for use in medical analysis; medical apparatus and instruments; surgical apparatus and instruments; brain pacemakers; heart pacemakers; testing apparatus for medical purposes; electrodes for medical use; heart rate monitoring apparatus; artificial surgical implants; inflation devices for balloon catheters; balloon catheters; heart rate monitor; heartbeat measuring equipment; intracardiac catheters; electrodes for external defibrillator; defibrillators; medical apparatus and instruments relating to neurovegetative reactivity; cardiac defibrillation electrodes; wearable monitors used to measure biometric data for medical use; dental apparatus and instruments; dynamic electrocardiogram monitors; cushions for medical purposes; babies' bottles; condoms; implants (artificial materials); cardiac valves for surgical prostheses; artificial cardiac valves; surgical implants comprised of artificial materials; orthopaedic articles; suture materials; medical diagnostic apparatus for cardiovascular disease; medical diagnostic apparatus for vascular disease; medical diagnostic apparatus for arrhythmia; medical diagnostic apparatus for measuring physiological parameters in organs; computerized medical recording and analysis apparatus for the diagnosis and treatment of arrhythmias; medical instruments to measure blood pressure, cardiac output and other physiological and cardiovascular parameters; medical instruments for recording heart activity; medical analyzers for cardiovascular disease; medical analyzers for vascular disease; medical analyzers for arrhythmia; medical analyzers for measuring physiological parameters in organs; medical apparatus and instruments for treating heart failure disease; heart stimulators for treating heart failure disease; heart stimulators for treating arrhythmia; artificial cardiac shunts; implantable sensors for sensing parameters of cardiac activity; medical implants comprised of artificial materials; intravascular catheter; subcutaneous catheter; medical electrodes; medical leads; apparatus for testing cardiac function; apparatus for testing blood vessel function; surgical apparatus and instruments for dental use; orthopedic joint implants made of artificial materials.