GALVANIC THERAPEUTIC APPLIANCES; ULTRASONIC MEDICAL DIAGNOSTIC APPARATUS; DIALYZERS; MEDICAL APPARATUS AND INSTRUMENTS FOR MONITORING VITAL SIGNS, BLOOD PROPERTIES AND RESPIRATORY EVENTS; MEDICAL APPARATUS AND INSTRUMENTS, NAMELY, VENTILATORS AND ANESTHESIA MACHINES FOR USE IN PATIENT CARE; APPARATUS AND INSTALLATIONS FOR THE PRODUCTION OF X-RAYS, FOR MEDICAL PURPOSES