10 APPARATUS AND INSTRUMENTS FOR USE AS MEDICAL EQUIPMENT, NAMELY, MEDICAL RESPIRATORY PATIENT INTERFACE DEVICES FOR THE DELIVERY OF RESPIRATORY THERAPY, [ MEDICAL RESPIRATORY NASAL PRONGS, NASAL CANULAE, NASAL PILLOWS, AND NASAL SEALS, ] MEDICAL RESPIRATORY MASKS, MEDICAL RESPIRATORY NASAL MASKS, [ MEDICAL RESPIRATORY NOSE AND MOUTH MASKS, MASK CUSHIONS, GEL CUSHIONS, MASK FRAMES, HEADGEAR ASSEMBLIES, HEADGEAR CLIPS, HEADGEAR STRAPS, ACCESS PORT PLUGS, ELBOW ASSEMBLIES, AIR TUBING, AIRTUBING CONNECTORS, EXHALATION SYSTEMS COMPRISING ACTIVE RESPIRATORS FOR ARTIFICIAL RESPIRATION, PASSIVE RESPIRATORS FOR ARTIFICIAL RESPIRATION, RESPIRATOR VALVES, PORTS FOR RESPIRATORS, AND POSITIVE END-EXPIRATORY PRESSURE VALVES, AIR FILTER ASSEMBLIES, FITTING TEMPLATES, MECHANICAL VENTILATORS, CONTINUOUS POSITIVE AIRWAY PRESSURE FLOW GENERATORS, AUTOMATIC POSITIVE AIRWAY PRESSURE FLOW GENERATORS, BI-LEVEL FLOW GENERATORS, AUTOMATICALLY TITRATING CONTINUOUS POSITIVE AIRWAY PRESSURE FLOW GENERATORS, ADAPTIVE SERVO VENTILATORS, HUMIDIFIERS,POLYSOMNOGRAPHY, PULSOXIMETERS, OXYGEN CONCENTRATORS EQUIPMENT AND STRUCTURAL PARTS THEREFOR; MEDICAL INSTRUMENTS, APPARATUS AND DEVICES, PARTICULARLY DIAGNOSTIC DEVICES, INHALATION, ANESTHESIA AND BREATHING APPARATUS, NAMELY, RESPIRATORS FOR ARTIFICIAL RESPIRATION, MEDICAL MOUTH MASKS, NOSE MASKS, FULL FACE MASKS FOR RESPIRATORS, DIAGNOSTIC SENSORS FOR NASAL MASKS, PUMPS FOR MEDICAL RESPIRATORS, FEEDBACK CONTROLLERS FOR MEDICAL RESPIRATORS, MECHANICAL VENTILATORS, NON-INVASIVE POSITIVE PRESSURE VENTILATORS, HUMIDIFIERS, CONTROL CIRCUITS FOR MECHANICAL RESPIRATORS AND MECHANICAL VENTILATORS, POLYSOMNOGRAPHY, PULSOXIMETERS, OXYGEN CONCENTRATORS AND STRUCTURAL PARTS THEREFOR; BREATHING MONITORS USED TO SCREEN PATIENTS FOR SLEEP DISORDERED BREATHING OR OTHER BREATHING DISORDERS; DIAGNOSTIC AND THERAPEUTIC DEVICES USED IN THE FIELD OF PNEUMOLOGY, NAMELY, RESUSCITATORS, IRON LUNGS, INHALATORS; INHALATION THERAPY PRODUCTS, NAMELY, OXYGEN MASKS AND TUBING, NASAL CANULA AND NEBULIZERS, MEDICAL BLOOD GAS AND PULSE RATE MONITORS, CAPNOGRAPH AND PULSOXIMETERS; THERAPEUTIC BREATHING APPARATUS USED TO CREATE POSITIVE AIRWAYS PRESSURE; STRUCTURAL PARTS FOR THE AFOREMENTIONED GOODS; ELECTRICAL AND/OR ELECTRONIC DEVICES, APPARATUS AND INSTRUMENTS FOR MEDICAL PURPOSES, NAMELY, MECHANICAL VENTILATORS; MEDICAL EQUIPMENT FOR THE SCREENING, DIAGNOSIS AND TREATMENT OF SLEEP DISORDERED BREATHING, NAMELY, CONTINUOUS POSITIVE AIRWAY PRESSURE FLOW GENERATORS, BI-LEVEL FLOW GENERATORS, AUTOMATICALLY TITRATING CONTINUOUS POSITIVE AIRWAY PRESSURE FLOW GENERATORS, ADAPTIVE SERVO VENTILATORS, PULSOXIMETERS, OXYGEN CONCENTRATORS, POLYSOMNOGRAPHY, RECORDING DEVICES FOR ELECTROENCEPHALOGRAPHS, ELECTRO-OLFACTOGRAM, ELECTROMYOGRAM, ELECTROCARDIOGRAPHS; AND STRUCTURAL PARTS THEREFOR ]