Humidification apparatus for medical use; respiratory apparatus and instruments for medical purposes, namely, respirators and artificial respiratory apparatus; respiratory masks for artificial respiration; medical apparatus for the treatment of breathing difficulties; medical apparatus and equipment for the treatment of respiratory diseases and conditions; apparatus for the supply of medical gases, namely, breathing tubes used in the delivery of air and gases to and away from patients; insufflators; respiratory gas blending apparatus for medical use; respiratory gas mixing apparatus for medical use; medical equipment for delivering humidified air or oxygen to treat respiratory diseases and conditions; humidification chambers for medical purposes; medical humidifiers for use with respiratory therapy apparatus; medical apparatus for the diagnosis and treatment of obstructive sleep apnea; positive end-expiratory pressure (PEEP) activators being parts of medical ventilators for maintaining air or gas pressure; filters for medical ventilators; medical apparatus and instruments for continuous positive airway pressure (CPAP) therapy; humidifiers and meters for positive pressure therapy for medical use; facial masks, oral masks, nasal masks, nasal cannula, mouthpieces, nasal guards, facial guards, headgear, all being for medical purposes; catheter mounts, tracheostomy tubes, tracheal tubes, nasal tubes, tubing connectors for medical use, tubing for medical use, nasal prongs, medical apparatus in the nature of stands specially adapted for mounting medical ventilators, humidifiers and water bags; hoses adapted for use with medical ventilators, compressor modules being parts of ventilators, all being for medical purposes; water chambers, namely, fluid containers for medical use, sterile containers specifically for medical purposes, filters for medical purposes, air filters for use as parts of medical apparatus; water bags for medical purposes, namely, bags for the delivery of water, saline and other liquids; parts and fittings for the aforementioned goods