Ear plugs for swimming; Electric sputum aspirators; Electrical hearing aids; Electrocardiographic (ECG) recorders and electrocardiographic (ECG) digital plasters sold as a unit; Humidification apparatus for medical purposes; Inhalers for medical purposes, sold empty; Medical apparatus, namely, continuous positive airway pressure (CPAP) devices; Nasal irrigators, electric; Nebulizers for respiration therapy; Oxygen inhalators for medical use, sold empty; Oxygen masks for medical purposes; Resp...