Medical apparatus and devices and their parts, namely, ventilators; patient ventilation devices; respiratory therapy devices; inhalation devices; anesthesia machines, apparatus and instruments for assisting, maintaining and checking breathing; apparatus for the purpose of supplying oxygen for breathing; apparatus for resuscitation; apparatus for treating problems with coughing; cough therapy devices; insufflation-exsufflation devices used to clear secretions from the lungs by applying positive pressure to the airway and shifting to negative pressure to produce a high expiratory flow from the lungs; insufflation-exsufflation devices; cough assisting devices and parts and components of all the aforesaid goods