Medical apparatus for the treatment of respiratory conditions; Medical apparatus for diagnosing or treating respiratory conditions, namely, respiratory aspirators; Medical ventilators; Medical apparatus, namely, respiratory equipment and monitors therefor; Patient breathing system comprising a breathing circuit, connections to patient, ventilator, scavenger, fresh gas delivery circuit and carbon dioxide absorber; Medical devices for treating sleep disorders; Medical apparatus, namely, continuous positive airway pressure (CPAP) devices; Medical apparatus, namely, bi-level positive airway pressure (BPAP) devices; Medical apparatus, namely, continuous positive airway pressure (CPAP) and autoatic positive airway pressure (APAP) devices and parts therefor; medical equipment, namely, machines for measuring, indicating and controlling temperature, flow, volume and composition of gasses; Oxygen concentrators for medical applications; portable oxygen concentrators for medical applications; mechanical insufflation-exsufflation devices to clear secretions from the lungs by gradually applying positive pressure to the airway and rapidly shifting to negative pressure to produce a high expiratory flow from the lung, air pulsating units for medical purposes for providing pulsating positive and negative air pressure to the airway of a person to assist in loosening and eliminating mucus from the lungs and in other bodily functions; Medical insufflation/exsufflation therapy device; medical device, namely, a non-continuous ventilator to assist patients with limited expiratory flow; medical respiratory assistance apparatus and instruments for the removal of mucus; Mucus extractors; Humidification apparatus for medical purposes; Medical ventilator tubing and tubing connector; Buccal tubes;