Documentation Documents on this page are in English. If you would like resources in a different language, please click here. Circuit support arm fact sheet Keep exploring What is non-invasive and invasive ventilation therapy? Learn how non-invasive ventilation (NIV) or invasive ventilation (IV) could help you to breathe more easily. Explore Respiratory diseases & conditions Learn about other respiratory diseases such as OHS, neuromuscular and restrictive lung diseases and invasive or non-invasive ventilation treatments at home or in the hospital. Explore What happens during normal breathing? Understand what could be affecting your ability to breathe properly, it’s helpful to know what normal breathing looks like. Explore Related products Astral mobility bags Designed to allow mobile use of the Astral ventilator Read more Astral external battery An external lithium-ion battery intended for hospital and home use with the Astral series of ventilators Read more Homecare stand A portable, space-saving solution for the hospital or home that protects against everyday hazards with added mobility and convenience Read more