Artificial lung, requirements

For example, packaging films for groceries should let through very little oxygen. Conversely, a very high oxygen permeability is required for the use of membranes as artificial lungs. 

Facial and neck injuries may predispose the victim to airway and ventilatory difficulty. Airway compromise may result if the patient with facial fractures remains in a supine position due to lack of bony support. Progressive airway obstruction may also result from hemorrhage from penetrating neck wounds. Bleeding into the trachea, bronchus, and lungs will all compromise the victim s airway and ventilatory status. An artificial airway should be placed to maintain airway patency until intubation is required (American College of Sur-... 

Heparin, an anticoagulant which is widely used for blood flowing through artificial organs, is a mucopolysaccharide that is obtained from the liver or lung of animals. It is also possible to prevent blood clotting in vitro by the addition of oxalic acid or citric acid these combine with the Ca2 + ions that are required in clotting... 

The area of artificial Internal organs includes the heart, lungs, liver, kidneys, pancreas, blood vessels and the gastrointestinal tract. In addition to the obvious requirements of blood and tissue compatibility, these replacements often have highly specialized functions which are almost impossible to duplicate with man-made materials. Nevertheless, it is often necessary to augment or replace the function of these organs. 

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