Extracorporeal membrane oxygenation (ECMO) is a special procedure that uses an artificial heart-lung machine to take over the work of the lungs (and sometimes also the heart).

Leos J. Zeman has written:

'Key medical membrance devices in the late 1990s' -- subject(s): Membrances, Artificial, Therapeutic use, Market surveys, Membrane industry, Artificial Membrances

An artificial anus is an artificial opening of the intestine.

A dialysis machine, or other dialysis process, replaces kidney function by filtering nitrogenous wastes from the blood. This exchange works across a special artificial membrane.

No it is not artificial