Artificial organ a stationary power supply or other stationary resources such as filters or chemical processing units. (Periodic rapid recharging of batteries, refilling of chemicals, and/or cleaning/replacing of filters would exclude a device from being called an artificial organ.) Thus, a dialysis machine, while a very successful and critically important life support device that almost completely replaces the duties of a kidney, is not an artificial organ. Constructing and installing artificial organs, an extremely research-intensive and expensive process initially, may entail many years of ongoing maintenance services not needed by a natural organ.: The use of any artificial organ by humans is
Juxtaoral organ of Chievitz a topographical point of view – as "Juxtaoral organ" by Zenker and Salzer 1962. The results of the studies of Zenker and his group on this organ as well as the history of research are summarised in the monograph "Juxtaoral Organ: Morphology and Clinical aspects", Urban&Schwarzenberg 1982. It can very rarely be the site of a tumor. It was first noted in embryos by Johan Henrik Chievitz in 1885. Juxtaoral organ of Chievitz The juxtaoral organ in humans is a small longish structure (10–14 mm in length, 1–2 mm in diameter), situated medially to the medial pterygoid muscle. The organ