Buy Pre-Owned Anesthesia from Ardus Medical, Inc. Since 1994, Ardus Medical has supplied hospitals and alternate site healthcare organizations worldwide with high quality refurbished Anesthesia at a savings of 30-80% versus the cost of new. All products are shipped to you patient-ready with up to a one year warranty, and are tested by factory-trained technicians in accordance with manufacturer specifications. Call today and save on your Datex Ohmeda, Drager or GE anesthetic machine!