Abstract: A method of delivering oxygen to a biological entity comprising of dissolving oxygen into a perfusate and forcing the perfusate through the biological entity whereby substantially high levels of oxygen are available to satisfy the biological demand of the biological entity. An apparatus for supplying oxygen to a biological entity whereby substantially high levels of oxygen are available to satisfy the metabolic demand of said biological entity. An apparatus for supplying metabolic supplements to a biological entity whereby the effect of said metabolic supplement on said biological entity can be monitored. The method and apparatus keeps a biological entity such as an organ viable at a range of temperatures while in an aerobic state. This allows the study of said organ from a physiological or experimental standpoint. It allows said organ to be transplanted with little or no reperfusion injury, thus increased survivability over the prior art.

Abstract: Utilization of a standard, portable oxygen tank and regulator in an emergency respiratory system including an endotracheal adaptor in fluid communication with the regulator and having a first, flexible tube insertable in the windpipe of a patient undergoing emergency treatment, and a second flexible, manually-operable tube attached to the adaptor in opposed relation to the first tube and compressible to direct the oxygen flowing between the regulator and adaptor into the patient's lungs by way of the first tube.