Abstract: An apparatus and method for withdrawing cryogenic liquid from a vessel is disclosed. The apparatus includes a tube for withdrawing the cryogenic liquid from the vessel, a heating coil for gasifying the liquid that is withdrawn, and a heat exchanger, consisting of an inner and outer tube, that is connected to the heating coil and immersed in the cryogenic liquid. In operation, cryogenic liquid is withdrawn through the withdrawal tube and passed through the heating coil, where it is vaporized. The vapor that is produced passes through the outer tube of the heat exchanger, giving up heat to the cryogenic liquid in the vessel to thereby gasify a portion of it, to maintain head pressure within the vessel. The vapor then passes through the inner tube of the heat exchanger, and exits the apparatus.

Abstract: A single piece molded plastic instrumentation holding bridge for holding instrumentation and probes to be used with a patient laying on a stretcher is disclosed. The bridge includes depending legs which have recesses for engagement with arms mounted on the stretcher, and a surface formed by said legs which allows the bridge to be placed on the ground wherein the top surface of the bridge is at an oblique angle with respect to a horizontal plane. This invention provides a convenient and secure means for holding instrumentation on a stretcher while a patient is moved. Instrumentation may be either patient monitoring equipment, or life support equipment for the patient.