Abstract: Sequential, continuous delivery of separate intravenous fluid mixtures is facilitated by a float operated valve which automatically re-starts flow from a primary solution when the selected volume of secondary fluid has been infused. The float is contained in a calibrated volumetric chamber with a drug injection port, and valved connections to primary and secondary solutions. Selected volumes of primary or secondary solution can be added to the chamber and mixed with drugs inserted through the injection port.Fluid in the calibrated chamber raises a float which closes a valve and stops fluid flow from the primary solution source. Fluid from within the chamber flows to the patient until very little fluid remains in the chamber and the float moves downward causing the valve to the primary solution to open allowing a continuous flow of intravenous fluid to the patient.

Abstract: A disposable esophageal probe incorporating the capability to detect ECG waveforms, heart sounds and to measure body core temperature is described. The probe incorporates a plastic tube with electrically conductive pathways embedded in its side walls thereby eliminating any lumen obstruction. Its distal end is enclosed by a rubber sheath which provides a diaphragm for the transmission of sounds into the lumen of the tube. An integral disposable connector assembly is provided at its proximal end to enable direct connection to be made to the plastic pathways and the lumen. A modification of the probe which allows it to monitor respiration rate is also described.

Abstract: A disposable esophageal probe incorporating the capability to detect ECG waveforms, heart sounds and to measure body core temperature is described. The probe incorporates a plastic tube with electrically conductive pathways embedded in its side walls thereby eliminating any lumen obstruction. Its distal end is enclosed by a rubber sheath which provides a diaphragm for the transmission of sounds into the lumen of the tube. An integral disposable connector assembly is provided at its proximal end to enable direct connection to be made to the plastic pathways and the lumen. A modification of the probe which allows it to monitor respiration rate is also described.