Rhythms of Dialogue in Early Infancy

An endoscope is provided with an inflatable, transparent bag enveloping the objective in the forward end portion and capable of being inflated by air from the control housing. The light reflected from the patient's blood through the bag into the objective and transmitted by a bundle of optical fibers to the control housing is analyzed for its content of red and infrared radiation as a measure of the oxygenation of the blood, the analysis apparatus being connected either to the eyepiece in the control housing or to a separate outlet receiving a portion of the image forming light through a beam splitter so that visual inspection of an internal organ can be performed alternatingly or simultaneously with the oximetric analysis.