Patent ID: 7922666

Claim:
A non-invasive pulse oximetry system for controlling anesthesia levels in subjects comprising: A light source adapted to be attached to an external appendage of a subject and configured to emit at least two distinct wavelengths of light directed at the appendage; and A receiver adapted to be attached to the external appendage of a subject and configured to receive the light from the light source that has been directed at the appendage and generating received signals there from, wherein the pulse oximetry system derives a plurality of physiologic parameters of the subject from the received signals, and wherein the system will signal at least one alarm when the physiologic parameters are indicative of improper anesthesia levels in the subject, and wherein the physiologic parameters derived by the system include arterial pulse distention measurements and arterial breath distention measurements and wherein at least one alarm associated with anesthesia levels is based upon a comparison of the arterial distention measurements.