Optical-based physiological monitoring system

Abstract

A non-invasive, optical-based physiological monitoring system is disclosed. In an embodiment, the non-invasive, optical-based physiological monitoring system comprises an emitter configured to emit light into a tissue site of a living patient; a detector configured to detect the emitted light after attenuation by the tissue site and output a sensor signal responsive to the detected light; and a processor configured to determine, based on the sensor signal, a first physiological parameter indicative of a level of pain of the patient.

1 . (canceled) 
     
     
         2 . A physiological monitoring system comprising:
 one or more processors configured to:
 receive, from a non-invasive optical sensor, a first sensor signal responsive to physiological characteristics of a patient; 
 receive, from a bio-potential sensor, a second sensor signal responsive to physiological characteristics of the patient; 
 receive, from an additional sensor, at least a third sensor signal; 
 determine, based on the first sensor signal, a first physiological parameter; 
 determine, based on the second sensor signal, a second physiological parameter; 
 determine, based on at least one of the first sensor signal, the second sensor signal, or the third sensor signal, one or more additional physiological parameters; and 
 determine, based on the first physiological parameter, the second physiological parameter, and the one or more additional physiological parameters, a combined index indicative of at least a level of pain of the patient. 
   
     
     
         3 . The physiological monitoring system of  claim 2 , wherein the first physiological parameter comprises at least one of: perfusion index, plethysmograph variability index, heart rate, blood pressure, or oxygen saturation. 
     
     
         4 . The physiological monitoring system of  claim 3 , wherein the first physiological parameter is indicative of the level of pain of the patient. 
     
     
         5 . The physiological monitoring system of  claim 2 , wherein the second physiological parameter comprises at least one of: EEG, ECG, or heart rate. 
     
     
         6 . The physiological monitoring system of  claim 5 , wherein the second physiological parameter is indicative of at least one of: the level of pain of the patient, or a depth of consciousness of the patient. 
     
     
         7 . The physiological monitoring system of  claim 2 , wherein the one or more additional physiological parameters comprise at least one of: ECG, respiration rate, respiratory air flow, heart rate, or blood pressure. 
     
     
         8 . The physiological monitoring system of  claim 7 , wherein the one or more additional physiological parameters are indicative of at least one of: the level of pain of the patient, or a depth of consciousness of the patient. 
     
     
         9 . The physiological monitoring system of  claim 2 , wherein the combined index is further indicative of at least a depth of consciousness of the patient. 
     
     
         10 . The physiological monitoring system of  claim 2 , wherein at least one of the second physiological parameter or the one or more additional physiological parameters comprises ECG. 
     
     
         11 . The physiological monitoring system of  claim 10 , wherein the ECG is indicative of the level of pain of the patient. 
     
     
         12 . The physiological monitoring system of  claim 11 , wherein the one or more processors are further configured to:
 determine, based on the first physiological parameter and the ECG of the patient, a combined indication of the level of pain of the patient.   
     
     
         13 . The physiological monitoring system of  claim 2 , wherein the non-invasive optical sensor, the bio-potential sensor, and the additional sensor are in communication with a monitor via a single cable. 
     
     
         14 . The physiological monitoring system of  claim 13  further comprising:
 the non-invasive optical sensor comprising:
 an emitter configured to emit light into tissue of the patient; and 
 a detector configured to detect the emitted light after attenuation by the tissue and output the first sensor signal responsive to the detected light; 
 
 the bio-potential sensor configured to be attached to the patient and configured to output at least the second sensor signal; and 
 the additional sensor configured to be attached to the patient and configured to output at least the third sensor signal. 
 
     
     
         15 . The physiological monitoring system of  claim 2 , wherein the one or more processors are further configured to:
 output feedback to a drug administrator configured to provide a pharmacological agent to the patient, wherein the feedback is outputted to the drug administrator so as to regulate administration of the pharmacological agent for a desired effect, wherein the feedback includes the combined index.   
     
     
         16 . The physiological monitoring system of  claim 2 , wherein the one or more processors are further configured to:
 provide a control output to at least one of drug-infusion equipment or medical gas ventilation equipment based at least in part on the combined index.   
     
     
         17 . The physiological monitoring system of  claim 2 , wherein the one or more processors are further configured to:
 generate a displayable output including a visual indication of the combined index.   
     
     
         18 . The physiological monitoring system of  claim 17 , wherein the visual indication comprises at least one of: a number, a color, or a graph.