OPTICAL-BASED PHYSIOLOGICAL MONITORING SYSTEM

• US 20180214031A1
• Filed: 11/02/2017
• Published: 08/02/2018
• Est. Priority Date: 09/17/2009
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Kiani, Massi Joe E., O'Reilly, Michael
• Granted Patent: US 10,398,320 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/4821 Determining level or depth of anaesthesia A61B5/1106 takes precedence
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A61B 5/743 Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots

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 determine, based on the sensor signal, a first physiological parameter indicative of a level of pain of the patient.

Claims

1. (canceled)

2. A physiological monitoring method comprising:

receiving, from a non-invasive optical sensor, a first sensor signal responsive to physiological characteristics of a patient;

receiving, from a bio-potential sensor, a second sensor signal responsive to physiological characteristics of the patient;

receiving, from an additional sensor, at least a third sensor signal;

determining, by a processor and based on the first sensor signal, a first physiological parameter indicative of a level of pain of the patient;

determining, by the processor and based on the second sensor signal, a second physiological parameter indicative of a depth of consciousness of the patient;

determining, by the processor and 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 indicative of at least one of the level of pain of the patient or the depth of consciousness of the patient, wherein the plurality of additional physiological parameters include at least one of;

an ECG, a respiration rate, a respiratory air flow, a heart rate, or a blood pressure; and

determining, by the processor and based on the first physiological parameter, the second physiological parameter, and the one or more additional physiological parameters, a combined index indicative of both the level of pain and the depth of consciousness of the patient.

3. The physiological monitoring method of claim 2, wherein the first physiological parameter comprises a perfusion index.

4. The physiological monitoring method of claim 3, wherein the second physiological parameter comprises an EEG.

5. The physiological monitoring method of claim 4, wherein the combined index is further determined based on and ECG of the patient.

6. The physiological monitoring method of claim 5, wherein the ECG is further indicative of the level of pain of the patient.

7. The physiological monitoring method of claim 6 further comprising:

determining, by the processor and based on the first physiological parameter and the ECG of the patient, a combined indication of the level of pain of the patient.

8. The physiological monitoring method 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.

9. The physiological monitoring method of claim 2 further comprising:

outputting 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 indicative of both the level of pain and the depth of consciousness of the patient.

10. The physiological monitoring method of claim 2 further comprising:

providing, by the processor, 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 indicative of both the level of pain and the depth of consciousness of the patient.

11. The physiological monitoring method of claim 2 further comprising:

generating, by the processor, a displayable output including a visual indication of the combined index indicative of both the level of pain and the depth of consciousness of the patient.

12. The physiological monitoring method of claim 11, wherein the visual indication comprises at least one of a number, a color, or a graph.