OPTICAL PATIENT MONITOR

• US 20180206795A1
• Filed: 01/31/2018
• Published: 07/26/2018
• Est. Priority Date: 12/22/2006
• Status: Abandoned Application

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Al-Ali, Ammar
• Application Number:
  US15/885,444
• Publication Number:
  US 20180206795A1
• Time in Patent Office: Days
• CPC Class Codes: A61B 2560/0285 Apparatus for single use
• CPC Class Codes: A61B 2560/0443 Modular apparatus
• CPC Class Codes: A61B 2562/222 Electrical cables or leads therefor, e.g. coaxial cables or ribbon cables
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• 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 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/082 Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath A61B5/083, A61B5/091 take precedence
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14539 for measuring pH
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/412 Detecting or monitoring sepsis
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61B 5/6826 : Finger
• CPC Class Codes: A61B 5/6832 : using adhesives A61B5/259 takes precedence
• CPC Class Codes: A61B 5/6838 : Clamps or clips
• CPC Class Codes: A61B 5/6843 : Monitoring or controlling sensor contact pressure
• CPC Class Codes: A61B 5/7221 : Determining signal validity, reliability or quality A61B5/7207 and A61B5/7217 take precedence
• CPC Class Codes: A61B 5/7246 : using correlation, e.g. template matching or determination of similarity
• CPC Class Codes: A61B 5/7275 : Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• 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 5/7405 : using sound
• CPC Class Codes: A61B 5/742 : using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 5/746 : Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: G16H 40/63 : for local operation
• CPC Class Codes: G16H 50/30 : for calculating health indices; for individual health risk assessment

Abstract

An optical based patient monitoring system employing an optical sensor and providing an indication of an optical change which does not correlate to a change in a physiological blood parameter and based on that indication, providing a care provider an indication of a condition of a patient. The optical based patient monitoring system providing the indication of the patient condition in relation to a patient using an IV setup.

Claims

1. A system which uses a light emitter and an optical detector to determine a condition of a patient and electronically transmit an audio or visual indication to alert a care provider about the condition of the patient, the system comprising:

a first disposable adhesive attachment component, utilizing an adhesive attachment mechanism, configured to attach to a measurement site of the patient;

a reusable component including a light emitter and a light detector, the reusable component configured to attach to the first disposable adhesive attachment component, the reusable component configured to emit at least a plurality of wavelengths of light into a portion of the patient'"'"'s body and detect the emitted light reflected from the patient;

a processor configured to monitor a characteristic of the patient to determine the condition of the patient, the processor configured to process the detected light to determine a change in a magnitude of the detected light which does not correlate to a change in a physiological blood parameter, wherein based on the processing, the processor also determines if the condition affecting the patient should be communicated to a healthcare provider; and

a display device configured to communicating the condition affecting the patient to a care provider using either an audio or visual indication.

2. The system of claim 1, wherein the condition is one of a probe off condition, change or presence of a therapeutic drug or perfusion condition.

3. The system of claim 1, wherein the condition is a movement of the reusable component from the measurement site to a second different measurement site.

4. The system of claim 1, wherein the change in the magnitude of the detected light which does not correlate to a change in a physiological blood parameter is a movement of the reusable component from the measurement site to a second different measurement site.

5. The system of claim 1, wherein the system is configured to be used in conjunction with an IV setup and the processor is configured to monitor the characteristic of the patient related to an infusion of the IV setup.

6. A system which electronically transmits a signal indicative of a patient condition from a measurement location to a processing device, the system comprising:

a first disposable adhesive attachment component, utilizing an adhesive attachment mechanism, configured to attach to a measurement site of the patient;

a reusable component including a light emitter and a light detector, the reusable component configured to attach to the first disposable adhesive attachment component, the reusable component configured to emit at least a plurality of wavelengths of light into a portion of the patient'"'"'s body and receive the emitted light reflected from the patient;

a cable configured to transmit the signal from the patient measurement site to a patient monitor

the patient monitor including a processor configured to process an indication of the detected light to determine a change in the normalized magnitudes of the detected light which does not correlate to a change in a physiological blood parameter to determine the patient condition.

7. The system of claim 6, wherein the condition is a probe off condition.

8. The system of claim 6, wherein the condition is change or presence of a therapeutic drug.

9. The system of claim 6, wherein the condition is a perfusion condition.

10. The system of claim 6, wherein the condition is a movement of the reusable component from the measurement site to a second measurement site.

11. The system of claim 6, wherein the system is configured to be used in conjunction with an IV setup and the processor is configured to determine the patient condition responsive to an infusion of the IV setup.

12. The system of claim 6, wherein the blood parameter is methemoglobin.

13. The system of claim 6, wherein processor is further configured to prevent an alarm condition where the processed indication of the detected light to determine a change in the normalized magnitudes of the detected light which does not correlate to a change in a physiological blood parameter indicates that a change in a measurement of a physiological blood parameter is not due to an actual physiological change in the blood.

14. A method of detecting a change in light absorption characteristics at a measurement site of a patient, the change being unrelated to a physiological blood parameter of a patient, the method comprising:

providing a first disposable adhesive attachment component, the first disposable adhesive attachment component having an adhesive attachment mechanism and configured to attach to a measurement site of a patient;

providing a second reusable component configured to couple to the first disposable adhesive attachment component, the reusable component configured to emit at least a plurality of wavelengths of light into a portion of the patient'"'"'s body and receive the emitted light reflected from the patient; and

determining, using a hardware processor a condition affecting the patient based on the received light reflected from the patient;

determining, using the hardware processor that a change in light absorption has occurred that is not related to a change in a composition of arterial blood of the patient;

providing an indication alerting a care provider of a condition of a patient.

15. The method of claim 14, wherein the condition is a probe off condition.

16. The method of claim 14, wherein the condition is a change or presence of a therapeutic drug.

17. The method of claim 14, wherein the condition is a perfusion condition.

18. The method of claim 14, wherein the condition is a movement of the reusable component from the measurement site to a second measurement site.

19. The method of claim 14, wherein the condition is responsive to an infusion of the IV setup.

20. A system which uses a light emitter and an optical detector to determine a condition of a patient and electronically transmit an audio or visual indication to alert a care provider about the condition of the patient, the system comprising:

a first disposable adhesive attachment component, utilizing an adhesive attachment mechanism, configured to attach to a measurement site of the patient;

a reusable component including a light emitter and a light detector, the reusable component configured to attach to the first disposable adhesive attachment component, the reusable component configured to emit at least a plurality of wavelengths of light into a portion of the patient'"'"'s body and detect the emitted light reflected from the patient;

a processor configured to monitor a characteristic of the patient to determine the condition of the patient, the processor configured to process the detected light to determine a change in a magnitude of the detected light which does not correlate to a change in a physiological blood parameter; and

a display device configured to communicate the condition affecting the patient to a care provider using either an audio or visual indication.

21. The system of claim 20, wherein the condition a probe off condition.

22. The system of claim 20, wherein the condition is a presence of a therapeutic drug.

23. The system of claim 20, wherein the condition a perfusion condition.

24. The system of claim 20, wherein the condition is a movement of the reusable component from the measurement site to a second different measurement site.

25. The system of claim 20, wherein the change in the magnitude of the detected light which does not correlate to a change in a physiological blood parameter is a movement of the reusable component from the measurement site to a second different measurement site.

26. The system of claim 20, wherein the system is configured to be used in conjunction with an IV setup and the processor is configured to monitor the characteristic of the patient related to an infusion of the IV setup.