System and method for automatic detection of a plurality of SPO2 time series pattern types

• US 20060149144A1
• Filed: 02/10/2006
• Published: 07/06/2006
• Est. Priority Date: 01/27/1997
• Status: Active Grant

• Current Assignee: Lawrence A. Lynn
• Original Assignee: Lawrence A. Lynn
• Inventors: Lynn, Eric N., Lynn, Lawrence A.
• Granted Patent: US 9,042,952 B2
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 5/00 Measuring for diagnostic purposes radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00; Identification of persons
• 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 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/412 Detecting or monitoring sepsis
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61B 5/726 using Wavelet transforms
• 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 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 7/003 Detecting lung or respiration noise
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment

Abstract

The disclosed embodiments relate to pulse oximetry. An exemplary pulse oximeter comprises a probe that is adapted to be attached to a body part of a patient to create a signal indicative of an oxygen saturation of blood of the patient, and a processor that is adapted to receive the signal produced by the probe, to calculate an SPO2 value based on the signal, to detect a plurality of pattern types of SPO2 indicative of pathophysiologic events, and to produce an output indicative of a detected one of the plurality of pattern types.

Claims

1. A pulse oximeter, comprising:

a probe that is adapted to be attached to a body part of a patient to create a signal indicative of an oxygen saturation of blood of the patient; and

a processor that is adapted to receive the signal produced by the probe, to calculate an SPO2 value based on the signal, to detect a plurality of pattern types of SPO2 indicative of pathophysiologic events, and to produce an output indicative of a detected one of the plurality of pattern types.

2. The pulse oximeter recited in claim 1, comprising a display that is adapted to provide a visual indication corresponding to the output.

3. The pulse oximeter recited in claim 2, wherein the visual indication comprises a text message.

4. The pulse oximeter recited in claim 1, wherein at least one of the plurality of pattern types is indicative of a recovery failure.

5. The pulse oximeter recited in claim 1, wherein at least one of the plurality of pattern types is indicative of a threshold failure.

6. A pulse oximeter, comprising:

a probe that is adapted to be attached to a body part of a patient to create a signal indicative of an oxygen saturation of blood of the patient; and

a processor that is adapted to receive the signal produced by the probe, to calculate an SPO2 value based on the signal, to detect at least one cluster pattern type of SPO2, and to produce an output indicative of a detected cluster pattern type.

7. The pulse oximeter recited in claim 6, comprising a display that is adapted to provide a visual indication corresponding to the output.

8. The pulse oximeter recited in claim 7, wherein the visual indication comprises a text message.

9. The pulse oximeter recited in claim 6, wherein the at least one cluster pattern type is indicative of a recovery failure.

10. The pulse oximeter recited in claim 6, wherein the at least one of the plurality of pattern types is indicative of a threshold failure.

11. The pulse oximeter recited in claim 6 wherein the processor is adapted to calculate a plurality of sequential severity indices of the at least one cluster pattern type.

12. The pulse oximeter recited in claim 6, wherein the processor is adapted to calculate a time series of severity indices of the at least one cluster pattern type.

13. A pulse oximeter, comprising:

a probe that is adapted to be attached to a body part of a patient to create a signal indicative of an oxygen saturation of blood of the patient; and

a processor that is adapted to receive the signal produced by the probe, to calculate an SPO2 value based on the signal, to detect a plurality of different cluster pattern types of SPO2, and to produce an output indicative of a detected cluster pattern type.

14. The pulse oximeter recited in claim 13, comprising a display that is adapted to provide a visual indication corresponding to the output.

15. The pulse oximeter recited in claim 14, wherein the visual indication comprises a text message.

16. The pulse oximeter recited in claim 13, wherein at least one of the plurality of cluster pattern types is indicative of a recovery failure.

17. The pulse oximeter recited in claim 13, wherein at least one of the plurality of cluster pattern types is indicative of a threshold failure.

18. The pulse oximeter recited in claim 13 wherein the processor is adapted to calculate a plurality of sequential severity indices of at least one of the plurality of cluster pattern types.

19. The pulse oximeter recited in claim 13, wherein the processor is adapted to calculate a time series of severity indices of at least one of the plurality of cluster pattern types.

20. The pulse oximeter recited in claim 13, wherein the processor is adapted to determine an indication of severity of the detected cluster pattern type.

21. The pulse oximeter recited in claim 13, wherein the processor is adapted to display an indication of severity of the detected cluster pattern type.

22. The pulse oximeter recited in claim 13, wherein the processor is adapted to calculate a plurality of sequential severity indices of the detected cluster pattern type.

23. The pulse oximeter recited in claim 13, wherein the processor is adapted to calculate a time series of severity indices of the detected cluster pattern type.

24. A method of monitoring a patient, comprising:

receiving a signal indicative of an oxygen saturation of blood of the patient;

calculating an SPO2 value based on the signal;

detecting a plurality of pattern types of SPO2 indicative of pathophysiologic events; and

producing an output indicative of a detected one of the plurality of pattern types.

25. A method of monitoring a patient, comprising:

receiving a signal indicative of an oxygen saturation of blood of the patient;

calculating an SPO2 value based on the signal;

detecting at least one cluster pattern type of SPO2; and

producing an output indicative of a detected cluster pattern type.

26. A method of monitoring a patient, comprising:

receiving a signal indicative of an oxygen saturation of blood of the patient;

calculating an SPO2 value based on the signal;

detecting a plurality of different cluster pattern types of SPO2; and

producing an output indicative of a detected cluster pattern type.