System and Method for Automatic Detection of a Plurality of SP02 Time Series Pattern Types

• US 20100234705A1
• Filed: 05/10/2010
• Published: 09/16/2010
• Est. Priority Date: 01/27/1997
• Status: Abandoned Application

• Current Assignee: Lawrence A. Lynn
• Original Assignee: Lawrence A. Lynn
• Inventors: Lynn, Lawrence A.
• Application Number:
  US12/777,171
• Publication Number:
  US 20100234705A1
• Time in Patent Office: Days
• US Class Current: 600/324
• 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 5/0836 Measuring rate of CO2 production
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/0871 Peak expiratory flowmeters
• 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 5/7257 using Fourier transforms
• CPC Class Codes: A61B 5/726 using Wavelet transforms
• CPC Class Codes: A61B 5/7267 involving training the classification device
• 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 5/746 Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: A61B 7/003 Detecting lung or respiration noise
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/026 specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
• CPC Class Codes: A61M 16/085 Gas sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0042 : in the expiratory circuit
• CPC Class Codes: A61M 2205/50 : with microprocessors or computers
• CPC Class Codes: A61M 2205/502 : User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/8206 : battery-operated
• CPC Class Codes: A61M 2230/205 : partial oxygen pressure (P-O2)
• CPC Class Codes: A61M 2230/432 : partial CO2 pressure (P-CO2)
• 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
• CPC Class Codes: G16H 50/70 : for mining of medical data, e.g. analysing previous cases of other patients

Abstract

The disclosed embodiments relate to a patient monitor for evaluating a patient. The patient monitor may comprise a sensor that is adapted to detect a sound associated with breathing of the patient and to produce a first output indicative of the sound, an oximeter that is adapted to receive an input from the patient and to produce a second output indicative of oxygen saturation of blood of the patient, and a processor adapted to receive at least the first output and the second output and to correlate the first output with the second output.

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 a plurality of cluster pattern types of SPO2, and to produce an output indicative of a plurality of detected cluster pattern types.

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 on a processor of a monitor;

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 on a processor of a monitor;

detecting a plurality of cluster pattern types of SPO2; and

producing an output indicative of a plurality of detected cluster pattern types.

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 on a processor of a monitor;

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

producing an output indicative of a detected cluster pattern type.