NONINVASIVE MULTI-PARAMETER PATIENT MONITOR

• US 20120232359A1
• Filed: 05/22/2012
• Published: 09/13/2012
• Est. Priority Date: 03/01/2005
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Cercacor Laboratories
• Inventors: Al-Ali, Ammar, Kiani, Joe, Diab, Mohamed, Olsen, Greg, Wu, Roger, Fishel, Rick
• Granted Patent: US 8,626,255 B2
• Time in Patent Office: Days
• US Class Current: 600/301
• CPC Class Codes: A61B 1/00 Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes examination of body cavities or body tracts using ultrasonic, sonic or infrasonic waves A61B8/12; endoscopic instruments for taking cell samples or for biopsy A61B10/04; for surgical purposes A61B17/00; endoscopic surgical cutting instruments A61B17/32; surgical instruments using a laser beam being directed along or through a flexible conduit A61B18/22; Illuminating arrangements therefor for the eyes A61B3/00
• CPC Class Codes: A61B 2562/08 Sensors provided with means for identification, e.g. barcodes or memory chips
• CPC Class Codes: A61B 2562/085 combined with means for recording calibration data
• CPC Class Codes: A61B 2562/185 Optical shielding, e.g. baffles
• CPC Class Codes: A61B 2562/222 Electrical cables or leads therefor, e.g. coaxial cables or ribbon cables
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• 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 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/02427 Details of sensor
• CPC Class Codes: A61B 5/0261 using optical means, e.g. infrared light
• CPC Class Codes: A61B 5/0295 using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• 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 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: A61B 5/6815 Ear
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6829 Foot or ankle
• 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 5/7221 : 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 5/7278 : Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes 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: A61B 5/7475 : User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: G16H 10/40 : for data related to laboratory analysis, e.g. patient specimen analysis
• CPC Class Codes: G16H 40/67 : for remote operation
• CPC Class Codes: Y10S 439/909 : Medical use or attached to human body

Abstract

Embodiments of the present disclosure include a handheld multi-parameter patient monitor capable of determining multiple physiological parameters from the output of a light sensitive detector capable of detecting light attenuated by body tissue. For example, in an embodiment, the monitor is capable of advantageously and accurately displaying one or more of pulse rate, plethysmograph data, perfusion quality, signal confidence, and values of blood constituents in body tissue, including for example, arterial carbon monoxide saturation (“HbCO”), methemoglobin saturation (“HbMet”), total hemoglobin (“Hbt”), arterial oxygen saturation (“SpO₂”), fractional arterial oxygen saturation (“SpaO₂”), or the like. In an embodiment, the monitor advantageously includes a plurality of display modes enabling more parameter data to be displayed than the available physical display real estate.

Claims

1. A method of graphically displaying a plurality of physiological measurements on a single display, the method comprising:

obtaining a first physiological measurement;

obtaining a second physiological measurement;

displaying an indication of the first physiological measurement on a first display area;

displaying an indication of the second physiological measurement on the first display area, wherein the first display area alternates between displaying the indication of the first physiological measurement and the indication of the second physiological measurement;

automatically switching between the indication of the first physiological measurement and the indication of the second physiological measurement without human intervention when a trend of either the first physiological measurement or the second physiological measurement indicate an alarm condition.

2. The method of claim 1, wherein the first physiological measurement is one of carbon monoxide saturation, methemoglobin saturation, total hemoglobin, oxygen saturation, and fractional oxygen saturation.

3. The method of claim 1, wherein the second physiological measurement is one of carbon monoxide saturation, methemoglobin saturation, total hemoglobin, oxygen saturation, and fractional oxygen saturation.

4. The method of claim 1, further comprising switching between the indication of the first physiological measurement and the indication of the second physiological measurement based on a user activated input.

5. The method of claim 1, wherein the indication of the first physiological measurement is an indication of the trend of the first physiological measurement.

6. The method of claim 1, further comprising changing a color of the displayed indication of the physiological measurement based on a severity of the alarm condition.

7. The method of claim 1, further comprising changing a size of the indication of the first physiological measurement based on a severity of the alarm condition.

8. A physiological measurement and display system comprising:

a physiological sensor including a plurality of light emitting elements and a detector, the physiological sensor configured to measure and indication of at least two physiological parameters of a patient;

one or more processors configured to determine at least two physiological parameter measurements using the measured indication from the physiological sensor;

a display, the display including a first display area, at least a portion of each of the at least two physiological parameter measurements are alternatively displayed in the same display area, wherein the physiological parameter displayed switches from a first parameter to a second parameter when a trend of the second parameter indicates a worsening condition of the patient.

9. The system of claim 8, wherein the at least two physiological measurements comprise one or more of carbon monoxide saturation, methemoglobin saturation, total hemoglobin, oxygen saturation, and fractional oxygen saturation.

10. The system of claim 8, wherein a color of the displayed physiological parameter measurement is changed based on a severity of the worsening condition of the patient.

11. The system of claim 8, wherein a size of the displayed physiological parameter measurement is changed based on a severity of the worsening condition of the patient.

12. A physiological parameter display system capable of receiving and displaying measurements, the system comprising:

a display configured to display a plurality of indications of physiological measurements of a patient; and

at least one processor configured to alternate displaying at least two different measurement indications of physiological parameters in the same display area of the display, the at least one processor configured to switch from displaying a first measurement indication to displaying a second measurement indication when the second measurement indication indicates a worsening state of a patient under measurement.

13. The system of claim 12, wherein the plurality of indications of physiological measurements of a patient comprise one or more of carbon monoxide saturation, methemoglobin saturation, total hemoglobin, oxygen saturation, and fractional oxygen saturation.

14. The system of claim 12, wherein a color of the displayed measurement indication is changed based on a severity of the worsening condition of the patient.

15. The system of claim 12, wherein a size of the displayed measurement indication is changed based on a severity of the worsening condition of the patient.