PULSE AND CONFIDENCE INDICATOR DISPLAYED PROXIMATE PLETHYSMOGRAPH

• US 20170325728A1
• Filed: 04/26/2017
• Published: 11/16/2017
• Est. Priority Date: 01/07/1999
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Al-Ali, Ammar, Breed, Divya S., Novak, Jerome J., Kiani, Massi Joe E.
• Granted Patent: US 10,130,289 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• 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 5/7207 of noise induced by motion artifacts
• CPC Class Codes: A61B 5/7214 using signal cancellation, e.g. based on input of two identical physiological sensors spaced apart, or based on two signals derived from the same sensor, for different optical wavelengths
• CPC Class Codes: A61B 5/7221 Determining signal validity, reliability or quality A61B5/7207 and A61B5/7217 take precedence
• CPC Class Codes: A61B 5/7405 using sound
• 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: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

According to some embodiments of the present invention, a display is used to show an indication of the signal'"'"'s quality. This indication of the signal'"'"'s quality may be provided in a number of ways, including audibly or visually.

Claims

1-16. -16. (canceled)

17. A method of indicating signal quality in an electronic patient monitor when a displayed plethysmograph alone may not be a sufficient visual indicator, the method comprising:

electronically receiving a sensor output signal indicative of light attenuated by pulsing blood of a patient;

determining with a signal processor plethysmographic data responsive to said sensor output signal;

determining with said signal processor a measurement of confidence that said plethysmographic data accurately reflects physiological parameters occurring in said patient;

displaying said plethysmographic data on a display of a patient monitoring device;

displaying a visual indicator in proximity to said plethysmographic data; and

modifying a color of said visual pulse indicator, said modification responsive to said measurement of confidence.

18. The method of claim 17, where said visual pulse indicator comprises a vertical bar.

19. The method of claim 18, where said modification comprises modifying a height of said vertical bar.

20. The method of claim 18, further comprising modifying an associated sound.

21. The method of claim 18, wherein said modification comprises a thickness of said vertical bar.

22. The method of claim 18, wherein the visual indicator corresponds to an occurrence of a pulse of said patient.

23. An electronic patient monitor including a signal processor communicating with a noninvasive optical sensor and a display device responsive to measurements and calculation made by said signal processor, said patient monitor configured to indicate signal quality, the monitor comprising:

a sensor signal input receiving a sensor output signal indicative of light attenuated by pulsing blood of a patient;

a signal processor receiving said sensor output signal, determining plethysmographic data responsive to said sensor output signal, determining a measurement of confidence that said plethysmographic data accurately reflects physiological parameters occurring in said patient; and

a display device displaying said plethysmographic data, displaying a visual indicator in proximity to said plethysmographic data to indicate to a caregiver which of said displayed plethysmographic data corresponds to an occurrence of a pulse of said patient, wherein a color of the visual indicator is dynamically modified responsive to said measurement of confidence.

24. The monitor of claim 23, where said visual indicator comprises a vertical bar coinciding with the peak of arterial pulsations in said plethysmographic data.

25. The monitor of claim 24, where said modification comprises modifying a height of said vertical bar.

28. The monitor of claim 24, wherein an associated sound with the occurrence of the pulse is modified responsive to the measurement of confidence.

29. The monitor of claim 24, wherein a thickness of the vertical bar is modified.