Physiological monitor

• US 8,721,541 B2
• Filed: 01/18/2013
• Issued: 05/13/2014
• Est. Priority Date: 06/03/1998
• Status: Expired due to Fees

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Al-Ali, Ammar, Diab, Mohamed K., Kiani, Massi E., Kopotic, Robert James, Tobler, David
• Primary Examiner(s): Winakur, Eric
• Assistant Examiner(s): BERHANU, ETSUB D
• Application Number:
  US13/745,590
• Publication Number:
  US 20130197330A1
• Time in Patent Office: 480 Days
• Field of Search: 600/300, 600/310, 600/323, 600/324
• US Class Current: 600/300
• 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 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/6814 Head
• CPC Class Codes: A61B 5/6815 Ear
• CPC Class Codes: A61B 5/6819 Nose
• CPC Class Codes: A61B 5/6825 Hand
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6829 Foot or ankle
• CPC Class Codes: A61B 5/6838 Clamps or clips
• 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: A61M 16/00 Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes stimulating the respiratory movement by mechanical, pneumatic or electrical means, iron lungs combined with gas breathing means A61H31/00
• CPC Class Codes: A61M 16/021 operated by electrical means A61M16/202 – A61M16/205 take precedence
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)

Abstract

A patient monitor has multiple sensors adapted to attach to tissue sites of a living subject. The sensors generate sensor signals that are responsive to at least two wavelengths of optical radiation after attenuation by pulsatile blood within the tissue sites.

Claims

1. A patient monitor capable of measuring at least two physiological parameters, the patient monitor comprising:

a processor configured to receive sensor data and determine a measured value of a first physiological parameter and a measured value of a second physiological parameter of body tissue of a monitored patient,

wherein the processor is further configured to cause a display to display the measured value of the first physiological parameter in a common portion of the display or display the measured value of the second physiological parameter in the common portion of the display, and

wherein the processor further causes the common portion of the display to change to displaying, at least, the other of the measured values based on an occurrence of a triggering event.

2. The patient monitor of claim 1, wherein the triggering event comprises an alarm condition.

3. The patient monitor of claim 1, wherein the common portion of the display is configured to display the first physiological parameter and the second physiological parameter after the occurrence of the triggering event.

4. The patient monitor of claim 1, wherein activation of a user input causes the common display area to change from displaying one of the measured values of the first or second physiological parameter to displaying the other of the measured value of the first or second physiological parameter.

5. The patient monitor of claim 1, wherein the common display area is configured to default to displaying one of the measured values of the first or second physiological parameters.

6. The patient monitor of claim 1, wherein the measured value of the first physiological parameter comprises an indication of arterial oxygen saturation.

7. The patient monitor of claim 1, wherein the measured value of the first physiological parameter comprises an indication of venous oxygen saturation.

8. The patient monitor of claim 1, wherein the measured value of the first physiological parameter comprises a plethysmograph.

9. The patient monitor of claim 1, wherein an aspect of the display changes based on the occurrence of the triggering event, wherein the aspect that changes comprises the positioning of the first or second physiological parameter within the common portion of the display.

10. A method of displaying two physiological parameter measurements using a display location of a display of a patient monitoring device, the method comprising:

using a processor, receiving sensor data and determining a measured value of a first physiological parameter and a measured value of a second physiological parameter of body tissue of a monitored patient;

displaying the measured value of the first physiological parameter in a display location of an electronic display; and

changing the display of the measured value of the first physiological parameter to display, at least, the measured value of the second physiological parameter in the display location when a change in the measurement of the second physiological parameter causes a triggering event.

11. The method of claim 10, wherein the triggering event comprises an alarm condition.

12. The method of claim 10, wherein the measured value of the first physiological parameter comprises a noninvasively measured value.

13. The method of claim 10, wherein the measured value of the first physiological parameter comprises an indication of oxygen saturation.

14. A patient monitor capable of determining a plurality of physiological parameters from an output signal of a light sensitive detector capable of detecting light attenuated by body tissue, the patient monitor comprising:

a processor configured to cause a display to display a measured value of a first blood parameter of body tissue of a monitored patient or display a measured value of a second blood parameter of the body tissue; and

a user input button, the activation of which causes the display to change from displaying the measured value of the first blood parameter to displaying, at least, the measured value of the second blood parameter, wherein the display is also configured to change from displaying the measured value of the first blood parameter to displaying, at least, the measured value of the second blood parameter when the second blood parameter passes an alarm threshold,

wherein the measured values of the first and second blood parameters are determined by the processor using an output signal of a noninvasive light sensitive detector capable of detecting light attenuated by the body tissue.

15. The patient monitor of claim 14 wherein the display shifts a positioning of the display of the second blood parameter with respect to a positioning of the display of the first blood parameter.

16. The patient monitor of claim 14, further comprising an alarm corresponding to either of the measured values of the first and second blood parameters.

17. The patient monitor of claim 14, wherein the first blood parameter comprises oxygen saturation.