ALARM SUSPEND SYSTEM

• US 20120232366A1
• Filed: 05/21/2012
• Published: 09/13/2012
• Est. Priority Date: 07/29/2008
• Status: Active Grant

• Current Assignee: Masimo Corporation
• Original Assignee: Masimo Corporation
• Inventors: Kiani, Massi Joe E., Cebada, Steve L., Olsen, Gregory A.
• Granted Patent: US 8,547,209 B2
• Time in Patent Office: Days
• US Class Current: 600/324
• CPC Class Codes: A61B 2560/0276 Determining malfunction
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips
• 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: G08B 25/001 Alarm cancelling procedures or alarm forwarding decisions, e.g. based on absence of alarm confirmation
• CPC Class Codes: G08B 25/01 characterised by the transmission medium
• CPC Class Codes: G08B 5/22 using electric transmission; using electromagnetic transmission

Abstract

An alarm suspend system utilizes an alarm trigger responsive to physiological parameters and corresponding limits on those parameters. The parameters are associated with both fast and slow treatment times corresponding to length of time it takes for a person to respond to medical treatment for out-of-limit parameter measurements. Audible and visual alarms respond to the alarm trigger. An alarm silence button is pressed to silence the audible alarm for a predetermined suspend time. The audible alarm is activated after the suspend time has lapsed. Longer suspend times are associated with slow treatment parameters and shorter suspend times are associated with fast treatment parameters.

Claims

1. A noninvasive optical based physiological measurement system comprising:

a plurality of light emitting diodes configured to transmit a plurality of wavelengths of light onto a tissue site of a patient;

at least one detector configured to measure an indication of the plurality of wavelengths of light after attenuation by tissue of the patient and output a signal indicative of the attenuated light;

one or more processors configured to receive the detector output signal and to determine a plurality of different physiological measurements, the one or more processors further configured to determine if an alarm threshold has been met and activate an alarm;

a speaker associated with the one or more processors, the speaker configured to generate an audible signal in response to the alarm activated by the one or more processors; and

a silence button associated with the one or more processors;

wherein, when the alarm is activated for at least one of the plurality of different physiological measurements and the silence button is activated by a user, the one or more processors deactivate the alarm for a period of time, the period of time being different for each different physiological measurement of the plurality of different physiological measurements.

2. The noninvasive optical based physiological measurement system of claim 1, wherein the physiological measurements comprise one or more of oxygen saturation, pulse rate, carboxyhemoglobin, methemoglobin and total hemoglobin.

3. The noninvasive optical based physiological measurement system of claim 1, wherein the period of time is related to an expected course of treatment for the activated alarm.

4. An alarm suspend method comprising:

measuring a plurality of physiological parameters using a patient monitoring device including a processor;

triggering an audible alarm if at least one parameter is outside of predetermined limits;

suspending the audible alarm in response to a silence request;

associating a duration with each of the plurality of physiological parameters, wherein at least a first duration associated with a first physiological parameter is different than a second duration associated with a second physiological parameter; and

reactivating the audible alarm after the duration associated with the at least one parameter outside the predetermined limits has passed.

5. The alarm suspend method according to claim 4 further comprising setting the duration to correspond with a range of treatment times associated with the at least one parameter outside the predetermined limits has passed.

6. The alarm suspend method according to claim 4 further comprising overriding the suspended audible alarm if the triggering parameter has greater than a predetermined unit change before the duration has passed.

7. The alarm suspend method according to claim 4 wherein at least one duration is about two minutes.

8. The alarm suspend method according to claim 4 wherein at least one duration duration is about fifteen minutes.

9. The alarm suspend method according to claim 4 further comprising:

constructing a pop-up window for a monitor display; and

selecting the duration from a range of durations presented within the pop-up window.

10. The alarm suspend method according to claim 4 further comprising triggering the audible alarm if no parameters are found during measuring.

11. The alarm suspend method according to claim 4, wherein the plurality of physiological parameters are measured using multiple wavelength sensing.

12. The alarm suspend method according to claim 6, wherein the predetermined unit change is adjustable for each physiological parameter.

13. A physiological measurement system comprising:

a sensor configured to attach to a patient so as to transmit optical radiation into a tissue site and generate a sensor signal responsive to the optical radiation after attenuation by pulsatile blood flow within the tissue site;

a monitor in communications with the sensor so as to measure a plurality of physiological parameters responsive to the sensor signal;

a display mounted on the monitor that displays the measured parameters along with visual alarms associated with the measured parameters;

a speaker mounted on the monitor that generates an audible alarm triggered by at least one of the parameters;

a silence button mounted on the monitor that, when actuated, initiates a silence request for the monitor to suspend the audible alarm; and

an alarm suspend system that deactivates the audible alarm for a parameter specific duration according to the alarm-triggering parameter.

14. The physiological measurement system according to claim 13 wherein the alarm suspend system comprises:

a first group of parameters associated with a short duration;

a second group of parameters associated with a long duration;

the first group and the second group partitioned according to a fast treatment time and a short treatment time associated with the parameters.

15. The physiological measurement system according to claim 13 further comprising an override that reactivates the audible alarm if the triggered parameter changes more than a predetermine amount during the corresponding duration.

16. The physiological measurement system according to claim 14 wherein the first group comprises parameters related to the measurement of normal hemoglobin and the second group comprises parameters related to the measurement of abnormal hemoglobin.

17. The physiological measurement system according to claim 14 wherein the long duration is greater than about 120 seconds.

18. The physiological measurement system according to claim 14 wherein the short duration is less than or equal to about 120 seconds.

19. The physiological measurement system according to claim 14 further comprising a pop-up window for the display that allows selection of the long duration and the short duration in response to the silence button.

20. The physiological measurement system according to claim 14 further comprising:

a third group of parameters associated with a high priority;

a fourth group of parameters associated with a low priority;

the third group and the fourth group partitioned according to a high medical priority and a low medical priority associated with the parameters; and

wherein the visual alarms associated with the third group are displayed when both the visual alarms associated with the third group and the fourth group are to be displayed.