Systems and methods for reducing nuisance alarms in medical devices

• US 9,700,218 B2
• Filed: 09/18/2015
• Issued: 07/11/2017
• Est. Priority Date: 09/29/2014
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Boyer, Robert T.
• Primary Examiner(s): RUSHING, MARK S
• Application Number:
  US14/858,827
• Publication Number:
  US 20160093205A1
• Time in Patent Office: 662 Days
• Field of Search: 340506
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 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

Abstract

A method for storing data relating to generated alarms includes receiving a physiological signal or a physiological parameter value. The method also includes generating an alarm in response to a determination that the physiological signal or physiological parameter value meets an alarm condition. Additionally, the method includes receiving a relevance indicator indicating a relevance of the generated alarm and storing the relevance indicator and the alarm condition.

Claims

1. A method, comprising:

receiving a physiological signal or a physiological parameter value;

generating an alarm in response to a determination that the physiological signal or physiological parameter value meets an alarm condition;

receiving a relevance indicator indicating a relevance of the generated alarm;

storing the relevance indicator and the alarm condition;

repeating the steps of receiving the physiological signal, generating the alarm, receiving the relevance indicator, and storing the relevance indicator to store a plurality of relevance indicators and a plurality of corresponding alarm conditions;

analyzing the plurality of relevance indicators and the plurality of corresponding alarm conditions; and

modifying at least one alarm condition of the plurality of corresponding alarm conditions based on the analyzing.

2. The method of claim 1, wherein the alarm condition comprises a physiologic threshold or range.

3. The method of claim 1, comprising assigning a relevance value or an irrelevance value to the generated alarm based on the received relevance indicator.

4. The method of claim 1, comprising storing physiologic data corresponding in time to the generated alarm.

5. The method of claim 1, wherein repeating the steps of claim 1 a predetermined number of times comprises receiving at least two different types of physiological signals or at least two different types of physiological parameter values.

6. The method of claim 1, comprising generating a histogram illustrating a distribution of relevance indicators associated with an alarm condition of the plurality of corresponding alarm conditions.

7. A method, comprising:

receiving data associated with a plurality of generated alarms, wherein each of the plurality of generated alarms is generated in response to a determination that a respective physiological parameter of a patient meets a respective alarm condition;

receiving a plurality of relevance indicators indicating a relevance of each of the plurality of generated alarms;

analyzing the data associated with the plurality of generated alarms and the plurality of relevance indicators; and

modifying at least one alarm condition of the alarm conditions based on the analysis.

8. The method of claim 7, comprising assigning a relevance value or an irrelevance value to each of the plurality of generated alarms based on respective relevance indicator.

9. The method of claim 8, comprising identifying a nuisance alarm condition having a relevance value below a predetermined minimum threshold or having an irrelevance value above a predetermined maximum threshold.

10. The method of claim 9, comprising modifying the nuisance alarm condition to increase the relevance value or to decrease the irrelevance value.

11. The method of claim 10, wherein modifying the nuisance alarm condition comprises changing a threshold value or changing a severity of the nuisance alarm condition.

12. The method of claim 10, wherein modifying the nuisance alarm condition comprises changing a threshold value as a function of a physiological parameter value.

13. The method of claim 7, comprising generating a histogram illustrating a distribution of relevance indicators associated with an alarm condition of the alarm conditions.

14. A medical device, comprising:

a signal input configured to receive a physiologic parameter value;

a processor configured to activate an alarm in response to a determination that the physiologic parameter value meets an alarm condition;

a user input configured to generate a relevance indicator indicating a relevance of the alarm; and

a memory configured to store a plurality of relevance indicators and a plurality of corresponding alarm conditions over time,

wherein the processor is configured to analyze the plurality of relevance indicators and the corresponding plurality of alarm conditions, and

wherein the processor is configured to modify at least one alarm condition of the plurality of alarm conditions based on the analysis.

15. The medical device of claim 14, wherein the user input comprises a mechanical button on the medical device.

16. The medical device of claim 14, comprising a touch-sensitive display, and wherein the user input comprises a selectable graphic displayed on the touch-sensitive display.

17. The medical device of claim 14, wherein the user input comprises first and second user inputs generating first and second relevance indicators, respectively, and wherein the first relevance indicator comprises an indication of a high relevance, and wherein the second relevance indicator comprises an indication of a low relevance.

18. The medical device of claim 14, wherein the user input comprises a numeric scale and the relevance indicator comprises a rating on the numeric scale.

19. The medical device of claim 14, wherein the processor is configured to assign a relevance value based on the relevance indicator and to identify a nuisance alarm condition in response to a determination that the relevance value is below a predetermined threshold.

20. The medical device of claim 19, wherein the processor is configured to modify the nuisance alarm condition to increase the relevance value.