Medical devices alerting user about potential interruption of wireless patient data transfer

• US 8,676,312 B2
• Filed: 10/28/2011
• Issued: 03/18/2014
• Est. Priority Date: 05/19/2011
• Status: Active Grant

• Current Assignee: Physio-Control Incorporated (Stryker Corporation)
• Original Assignee: Physio-Control Incorporated (Stryker Corporation)
• Inventors: Daynes, John Carlton, Daynes, Nathan Woodruff
• Primary Examiner(s): Bertram, Eric D.
• Application Number:
  US13/284,610
• Publication Number:
  US 20120296384A1
• Time in Patent Office: 872 Days
• Field of Search: 607 5- 8, 607/31, 607/32, 607/59, 607/60
• US Class Current: 607/5
• CPC Class Codes: A61B 2505/01 Emergency care
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/0024 for multiple sensor units attached to the patient, e.g. using a body or personal area network
• CPC Class Codes: A61B 5/333 Recording apparatus specially adapted therefor
• CPC Class Codes: A61N 1/3993 User interfaces for automatic external defibrillators
• CPC Class Codes: G16H 20/30 relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Abstract

An external defibrillator can receive wirelessly a data signal transmitted by a transmitting device over a communication link. The defibrillator can include a processor configured to monitor a reception parameter of the communication link while the data signal is being received and to set an alert flag if the processor determines from the reception parameter that reception of the data signal may be discontinued prematurely. The defibrillator can also include a user interface capable of outputting an alerting user notification responsive to the alert flag being set.

Claims

1. An external defibrillator for defibrillating a person, and for receiving resuscitation event data from a transmitting device distinct from the external defibrillator, the transmitting device including a second housing and a second wireless communication module, the external defibrillator comprising:

a first housing;

an energy storage module in an interior of the first housing configured to store an electrical charge;

a defibrillation port configured to guide via electrodes the electrical charge to the person;

a first wireless communication module configured to establish a wireless communication link with the second communication module, the first communication module being further adapted to receive wirelessly a data signal transmitted by the second communication module over the communication link, the data signal encoding the resuscitation event data stored in the transmitting device;

a memory configured to store the resuscitation event data that has been decoded from the data signal;

a processor configured to monitor a reception parameter of the communication link while the data signal is being received, and to set an alert flag if the processor determines from the reception parameter that reception of the data signal may be discontinued prematurely; and

a user interface configured to output an alerting user notification responsive to the alert flag being set, in which

the reception parameter includes an Error Correction Rate (ECR) derived from correcting errors as the resuscitation event data is decoded from the data signal, and

the alert flag is set if the ECR increases above an ECR threshold.

2. The external defibrillator of claim 1, in which

the user interface is further capable of outputting a regular user notification different from the alerting user notification that the data signal is being received.

3. The external defibrillator of claim 1, in which

the alerting user notification is at least one of a visual, audio, or physical notification.

4. The external defibrillator of claim 1, in which

the alerting user notification further includes a suggestion that a user check whether the transmitting device has been moved away from the defibrillator.

5. The external defibrillator of claim 1, in which

the alerting user notification further includes a suggestion that a user check for a potential source of interference with the communication link.

6. The external defibrillator of claim 1, in which

the processor is further configured to reset the alert flag if the processor determines from the reception parameter that the reception of the data signal has been restored.

7. The external defibrillator of claim 6, in which

the user interface is further capable of outputting a regular user notification different from the alerting user notification that the data signal is being received responsive to the determination that the reception of the data signal has been restored.

8. The external defibrillator of claim 1, in which

the transmitting device is a second external defibrillator distinct from the defibrillator.

9. An external defibrillator for defibrillating a person, and for receiving resuscitation event data from a transmitting device distinct from the external defibrillator, the transmitting device including a second housing and a second wireless communication module, the external defibrillator comprising:

a first housing;

an energy storage module in an interior of the first housing configured to store an electrical charge;

a defibrillation port configured to guide via electrodes the electrical charge to the person;

a first wireless communication module configured to establish a wireless communication link with the second communication module, the first communication module being further adapted to receive wirelessly a data signal transmitted by the second communication module over the communication link, the data signal encoding the resuscitation event data stored in the transmitting device;

a memory configured to store the resuscitation event data that has been decoded from the data signal;

a processor configured to monitor a reception parameter of the communication link while the data signal is being received, and to set an alert flag if the processor determines from the reception parameter that reception of the data signal may be discontinued prematurely; and

a user interface configured to output an alerting user notification responsive to the alert flag being set, in which

the reception parameter includes a rate of change of an Error Correction Rate (ECR) from correcting errors as the resuscitation event data is decoded from the data signal, and

the alert flag is set if the rate of change crosses a threshold.

10. The external defibrillator of claim 9, in which

the user interface is further capable of outputting a regular user notification different from the alerting user notification that the data signal is being received.

11. The external defibrillator of claim 9, in which

the alerting user notification is at least one of a visual, audio, or physical notification.

12. The external defibrillator of claim 9, in which

the alerting user notification further includes a suggestion that a user check whether the transmitting device has been moved away from the defibrillator.

13. The external defibrillator of claim 9, in which

the alerting user notification further includes a suggestion that a user check for a potential source of interference with the communication link.

14. The external defibrillator of claim 9, in which

the processor is further configured to reset the alert flag if the processor determines from the reception parameter that the reception of the data signal has been restored.

15. The external defibrillator of claim 14, in which

the user interface is further capable of outputting a regular user notification different from the alerting user notification that the data signal is being received responsive to the determination that the reception of the data signal has been restored.

16. The external defibrillator of claim 9, in which

the transmitting device is a second external defibrillator distinct from the defibrillator.

17. An external defibrillator for defibrillating a person, and for receiving resuscitation event data from a transmitting device distinct from the external defibrillator, the transmitting device including a second housing and a second wireless communication module, the external defibrillator comprising:

a first housing;

an energy storage module in an interior of the first housing configured to store an electrical charge;

a defibrillation port configured to guide via electrodes the electrical charge to the person;

a first wireless communication module configured to establish a wireless communication link with the second communication module, the first communication module being further adapted to receive wirelessly a data signal transmitted by the second communication module over the communication link, the data signal encoding the resuscitation event data stored in the transmitting device;

a memory configured to store the resuscitation event data that has been decoded from the data signal;

a processor configured to monitor a reception parameter of the communication link while the data signal is being received, and to set an alert flag if the processor determines from the reception parameter that reception of the data signal may be discontinued prematurely; and

a user interface configured to output an alerting user notification responsive to the alert flag being set, in which the processor is further configured to;

determine an expected amount of time needed for the first communication module to fully receive the data signal; and

determine an expected amount of time remaining before the receiving of the data signal becomes discontinued.

18. The external defibrillator of claim 17, in which

the processor is configured to determine the expected amount of time needed for the first communication module to fully receive the data signal by determining an amount of data remaining to be received.

19. The external defibrillator of claim 17, in which

the processor is configured to determine the expected amount of time remaining before the receiving of the data signal becomes discontinued by determining a degradation rate of the communication link.

20. The external defibrillator of claim 17, in which

the processor is configured to not set the alert flag if the processor determines that the expected amount of time needed for the first communication module to fully receive the data signal is less than the expected amount of time remaining before the receiving of the data signal becomes discontinued.

21. The external defibrillator of claim 17, in which

the alerting user notification is structured to convey the expected amount of time needed for the first communication module to fully receive the data signal, or the expected amount of time remaining before the receiving of the data signal becomes discontinued, or both, to a user.

22. The external defibrillator of claim 17, in which

the user interface is further capable of outputting a regular user notification different from the alerting user notification that the data signal is being received.

23. The external defibrillator of claim 17, in which

the alerting user notification is at least one of a visual, audio, or physical notification.

24. The external defibrillator of claim 17, in which

the alerting user notification further includes a suggestion that a user check whether the transmitting device has been moved away from the defibrillator.

25. The external defibrillator of claim 17, in which

the alerting user notification further includes a suggestion that a user check for a potential source of interference with the communication link.

26. The external defibrillator of claim 17, in which

the processor is further configured to reset the alert flag if the processor determines from the reception parameter that the reception of the data signal has been restored.

27. The external defibrillator of claim 26, in which

the user interface is further capable of outputting a regular user notification different from the alerting user notification that the data signal is being received responsive to the determination that the reception of the data signal has been restored.

28. The external defibrillator of claim 17, in which

the transmitting device is a second external defibrillator distinct from the defibrillator.