System and method for conserving power in a medical device

• US 10,493,289 B2
• Filed: 07/18/2016
• Issued: 12/03/2019
• Est. Priority Date: 07/09/2010
• Status: Active Grant

• Current Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Original Assignee: Zoll Medical Corporation (Asahi Kasei Corporation)
• Inventors: Volpe, Shane S., Rattanni, Richard A., Kaib, Thomas E.
• Primary Examiner(s): Hicks, Austin
• Application Number:
  US15/212,993
• Publication Number:
  US 20160325108A1
• Time in Patent Office: 1,233 Days
• Field of Search: 713320
• CPC Class Codes: A61B 5/352 Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval
• CPC Class Codes: A61N 1/0484 Garment electrodes worn by the patient
• CPC Class Codes: A61N 1/3925 Monitoring; Protecting
• CPC Class Codes: A61N 1/3975 Power supply A61N1/378 takes precedence
• CPC Class Codes: A61N 1/3987 characterised by the timing or triggering of the shock
• CPC Class Codes: A61N 1/3993 User interfaces for automatic external defibrillators
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/324 by lowering clock frequency
• CPC Class Codes: G06F 1/325 Power saving in peripheral device
• CPC Class Codes: G06F 1/3293 by switching to a less power-consuming processor, e.g. sub-CPU
• CPC Class Codes: G06F 1/3296 by lowering the supply or operating voltage
• CPC Class Codes: G06F 9/542 Event management; Broadcasting; Multicasting; Notifications
• 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: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A system and method for conservation of battery power in a portable medical device is provided. In one example, a processor arrangement includes a dual core processor having an ARM core and a DSP core. The portable medical device includes a monitor having the dual core processor, in communication with a belt node processor. The DSP core receives physiological data from the physiological sensor and sends the physiological data to the ARM core. The ARM core analyzes the physiological data to determine if a treatment sequence is necessary. The DSP core receives physiological data from the at least one physiological sensor and sends the physiological data to the ARM core, and also analyzes the physiological data to determine proper timing of the treatment sequence by the at least one therapy delivery device to synchronize at least one pulse of the treatment sequence with the physiological data.

Claims

1. A therapeutic medical device comprising:

at least one sensor interface configured to receive electrocardiogram (ECG) data descriptive of a patient;

at least one therapy delivery device;

a first processor coupled to the at least one therapy delivery device and configured to

receive an arrhythmia detection signal, and

control, in response to receipt of the arrhythmia detection signal, the at least one therapy delivery device to deliver treatment to the patient; and

a second processor distinct from the first processor, the second processor being coupled to the at least one sensor interface and being configured to

receive the ECG data via the at least one sensor interface,

process the ECG data to detect an arrhythmia condition of the patient, and

transmit, in response to detection of the arrhythmia condition, the arrhythmia detection signal to the first processor to cause the first processor to deliver the treatment,

the second processor being a dual core processor comprising an application core and a signal processing core,

the application core being configured to

receive the ECG data from the signal processing core, and

detect the arrhythmia condition, and

the signal processing core being configured to

process the ECG data to identify a time to deliver the treatment based upon the ECG data.

2. The therapeutic medical device of claim 1, wherein the treatment comprises at least one electric pulse.

3. The therapeutic medical device of claim 1, further comprising a shared memory configured to communicate with at least one of the first processor and the second processor and to store at least a portion of the ECG data descriptive of the patient.

4. The therapeutic medical device of claim 3, wherein the first processor is configured to analyze the portion of the ECG data in the shared memory and determine, based on the portion of the ECG data, whether a critical event has occurred.

5. The therapeutic medical device of claim 1 further comprising at least one ECG sensor, wherein the first processor and the second processor are configured to communicate using at least one of a Universal Asynchronous Receiver/Transmitter protocol, a wireless communication protocol, a serial communication protocol, a Controller Area Network (CAN) protocol, a Universal Serial Bus protocol or a General Purpose Input Output protocol and the second processor and the at least one ECG sensor are configured to communicate over a CAN bus interface.

6. The therapeutic medical device of claim 1, wherein the second processor is configured to receive the ECG data at least in part by receiving incoming packets containing the ECG data and to process the ECG data at least in part by analyzing the incoming packets containing the ECG data.

7. The therapeutic medical device of claim 1, wherein the first processor is configured to control the at least one therapy delivery device to deliver treatment according to a default timeline.

8. The therapeutic medical device of claim 7, wherein the second processor is configured to adjust the default timeline.

9. The therapeutic medical device of claim 8, wherein the second processor is configured to adjust the default timeline to synchronize the treatment based on the ECG data descriptive of the patient.

10. The therapeutic medical device of claim 9, wherein the second processor is configured to adjust the default timeline to synchronize the treatment with an R-wave of the ECG data.

11. The therapeutic medical device of claim 1, further comprising:

at least one ECG sensor; and

a belt node processor coupled to the at least one ECG sensor and the at least one sensor interface and configured to convert an ECG signal to the ECG data and to transmit the ECG data to the second processor via the at least one sensor interface.

12. The therapeutic medical device of claim 11, wherein the belt node processor is configured to control deployment of a therapeutic gel by the at least one therapy delivery device.

13. The therapeutic medical device of claim 1, further comprising a user interface comprising at least one of a display screen and a touchscreen.

14. The therapeutic medical device of claim 13, wherein the user interface is coupled to the second processor and further comprises a response button configured to provide an input to the second processor that causes a delay of initiation of the treatment.

15. A method of treatment for a patient using a therapeutic medical device comprising a first processor comprising an application core and a signal processing core and a second processor distinct from the first processor, the method comprising:

receiving, by the first processor via at least one sensor interface, ECG data descriptive of the patient;

receive, by the application core of the first processor, the ECG data from the signal processing core of the first processor;

processing, by the application core of the first processor, the ECG data to detect an arrhythmia condition of the patient;

processing, by the signal processing core of the first processor, the ECG data to identify a time to deliver treatment based upon the ECG data;

transmitting, by the first processor in response to detecting the arrhythmia condition, a signal to the second processor to cause the second processor to control at least one therapy delivery device to deliver treatment to the patient; and

controlling, by the second processor in response to receiving the signal, the at least one therapy delivery device to deliver treatment to the patient.

16. The method of claim 15, wherein controlling the at least one therapy delivery device comprises controlling the at least one therapy delivery device to deliver at least one electric pulse.

17. The method of claim 15, wherein receiving the ECG data comprises receiving incoming packets containing the ECG data and processing the ECG data comprises analyzing the incoming packets.