Systems and methods for detecting strokes

• US 10,537,262 B2
• Filed: 05/14/2015
• Issued: 01/21/2020
• Est. Priority Date: 05/14/2015
• Status: Active Grant

• Current Assignee: Elwha LLC (Intellectual Ventures LLC)
• Original Assignee: Elwha LLC (Intellectual Ventures LLC)
• Inventors: Cheatham, III, Jesse R., Dyor, Matthew G., Glaskowsky, Peter N., Hallman, Kimberly D. A., Hyde, Roderick A., Ishikawa, Muriel Y., Jung, Edward K. Y., Koenig, Michael F., Lord, Richard T., Lord, Robert W., Mundie, Craig J., Myhrvold, Nathan P., Petroski, Robert C., Tan, Desney S., Wood, Jr., Lowell L.
• Primary Examiner(s): Fernandez, Katherine L
• Assistant Examiner(s): Yang, Yi-Shan
• Application Number:
  US14/712,640
• Publication Number:
  US 20160331255A1
• Time in Patent Office: 1,713 Days
• Field of Search: None
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/031 Intracranial pressure
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: A61B 5/361 Detecting fibrillation
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment

Abstract

A system for detecting a type of stroke includes a processing circuit. The processing circuit is configured to receive heart data regarding a heart rhythm of a patient and physiological data regarding a physiological characteristic of the patient. The heart data is indicative of an occurrence of atrial fibrillation and the physiological data is indicative of an occurrence of a stroke. The processing circuit is further configured to determine a likelihood that the stroke was an embolic stroke based on the heart data and to provide an output including an indication of the likelihood that the stroke was an embolic stroke.

Claims

1. A system for detecting a type of stroke, comprising:

a heart-monitoring device configured to acquire heart data regarding a heart rhythm of a patient,

and

wherein the heart-monitoring device acquires heart data using micro impulse radar; and

a processing circuit configured to;

receive the heart data and determine an occurrence of atrial fibrillation based on the heart data;

receive physiological data regarding a physiological characteristic of the patient and determine an occurrence of a stroke based on the physiological data,

determine that the stroke was an embolic stroke based on whether the atrial fibrillation and the stroke occurred within a predetermined time period; and

control operation of a computing device to provide an output based on the determination that the stroke was an embolic stroke,

wherein the output comprising at least one of a sound, a visual indicator, and information regarding the stroke experienced by the patient transmitted to a device.

2. The system of claim 1, further comprising a patient-monitoring sensor, wherein the patient-monitoring sensor is remote from the patient.

3. The system of claim 2, wherein the patient-monitoring sensor is configured to acquire the physiological data using micro impulse radar.

4. The system of claim 2, wherein the patient-monitoring sensor is configured to acquire the physiological data using a camera.

5. The system of claim 2, wherein the patient-monitoring sensor is configured to acquire the physiological data using a microphone.

6. The system of claim 1, wherein the heart-monitoring device comprises a wearable heart-monitoring device configured to acquire the heart data.

7. The system of claim 6, wherein the wearable heart-monitoring device further comprises an electrocardiogram (EKG) monitor.

8. The system of claim 1, wherein the processing circuit is further configured to determine a probability of the patient'"'"'s heart emitting an embolus based on the heart data.

9. The system of claim 1, wherein determining that the stroke was an embolic stroke is further based on a probability of the patient'"'"'s heart emitting an embolus, wherein the probability of the patient'"'"'s heart emitting the embolus is determined based on the heart data.

10. The system of claim 7, wherein the heart data provides an indication of a fibrillation feature of the atrial fibrillation.

11. The system of claim 10, wherein the fibrillation feature provides an indication of at least one of a magnitude of the fibrillation, a duration of the fibrillation, and a number of episodes of fibrillation.

12. The system of claim 1, wherein the processing circuit is further configured to control operation of the computing device to provide the output to at least one of the patient and a medical provider.

13. The system of claim 1, wherein the hear-monitoring device is further configured to be accessed by a medical provider.

14. The system of claim 1, wherein the output includes at least one of an audible output, tactile output, and a visual output.

15. A system for detecting a type of stroke, comprising:

a heart-monitoring device configured to acquire heart data regarding a heart rhythm of a patient,

wherein the heart-monitoring device acquires heart data using micro impulse radar, and

wherein the heart-monitoring device comprises a physiological sensor configured to monitor a physiological characteristic of the patient,

wherein monitoring the physiological characteristic includes acquiring physiological data;

and

a processing circuit configured to;

receive the heart data and determine an occurrence of atrial fibrillation based on the heart data;

receive the physiological data and determine an occurrence of a stroke based on the physiological data,

determine that the stroke was an embolic stroke based on whether the atrial fibrillation and the stroke occurred within a predetermined time period; and

control operation of a computing device to provide an output based on the determination that the stroke was an embolic stroke, the output comprising at least one of a sound, a visual indicator, and information regarding the stroke experienced by the patient transmitted to a device.

16. The system of claim 15, wherein the physiological data is based on an audio signal received from the patient.

17. The system of claim 15, wherein the physiological data comprises a time associated with the occurrence of the stroke.

18. The system of claim 17, wherein the time includes a start time of the stroke.

19. The system of claim 17, wherein the time includes a collection time of the physiological data.

20. The system of claim 17, wherein the time includes a time of the diagnosis that a stroke occurred.

21. The system of claim 15, wherein the physiological data is based on a lack of motion of the patient.

22. The system of claim 15, wherein the physiological data includes an indication of a change in the patient'"'"'s orientation.

23. The system of claim 15, wherein the physiological data includes an indication of a change in the patient'"'"'s cranial pressure.

24. The system of claim 15, wherein the physiological data includes an indication of a change in the patient'"'"'s speech.