IP Library Granted Patent US 11,260,228
Granted Patent B2
US 11,260,228 · App. 16/879,386 · Granted Mar 1, 2022

Wearable device with tragus modulation system

Inventor: Samuel J. Asirvatham (Rochester, MN)
Assignee: Mayo Foundation for Medical Education and Research
A61N1/36039A61N1/0456A61N1/36114A61N1/36139A61N1/36175G16H40/67
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Quick Facts
Patent No.
US 11,260,228
App. No.
16/879,386
Granted
Mar 1, 2022
Kind
B2
Abstract

A wearable device combines its existing functions (e.g., a headphone) with non-invasive autonomic modulation using tragus or other external auditory meatus stimulation. The wearable device can output audio to a user, such as music, podcast, etc., and further provide modulation of the vagus nerve via tragus stimulation or other external auditory meatus stimulation to treat various diseases.

Claims (65)

1. A wearable device comprising:

a housing configured to be removably attached adjacent to a tragus area;

a speaker configured to generate sound based on the sound signal;

a sensor configured to detect physiological or neurological parameters;

electrodes configured to deliver electric signals;

a processing device; and

a memory device storing instructions that when executed by the processing device cause the wearable device to perform operations comprising:

outputting audio using the speaker;

generating a stimulatory signal;

applying the stimulatory signal on the tragus area to increase vagal tone;

detecting a signal for autonomic tone;

determining that a vagal input exceeds a threshold value;

generating an inhibitory signal that represents a reversible electroporation sequence; and

applying the inhibitory signal on the tragus area.

2. The wearable device of claim 1 , wherein the stimulatory signal is DC signal.

3. The wearable device of claim 2 , wherein the inhibitory signal is inverse to the stimulatory signal.

4. The wearable device of claim 1 , wherein at least one of the stimulatory signal and the inhibitory signal uses nanosecond pulse widths and/or relatively high amplitude.

5. The wearable device of claim 1 , wherein at least one of the stimulatory signal and the inhibitory signal uses electroporation targeting sensory nerves and sensory impulses from vagus afferents.

6. The wearable device of claim 1 , wherein a frequency of the stimulatory signal and/or an electroporative pulse of the inhibitory signal are determined based on a site to which the stimulatory signal and/or the inhibitory signal are applied.

7. The wearable device of claim 1 , wherein the operations further comprise:

generating an inverse signal for the stimulatory signal and/or the inhibitory signal;

injecting the inverse signal into the audio signal to cancel the stimulatory signal and/or the inhibitory signal to not interfere with user's auditory experience of the audio signal.

8. The wearable device of claim 7 , wherein the operations further comprise:

creating a template for the stimulatory signal and the inhibitory signal, wherein the inverse signal is generated based on the template.

9. The wearable device of claim 1 , wherein the operations further comprise:

generating a reversible electroporation sequence; and

validating autonomic neural recordings based on the reversible electroporation sequence.

10. The wearable device of claim 9 , wherein the reversible electroporation sequence is a small phased DC sequence.

11. The wearable device of claim 1 , wherein the operations further comprise:

generating pulsed DC sequences as a negative effector; and

applying the pulsed DC sequences to temporarily and reversibly electroporate vagal afferents.

12. The wearable device of claim 1 , wherein the operations further comprise:

detecting, using a sensor, a predetermined parameter representative of autonomic tone; and

determining when to simulate, how much to stimulate, and when to block based on the predetermined parameter.

13. The wearable device of claim 12 , wherein the predetermined parameter includes a local electroneural and thermal conductivity.

14. The wearable device of claim 1 , wherein the operations further comprise:

detecting, using a neural network based learning algorithm, an individual's physiological parameter;

determining that there is an adverse detection of autonomic tone; and

enabling preemptive change in the stimulatory signal and/or the inhibitory signal.

15. The wearable device of claim 14 , wherein the physiological parameter includes a heart rate variability.

16. A method for stimulating a tragus, the method comprising:

generating and outputting, using a wearable device, an audio signal;

generating, using the wearable device, a stimulatory signal;

applying, using the wearable device, the stimulatory signal on a tragus area to increase vagal tone, wherein the wearable device is arranged at the tragus area;

detecting a signal for autonomic tone;

determining that a vagal input exceeds a threshold value;

generating, using the wearable device, an inhibitory signal that represents a reversible electroporation sequence; and

applying, using the wearable device, the inhibitory signal on the tragus area.

17. The method of claim 16 , wherein at least one of the stimulatory signal and the inhibitory signal uses nanosecond pulse widths and/or relatively high amplitude, and wherein at least one of the stimulatory signal and the inhibitory signal uses electroporation targeting sensory nerves and sensory impulses from vagus afferents.

18. The method of claim 16 , wherein a frequency of the stimulatory signal and/or an electroporative pulse of the inhibitory signal are determined based on a site to which the stimulatory signal and/or the inhibitory signal are applied.

19. The method of claim 16 , further comprising:

generating an inverse signal for the stimulatory signal and/or the inhibitory signal;

injecting the inverse signal into the audio signal to cancel the stimulatory signal and/or the inhibitory signal to not interfere with user's auditory experience of the audio signal; and

creating a template for the stimulatory signal and the inhibitory signal, wherein the inverse signal is generated based on the template.

20. The method of claim 16 , further comprising:

generating a reversible electroporation sequence comprising a small phased DC sequence;

validating autonomic neural recordings based on the reversible electroporation sequence;

generating pulsed DC sequences as a negative effector;

applying the pulsed DC sequences to temporarily and reversibly electroporate vagal afferents;

detecting, using a neural network based learning algorithm, an individual's physiological parameter;

determining that there is an adverse detection of autonomic tone;

enabling preemptive change in the stimulatory signal and/or the inhibitory signal;

detecting, using a sensor, a predetermined parameter representative of autonomic tone; and

determining when to simulate, how much to stimulate, and when to block based on the predetermined parameter,

wherein the predetermined parameter includes a local electroneural and thermal conductivity, and wherein the physiological parameter includes a heart rate variability.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2020
From: ASIRVATHAM, SAMUEL J.
To: MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH
Reel/Frame 054709/0132 →
Continuity (2)
Provisional Application 62850976 · May 21, 2019
Related Publication 20200368527A1 · Nov 26, 2020