IP Library Granted Patent US 11,992,333
Granted Patent B2
US 11,992,333 · App. 17/575,179 · Granted May 28, 2024

Method and system for transdermal alcohol monitoring

Inventors: Keith Harry Nothacker (San Francisco, CA); William Tammen (San Francisco, CA); Raymond Kampmeier (San Francisco, CA)
Assignee: KHN Solutions, LLC
A61B5/4845A61B5/14546A61B5/681A61B5/6833A61B10/0064A61B5/0002A61B5/097A61B5/6824A61B2010/0009A61B2010/0087
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Quick Facts
Patent No.
US 11,992,333
App. No.
17/575,179
Granted
May 28, 2024
Kind
B2
Abstract

A method for monitoring intoxication of a user, the method including: receiving a set of samples from a body region of a user; generating an intoxication metric based on the set of samples; and providing a notification to the user based on the intoxication metric. The method can additionally or alternatively include: modifying operation of the transdermal alcohol sensing device based on the intoxication metric; determining contextual data; maintaining a hydration level of the transdermal alcohol sensing device; and any other suitable processes. A system for monitoring intoxication of a user including a sensor and a housing. The system can additionally or alternatively include any or all of: an inlet, a fastener, an electronics subsystem, a user device, and/or any other suitable component.

Claims (29)

1. A system for monitoring intoxication of a user, the system comprising:

a transdermal sensing device comprising an alcohol sensor, wherein the transdermal sensing device collects a sample proximal to a skin surface of the user;

a set of supplementary sensors in communication with the transdermal sensing device, wherein the set of supplementary sensors collects a set of supplementary data; and

a processing system, wherein the processing system:

determines an intoxication metric based on the sample, wherein the intoxication metric is determined at least in part with a machine learning algorithm trained based on data collected at a set of breathalyzer devices;

triggers the transmission of a notification based on at least one of the intoxication metric or the set of supplementary data.

2. The system of claim 1 , wherein the machine learning algorithm is further trained based on data collected at a set of transdermal sensing devices, wherein the set of breathalyzer devices is separate and distinct from the set of transdermal devices.

3. The system of claim 1 , wherein the machine learning algorithm implemented for the user is tailored based on demographic information associated with the user.

4. The system of claim 1 , wherein the intoxication metric comprises a Blood Alcohol Content (BAC) value.

5. The system of claim 1 , wherein the BAC value is determined with the machine learning algorithm and based on a Transdermal Alcohol Content (TAC) value, wherein the TAC value is determined based on an alcohol signal derived from the sample.

6. The system of claim 1 , wherein the notification is transmitted to a user device, wherein the user device is separate and distinct from the transdermal alcohol sensing device.

7. The system of claim 6 , wherein the user device is associated with a second user.

8. The system of claim 1 , wherein the set of supplementary sensors comprises a temperature sensor and a motion sensor.

9. The system of claim 8 , wherein the set of supplementary sensors is at least partially arranged onboard the transdermal device.

10. The system of claim 9 , wherein the set of supplementary sensors further comprises a location sensor.

11. The system of claim 10 , wherein the location sensor is arranged offboard the transdermal sensing device.

12. The system of claim 1 , wherein the intoxication metric is further determined based on information collected at the set of supplementary sensors.

13. The system of claim 1 , wherein the sample is a vapor sample.

14. A method for monitoring intoxication of a user with a transdermal device, the method comprising:

collecting a sample proximal to a skin surface of the user with the transdermal device;

collecting a set of supplementary data with a set of supplementary sensors;

determining an intoxication metric based on processing the sample with a machine learning algorithm, wherein the machine learning algorithm is trained based on a first dataset collected at a set of breathalyzer devices and a second dataset collected at a set of transdermal devices, wherein the set of breathalyzer devices is separate and distinct from the set of transdermal devices; and

triggering the transmission of a notification based on at least one of the intoxication metric or the set of supplementary data.

15. The method of claim 14 , further comprising collecting, with the transdermal device, a set of multiple samples, the set of multiple samples comprising the sample, wherein the set of samples is collected according to a sampling frequency.

16. The method of claim 15 , further comprising adjusting the sampling frequency based on at least one of: the intoxication metric and information collected at a set of supplementary sensors, the set of supplementary sensors onboard the transdermal sensing device.

17. The method of claim 14 , wherein the notification instructs the user to take a breathalyzer test with a breathalyzer device, the breathalyzer device separate and distinct from the transdermal device.

18. The method of claim 14 , wherein the machine learning algorithm adjusted for the user based on demographic information associated with the user.

19. The method of claim 14 , further comprising collecting, with the transdermal device, a set of multiple samples, the set of multiple samples comprising the sample, wherein processing the sample with a machine learning algorithm comprises determining a BAC curve based on the set of multiple samples.

20. The method of claim 19 , wherein the intoxication metric is determined based on calculating an area underneath the BAC curve.

Assignments (2)
CHANGE OF NAME Recorded Aug 17, 2023
From: KHN SOLUTIONS, INC.
To: KHN SOLUTIONS, LLC
Reel/Frame 064634/0443 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 13, 2022
From: NOTHACKER, KEITH HARRY; TAMMEN, WILLIAM; KAMPMEIER, RAYMOND
To: KHN SOLUTIONS, INC.
Reel/Frame 058649/0014 →
Continuity (4)
Continuation 17223264 · Apr 6, 2021
Continuation 16362444 · Mar 22, 2019
Provisional Application 62646706 · Mar 22, 2018
Related Publication 20220133226A1 · May 5, 2022