US 10,376,183 B2
Systems and methods for non-intrusive drug impairment detection
Stephen L. Macknik, Brooklyn, NY (US); Susana Martinez-Conde, Brooklyn, NY (US); Richard E. Dale, Scottsdale, AZ (US); Richard Besserman, Phoenix, AZ (US); and Tropy McDaniel, Chandler, AZ (US)
Assigned to Dignity Health, San Francisco, CA (US); and Arizona Board of Regents on Behalf of Arizona State University, Scottsdale, AZ (US)
Appl. No. 15/306,892
Filed by Dignity Health, San Francisco, CA (US); and Arizona Board of Regents on Behalf of Arizona State University, Scottsdale, AZ (US)
PCT Filed Apr. 27, 2015, PCT No. PCT/US2015/027730
§ 371(c)(1), (2) Date Oct. 26, 2016,
PCT Pub. No. WO2015/167992, PCT Pub. Date Nov. 5, 2015.
Claims priority of provisional application 61/986,032, filed on Apr. 29, 2014.
Claims priority of provisional application 62/010,600, filed on Jun. 11, 2014.
Prior Publication US 2017/0049362 A1, Feb. 23, 2017
Prior Publication US 2017/0258368 A9, Sep. 14, 2017
Int. Cl. A61B 5/11 (2006.01); A61B 5/18 (2006.01); A61B 5/00 (2006.01); A61B 3/113 (2006.01); A61B 5/16 (2006.01)
CPC A61B 5/1104 (2013.01) [A61B 3/113 (2013.01); A61B 5/163 (2017.08); A61B 5/18 (2013.01); A61B 5/4845 (2013.01); A61B 5/746 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A system, comprising:
a sensing arrangement that collects eye movement data of a user;
an alerting arrangement that produces an perceptible alert in response to receipt of an alert signal; and
a control unit in electronic communication with the sensing arrangement and the alerting arrangement, the control unit comprising:
a data analysis module that configures the control unit to extract one or more current eye movement dynamics, including one or more intersaccadic drift velocities, from the eye movement data; and
a comparison module that configures the control unit to:
receive the one or more current eye movement dynamics from the data analysis module;
identify, by comparing the one or more current eye movement dynamics, including the one or more intersaccadic drift velocities, to one or more baseline eye movement dynamics accessible by the control unit, a neurologic impairment caused by an intoxicated state of the user; and
send the alert signal to the alerting arrangement in response to an identification of the neurologic impairment;
wherein the data analysis module is configured to calculate the one or more intersaccadic drift velocities; and
wherein the comparison module is configured to compare the one or more intersaccadic drift velocities to one or more threshold drift velocities of the one or more baseline eye movement dynamics.