US 12,213,800 B2
Nanostructure-based cannabinoid sensor
Alexander Star, Pittsburgh, PA (US); and Sean Ihn Young Hwang, Cambridge, MA (US)
Assigned to University of Pittsburgh—Of the Commonwealth System of Higher Education, Pittsburgh, PA (US)
Filed by University of Pittsburgh—Of the Commonwealth System of Higher Education, Pittsburgh, PA (US)
Filed on Jun. 6, 2023, as Appl. No. 18/206,401.
Application 18/206,401 is a continuation of application No. 16/608,096, granted, now 11,712,200, previously published as PCT/US2018/029543, filed on Apr. 26, 2018.
Claims priority of provisional application 62/491,502, filed on Apr. 28, 2017.
Prior Publication US 2023/0309920 A1, Oct. 5, 2023
Int. Cl. A61B 5/1477 (2006.01); A61B 5/00 (2006.01); A61B 5/08 (2006.01); A61B 5/097 (2006.01); A61B 5/1455 (2006.01); C01B 32/159 (2017.01); C01B 32/198 (2017.01); G01N 33/94 (2006.01)
CPC A61B 5/4845 (2013.01) [A61B 5/082 (2013.01); A61B 5/097 (2013.01); A61B 5/1455 (2013.01); A61B 5/1477 (2013.01); C01B 32/159 (2017.08); C01B 32/198 (2017.08); G01N 33/948 (2013.01); A61B 2562/0285 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for detection of a cannabinoid in a sample, which is a sample of a bodily fluid or a sample of breath, comprising:
a housing,
a sensor positioned within the housing and comprising a substrate and a sensor medium on the substrate, the sensor medium comprising at least one nanostructure, wherein at least one property of the sensor medium is dependent upon the presence of the cannabinoid on a surface of the sensor medium, wherein the sensor is positioned within the housing for direct contact of the sample with the sensor medium, and the sensor medium is configured to respond to a presence of the cannabinoid in a concentration arising from the use of a cannabinoid-containing substance by a person from whom the sample is taken; and
electronic circuitry comprising at least one measurement system in operative connection with the sensor to measure a variable relatable to the at least one property of the sensor medium dependent upon the presence of the cannabinoid.