US 12,352,680 B2
Particle recovery device and particle recovery method
Yukio Watanabe, Kyoto (JP)
Assigned to ARKRAY, Inc., Kyoto (JP)
Filed by ARKRAY, Inc., Kyoto (JP)
Filed on Jul. 15, 2022, as Appl. No. 17/812,957.
Claims priority of application No. 2021-138413 (JP), filed on Aug. 26, 2021.
Prior Publication US 2023/0076932 A1, Mar. 9, 2023
Int. Cl. G01N 15/1404 (2024.01); G01N 15/10 (2024.01)
CPC G01N 15/1404 (2013.01) [G01N 2015/1028 (2024.01); G01N 2015/142 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A particle recovery method of recovering particles contained in a urine sample, the particle recovery method comprising:
applying, in a flow path, an ultrasonic wave that repeatedly sweeps between a second frequency lower than a first frequency that is a frequency of the ultrasonic wave that generates, in the flow path, a standing wave having a single node in the flow path through which the urine sample flows, the standing wave being generated in a direction orthogonal to a flow direction of the flow path when an averaged sample solution, obtained by mixing multiple urine samples with different densities, is caused to flow through the flow path, and a third frequency that is a frequency higher than the first frequency; and
recovering the particles focused in the flow path by the standing wave.