Patent ID: 8795500
Filing Date: 2014-08-05
Classification: B01L,G01N,Y10T

Abstract:
1. A micro-particle sorting apparatus comprising: a microchip in which a flow path through which liquid containing a micro particle flows and an orifice through which the liquid flowing through the flow path is discharged into a space outside the microchip; an oscillating element configured to transform the liquid into a liquid drop and discharge the liquid drop at the orifice; a charge means for adding an electric charge to the discharged liquid drop; an optical detection means that detects an optical property of the micro particle flowing through the flow path, upstream of a liquid-delivering direction with respect to the orifice; paired electrodes provided so as to be opposed to each other while sandwiching the moving liquid drop therebetween along a movement direction of the liquid drop discharged into the space outside the microchip; two or more containers that collect the liquid drop passing between the paired electrodes, wherein a width of the flow path and a depth of the flow path at a location of the orifice are set to be smaller than a width of the flow path and a depth of the flow path at a location at which the optical property of the micro particle is detected by the optical detection means; and wherein at least the orifice portion of the microchip and the space outside the microchip in which the liquid drop discharged through the orifice moves are arranged in a cavity of a cartridge having light transmittance for light from the optical detection means.