Patent ID: 7611905
Filing Date: 2009-11-03
Classification: G01N,Y10S,Y10T

Abstract:
1. An assay apparatus for assay in utilizing attenuated total reflection, comprising: an assay stage for being removably loaded with a sensor unit including a dielectric medium overlaid with a thin film, and a flow cell having a flow channel for flow of sample in contact with said thin film; a dispenser, having a pipette device for accessing said flow channel of said sensor unit set in said assay stage, for dispensing and introducing said sample into said flow channel; a light source for applying illuminating light to said thin film to satisfy a total reflection condition; a photo detector for receiving said illuminating light reflected by said thin film, to convert said illuminating light into an electric output; and a pressing mechanism for pressing said sensor unit on said assay stage for holding in a first direction in which said pipette device is moved for access, wherein said sensor unit has a linker film capable of immobilizing ligands and which contains immobilized ligands which is overlaid on said thin film.