Resources Contact Us Home
Process and device for carrying out fluorescence immunoassays

Image Number 3 for United States Patent #6440748.

The invention concerns a device and a method for carrying out fluorescence immunoassays, wherein from at least one light source light is directed onto a surface at one end of a light waveguide and with the light coupled into the light waveguide by evanescent field excitation at the surface of the light waveguide fluorescence of at least one labelling substance bound to a chemical or biochemical partner of a general receptor-ligand system is excited. The solution according to the invention is here to provide a possible way of carrying out fluorescence immunoassays with high accuracy of measurement at low cost and within a short time. To achieve this object, the fluorescent light is decoupled from the light waveguide and directed via an optical system onto an optical detector with which the intensity of the fluorescent light is measured. Here the light waveguide is held in a measuring chamber formed in a piston of a piston and cylinder unit, and the measuring chamber is connected to the interior of the cylinder by an inlet formed in the piston.

  Recently Added Patents
Selecting one of a plurality of print modes based on pixel coverage of a document
Frothable aqueous composition for use in a carpet backing composition
Medicament container
Push button
Fixing apparatus
Reading apparatus and reading method
  Randomly Featured Patents
Countertop bar code symbol reading system having automatic hand supportable bar code symbol reading device and stand for supporting projected scan field
Electric plug and electric plug socket
Voicemail interface system and method
New cyanohydrin iodopropargyl ethers, process for their preparation and their use as microbicides
GPS-installed all-azimuth camera and spatial data collecting device
Photographic printing paper support
Redundant avionics for critical flight instruments
Device for lifting and rotating containers
Image forming apparatus to perform color substitution, and method for controlling the same
Phase shifter with flexible control voltage