Patent ID: 8384374
Filing Date: 2013-02-26
Classification: G01N

Abstract:
1. An apparatus for automatically testing integrated CMOS magnetoresistive biochip comprising: means for applying pressure directly or indirectly to a cartridge; a liquid injection system connected to the cartridge for injecting liquid into the microfluidic channel or channels in said cartridge, means for generating a magnetic field, by providing, according to requirements, a positive or negative current with certain intensity to a electromagnet to generate a positive or negative magnetic field with certain intensity, and for applying the positive or negative magnetic field to said integrated CMOS magnetoresistive biochip on said cartridge; an electronic module for controlling and reading information from said biochip, to supply power and control signal to said integrated CMOS magnetoresistive biochip in said cartridge, communicate with a large scale integrated CMOS circuit on the biochip, test the information stored in the sensing elements of the integrated CMOS magnetoresistive biochip, and convert the tested analog signal to digital signal; a microprocessor to control and coordinate the operation of the following components: said means for applying pressure, said liquid injection system, said means for generating a magnetic field, and said electronic module for controlling and reading information from the biochip, and to process information measured under different magnetic fields; a user interface connected to the microprocessor to receive and display information from said microprocessor.