Immunoassay system and immunoassay method

  • US 20050202572A1
  • Filed: 12/08/2004
  • Published: 09/15/2005
  • Est. Priority Date: 03/11/2004
  • Status: Active Grant
First Claim
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1. An immunoassay system comprising:

  • a disk-shaped sample holder which holds on a circle a plurality of sample containers for accommodating marked samples, resulting from marking of samples with magnetic particles by antigen-antibody reaction;

    rotating means for rotating said disk-shaped sample holder around its central shaft;

    magnetizing means for magnetizing said marked samples;

    a magnetic sensor for detecting magnetic fields generated from said marked samples which have been magnetized; and

    a magnetic shield surrounding said magnetic sensor, wherein said plurality of sample containers are so configured as to be successively inserted from outside to inside of said magnetic shield by rotation of said disk-shaped sample holder;

    said magnetizing means magnetize said marked samples outside said magnetic shield;

    said magnetic sensor detects within said magnetic shield the magnetic fields generated from said marked samples which have been magnetized; and

    the detection of said magnetic fields and said magnetization are executed in parallel.

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