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Immunomagnetic assay system for clinical diagnosis and other purposes

  • US 5,972,721 A
  • Filed: 03/14/1997
  • Issued: 10/26/1999
  • Est. Priority Date: 03/14/1996
  • Status: Expired due to Fees
First Claim
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1. A magnetic flow cell for capturing antibody-coated magnetic beads from a fluid sample as part of an immunomagnetic assay system, comprising:

  • (a) a housing;

    (b) a chamber inside the housing;

    (c) an inlet port through the housing into the chamber for flowing the fluid sample into the chamber;

    (d) an outlet port through the housing out from the chamber for flowing the fluid sample out of the chamber;

    (e) a plurality of paramagnetic rods positioned inside the chamber such that the flowing fluid sample will flow past the plurality of the paramagnetic rods as it flows through the chamber,wherein the chamber is shaped so that its cross-sectional area expands from where it connects to the inlet port to a position past at least the plurality of the paramagnetic rods.

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