PRECISE MAGNETIC BIO TRANSDUCER Russian patent published in 2011 - IPC G01N33/543 A61B5/145 G01N27/72 G01N15/06 

FIELD: physics.

SUBSTANCE: proposed device comprises sensitive surface consisting of binding sections that allow specific attachment to biological objects with magnetic labels, magnetic pickup element, appliance to differentiate between magnetic labels connected to binding sections and magnetic labels, not bound, to act on binding sections. System to determine concentration of target objects consists of measuring device and electronic circuit to detect changes in magneto resistive resonance of magnetic pickup element. Note here that electronic circuit stays in or out of substrate. To determine concentration of target objects in fluid, fluid medium containing magnetic labels is subjected to magnetic field to differentiate between bound and unbound magnetic labels for period when binding process occurs on sensitive surface.

EFFECT: higher accuracy and rate of determining concentration of target molecules in fluid.

24 cl, 9 dwg