Patent ID: 8548552

Claim:
Self-calibrating disposable biosensor comprising an electronic part and an electrochemical part, wherein the electrochemical part comprises a needle having an external surface configured to contact living tissue, said needle having in its interior a microfluidic circuit ( 8 , 9 ) for the circulation of at least one calibration fluid, and two or three electrodes ( 1 , 2 , 3 ) arranged on the external surface of the needle, one of the electrodes being a working electrode ( 1 ), said working electrode comprising porous bio-chemical sensing materials ( 30 - 32 ) configured to contact living tissue after implantation, and means for fluid communication ( 4 ) of the microfluidic circuit ( 8 , 9 ) for the calibration fluid which is in the interior of said needle with the layers ( 29 - 32 ) of the working electrode on the external surface of the needle.