FIELD: medical engineering.
SUBSTANCE: device has at least one electrochemical element having internal electrode and external electrode arranged concentrically. The external electrode has cylindrical shape with open proximal end. Space between the electrodes forms reaction chamber. Insulating material is coaxially placed between the parts of nearest electrode ends. The system has control unit having electric connection to the electrochemical element for controlling selection and analysis of given component.
EFFECT: minimum interference in tissues when taking samples.
10 cl, 3 dwg
