FIELD: medical engineering. SUBSTANCE: device includes hyperdermic needle having opening at its end and one or several side openings, passage that communicates needle with analyzer which in turn is in communication with delivery-suction device, assay unit, multi-way valve and perfusion liquid reservoir. Hyperdermic needle has sole inner passage. Analyzer communicates on its both sides with detachable connections to provide communication with hyperdermic needle and delivery-suction device and is electrically connected to assay unit. Multi-way valve is disposed connecting tube and communicates with it via two passages located in between delivery-suction device and analyzer. Third multi-way valve passage communicates with perfusion liquid reservoir. EFFECT: greater convenience. 13 cl, 6 dwg
