DISPOSABLE CAPILLARY SYRINGE-VISCOSIMETER FOR INVESTIGATION OF BIOLOGICAL LIQUIDS Russian patent published in 2000 - IPC

FIELD: medicine, in particular, biological liquid viscosity measuring equipment. SUBSTANCE: syringe has transparent cylindrical casing with branch pipe for seating and fixing of needle on outlet end of casing, and piston. Casing rim with opening in its side wall is positioned in axial alignment with casing and may be rotated so that its opening is aligned with drain opening in casing or in overlapped relation with respect to casing opening. Indicator-sight is positioned on bar joined to piston stem. Straight cylindrical capillary is positioned in outlet part of casing, and drain opening in side wall is adapted for communicating cavity under piston with atmosphere. Syringe of such construction allows viscosity of biological liquid to be easily measured even by unskilled people. EFFECT: increased efficiency, simplified construction and convenient usage. 5 dwg