DEVICE FOR INTAKE, DOSING AND DILUTION OF BIOLOGICAL FLUID BY SWITCHING DOSING LINES WITHOUT THE USE OF ANY MOVING ELEMENTS Russian patent published in 2023 - IPC A61B5/151 G01N33/49 

FIELD: medical technology.

SUBSTANCE: claimed invention relates to the devices for analyzing blood composition. The biological fluid intake, dosing and dilution device contains a preliminary dilution chamber and a sampling unit made in the form of a pipe of variable length cross-section open on both sides, which consists of a receiving line and a vacuum line and contains side lines on the receiving line: one dulient supply line and two outlet lines plugged with locking elements made with the possibility of opening at the moment of supplying a biological fluid sample from the inlet part of the sampling unit, while a vacuum pump is used to supply a biological fluid sample to be diluted, located on the opposite side of the vacuum line containing the locking element, made with the possibility of closing after filling the internal volume of the receiving line, upon receiving a signal about filling the internal volume of the receiving line from at least one liquid position sensor installed on the pipe, followed by opening the locking elements on the side lines and supplying the sample partially mixed with the diluent into the chamber preliminary breeding.

EFFECT: technical result of the claimed invention is the simplification of the design, the elimination of breakdowns due to the absence of moving elements in the device for collecting, dosing and diluting the biological fluid.

3 cl, 1 dwg