MICROFLUIDIC RESISTANT NETWORK AND MICROFLUIDIC DEVICE Russian patent published in 2016 - IPC G01N1/38 B01L3/00 G01N15/14 

FIELD: medicine.

SUBSTANCE: present group of inventions relates to analysis equipment and can be used for diagnosing and treating patients. Microfluidic resistant network (20) contains the first (112) and second (114) microfluidic channels in fluid communicated with inlet openings (22) and (24) for the first and second fluids respectively. Network (20) also has a cross-shaped dilution section (100) with the first (112) and second (114) channels as the first and second inlets of the dilution section. First and second inlets form the first connection assembly (110). Dilution section additionally comprises the first microfluidic outlet channel (122) for connecting the part of the first fluid medium from the first channel with the second fluid medium from the second channel (114) and the second microfluidic outlet channel (124) to receive the remaining part of the first fluid medium. First (122) and the second (124) of the openings form the second connection assembly (120) located opposite the first connection assembly. Said first connection assembly comprises a central point (116), where the corresponding side walls of the first and second microfluidic channels mate. Imaginary axis (118) through the said central point divides the angle between the first and second microfluidic channels. Second connection assembly contains an additional central point (126), where the corresponding side walls of the first and second microfluidic outlet channels mate. Additional central point is shifted relative to the above imaginary axis to a predetermined distance. Disposable cartridge for analysing fluids of the body contains a microfluidic network (20). Microfluidic device (200) contains a microfluidic network (20) and a measuring device (50) containing a sample channel in fluid communication with first microfluidic discharge channel. Sample channel comprises a measuring device (52, 54, 62, 64).

EFFECT: to ensure certain optimum fluid flow rate and reduce the risk of jamming of air bubbles.

14 cl, 6 dwg