DEVICE FOR MICRODOSING OF HAZARDOUS BIOLOGICAL LIQUIDS, EXCLUDING CONTAMINATION OF HAZARDOUS INFECTIONS Russian patent published in 2017 - IPC G01F11/00 

FIELD: medicine.

SUBSTANCE: device refers to dispensers with external controls for repeated automatic dosing and discharge of a specified volume of liquids, incl. dangerous biological liquids, and can find application in various scientific researches in the field of biology and medicine, as well as for conduction of laboratory diagnostics in healthcare facilities. A dispenser with external control for microdosing of dangerous biological liquids consisting of a reservoir for solutions, an electromagnetic valve, a micropump and a disposable sterile flexible capillary hose is proposed. The free end of the disposable sterile flexible capillary hose is clamped and cycled by the automatic manipulator head, depending on the cycle stage, into the interior of the disposable sterile flexible capillary hose by means of a micropump connected to the solution tank through a solenoid valve, solution or test liquid is supplied in direct or reverse direction. At the selection stage, the microdose sequence of the liquid and air bubble is formed. At the dosing stage, the studued liquid is discharged to the analytical device or onto its functional element by changing the direction of the solution flow supplied from the reservoir. In the completed selection/dosing cycle, the spent portion of the flexible capillary tube is moved to the hazardous waste collection container, cut off and discharged into it. The dispenser is then ready for the next selection/dosing cycle until the entire flexible capillary hose is expended and replaced with a new one.

EFFECT: prevention of mutual contamination of the tested liquid samples, reduced risk of possible infection of personnel during laboratory diagnosis and probability of the spread of dangerous infections.

2 dwg