SYRINGE FOR DUAL GRADIENT DENTAL MATERIAL, A DOSING END NOZZLE AND A TWO-CHAMBER CARTRIDGE FOR A SYRINGE Russian patent published in 2022 - IPC A61C5/62 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine and medical technology and can be used for mixing and distributing two-component dental materials. The syringe for dual gradient dental material contains a housing 1 with a removable dosing end nozzle 2, a cavity for installing a two-chamber cartridge 3 and two pistons 4 and 5, which are placed in the housing 1 with the possibility of parallel movement along each chamber of the cartridge 3. The dosing end nozzle 2 is equipped with pointed hollow tubular elements 5 and 6 for piercing the cartridge chambers 3. Cartridge 3 is made of elastic film material. The pistons 4 and 5 are equipped with rods 7 and 8, which have cavities 9 and 10 for pointed hollow tubular elements 5 and 6. The ends of the pistons 4 and 5 are beveled to press the outer surfaces of the walls of the cartridge chambers 3 to the inner surface of the cavity of the housing 1. At the same time, longitudinal marks are made on the outer surface of the housing, located parallel to the longitudinal axes of the cavities for pointed hollow tubular elements, moreover, the distance between the longitudinal axes of the marks is equal to the distance between the longitudinal axes of the cavities for pointed hollow tubular elements.

EFFECT: increase in the convenience of manual dosing of two ingredients of dental material supplied in the proper amount and in the required ratio for mixing immediately before using the resulting composition in the mouth.

20 cl, 4 dwg