DUAL-CHAMBER DISPOSABLE SYRINGE Russian patent published in 2014 - IPC A61M3/00 

FIELD: medicine.

SUBSTANCE: dual chamber disposable syringe comprises a hollow cylindrical body wherein there are coupled piston and stopped rod; the piston hermetically divides an internal volume of its cylindrical cavity into a fluid chamber and an air chamber by the fact that its proximal end is hermetically closed by a finger stop flange and a seal; a distal end of the syringe comprises two axial cones for two hollow injection needles in parallel to each other, or one dual needle with two passages; the air chamber is connected through the axial cones to an air chamber by an external air passage formed by a plastic pipe; a needle used for the air passage is longer than a withdrawal needle; the sealing flange on a dead end of the syringe is configured to align the rod; the syringe is made from the same material that is used for making a common disposable syringe.

EFFECT: using the invention enables providing the fluid flow with pressure balancing and maintaining the system integrity and performing an injection without additional training of the medical staff.

2 cl, 3 dwg