ASPIRATION-INJECTION DEVICE Russian patent published in 2020 - IPC A61M5/31 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, specifically to syringes. Syringe comprises: a cylinder having an inner lumen and a flange protruding radially from the proximal end portion of the cylinder to facilitate manipulation of the syringe during operation; and a plunger having a plunger rod and a plunger head, wherein the plunger rod has a distal end portion, at least partially located in the inner lumen of the cylinder, and a proximal end portion connected to the plunger head, wherein the plunger head has proximal and distally directed surfaces and a plurality of engaging structures protruding distally from the distally directed surface.

EFFECT: easier gripping of the user's thumb while working with a syringe.

16 cl, 8 dwg