INJECTION AND ASPIRATION SYRINGE Russian patent published in 2024 - IPC A61M5/178 A61M5/31 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to a syringe for injection and aspiration. Syringe comprises a tube, a piston rod and a finger grip component. Tube is configured to retain liquid material. Piston rod has a piston movably located inside the tube, and a piston rod head attached to the piston rod opposite to the piston. Piston rod head has a first surface and a second surface opposite the first surface. On at least part of the first surface there is a first non-slip surface part, and on at least part of the second surface there is a second non-slip surface part. Finger grip component comprises a first portion extending from a longitudinal axis A of the syringe, a second portion extending from a longitudinal axis A of the syringe, and a partial peripheral opening. Finger grip component is a one-piece body attached to the tube and comprises a support surface for the finger during injection with a third non-slip surface part located in the first part and curved in a direction perpendicular to the longitudinal axis with a first curvature, and a finger support surface during aspiration with a fourth non-slip surface part located in the second part and curved in a direction perpendicular to the longitudinal axis with a second curvature. Third non-slip surface part faces from the first surface of the piston rod head. Fourth non-slip surface part faces the second surface of the head of the piston rod, besides, the second surface faces the finger grip component. Third non-slip surface part and the fourth non-slip surface part are connected by an intermediate non-slip surface part. Intermediate non-slip surface part and partial peripheral hole are located on opposite peripheral sides.

EFFECT: invention provides a syringe containing a combination of ergonomic elements, which improve productivity of the user, making it possible to hold the syringe more reliably and to easily perform both aspiration and injection using one hand.

13 cl, 4 dwg