PROTECTION AND FILLING SYSTEM FOR SYRINGES WITH RETRACTABLE NEEDLE Russian patent published in 2021 - IPC A61M5/315 

FIELD: medical equipment.

SUBSTANCE: present invention relates to medical technology, namely to an innovative system that finally prevents the reuse of syringes with retractable needles, while the syringe cylinder can be filled using a mechanical system installed inside the piston. The action aimed at preventing the reuse of the device is performed using a mechanical system that prevents the piston from returning to the initial suction position and thus restricts the action of the piston in one direction, and prevents the piston from returning to the initial injection position and thereby restricts its action in one direction. In addition, the rotary mechanical transmission system prevents the piston from returning to the previous position. Instead, the filling of the syringe cylinder occurs through the use of a system in which a flexible cannula is placed inside the piston.

EFFECT: invention prevents the reuse of syringes with retractable needles.

6 cl, 9 dwg