AUTOMATIC SYRINGE Russian patent published in 2024 - IPC A61M5/20 

FIELD: medical equipment.

SUBSTANCE: invention refers to medical equipment, namely to automatic syringes. Automatic syringe comprises: housing (1), needle safety device (2), pusher rod (3), sounding cylinder (4), inner tube (5), releasing ring (6), drive resilient element, and return resilient element. During use, cylinder (9) with needle is fixed in housing (1); needle point (91) protrudes from front housing (1); needle guard (2) is attached to housing (1) with possibility of retraction; needle guard (2) can force release ring (6) to slide towards the rear end of housing (1); after release ring (6) moves to the rear end, first retainer (55) of inner tube (5) releases the latched lock of the position of pusher rod (3); pusher rod (3) pushes piston (93) under the action of the drive resilient member to inject liquid from cylinder (9) with the needle into the body part to be injected, which provides automatic injection. After the injection is performed, sounding cylinder (4) is released from the position of inner tube (5) and slides towards the rear end of housing (1), and emits a signal indicating the injection. Automatic syringe according to the present solution comprises eight components for performing the function of automatic injection with a pre-filled cylinder with a needle.

EFFECT: compared to the prior equipment, the present solution has a simple design and few components, is characterized by a simple principle of operation of the mechanism and high reliability.

20 cl, 41 dwg