FLUID INJECTION DEVICE Russian patent published in 2023 - IPC A61M5/20 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical equipment, namely to devices for fluid injection through animal skin. The device contains cylinder (16, 116), which has open issuing end (17), pusher (36), which can be moved between a front and rear edge position in cylinder (16, 116) and is connected to pusher rod (35), which protrudes outside a rear end of cylinder (16, 116), opposite to open issuing end (17), in the first direction and is directed to receiving unit (10), non-return valve (18), which closes open issuing end (17), and stretching device (S), which is attached to pusher rod (35, 135) and is placed in receiving unit (10). Stretching device (S) has inclined guide rail (52), which is rotatable by means of motor (12), and which has inclined track (53) extending along a screw line. Inclined track (53) ascends from the first plateau to the second plateau along inclined area (S1, S2) and descends from the second plateau to the first plateau through transition side (46). Stretching device (S) additionally has roller (51), which touches inclined track (53), and which is installed with the possibility of rotation in drive device (50) attached to an end of pusher rod (35, 135), protruding from cylinder (16, 116), so that inclined track (53) passes under roller (51), which, thus, is rotated during rotation of inclined guide rail (52), while roller (51) has contact area (55), which rests against inclined area (S1, S2) of inclined track (53), and at least one side area (56, 57), which is adjacent from side to the contact area, and which has a smaller outer diameter compared to contact area (55) and does not rest against inclined area (S1, S2) of inclined track (53). During rotation of the inclined guide rail, contact area (55) and side area (56, 57) come into contact with edge (54) of inclined track (53), which connects the second plateau to transition side (46).

EFFECT: obtainment of a fluid injection device.

16 cl, 18 dwg