| 摘要 |
The present invention relates to a length-reducing syringe driving device (100) mounted on a syringe device (10) so as to push and drive a piston (12) installed on an injection cartridge (11), which has a discharge opening (13) formed on one end thereof, such that the content is discharged by a predetermined amount, the syringe driving device comprising: a rotating driving unit (110) installed on at least one part of the outer surface of the other end of the syringe cartridge (11); and a unidirectionally bending/stretching member (120), which has one end installed to contact the piston (12), which is configured to be able to bend/stretch in one direction only, and a side surface of which in the bending/stretching direction is driven by the rotating driving unit (110) so as to push and drive the piston (12). According to the present invention, the main component is positioned on the outer side surface of the injection cartridge such that, given the same stroke (l), the overall length (L) of the driving device is substantially reduced, thereby advantageously implementing syringe devices of various types with excellent portability. |
