Hydro-optic needle injection structure

The invention discloses a hydro-optical needle injection structure, and belongs to the field of medical instruments, the hydro-optical needle injection structure comprises a negative pressure cavity, a needle head, an injector and a push rod, the needle head is installed in the negative pressure cavity, the injector is communicated with the needle head, the push rod is installed on the injector, the hydro-optical needle injection structure further comprises a support, a driving assembly and a sliding block, the support is fixedly connected with the sliding block, the driving assembly comprises a motor, a speed reducer and a screw rod, the motor is connected with the speed reducer, the screw rod is connected with the speed reducer, the sliding block is matched with the screw rod, the motor drives the screw rod to rotate through speed reduction of the speed reducer, the sliding block drives the push rod to move relative to the injector, and liquid in the injector is stably injected through the needle head. The