The application provides a micro-
liquid injection system and a method thereof, and relates to the technical field of medical devices, and solves the technical problem of inconvenient use of an
injection device for subretinal
drug injection used in the prior art. The
system comprises an injection cylinder, a
piston, a connecting hose, a transfusion connector, a needle, and a connecting piece. The
piston is arranged in the injection cylinder. The injection cylinder is connected with the needle through the transfusion connector and the connecting hose. The injection cylinder is connected with a vitreous body
cutting and
ultrasonic emulsification integrated
machine (hereinafter referred to as a vitreous body
cutting machine) through the connecting piece. The application provides a micro-
liquid injection system. By adding the transfusion connector, unidirectional conduction and instantaneous
positive pressure can be generated, so that the injection of bubbles can be avoided as much as possible when an ophthalmologist or the like performs
drug injection. The connecting hose is arranged between the injection cylinder and the needle, the distance between the injection cylinder and the needle is increased, and a nurse can observe the display on the
syringe to remind the doctor of the
drug injection amount.