Ophthalmic cataract suction and injection needle

The utility model discloses an ophthalmology cataract suction and injection needle, which relates to the field of medical instruments, and comprises a suction and injection needle, a connecting tube and a positioning base plate, the top surface of the positioning base plate is fixedly connected with a connecting block, the top surface of the connecting block is fixedly connected with a support rod, one side surface of the support rod is fixedly connected with a lifting chute, and the lifting chute is fixedly connected with the connecting tube. By means of the two fixing bandages movably connected to the two side faces of the positioning base plate, medical staff can conveniently fix the device to the heads of different patients, and the applicability and comfort of the device are improved; by means of the movable sleeve groove formed in the connecting pipe, the two stretching rods located in the movable sleeve groove and the two flow limiting plugs fixedly connected with the bottom ends of the stretching rods