Novel anesthetic syringe for gynaecology and obstetrics

The utility model relates to the field of medical instruments, in particular to a novel anesthetic syringe for gynaecology and obstetrics. The novel anesthetic syringe comprises a negative-pressure cylinder, a long catheter and a medicine spraying head. A piston is arranged in the negative-pressure cylinder, scales are disposed on the outer wall of the negative-pressure cylinder, the front end of the negative-pressure cylinder is fixedly connected with the long catheter, the tail end of the medicine spraying head is provided with a nut, the outer wall of the front end of the long catheter is provided with threads matched with the inner wall of the nut, the medicine spraying head and the long catheter are fixedly connected in a screwed mode through the threads and the nut, and multiple medicine outlet holes are formed in the medicine spraying head; the long catheter is made of hard plastic, and the length of the long catheter ranges from 10 cm to 14 cm; the medicine outlet holes in the medicine spraying head a