A needleless syringe for topical anesthesia

摘要

The present invention provides a syringe for injecting anesthesia into the urethra of a patient with urinary tract disease, comprising: a push rod (10) having a piston (15) at its tip; A cartridge (20) for receiving anesthetic medicine on a space formed with the push rod (10) and having an orifice (25) at its tip; And a protective cap 30 that is hermetically coupled to the orifice 25 of the cartridge 20. In addition, the orifice 25 of the cartridge 20 according to the present invention is provided with an outer gradient 25a and an inner gradient 25b, the protective cap 30 is a peripheral projection 32 and the center sealing rod It is a double sealing structure by 35. ; Accordingly, an anesthetic agent may be efficiently introduced into the urethra of the patient with the urinary tract disease instead of the catheter, thereby providing a sterilization function, a lubricating function, and an anesthetic function prior to the diagnosis or surgery of the urinary system. ; Syringe, urinary tract, urethra, anesthesia, endoscope