Special implant needle implantation Put the catgut into the special needle Local anesthesia Insert with 15-45 degree angle till the catgut was sent into the skin ●Insert0.5 cm further e Withdraw the needle ●Routine processSpecial implant needle implantation Put the catgut into the special needle Local anesthesia Insert with 15- 45 degree angle till the catgut was sent into the skin Insert 0.5 cm further Withdraw the needle Routine process