▎ 摘　　要

NOVELTY - Preparation of graphene-coated surgical blades involves (1) soaking small glass bottle and ultrasonically cooling with solvent, pouring the chitosan solution into glass bottle, (2) adding 40 mg graphite powder to the solution in step (1), shaking, (3) ultrasonically processing chitosan and graphene mixture, collecting the supernatant graphene dispersion by centrifuging, (4) dispersing 10 mg of titanium oxygen nanoparticles in the supernatant graphene dispersion collected in step (3), ultrasonically processing to obtain dispersion, (5) ultrasonically processing stainless steel materials used to make surgical blades with acetone, 70% ethanol and double distilled water, respectively, performing plasma treatment, (6) immersing the stainless steel in chitosan solution, supernatant graphene dispersion and titanium oxygen nanoparticles in the supernatant graphene dispersion coating dispersions respectively, and (7) drying the coated sample in an oven. USE - Preparation of graphene-coated surgical blades. ADVANTAGE - The method produces blade with high sharpness. The graphene-coated surgical blades can reduce the infection rate, and reduce the pain of the patient. The graphene coating has anti-corrosion function, and provides convenience for storing surgical blade. DETAILED DESCRIPTION - Preparation of graphene-coated surgical blades involves (1) soaking small glass bottle and ultrasonically cooling with solvent, pouring the chitosan solution into glass bottle, (2) adding 40 mg graphite powder to the solution in step (1), shaking, (3) ultrasonically processing chitosan and graphene mixture through an ultrasound processor equipped with a standard probe with an output power of 60%, collecting the supernatant graphene dispersion by centrifuging the mixture of chitosan and graphene for 60 minutes, (4) dispersing 10 mg of titanium oxygen nanoparticles in the supernatant graphene dispersion collected in step (3), ultrasonically processing through an ultrasound processor equipped with a standard probe at 60% output power for 5 minutes to obtain dispersion, (5) ultrasonically processing the stainless steel materials used to make surgical blades with acetone, 70% ethanol and double distilled water for 15 minutes, respectively, performing plasma treatment on the stainless steel obtained by the above treatment under oxygen gas to perform surface functionalization treatment, (6) immersing the stainless steel processed in step (5) in chitosan solution, supernatant graphene dispersion and titanium oxygen nanoparticles in the supernatant graphene dispersion coating dispersions respectively, and (7) drying the coated sample in an oven. The coating is applied to the surgical blade comprising metal surgical blade and graphene coating.