The invention discloses a slow-release dressing for local surface long-acting
anesthesia and a preparation method of the slow-release dressing, and belongs to the technical field of
anesthesia dressings. The preparation method of the slow-release dressing for local surface long-acting
anesthesia is used for solving the technical problems that in the prior art, the slow-release rate of an anesthesia dressing cannot be adjusted according to the tolerance of a patient to anesthetics, and the
duration time of the anesthesia dressing needs to be further prolonged. Comprising the following steps: uniformly
coating skin-friendly base cloth with anesthesia sustained-release gel to form an anesthesia sustained-release layer on the
skin-friendly base cloth;
coating the top of the anesthesia sustained-release layer with composite gel to form a water-absorbing and moisturizing layer; laying an antibacterial non-
woven fabric on the top of the water-absorbing and
moisture-preserving layer to obtain a primary
anesthetic dressing product. The anesthesia sustained-release gel and the composite gel are matched with each other, so that the
duration time of the anesthesia dressing is effectively prolonged, the release rate of the
anesthetic in the anesthesia dressing can be adjusted according to the tolerance of a patient to the
anesthetic, and the anesthesia effect of the anesthesia dressing is improved.