Patent ID: 6528086
Filing Date: 2003-03-04
Classification: A61K,A61P,Y10S

Abstract:
A method of anesthetizing a human body surface comprising the steps of:applying a formulation to a human body surface, said formulation comprising: a local anesthetic; a conversion agent to facilitate a transformation of said formulation from an initial liquid phase to a peelable coherent, solid phase; a vehicle medium comprising an evaporable solvent; converting said formulation to said coherent, solid phase after said formulation is applied to said human body surface by evaporating said evaporable solvent from said formulation; and controlling the delivery of said local anesthetic into said human body surface by controlling the evaporation time of said evaporable solvent and conversion of said formulation into said peelable coherent, solid phase, wherein said local anesthetic is delivered into said human body surface at a determined and calculated rate sufficient to anesthetize said human body surface during evaporation of said evaporable solvent, said local anesthetic delivery continuing until and is completed upon the substantial evaporation of said evaporable solvent and conversion of said formulation into said coherent solid phase.