METHODS FOR DERMAL FILLING USING MICRONEEDLES

摘要

A device and method for dermal filling using microneedles is disclosed. A microneedle device including at least two hollow microneedles arranged in at least one row, the row defining a treatment vector of the device, is used to intradermally inject a dermal filler composition into the skin of a subject along a pre-defined line in the skin where dermal filling, cosmetic repair or augmentation of tissue is desired. The device and method reduces or eliminates pain, and provides a safer, more effective administration method. The method also enables reduction in the required number of treatments (and re-treatments) due to an improved stability of the filler in these shallower depths within the skin; smoother contours due to a more even distribution of the filler within the skin; easier application for curved wrinkle lines (as opposed to hypodermic needles that are long and straight); and filling of very fine lines and wrinkles which are not accessible with regular needles.