| 摘要 |
A method and apparatus can be provided for directing a substance and electromagnetic radiation to a particular location in a biological tissue, for example, to inject and cure a cosmetic filler in situ. The apparatus can include a needle configured to be inserted into the tissue, and a waveguide configured to direct the electromagnetic radiation, such as optical energy, to a location proximal to the needle tip. The substance can be injected into the tissue through the needle and irradiated by the optical energy. In addition, the exemplary method and apparatus can be provided for determining the location of the needle tip in a biological tissue based on characteristics of light directed through the waveguide and emitted proximal to the needle tip. For example, intensity of the emitted light can indicate whether the needle tip is located inside or outside of a blood vessel. |
