Patent ID: 7955367
Filing Date: 2011-06-07
Classification: A61N

Abstract:
1. A handpiece for treating biological tissue, comprising: a source of electromagnetic radiation; a nonlinear waveguide positioned to receive electromagnetic radiation from the source, the nonlinear waveguide comprising: an optical output element near one of the first and second ends of the nonlinear waveguide; wherein the fluorescent substance is configured to absorb the electromagnetic radiation from the source through the wall and generate fluorescent light in response to the electromagnetic radiation, wherein the nonlinear waveguide is configured to guide the fluorescent light emitted by the fluorescent substance towards the optical output element by internally reflecting at least a portion of the fluorescent light, and wherein the optical output element is configured to direct the fluorescent light towards biological tissue; a fluid conduit in fluid communication with the input and output ports; and a fluid circulation system in fluid communication with the first and second ends of the passage and adapted to circulate the fluorescent substance from the first end to the second end through the passage and from the second end back to the first end through the fluid conduit.