US Patent 11033754 Non-ablative photonic devices and related methods

A method of delivering light energy to a pathological tissue includes emitting light energy from a first optical element within a cannula, producing a substantially uniform irradiance profile from the light energy within the cannula, transmitting the light energy emitted from the first optical element through a second optical element in thermal contact with a distal end of the cannula to the pathological tissue without ablating the pathological tissue, and conducting thermal energy from the pathological tissue through the second optical element and to the cannula.