Body cavity illumination system
A cavity illumination system according to the present disclosure may include one or more illumination elements composed of a transparent or semi-transparent, biocompatible sterilizable polymer and one or more illumination sources. The sterilizable polymer operates as a waveguide. An illumination element may incorporate micro structured optical components such as for example gratings, prisms and or diffusers to operate as precision optics for customized delivery of the light energy. The micro structured optical components may also be used to polarize and/or filter the light energy entering or exiting the illumination element.
1. A cavity illumination system comprising:
a laryngoscope having a handle and a blade, said blade having an upper surface, a lower surface, a distal end, and a proximal end, wherein the blade is adapted to engage tissue and prevent the tissue from obstructing the cavity;
an illumination waveguide sized and dimensioned to engage and conform to the blade, the waveguide having an upper portion, a lower portion, a distal end for emitting light, and a proximal end for receiving light, wherein the blade is adapted to be disposed between the tissue and the illumination waveguide, and
wherein thickness of the illumination waveguide changes between the proximal and distal ends thereof;
a plurality of light directing facets formed in the lower portion of the waveguide for directing light laterally out through the upper portion of the waveguide towards a particular anatomical area, the plurality of light directing facets directing the light through refraction;
a plurality of output optical structures formed in the upper portion of the waveguide for directing light from the upper portion of the waveguide laterally to the particular anatomical area, the plurality of output optical structures directing the light through refraction; and
an illumination source in optical communication with the proximal end of the waveguide.
2. The cavity illumination system of claim 1 wherein the output optical structures on the upper portion comprise one or more facets.
3. The cavity illumination system of claim 2 , wherein the one or more facets comprise stair stepped facets.
4. The cavity illumination system of claim 1 wherein the output optical structures on the upper portion comprise micro-optical structures.
5. The cavity illumination system of claim 1 wherein the illumination waveguide conducts light from the proximal end to the distal end using total internal reflection.
6. The cavity illumination system of claim 1 , wherein the upper and lower portions are fiat.