US Patent 9271637 Solid state illumination for endoscopy

A device for illuminating a body cavity may include an elongate tube, at least one lens element, and at least one deployable element. The elongate tube may include an internal lumen extending between a distal opening at a distal end and a proximal opening at a proximal end opposite the distal end. The at least one lens element may extend substantially across a diameter of the internal lumen of the elongate tube. The at least one deployable element may include a light source. The at least one deployable element may be operably coupled to a region of the elongate tube proximate the distal end and may be configured to be moved between an insertion position and a deployed position.