Systems and methods for treating conditions and diseases of the spine are disclosed herein. A device includes a balloon catheter comprising at least one inner lumen incorporated within an elongated shaft； a distal end having an inner balloon positioned inside and completely surrounded by an outer balloon； and a proximal end having an adapter for passage of at least one of an inflation fluid or a medical instrument； and an optical fiber comprising an outer diameter sized to pass through the inner lumen of the elongated shaft； a nonlinear light-emitting portion of a given length, wherein a portion of a cladding material from the nonlinear light-emitting portion has been removed so that light energy may be emitted along the length of the nonlinear light-emitting portion； and a linear elongated portion for guiding light towards the nonlinear light-emitting portion.
