A system, method and apparatus are provided for facilitating mechanical sinus ostial dilation in a medical setting with a device that is formed of all sterilizable constituent components. A reusable mechanical sinus dilation device is provided that is autoclavable replacing a fluid-filled balloon or bladder, i.e. a balloon/hydraulic mechanism, with mechanical structures for dilation. The mechanical sinus dilation device incorporates a radially expanding mechanical (structural) dilation mechanism. The removal of all components formed of non-autoclavable materials, e.g., plastic pieces, permits embodiments to be autoclaved, or otherwise sterilized by a combination of heat and pressure, so as to render each individual mechanical sinus dilation device according to the disclosed embodiments reusable across some plurality of sinus dilation procedures. A dilating sleeve circumferentially surrounds the radially extending movable mechanical structures in a configuration may provide an opportunity to exchange dilating sleeves between sinus dilation procedures or operations.