A non-sterile, prefabricated (non-customized), tubular device designed to be temporarily placed in the nasal cavity to improve nasal patency, typically in cases of collapse or hyperplasia. It consists of a self-expanding mesh structure made of metal [e.g., nickel-titanium alloy (Nitinol)], and is intended to be self-introduced through a nostril; devices associated with insertion and cleaning of the device may be included. This is a reusable device.