Sinusitis, enlarged nasal turbinates, tumors, infections, hearing disorders,allergic conditions, facial fractures and other disorders of the ear, nose andthroat are diagnosed and/or treated using minimally invasive approaches and,in many cases, flexible catheters as opposed to instruments having rigid shafts.Various diagnostic procedures and devices are used to perform imaging studies,mucus flow studies, air/gas flow studies, anatomic dimension studies, endoscopicstudies and transillumination studies. Access and occluder devices may be usedto establish fluid tight seals in the anterior or posterior nasal cavities/nasopharynxand to facilitate insertion of working devices (e.g., scopes, guidewires, catheters,tissue cutting or remodeling devices, electrosurgical devices, energy emittingdevices, devices for injecting diagnostic or therapeutic agents, devices forimplanting devices such as stents, substance eluting devices, substance deliveryimplants, etc.
