PARANASAL OSTIUM FINDER DEVICES AND METHODS

摘要

A device for locating and dilating a natural ostium of a maxillary sinus is described. The device includes an elongate shaft (404) with a substantially rigid proximal portion and a curved distal portion. An atraumatic distal tip (424) of the shaft is at the end of the curved distal portion. The curved distal portion has a size and shape to allow passage of the distal portion into a nasal cavity to position the distal tip within or near a maxillary sinus ostium. An inflation lumen passes through the shaft and at least one expandable dilator balloon (426) is coupled with the distal portion of the shaft in fluid communication with the inflation lumen. The dilator balloon expands asymmetrically outward away from an inner radius of curvature of the curved distal portion of the shaft. The atraumatic distal tip may be a ball-shaped tip for enhancing tactile feedback when locating the maxillary sinus ostium, which is encapsulated by the expandable dilator balloon.