Paranasal ostium finder devices and methods

摘要

Devices and methods for locating sinus ostia and positioning a guide wire within the sinus ostia. The subject devices include a shaft having a distal end, a proximal end, a curved region located between the distal and proximal ends, and an interior channel, an extensible and retractable guide wire movably mounted within the interior channel and a probe tip joined to the guide wire. Certain devices further include expandable portions for engaging and treating body anatomy.

主权项

1. A device for locating and dilating a natural ostium of a maxillary sinus, the device comprising;
(a) an elongate shaft assembly, comprising:
(i) a substantially rigid straight proximal portion,(ii) a curved distal portion extending from a distal end of the straight proximal portion,(iii) an atraumatic distal tip at the end of the curved distal portion, wherein the curved distal portion has a size and shape to allow passage of the distal portion into a nasal cavity to position the atraumatic distal tip within or near a maxillary sinus ostium, and(iv) an inflation lumen passing through at least part of the shaft assembly; and (b) at least one expandable dilator coupled with the shaft assembly, wherein the expandable dilator extends from the distal end of the straight proximal portion to a distal end of the curved distal portion and encompasses the curved distal portion therebetween, wherein the expandable dilator is in fluid communication with the inflation lumen; wherein the atraumatic distal tip comprises a ball-shaped tip for enhancing tactile feedback.