Trans-Nasal Maxillary Multi-Sinus Balloon Dilation Study

This is a prospective, non-randomized, single arm, post-approval study conducted under a common protocol designed to evaluate outcomes following trans-nasal balloon dilation of the maxillary sinus outflow tract with or without concurrent balloon dilation of the frontal or sphenoid sinuses and without any concomitant conventional sinus surgery (ie, uncinectomy, complete or partial ethmoidectomy).

Inclusion criteria

• Be at least age 18 years old or older.
• Be a candidate for transnasal balloon dilation of the maxillary sinus(es) with or without balloon dilation of the frontal or sphenoid sinus(es) using XprESS consistent with the device's Indication for Use.
• Have a sinus CT scan within 12 months of the procedure date.
• Be able and willing to provide consent.
• Be willing to comply with the protocol requirements.

Exclusion criteria

• Have any prior maxillary sinus surgery (eg, antrostomy, uncinectomy).
• Require any concomitant endoscopic sinus surgery (ESS) or nasal surgery (exception: turbinate reduction) at the time of the study procedure.
• Have any nasal surgery (eg, septoplasty) or nonmaxillary sinus surgery (eg, frontal sinusotomy, sphenoidotomy, full/partial ethmoidectomy) performed within 3 months prior to enrollment.
• Have presence of features consistent with sinus fungal disease.
• Be allergic to nickel or barium sulfate.
• Be currently participating in any other drug or device clinical studies excluding postapproval or marketing registry studies.