Sinus Trocar 3.5mm 170mm — Maxillary Antrostomy

Sinus Trocar — 3.5mm 170mm Maxillary Antrostomy

The 3.5mm sinus trocar at 170mm length is the maxillary-antrostomy-drainage variant — used for the antrum-puncture-and-irrigation technique that persists in resource-limited settings as an alternative to FESS for chronic maxillary sinusitis. The 3.5mm bore provides adequate drainage flow for purulent maxillary-sinus contents while operating at the appropriate scale for the inferior-meatus access route.

The antrum-puncture technique persistence

Functional endoscopic sinus surgery (FESS) has displaced antrum puncture for most chronic-maxillary-sinusitis management in developed-country practice; the technique persists in resource-limited settings, in centres without FESS-equipped operating theatres, and in selected cases where FESS is contraindicated. The 3.5mm sinus trocar serves these residual indications. The Lichtwitz inferior-meatus approach (covered in our CN batch 3 for the Hartmann variant) and the Caldwell-Luc anterior approach both use sinus trocars in their procedural workflows.

The proof-puncture diagnostic role

Antrum puncture also serves diagnostic purposes — the proof-puncture confirms maxillary-sinus content (purulent material, mucus, or no fluid) when imaging is unavailable or equivocal. Cultures from the antrum-puncture aspirate guide antibiotic selection. The 3.5mm sinus trocar supports both diagnostic and therapeutic antrum-puncture indications.