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Methodology for implantation of indwelling catheter and sinus irrigation.
Notes: (A) A plastic catheter connected with an end-enlarged stainless steel needle (arrow) is being tunneled under the dorsum. (B) The catheter is secured in place by fixation of the enlarged needle end under the skin (*). (C) The plastic end is inserted in the right maxillary sinus. (D) Topical nasal irrigation method.
Abbreviation: SF-NS, silk fibroin–nano silver.
