A jet spray instrument (Syrijet) has been used in nasal septal surgery and rhinoplastic surgery. The function of the instrument is to allow the most minimal discomfort when injecting, by needle, local anesthetics. This technique eliminates the need for routine packing of the nasal mucosa with cotton pledgets soaked with topical solutions of tetracaine (Pontocaine), cocaine, or lidocaine (Xylocaine). There is no damage to the nasal mucosa if the jet spray instrument is held in gentle contact with the mucosa and is both perpendicular and immobile at the specific site at the moment of injection. At times, a little blood may seep from the jet spray surface. This is of no consequence, actually it helps further define the point for needle introduction. Ideal sites are illustrated in this article, but additional ones may be administered without any concern for undue reactions.
Wolff L. Jet Spray in Nasal Surgery. Arch Otolaryngol. 1971;93(3):327–329. doi:10.1001/archotol.1971.00770060465018
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