I have felt the need of an instrument which would be useful in visualizing the openings of the various sinuses, and in probing them under direct vision, although I realize that rhinolaryngologists are overburdened with armamentarium. I also thought that it would be feasible to insert such an instrument within a sinus like the antrum or sphenoid.
There have been, to my knowledge, only two instruments which have made a step toward progress in this direction. In the antrascope of Dr. Speilberg the principle of the nasopharyngoscope was applied to a cannula, and one was able to insert the instrument into the antrum and to visualize at right angles only. This instrument did not have any operating possibilities. Another instrument, the account of which was published in Laryngoscope by Dr. Maltz which was an improvement over Spielberg's instrument, had a little more than right angle vision (20 per cent) and
MORSE S. AN OPERATING AND VISUALIZING SINUSCOPE: Preliminary Report. Arch Otolaryngol. 1929;9(3):313–316. doi:10.1001/archotol.1929.00620030331011
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