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Modern bronchoscopy with the ever-growing tasks for the bronchoscopist demands an absolutely perfect armamentarium. It is true that the more mechanical instruments for this branch of surgery, for instance, bronchoscope tubes, excision forceps, and foreign-body forceps, have shown marked improvement during the last decades, but the purely optical instruments, i. e., the telescopes—though of highest importance—were hardly improved at all during the later years. The most important qualities of an adequate optical system for bronchoscopes are, primarily, a perfect illumination system which directs the light upon the objective as intensely as possible and, secondarily, a lens system with a high quality of light transference which can be focused from a very near distance to an infinite one.
In my opinion, the bronchotelescopes used up to now in our hospitals do not answer the demands mentioned above. Together with M. Aust, an engineer from the firm of Kifa in Stockholm, I
SÖDERBERG F. NEW BRONCHOTELESCOPES. AMA Arch Otolaryngol. 1952;56(6):639–641. doi:10.1001/archotol.1952.00710020664008
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