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TWO NEW FEATURES FOR THE NASOPHARYNGOSCOPE AND ALLIED INSTRUMENTS: Revision of the Lighting System and a New Type of Direction Finder

TWO NEW FEATURES FOR THE NASOPHARYNGOSCOPE AND ALLIED INSTRUMENTS: Revision of the Lighting... This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables. Abstract The nasopharyngoscope is an adaptation of the cystoscope. It differs from the parent instrument in size, and its lamp and lenses are in a fixed unit. In the majority of cystoscopes the lamp is fixed to the sheath and the sheath in turn slides over the lens portion of the instrument. My improvements are adaptable to all forms of illuminating observation telescopes used by members of the medical profession. The nasopharyngoscope is a tubular telescope of small caliber (about 10.5 F). It is made up of two essential parts: (1) a series of lenses and a prism for the observation of the field of vision and (2) a lighting system to illuminate the field of vision. The field of vision is the image seen through the eyepiece of the nasopharyngoscope. This is brought about by the series of lenses and the prism. The field of illumination is the portion http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Otolaryngology American Medical Association

TWO NEW FEATURES FOR THE NASOPHARYNGOSCOPE AND ALLIED INSTRUMENTS: Revision of the Lighting System and a New Type of Direction Finder

Archives of Otolaryngology , Volume 21 (6) – Jun 1, 1935

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Publisher
American Medical Association
Copyright
Copyright © 1935 American Medical Association. All Rights Reserved.
ISSN
0003-9977
DOI
10.1001/archotol.1935.00640020734011
Publisher site
See Article on Publisher Site

Abstract

This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables. Abstract The nasopharyngoscope is an adaptation of the cystoscope. It differs from the parent instrument in size, and its lamp and lenses are in a fixed unit. In the majority of cystoscopes the lamp is fixed to the sheath and the sheath in turn slides over the lens portion of the instrument. My improvements are adaptable to all forms of illuminating observation telescopes used by members of the medical profession. The nasopharyngoscope is a tubular telescope of small caliber (about 10.5 F). It is made up of two essential parts: (1) a series of lenses and a prism for the observation of the field of vision and (2) a lighting system to illuminate the field of vision. The field of vision is the image seen through the eyepiece of the nasopharyngoscope. This is brought about by the series of lenses and the prism. The field of illumination is the portion

Journal

Archives of OtolaryngologyAmerican Medical Association

Published: Jun 1, 1935

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