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![]() ![]() This configuration allows smaller external diameters of bronchoscopes with larger working channels and enhanced flexibility. More recent hybrid technology retains fiberoptic bundles from the distal end of the scope to the handle, where the charge-coupled device camera is located. A separate port that travels the distance of the scope can be utilized for suction, injection of saline or local anesthetic, oxygen insufflation, or passage of brushes or forceps for diagnostic purposes.Ī more recent evolution to the bronchoscope is the addition of a charge-coupled device camera, whereby a captured digital image is then transmitted electronically to an external monitor screen. ![]() A thumb control lever allows the distal tip of the scope to be flexed or extended. In brief, the fiberoptic bronchoscope consists of an eyepiece atop a control handle with a focusing ring that is attached to a thin flexible fiberscope. ![]() A separate fiberoptic bundle is attached to a light source to provide illumination, and lenses at the tip of the scope and eyepiece provide an image that can be focused by the user. An image is transmitted through the length of the scope by an organized coherent bundle of fibers that have the exact orientation at both ends of the scope. Insulation of these fibers by a glass layer with a different optical density enables transmission by internal reflection of light. The technology of fiberoptics is based on the optical characteristics of very thin (diameter of 8–25 μm) flexible glass fibers that are capable of transmitting light over their length. ![]()
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