Gastroscope
A gastroscope is an endoscope that is used to continuously visualize the mucous membrane of the esophagus , stomach and duodenum ( gastroscopy ). For this purpose, an optical unit, usually a camera chip, is inserted into the mouth via a flexible tube that is firmly connected to the optics and pushed forward. This hose is used to transmit power between the examiner and the optics chip, it also houses a fiber optic cable for illumination, image transmission cables, cables, a channel for rinsing the optics and a working channel for auxiliary equipment such as forceps, syringe needles, clips and loops. This enables interventions such as the removal of tissue growths ( tumor ), hemostasis and the removal of tissue samples. Liquids can also be sucked out of the stomach via the working channel or larger quantities of irrigation fluid can be introduced.
The hose is flexible and has only low restoring forces . Only at the tip of the device can an approximately ten centimeter long section be angled by up to 180 ° by the examiner.
More recent developments allow imaging with light of defined wavelengths , there are also zoom endoscopes that allow freely adjustable magnification, and endoscopic microscopy is also being tested in some centers.
See also
See also → -skop