FIELD: medicine.
SUBSTANCE: invention relates to medicine and can be used for objective determination of size of tumour-like formations of gastrointestinal tract in carrying out gastroscopy or colonoscopy. Device contains catheter with applied on its working end measurement scale with located inside flexible rod, installed into endoscope. From the working side, close to the butt end, catheter has longitudinal break and when rod is displaced relative to catheter with rest of the butt end against projection, located at the rod end, formed are perpendicular to catheter rulers with scales, obtained when strips formed by break are folded in half.
EFFECT: carrying out objective endoscopic measurements of tumour-like formations of gastrointestinal tract.
2 cl, 2 dwg
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