FIELD: medical engineering. SUBSTANCE: object of this invention is investigation of diverse sections of intestine. Catheter incorporates body 1 which is hollow flexible tube and feed passage 2 which communicates with source of cleansing liquid. Feed passage 2 and centrally disposed outlet passage 3 are separated from one another. Outlet passage 3 encloses endoscope 4 whose working portion protrudes from body 1 and carries inflatable transparent sac 5. Pyriform inflatable bottle 6 is hermetically secured at end of hollow tube on its external surface and has sprinkling openings 7 on its end face. Bottle 6 communicates with feed passage 2 and source of cleansing liquid. Catheter is provided with electric pressure gage 8 which is in communication with intestinal cavity by tube 9. EFFECT: prevention of injures to mucous membrane. 2 dwg
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