The invention relates to a disposable gynecologic instrument for dilation of body cavities by fluid injection. The instrument according to the invention includes an instrument body (1) on the bottom side of which a handle (2) is tightly fixed with the reservoir (3), while on the frontal side of the instrument body (1) projected is a trigger (4) positioned slidingly and designed for pressing with two fingers, which is by a screw (41) connected to the main piston (42) movable within the cylinder, around which a bigger spring (43) is placed and where the outlet of the cylinder is connected to one branch of the three-way pipeline (44), the other two of which are connected, one to the upper irreversible valve (12), and the other to the lower irreversible valve (22) and where on the front side of the instrument body (1) by screw thread the main pipe (5) is sealingly attached, formed with longitudinal ribs (51) positioned crosswise and a series of aslope placed ribs (52) of circular perimeter, which increase the stiffness of the main pipe (5) in which projected part is by screw thread fixed with the support (6) for the body (100) of the dilation probe with a holding fixture (7) of the dilation balloon, and where on the upper right side of the body (1) a button (8) of a squeezer with a vent protector (9) is provided, while in front of it a holder (10) for a small spring (11) of the upper irreversible valve (12) is placed.Изобретение относится к одноразовому гинекологическому инструменту, предназначенному для дилатации полостей тела путем ввода текучей среды. Предложенный инструмент содержит корпус (1), к которому снизу герметично присоединена рукоятка (2), снабженная резервуаром (3), при этом от передней части корпуса (1) выступает установленный с возможностью скользящего смещения пусковой рычажок (4), выполненный таким образом, что на него можно нажимать двумя пальцами, и прикрепленный винтом (41) к основному поршню (42), установленному с возможностью перемещения в цилиндр
