A training model for endoscopic investigation and the treatment of hollow organs. The training model includes a chamber intended for accommodating the hollow organ with a chamber wall, at least one inlet fastened in the chamber wall with a coupling device to which the hollow organ can be coupled for the introduction of an endoscope through the inlet into the hollow organ, a connection in the chamber wall to which can be coupled a suction pump for the generation of a negative pressure in the chamber and a moulding in the chamber comprising a cavity into which the coupling device opens out and which is adapted to an outer contour of the hollow organ and into which the hollow organ can be inserted. The generation of a negative pressure allows the hollow organ to be widened in accordance with natural conditions.

 
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