Teaching aid for principle of foldback tachycardia disease

The utility model provides a turn-back tachycardia disease principle teaching aid, which comprises a disc with a cavity structure inside, a turntable rotatably arranged inside the disc and a sphere arranged above the disc, the turntable and the disc are coaxially arranged, the top of the disc is provided with an inlet, the bottom of the disc is provided with an outlet, and the sphere is arranged above the disc. And the turntable is provided with a notch along the radial direction. The four conditions of the foldback tachycardia disease can be visually reflected, and doctors or patients can be helped to quickly understand the disease principle. 本实用新型提供了一种折返性心动过速疾病原理教具，包括内部为空腔结构的圆盘、转动设置在所述圆盘内部的转盘以及设置在所述圆盘上方的球体，所述转盘与所述圆盘同轴设置，所述圆盘顶部设置有进口，所述圆盘底部设置有出口，所述转盘沿径向开有缺口。本实用新型能够直观的体现折返性心动过速疾病的四种情况，帮助医生或者病人快速理解疾病原理。