Self-limiting drip chamber of infusion apparatus

The utility model provides a self-limiting drip chamber of an infusion apparatus, which comprises a drip chamber body and a liquid inlet pipe, and the liquid inlet pipe is arranged at the top of the drip chamber body and extends into a drip chamber cavity; the top of the drip chamber body is further provided with a tubular core column which extends into the drip chamber cavity and is longer than the liquid inlet pipe, and a waterproof breathable film is fixed to a core column hole. The self-limiting drip chamber of the infusion apparatus is simpler in structure, easier to manufacture and lowerin cost. 本实用新型提供一种输液器自限位滴斗，包括滴斗本体、进液管，所述进液管设置在滴斗本体的顶部并延伸至滴斗腔内；所述滴斗本体顶部上还设置有延伸至滴斗腔内且长度大于进液管的管状芯柱，芯柱孔固定有防水透气膜。所述输液器自限位滴斗结构更为简单，更易制作，成本更低。