To provide a drinking apparatus having higher reliability aerator, the present invention relates to infant drinking device. The infant drinking system (1), the nipple (10) reservoir for holding a liquid (60) aerators (31), such as and duckbill valve connector (50) of said infant drinking apparatus (1) comprises the reservoir (60) by said connector (50) is detachably connected to the nipple (10), wherein the aerator is deformable opening, for example because it contains a slit, said opening (35) When in the open position, the pressure difference between the inside and outside during use of the device by putting the air (1) through an opening the reservoir (60) is reduced, the case where the opening is in the closed position , fluid leakage to the outside is prevented in the drinking device from the inside of the drinking system (1) (1), wherein the aerator (31) is included in said connector (50) or the nipple (10), said nipple (10), when assembling the connector (50) and said reservoir (60), the geometrical properties and / or material properties of the combination of said nipple and said connector, said opening of said aerator (31) ( defined minimal deformation of 35) occurs.より信頼性の高いエアレータを有する飲用装置を提供するために、本発明は乳幼児飲用装置に関する。当該乳幼児飲用装置(1)は、乳首(10);液体を保持するための貯蔵部(60);前記乳幼児飲用装置(1)のコネクタ(50);及びダックビル弁などのエアレータ(31);を含み、前記貯蔵部(60)は、前記コネクタ(50)によって前記乳首(10)に着脱可能に連結され、前記エアレータは変形可能な開口部、例えばスリットを含むため、前記開口部(35)が開放位置にある場合、前記開口部を介して前記貯蔵部(60)に空気を入れることで前記装置(1)の使用時の内外の圧力差が低減され、前記開口部が閉鎖位置にある場合、前記飲用装置(1)の内側から前記飲用装置(1)の外側への流体の漏出が妨げられ、前記エアレータ(31)は前記コネクタ(50)又は前記乳首(10)に含まれ、前記乳首(10)、前記コネクタ(50)及び前記貯蔵部(60)を組み立てる際に、前記乳首及び前記コネクタの組み合わせの幾何学的特性及び/又は材料特性によって、前記エアレータ(31)の前記開口部(35)の規定された最小限の変形が生じる。
