PROBLEM TO BE SOLVED: To provide an ocular instillation nozzle structure which can achieve all the objectives of preventing liquid from remaining, preventing the liquid from overflowing and preventing the adhered chemical from pooling.SOLUTION: A closing member 7b is fitted to the inside of a lower opening of a doughnut-shaped annular space 75 between an inner cylinder wall 72 and an outer cylinder wall 74 which are connected with each other by a flange 73 on their upper side from the underside for closing the lower opening. An inlet hole 711 having a minute diameter for communicating an inner space 20 of a container body 2 with a nozzle hole 71 is formed through the closing member 7b. Even when an eyedropper is inverted, the liquid in the inner space 20 never gains entrance to the doughnut-shaped annular space and the liquid can be prevented from remaining. The volume expansion of the liquid in the inner space 20 due to the difference in temperature can be reduced by the volume of the nozzle hole 71.COPYRIGHT: (C)2012,JPO&INPIT【課題】 残液発生の抑制、液溢れ発生の抑制、付着薬液の溜まり発生の抑制の全てを同時に解決し得る点眼ノズル構造を提供する。【解決手段】 鍔部73により上側で互いに連結された内筒壁72と外筒壁74との間のドーナッツ環状の空間75の下側開口に対し、閉止部材7bを下側から内嵌させ、下側開口を閉止する。閉止部材7bに、容器本体2の内部空間20とノズル孔71とを連通させる微小径の入口孔711を貫通形成する。点眼容器を倒立状態にしても、内部空間20の液体がドーナッツ環状の空間に入り込むことはなく、残液の発生を回避し得る。ノズル孔71の容積により温度差に起因する内部空間20の液体の容積膨張を緩和し得る。【選択図】 図8
