A sealed apparatus comprising a main body (1) having a divisible space (15) the divisible space (15) is divided into a first division space (16) and a second division space (17) by means of the main body (1) the main body (1) is provided with a first main body (10) and a second main body (11) the exterior of the first main body (10) is covered with light blocking material (4) and/or the light blocking material (4) is sandwiched in the first main body (10) the exterior of the second main body (11) is covered with light blocking material (4) and/or the light blocking material (4) is sandwiched in the second main body (11) the movable second main body (11) is fixed on the first main body (10), the second main body (11) moving between a first position and a second position the first main body (10) is provided with a first opening (100), and the first opening (100) is sealed when the second main body (11) is at the first position the sealed apparatus is provided with a shield (43) that at least blocks, when the second main body (11) is at the first position, one side of a gap between the light blocking material (4) on the second main body (11) and the light blocking material (4) surrounding the periphery of the first opening (100) on the first main body (10), said shield having a length greater than the gap length. The present invention solves the problem of degradation of light degradable substance under light caused by light entering the gap, thereby maintaining good light blocking. The sealed apparatus is used in the field of medical packaging material.Dispositif hermétique comprenant un corps (1) doté dun espace (15) séparable, lequel peut être séparé au moyen du corps (1) en un premier espace de séparation (16) et un second espace de séparation (17). Le corps (1) comporte un premier corps (10), dont le côté externe recouvre un matériau antiréfléchissant (4) et/ou un matériau antiréfléchissant (4) pressé contre le corps (10), et un second corps (11), dont le côté ext
