CAPSULAR MEDICAL INSTRUMENT

摘要

A reed switch (52a) is disposed at a generally central position of a symmetrical shape of a sealed container (7). For example, the reed switch (52a) is disposed at a position on a center axis (L) of rotation symmetry in the sealed container (7) having a rotation-symmetrical shape. Alternatively, the reed switch (52a) is disposed at a position on a mirror symmetry plane (M) in the sealed container (7) having a mirror-symmetrical shape. As a result, even if the orientation of the sealed container (7) is changed to the direction of symmetry and the sealed container (7) is contained in a package (100), the magnetic field of a permanent magnet (100a) provided to the package (100) acts on the reed switch (52a). Therefore, the reed switch (52a) can be reliably operated with respect to an external magnetic field.