Abstract: This composite material blade, which is formed using a composite material including reinforcing fibers and resin, and which has a positive pressure surface and a negative pressure surface, is provided with a ventral part, being the part on the positive pressure surface side in a blade thickness direction, which is the direction joining the positive pressure surface and the negative pressure surface, a dorsal part, being the part on the negative pressure surface side in the blade thickness direction, and a metal shield portion which is provided on the leading edge side, being the upstream side in a flow direction in which a fluid flows, wherein: the metal shield portion includes a main body portion provided on the leading edge side, and an embedded portion which is provided on the trailing edge side, being the downstream side in the flow direction, of the main body portion, and which is provided between the ventral part and the dorsal part; and the plate thickness of the metal shield portion in the blade thick

Abstract: An inner casing according to the present invention includes a hole which is a holding portion that is provided at the center of a base portion having a planar shape so as to protrude in a direction orthogonal to a principal surface of the base portion and hold a capsule endoscope and a plurality of step portions each protruding from a side surface of the hole and abutting on an area of an outer surface of a hemispheric dome portion, which is located inside an optical viewing angle of the capsule endoscope and which does not contribute to generation of an image captured by the capsule endoscope to realize alignment in a longitudinal direction of the capsule endoscope.