Patent ID: 11925324
Assignee: OLYMPUS CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 11:
12. An endoscope comprising:
an image pickup apparatus disposed on a distal end portion of an insertion section configured to be inserted into a subject, the image pickup apparatus having a direction of view on a side of the insertion section;
a base member integrally fixed to the distal end portion;
a rotary shaft configured to rotate relative to the base member; and
a raising base including a hole having an inner periphery, the rotary shaft being disposed within the hole to fix an outer periphery of the rotary shaft relative to the inner periphery of the hole such that the raising base rotates in the direction of view of the image pickup apparatus with respect to the base member by rotation of the rotary shaft when the rotary shaft is disposed within the hole, and
the rotary shaft includes a plurality of concave portions on an outer periphery of the rotary shaft, the concave portion being formed radially inward relative to a rotation axis of the rotary shaft,
each of the plurality of concave portions having a pair of side wall surfaces disposed symmetrically relative to a plane passing through the rotation axis of the rotary shaft, the pair of side wall surfaces being disposed so as to be at a right angle relative to each other or disposed so as to be an obtuse angle relative to each other.