Abstract: An endoscope includes a main body portion that has a housing recession portion that houses an elevator, a drive member arrangement space that houses a drive member and is closed off from the housing recession portion, a lid insertion space that puts the drive member arrangement space and an outer space into communication, and a lid member that can be inserted into the lid insertion space and liquid-tightly closes off the lid insertion space when inserted. Also provided is a fitting/holding member that is fitted to the lid member inserted into the lid insertion space and is fixed to the main body portion, wherein the lid member has a protruding portion, and the fitting/holding member can be inserted into the drive member arrangement space in a direction that is different from a protruding direction of the protruding portion of the lid member.

Abstract: An endoscope includes: an elevator configured to swing such that an instrument provided in an insertion portion of the endoscope changes a protruding direction; a shaft member configured to rotate about an axis, the elevator being provided on an end portion of the shaft member on one side in an axial direction that extends along the axis, the shaft member supporting the elevator on one side in the axis direction, and the shaft member being configured to be capable of rotating integrally with the elevator about the axis; a drive member that is fixed to an intermediate portion of the shaft member in the direction along the axis, and is configured to input, to the shaft member, rotation force for rotation of the shaft member about the axis; and a first bearing and a second bearing that support the shaft member so as to be capable of rotating.

Abstract: An endoscope includes: an elevator configured to swing such that an instrument provided in an insertion portion of the endoscope changes a protruding direction; a shaft member configured to rotate about an axis, the elevator being provided on an end portion of the shaft member on one side in an axial direction that extends along the axis, the shaft member supporting the elevator on one side in the axis direction, and the shaft member being configured to be capable of rotating integrally with the elevator about the axis; a drive member that is fixed to an intermediate portion of the shaft member in the direction along the axis, and is configured to input, to the shaft member, rotation force for rotation of the shaft member about the axis; and a first bearing and a second bearing that support the shaft member so as to be capable of rotating.

Abstract: An endoscope includes: an elevator configured to swing such that an instrument provided in an insertion portion of the endoscope changes a protruding direction; a shaft member configured to rotate about an axis, the elevator being provided on an end portion of the shaft member on one side in an axial direction that extends along the axis, the shaft member supporting the elevator on one side in the axis direction, and the shaft member being configured to be capable of rotating integrally with the elevator about the axis; a drive member that is fixed to an intermediate portion of the shaft member in the direction along the axis, and is configured to input, to the shaft member, rotation force for rotation of the shaft member about the axis; and a first bearing and a second bearing that support the shaft member so as to be capable of rotating.