Patent ID: 11931005
Assignee: OLYMPUS CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A driving force transmission mechanism for use with an endoscope, the driving force transmission mechanism comprising:
an output member configured to be driven by a motor to rotate around a rotation axis, the output member including a hole along the rotation axis, the hole comprising an inside plane;
a rotation transmission member inserted into the hole and configured to receive a rotation driving force around the rotation axis along with a rotation of the output member, the rotation transmission member comprising:
a first plane configured to extend to a proximal end along the rotation axis on an outer circumferential surface of the rotation transmission member, a part of the first plane contacting with the inside plane of the output member when the output member rotates in a first direction;
a second plane provided on the outer circumferential surface of the rotation transmission member, the second plane being arranged along the rotation axis, the second plane configured to be inclined with respect to the first plane, a proximal end of the second plane is provided distally relative to a proximal end of the rotation transmission member, and at least part of the second plane contacting with the inside plane of the output member when the output member rotates in a second direction opposite to the first direction; and
a third plane connecting the proximal end of the second plane and the first plane to contact with a proximal end of the output member when the output member rotates with respect to the rotation transmission member in the second direction to restrict the rotation transmission member from moving distally relative to the output member.