Endoscope
AssigneeOlympus Optical Co., Ltd.
InventorYasuhiro Ueda
Life of this patent
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Abstract
An endoscope includes an operating section and an insertion section extending from the operating section. The insertion section has a flexible tube formed of a flexible synthetic resin and having a plurality of insertion channels extending in the axial direction of the flexible tube. A rigid member is attached to the distal end of the tube. The rigid member has through holes communicating with the channels, respectively. An objective optical system is arranged in one of the through holes. An image guide fiber is passed through one of the insertion channels, and its distal end portion is inserted fixedly in the through hole and optically connected to the objective optical system.
Claims6
An endoscope comprising:
- an operating section;
- an insertion section extending from the operating section and adapted to be inserted into a body cavity, said insertion section including a bendable tube, formed of a bendable synthetic resin, and having a distal end face, a recess formed in the distal end face, and a plurality of insertion channels extending in an axial direction of the tube and opening to a bottom surface of the recess;
- a non-bendable portion including a non-bendable member which corresponds in shape to the recess and fitted in the recess, the member having at least one through hole, communicating with one of the channels of the insertion section;
- an objective optical system arranged in the through hole of the non-bendable portion;
- and
- an image guide fiber inserted in the channel communicating with the through hole, said fiber having a distal end portion inserted fixedly in the through hole and connected optically to the objective optical system.
Dependencies are inferred from the claim text.