Olympus Corporation

Olympus Medical Systems Corporation

Taro Iede

Hirokazu Tanaka

Yoshiaki Ito

Manabu Miyamoto

Hajime Tamura

Hideya Kitagawa

A flexible tubular portion of an endoscope includes a spiral tube portion. The spiral tube portion includes a closely wound portion to at least a part of which an initial tension is applied, and a sparsely wound portion provided at least at one end of the closely wound portion.

Flexible tubular portion of endoscope and endoscope having this flexible tubular portion

A medical treatment endoscope includes: an insertion portion which has a lumen formed along a longitudinal axis of the insertion portion and is configured to be inserted into a body cavity, a lateral opening portion which extends in a lateral surface of the insertion portion, from a distal end surface of the insertion portion to a proximal end side of the insertion portion, an elastic member which is provided in an inner wall of the lumen at a position separated from an edge of a proximal end of the insertion portion in a direction toward a distal end side of the insertion portion, and a tubular arm which includes a bendable bending part provided at a distal end side of the tubular arm.

Medical treatment endoscope with a positioning mechanism

Provided is a medical treatment endoscope including: an endoscope main body which includes an elongated insertion portion having a lumen and an image capturing mechanism disposed in a distal end of the insertion portion; an arm which is able to be inserted into or extracted from the lumen and has a treatment tool lumen for allowing an endoscope treatment tool to be inserted therethrough; and a positioning mechanism which positions a part of the arm inserted through the lumen with respect to the endoscope main body.

An endoscope main body constituting an endoscope in a state in which an elongated detachable observation optical system is attached to the endoscope main body, and in a proximal end of an insertion section of the endoscope main body, a branch member is disposed. The branch member is provided so that a first extended section and a second extended section are branched from each other and thereby first and second operating sections are separately arranged. Furthermore, the branch member has an opening as an inlet which guides an imaging module in a distal end of the observation optical system to a hard portion of the insertion section.

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Hachioji, Japan

Taro Iede