Olympus Corporation

Ryosuke Ishizaki

Takehiro Nishiie

Hiroaki Miyoshi

An insertion device includes an insertion section extending along a longitudinal axis, a rotor provided in the insertion section rotating around the longitudinal axis, and an assistance tool attached to the insertion section in a state to cover the rotor from an outer peripheral side. The assistance tool rotates around the longitudinal axis together with the rotor when press force is applied from a first projection of the rotor to a second projection of the assistance tool by a rotation of the rotor. An angular position of the second projection around the longitudinal axis can be recognized from an outside of the assistance tool.

Insertion instrument and insertion device

An insertion instrument includes a rotating member rotatable around a rotation axis, and adjacent portions adjacently provided on both sides of the rotating member in the direction along the rotation axis. The insertion instrument includes a cover tube forming a part of an outer surface of an insertion section and provided in an elastic deformation state so as to apply elastic force toward an inner peripheral side of the insertion section. A position of the rotating member in the direction along the rotation axis is adjusted by the elastic force, whereby a state where both ends of the rotating member in the direction along the rotation axis are located apart from the adjacent portions is maintained.

An insertion device includes a rotor rotating around a first revolution axis, and an assist tool attached to an insertion section with covering the rotor from an outer peripheral side. An assist tool rotates together with the rotor around a second revolution axis when press force is applied from a first protrusion of the rotor to a second protrusion of the assist tool by rotating of the rotor. The first revolution axis of the rotor and the second revolution axis of the assist tool move closer to each other when the rotor and the assist tool are rotating together.

Insertion device

A driving force transmission mechanism includes a first member being arranged inside an insertion section of an insertion apparatus extending along a predetermined axis, a second member being arranged to be positioned on a movement locus in a circumferential direction of the first member. The mechanism includes a cover member as an outer coat of the insertion section. The cover member is arranged between the first member and the second member to come in contact with at least the second member. The mechanism also includes an indicator being provided on the cover member. The indicator indicates in the cover member a change in state of a surface in contact with the second member.

Driving force transmission mechanism

An endoscope includes an insertion section including first and second bending portions, a first bending drive mechanism to bend the first portion in the upward direction, first and second distal side-traction members passing inside the insertion section and a proximal side-traction member. The first portion can bend in the upward direction. The second portion is on a proximal side of the first portion and can bend in the upward direction and in right and left directions along a circumferential direction of the upward direction. The first distal side-traction member is fixed to a position of the second portion, separated from the upward direction toward the right. The second distal side-traction member is fixed to a position of the second portion, separated from the upward direction toward the left direction. The proximal side-traction member pulls the first and second distal side-traction members in conjunction with the first bending drive mechanism.

Growing community of inventors

Fuchu, Japan

Ryosuke Ishizaki