Insertion device and endoscope
AssigneeOlympus Corporation
InventorYutaka Masaki
Life of this patent
Estimating the term…
Abstract
An insertion device includes an insertion portion in which a movable member is held in contact with an outer circumferential surface of a hollow cylindrical member. When drive power is transmitted from the hollow cylindrical member to the movable member as the hollow cylindrical member is rotated about a longitudinal axis of the insertion portion, the movable member is rotated around its own axis parallel to the longitudinal axis and moved around the longitudinal axis. The insertion portion includes a membrane covering the movable member from an outer circumferential side thereof. The membrane urges the movable member toward the longitudinal axis, thereby pressing the movable member against the outer circumferential surface of the hollow cylindrical member.
Claims13
An insertion device used in an endoscope system comprising:
- an insertion portion extending along a longitudinal axis;
- the insertion portion including:
- a hollow cylindrical member having a central axis corresponding to the longitudinal axis, having an outer circumferential surface and rotatable about the longitudinal axis by a drive power transmitted to the hollow cylindrical member;
- at least one movable member being held in contact with the outer circumferential surface, the movable member being rotatable about an axis thereof parallel to the longitudinal axis and movable around the longitudinal axis when the drive power is transmitted to the movable member from the hollow cylindrical member while the hollow cylindrical member is rotated around the longitudinal axis;
- and
- a membrane forming a part of an outer circumferential surface of the insertion portion in covering relationship with respect to the movable member from an outer circumferential side thereof, the membrane being flexible and urges the movable member toward the longitudinal axis and presses the movable member against the outer circumferential surface of the hollow cylindrical member.
An endoscope comprising:
- a mount tool;
- and
- an insertion portion extending along a longitudinal axis, wherein the insertion portion including:
- a hollow cylindrical member having a central axis corresponding to the longitudinal axis having an outer circumferential surface and being rotatable about the longitudinal axis by a drive power being transmitted to the hollow cylindrical member;
- at least one movable member being held in contact with the outer circumferential surface, the movable member being rotatable about an axis thereof parallel to the longitudinal axis and being movable around the longitudinal axis when the drive power is transmitted to the movable member from the hollow cylindrical member while the hollow cylindrical member is being rotated around the longitudinal axis;
- and
- a membrane forming a part of an outer circumferential surface of the insertion portion in covering relation to the movable member from an outer circumferential side thereof, the membrane being flexible and urges the movable member toward the longitudinal axis and presses the movable member against the outer circumferential surface of the hollow cylindrical member, wherein
- the mount tool is mounted on the insertion portion in covering relationship with respect to the outer circumferential side of the membrane, wherein the drive power being transmitted to the mount tool from the movable member when the movable member is moved around the longitudinal axis.
Dependencies are inferred from the claim text.