Endoscope
AssigneeOlympus Medical Systems Corp.
InventorHiroki Moriyama
Life of this patent
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Abstract
An endoscope includes a flexible portion extended to a part on a proximal direction side of an insertion main body along a longitudinal axis, and a passive bending portion provided to a distal direction side of the flexible portion in the insertion main body, being more flexible than the flexible portion, and configured to passively bend when external force acts thereon. The endoscope includes an attachment unit which includes a fin portion spirally extended along the longitudinal axis, and through which the insertion section is inserted, and a holding portion provided to the insertion main body, and configured to hold the attachment unit in a state that the attachment unit covers the passive bending portion and that the attachment unit is rotatable about the longitudinal axis with respect to the insertion main body.
Claims11
An endoscope comprising:
- an insertion main body which is extended along a longitudinal axis, and which is configured to be inserted into a lumen, the insertion main body comprising:
- a first tubular portion;
- and
- a second tubular portion positioned distally which is provided to the first tubular portion, the second tubular portion having a flexibility more flexible than a flexibility of the first tubular portion, the second tubular portion including a passive bending portion configured to passively bend when external force acts thereon;
- an attachment unit through which the insertion main body is inserted, the attachment unit having a fin portion spirally extending along the longitudinal axis, the attachment unit being attached to the insertion main body in a state that a rotation of the attachment unit about the longitudinal axis with respect to the insertion main body is controllable;
- and
- a connecting mouth ring which connects connect the first tubular portion to the second tubular portion at a transition between the first tubular portion and the second tubular portion, an outer peripheral direction side of the connecting mouth ring being rotatably connected to a proximal end portion of the attachment unit such that a proximal end of the attachment unit is rotatably attached to the connecting mouth ring at the transition between the first tubular portion and the second tubular portion wherein in a state that substantially all portions of the attachment unit extend distally from the transition.
An insertion main body extended along a longitudinal axis and which is configured to be inserted into a lumen in an attachment unit, the attachment unit includes a fin portion spirally extended along the longitudinal axis, the attachment unit being capable of being attached to the insertion main body at a position where a rotation of the attachment unit about the longitudinal axis with respect to the insertion main body is controllable, the insertion main body comprising:
- a first tubular portion;
- a second tubular portion positioned distally to the first tubular portion the second tubular portion having a flexibility more flexible than a flexibility of the first tubular portion, the second tubular portion including a passive bending portion configured to passively bend when external force acts thereon;
- and
- a connecting mouth ring which connects the first tubular portion to the second tubular portion at a transition between the first tubular portion and the second tubular portion, an outer peripheral direction side of the connecting mouth ring being rotatably connected to a proximal end portion of the attachment unit such that a proximal end of the attachment unit is rotatably attached to the connecting mouth ring at the transition between the first tubular portion and the second tubular portion wherein substantially all portions of the attachment unit extend distally from the transition.
Dependencies are inferred from the claim text.