Insertion instrument, endoscope
AssigneeOlympus Corporation
InventorKimihiko Naito
Life of this patent
Estimating the term…
Abstract
An insertion instrument includes an insertion portion, a tubular member that rotates about a longitudinal axis by a transmitted driving force, a flange portion that holds a position of the tubular member at an outer periphery of the insertion portion, a tapered portion having an outer diameter that gradually decreases toward a proximal end side, and an adhesive layer formed to smoothly connect a proximal end portion of the tapered portion and an outer periphery of the insertion portion.
Claims18
An insertion instrument comprising:
- an insertion portion extending along a longitudinal axis;
- and
- a tubular body configured to be detachably attached to the insertion portion, the tubular body being configured to rotate about the longitudinal axis;
- wherein the insertion portion comprising:
- a flange configured to maintain a longitudinal position of the tubular body relative to the insertion portion;
- a tapered surface provided proximally relative to the flange, an outer diameter of the tapered surface gradually decreasing in a proximal direction, a proximal end of the tapered surface being radially separated from an outer periphery of the insertion portion to form a step;
- and
- an adhesive layer formed to continuously connect the proximal end of the tapered surface and the outer periphery of a portion of the insertion portion adjacent to the tapered surface, the adhesive layer being inclined relative to the longitudinal axis, the adhesive layer filling the step.
An insertion portion for use with an endoscope and for use with a tubular body configured to be rotatably disposed on the insertion portion, the insertion portion comprising:
- an elongated body extending along a longitudinal axis;
- a flange configured to maintain a longitudinal position of the tubular body relative to the elongated body;
- a tapered surface provided proximally relative to the flange, an outer diameter of the tapered surface gradually decreasing in a proximal direction, a proximal end of the tapered surface being radially separated from an outer periphery of the insertion portion to form a step;
- and
- an adhesive layer formed to continuously connect the proximal end of the tapered surface and the outer periphery of a portion of the elongated body adjacent to the tapered surface, the adhesive layer being inclined relative to the longitudinal axis, the adhesive layer filling the step.
An insertion instrument comprising:
- an insertion portion extending along a longitudinal axis;
- and
- a tubular body configured to be detachably attached to the insertion portion, the tubular body being configured to rotate about the longitudinal axis;
- wherein the insertion portion comprising:
- a flange configured to maintain a longitudinal position of the tubular body relative to the insertion portion;
- a tapered surface provided proximally relative to the flange, an outer diameter of the tapered surface gradually decreasing in a proximal direction;
- and
- an adhesive layer formed to continuously connect a proximal end of the tapered surface and an outer periphery of a portion of the insertion portion, the adhesive layer being inclined relative to the longitudinal axis,
- wherein a distal end of the adhesive layer is provided distally relative to the proximal end of the tapered surface.
Dependencies are inferred from the claim text.