Tube body and endoscope
AssigneeOlympus Corporation
InventorYuki MITAMURA
Life of this patent
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Abstract
A tube for insertion device arranged on an outer periphery of an insertion section in an insertion device configured to be inserted into a subject and rotatable around a longitudinal axis of the insertion section includes a tapered portion formed in a distal end portion in the insertion section and having an outer diameter decreasing toward a distal end of the insertion section, and a stiffening portion provided at a distal end of the tapered portion and having a higher rigidity than a rigidity of the distal end of the tapered portion.
Claims10
A tube body formed in a cylindrical shape extending in a longitudinal axis direction, the tube body comprising:
- a tapered portion formed at at least one end portion in the longitudinal axis direction of the cylindrical shape and configured to decrease an outer diameter of the cylindrical shape toward the end portion;
- and
- a ring-shaped reinforcement portion provided to be connected to the end portion and having a higher rigidity than a rigidity of a distal end portion of the tapered portion.
An endoscope comprising:
- an insertion section formed in an elongated shape extending from a hand side to a distal end side in a longitudinal direction and configured to be inserted into a subject;
- and
- a tube formed in a cylindrical shape having an inner periphery into which the insertion section penetrates and configured to be driven to rotate around an axis in the longitudinal direction with the insertion section inserted into the tube,
- wherein the tube comprises
- a tapered portion formed on the distal end side of the insertion section on an outer peripheral surface and having an outer diameter decreasing toward the distal end side of the insertion section, and
- a reinforcement portion connected to a distal end portion of the tapered portion, formed in a ring shape having an inner peripheral surface opposing an outer peripheral surface of the insertion section to contact the outer peripheral surface or opposing the outer peripheral surface with a gap, and having a higher rigidity than a rigidity of the distal end portion of the tapered portion.
Dependencies are inferred from the claim text.