Treatment tool
AssigneeOlympus Corporation
InventorsMarina Kobayashi, Yoshinori Homma
Life of this patent
Estimating the term…
Abstract
A treatment tool includes: an elongated shaft; a probe that protrudes from a distal end of the shaft; a movable jaw that is mounted in a rotatable manner; and a swing arm that is mounted on the movable jaw. The swing arm is capable of gripping living tissue with the probe and swinging with respect to the movable jaw. The movable jaw includes a first regulating surface that can contact a proximal end portion of the swing arm to regulate swinging of the swing arm in one direction, and a second regulating surface that can contact another region in the proximal end portion of the swing arm to regulate swinging of the swing arm in another direction.
Claims15
A treatment tool comprising:
- an elongated shaft;
- a probe that protrudes from a distal end of the shaft;
- a movable jaw that is mounted in the treatment tool in a rotatable manner;
- and
- a swing arm that is pivotably mounted on the movable jaw, the swing arm being configured to grip living tissue with the probe and swing with respect to the movable jaw, wherein:
- the movable jaw includes:
- a first regulating surface that is configured to contact a first contact region in a proximal end portion of the swing arm to regulate swinging of the swing arm in a first direction, and
- a second regulating surface that is configured to contact a second contact region in the proximal end portion of the swing arm to regulate swinging of the swing arm in a second direction, the first contact region being different from the second contact region, the second regulating surface being formed on two protruding portions that are arranged inside the movable jaw and that protrude in mutually approaching directions,
- the proximal end portion of the swing arm includes a projection that protrudes in a direction that is perpendicular to:
- (i) a longitudinal direction of the swing arm and (ii) a swing direction of the swing arm,
- the projection is configured to contact the second regulating surface, and
- a part of the proximal end portion of the swing arm is configured to be inserted between the two protruding portions of the movable jaw in a state in which the projection contacts the second regulating surface.
A treatment tool comprising:
- an elongated shaft;
- a probe that protrudes from a distal end of the shaft;
- a movable jaw that is mounted in the treatment tool in a rotatable manner;
- and
- a swing arm that is pivotably mounted on the movable jaw, the swing arm being configured to grip living tissue with the probe and swing with respect to the movable jaw, wherein:
- the movable jaw includes:
- a first regulating surface that is configured to contact a first contact region in a proximal end portion of the swing arm to regulate swinging of the swing arm in a first direction, and
- a second regulating surface that is configured to contact a second contact region in the proximal end portion of the swing arm to regulate swinging of the swing arm in a second direction, the first contact region being different from the second contact region, the second regulating surface being formed on two protruding portions that are arranged inside the movable jaw and that protrude in mutually approaching directions,
- the swing arm includes a pad member that is configured to contact the probe when the movable jaw is rotated to a closed position with respect to the probe, and
- a width of the pad member is smaller than a distance between the two protruding portions of the movable jaw.
Dependencies are inferred from the claim text.