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US 2019/0336202 A1Published application
Treatment instrument
AssigneeOlympus Corporation
InventorsMarina KOBAYASHI, Yuji HIRAI, Eiji MURAKAMI, Tadashi KITAYAMA, Satoshi MIYAJIRI, Katsushi IDE, Takahito OSHIRO
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Abstract
A treatment instrument includes a grasping piece that is openable and closable to a treatment portion, and includes an electrode member. An electrode inclination surface facing a side on which the treating portion is located is provided on an outer surface of the electrode member of the grasping piece, and the electrode inclination surface extends from an inner side to an outer side in a width direction so as to be inclined in a direction away from the treatment portion.
Claims12
A treatment instrument comprising:
- a rod that extends from a proximal side to a distal side in a longitudinal direction, and includes, on the distal side, a treatment portion having electrical conductivity;
- and
- a grasping piece that is openable and closable relative to the treatment portion, and includes an electrode member having electrical conductivity;
- and
- wherein:
- the treatment portion includes a rod outer surface that faces the grasping piece,
- the rod outer surface includes:
- a first rod inclination surface that extends inward in a width direction from one side of the treating portion so as to be inclined in a direction toward the grasping piece, the width direction being orthogonal to an extending direction of the treatment portion,
- a second rod inclination surface that extends inward in the width direction from an opposite side of the treating portion than the one side so as to be inclined in a direction toward the grasping piece, and
- a rod parallel surface that is provided between the first rod inclination surface and the second rod inclination surface in the width direction, and extends substantially parallel to the width direction,
- the electrode member includes:
- an electrode inclination surface that faces a side on which the treating portion is located, and extends from an inner side to an outer side in the width direction so as to be inclined in a direction away from the treatment portion, the electrode inclination surface including:
- a first electrode inclination surface provided on a side on which the first rod inclination surface is located with respect to a central position in the width direction, and
- a second electrode inclination surface provided on a side on which the second rod inclination surface is located with respect to the central position in the width direction, and
- an electrode facing surface that is disposed between the first electrode inclination surface and the second electrode inclination surface in the width direction, and extends from an inner side to an outer side in the width direction so as to be inclined in a direction toward the treatment portion, the electrode facing surface including:
- a first electrode facing surface that faces the first rod inclination surface, and
- a second electrode facing surface that faces the second rod inclination surface,
- the grasping piece includes a pad member that is provided between the first electrode facing surface and the second electrode facing surface in the width direction, and has electrical insulation, and
- the pad member includes a pad abutment surface that abuts against the rod parallel surface, and is substantially parallel to the rod parallel surface.
16 more elements
A treatment instrument comprising:
- a rod that extends from a proximal side to a distal side in a longitudinal direction, and includes, on the distal side, a treatment portion having electrical conductivity;
- a grasping piece that is openable and closable relative to the treatment portion, and includes an electrode member having electrical conductivity, the grasping piece being configured to move in a direction along a virtual plane that extends in a direction substantially parallel to an extending direction of the treatment portion and substantially parallel to opening and closing directions of the grasping piece;
- and
- an energy source device configured to supply high frequency electric power to the electrode member and the treatment portion,
- wherein:
- the treatment portion includes a rod outer surface that faces the grasping piece;
- the electrode member includes a first electrode portion and a second electrode portion, the second electrode portion being provided outside the first electrode portion in a width direction that intersects the virtual plane;
- and
- the treatment instrument is configured to:
- flow a high frequency current to a portion between the rod outer surface of the treatment portion and the first electrode portion, and compress a living tissue at a first pressure between the rod outer surface of the treatment portion and the first electrode portion in a state where the living tissue is grasped between the grasping piece and the treatment portion, and
- flow a high frequency current to a portion between the rod outer surface of the treatment portion and the second electrode portion, and compress the living tissue by the second electrode portion at a second pressure smaller than the first pressure in the state where the living tissue is grasped between the grasping piece and the treatment portion.
8 more elements
Dependencies are inferred from the claim text.