Electrosurgical instrument having an arcuate electrode section
AssigneeAesculap AG
InventorsChristoph Rothweiler, Eugen Herner, Christian Huber
Life of this patent
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Abstract
An electrosurgical instrument includes mutually movable instrument legs each comprising one or more electrode faces between which tissue can be clamped and treated in electrothermal manner. The movement of the instrument legs relative to each other can be delimited by at least two spacers which are spaced from each other in the longitudinal extension of the instrument legs and act on the instrument legs. At least one electrode face portion subjected to deflection in a closed position of the instrument legs is formed to be bow-shaped, in particular concave, the curvature being contrary to the bending direction to be expected.
Claims12
An electrosurgical instrument comprising:
- mutually movable instrument legs, the instrument legs each comprising one or more electrode faces, wherein tissue can be clamped between the electrode faces of the instrument legs and treated in an electrothermal manner, the movement of the instrument legs relative to each other being delimited by at least two spacers which are spaced from each other in a longitudinal direction of the instrument legs and act on the instrument legs,
- wherein at least one portion of one of the electrode faces, which is configured to be subjected to deflection in a closed position of the instrument legs by the respective opposing instrument leg, is formed to be concavely bow-shaped and has a curvature as seen in the longitudinal direction of the instrument legs, the curvature being contrary to a bending direction of said one of the electrode faces which is to be expected in a closed position, wherein at least one instrument leg is partially received in a support/abutment portion of a shaft, the support/abutment portion projecting distally beyond a pivot joint, and wherein the at least one instrument leg is articulated to the pivot joint at its longitudinal center in the manner of a rocker.
An electrode in combination with an electrosurgical instrument, the electrosurgical instrument comprising mutually movable instrument legs, the instrument legs each comprising one or more electrode faces, wherein tissue can be clamped between the electrode faces of the instrument legs and treated in electrothermal manner, the movement of the instrument legs relative to each other being delimited by at least two spacers which are spaced from each other in a longitudinal direction of the instrument legs and act on the instrument legs,
- wherein at least one portion of one of the electrode faces, which is configured to be subjected to deflection in a closed position of the instrument legs by the respective opposing instrument leg, is formed to be concavely bow-shaped and has a curvature as seen in the longitudinal direction of the instrument legs, the curvature being contrary to a bending direction of said one of the electrode faces which is to be expected in a closed position, wherein at least one instrument leg is partially received in a support/abutment portion of a shaft, the support/abutment portion projecting distally beyond a pivot joint, and wherein the at least one instrument leg is articulated to the pivot joint at its longitudinal center in the manner of a rocker,
- the electrode comprising:
- a tissue contact side or tissue contact face, wherein the electrode as a whole or at least the tissue contact side or tissue contact face associated with the electrode and provided for the electrothermal treatment of a tissue is elastically bendable and is formed to be concavely bow-shaped, at least in sections in the longitudinal direction of the instrument legs and perpendicular to the tissue contact face.
An electrosurgical instrument comprising:
- mutually movable instrument legs, the instrument legs each comprising one or more electrode faces, wherein tissue can be clamped between the electrode faces of the instrument legs and treated in an electrothermal manner, the movement of the instrument legs relative to each other being delimited by at least two spacers which are spaced from each other in a longitudinal direction of the instrument legs and act on the instrument legs,
- wherein at least one portion of one of the electrode faces, which is configured to be subjected to deflection in a closed position of the instrument legs by the respective opposing instrument leg, is formed to be concavely bow-shaped and has a curvature as seen in the longitudinal direction of the instrument legs, the curvature being contrary to a bending direction of said one of the electrode faces which is to be expected in a closed position, wherein at least one instrument leg is partially received in a support/abutment portion of a shaft, the support/abutment portion projecting distally beyond a pivot joint, and wherein the at least one instrument leg is articulated to the support/abutment portion at the center of the instrument leg in the manner of a rocker.
Dependencies are inferred from the claim text.