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US 7,125,408 B2Granted
High-frequency knife
AssigneeOlympus Corporation
InventorTsutomu Okada
Life of this patent
Estimating the term…
Abstract
A high-frequency knife having a flexible sheath, an operation member, an electrode part, a handled operation section and a connector part. The electrode part is provided with a rod electrode part extending in an axial direction of a flexible sheath, and a plate electrode part. Three corner portions are provided on an external peripheral portion of the plate electrode part.
Claims7
A high-frequency knife, comprising:
- an electrically insulating flexible sheath having a distal end and a proximal end;
- an operation member inserted into the sheath to be movable in an axial direction therein;
- an operation section provided on the proximal end of the sheath, the operation section having a slider part which moves the operation member in the axial direction of the sheath;
- and
- an electrode part provided on the distal end of the operation member, at least a part of the electrode part being axially projected from and retracted in the distal end of the sheath, the electrode part having a rod electrode part extending in the axial direction of the sheath and a plate electrode disposed on a distal end of the rod electrode part, the plate electrode part including a plane surface part extending in a direction crossing the axis direction of the sheath;
- and
- a plurality of electro-conductive projecting portions formed on the plate electrode part and projecting in an extending direction of a plane surface of the plate electrode part, the plurality of electro-conductive projecting portions projecting in directions different from each other.
4 more elements
Dependencies are inferred from the claim text.