ENDOSCOPIC SCISSORS AND ENDOSCOPIC HIGH FREQUENCY TREATMENT TOOL
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United States of America Patent
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app pub date -
Oct 28, 2015
filing date -
Oct 29, 2014
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Abstract
A pair of endoscopic scissors includes a pair of scissor pieces facing and overlapping, the scissor pieces being pivotally supported by a turning pivot extending in overlapping direction such that the pair is opened and closed and having cutting portions that grips and incises biological tissue, and an operation wire that applies driving force to base end portion sides of the scissor pieces such that opening-closing operation of tip end portions of the scissor pieces is performed. One or more scissor pieces have a tip end portion having a claw that grips the tissue and is protruding in closing direction beyond respective cutting portion, a concave penetrating the respective cutting portion in thickness direction is locally formed in the respective cutting portion, and the respective cutting portion excluding the claw and concave is formed to have a flat and linear shape extending in tip end-base end direction.
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