Treatment instrument for endoscope including a sheath having a tapered portion at a distal end portion thereof
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United States of America Patent
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Apr 23, 2013
Grant Date -
Apr 1, 2010
app pub date -
Sep 29, 2009
filing date -
Sep 30, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A treatment instrument for an endoscope includes: an operation portion; a cylindrical sheath that is connected to the operation portion and that also comprises an insertion portion; an axial electrode that is protruded from and retracted into a distal end opening portion of the sheath by an operation of the operation portion; and a distal end electrode portion that is provided at a distal end portion of the axial electrode; wherein a tapered portion is formed at a distal end portion of the sheath, the tapered portion being in a tapered shape that a distal end side of the distal end portion is narrower than a proximal end side of the distal end portion.
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