Endoscope treatment tool
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United States of America Patent
Stats
-
Dec 1, 2015
Grant Date -
Jan 9, 2014
app pub date -
Jun 5, 2013
filing date -
Apr 13, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An endoscope treatment tool includes a flexible sheath, a manipulation wire, and a basket portion constituted by a locking portion and a plurality of elastic wires. A maximum outside diameter portion of the basket portion is at a position closer to the locking portion than an intermediate position between a proximal end of the basket portion and the locking portion. The plurality of elastic wires is formed in a shape of a helix, and a winding pitch of the plurality of elastic wires becomes gradually smaller in a direction from a proximal side to the distal side of the manipulation wire. When a proximal side of the basket portion is reduced, an outside diameter of the maximum outside diameter portion is maintained at substantially a same size as the outside diameter before the proximal side of the basket portion is reduced.
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