INSERTION DEVICE FOR PLASTIC STENT
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United States of America Patent
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Issued Date -
Apr 3, 2014
app pub date -
Sep 20, 2013
filing date -
Sep 28, 2012
priority date (Note) -
Abandoned
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Abstract
An insertion device for a plastic stent includes an operation unit which is operated to move a movable wire forward or backward, a tip portion connected to an end of the movable wire, a tube connected to the operation unit, and a plurality of expanding members which are connected between a plurality of tip end portions of the tip portion in an alternate manner. The expanding member is made of soft or flexible material so that it is contracted in a longitudinal direction and expanded in a radial direction when the tip portion is moved backward. Because the expanding members are expanded in diameter when the movable wire is moved backward by the operation of the operation unit, an external surface of the expanding member comes into contact with an internal surface of the plastic stent and is securely held by the internal surface of the plastic stent.
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