THREE-DIMENSIONAL RETRACTOR
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United States of America Patent
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Issued Date -
Dec 5, 2013
app pub date -
Sep 16, 2011
filing date -
Feb 25, 2011
priority date (Note) -
Published
status (Latency Note)
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Abstract
A retractor including an excluding portion having an obtuse distal end, an introduction portion extending from the excluding portion, and a handle portion provided at a proximal end of the introduction portion. The excluding portion and the introduction portion each have an outer diameter that allows insertion into a treatment instrument channel of an endoscope. The excluding portion is configured by a movable wire and a plurality of fixed wires, the movable wire extends through the introduction portion, proximal ends of the fixed wires are fixed to a distal end of the introduction portion, and a distal end of the movable wire and distal ends of the fixed wires are joined to each other. A proximal end of the movable wire is pulled with the handle portion toward the handle portion so the excluding portion develops a cocoon shape. The retractor is useful in minimally-invasive surgery.
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