ENDOSCOPIC SURGICAL DEVICE
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United States of America Patent
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app pub date -
Sep 21, 2017
filing date -
Mar 23, 2015
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Abstract
An endoscopic surgical device that can suitably puncture a body wall with an overtube that having two insertion passages is provided. In a case where a body wall is punctured with the overtube that has two insertion passages through which medical instruments are inserted and that has openings of the insertion passages in a distal end surface, distal end parts of two needle parts of an inner needle are disposed to protrude from the openings in a case where the inner needle is mounted. Accordingly, a distal end portion of the overtube has a tapered shape, cutting blade parts are disposed in the same straight line as seen from a distal end side, and an insertion load is reduced.
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