PUNCTURE NEEDLE
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United States of America Patent
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Issued Date -
Sep 7, 2017
app pub date -
Mar 2, 2016
filing date -
Mar 2, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
The present disclosure relates, according to some embodiments, to a puncture needle that can prevent the occurrence of coring. A puncture needle according to the present disclosure includes a cannula provided with a lumen. The cannula has a blade surface. The blade surface has: a sharp region located on a tip side of the blade surface and provided with a sharp edge on inner and outer circumferences of the blade surface; and a blunt region located on a base end side of the blade surface and provided with a blunt edge on the inner and outer circumferences of the blade surface. A tip of the blade surface is provided with a thick portion formed by a boundary between two surfaces, and the boundary forms an edge.
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