NEEDLE AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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app pub date -
Jan 15, 2016
filing date -
Jan 16, 2015
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Abstract
The present invention suppresses the formation of a pocket in a wall of a puncture route when a dull needle is moved forward along the puncture route. In order to achieve such aim, the invention provides a needle to be inserted into a puncture route extending from skin to a blood vessel under the skin to puncture the blood vessel, wherein: the needle is formed in a tubular shape and has an inclined end face at a tip of the needle, the inclined end face being inclined relative to an axis of the needle, a tip end of the inclined end face defining an unsharp edge; the needle has a flexibility of needle elastic modulus nE=1-900 Nmm as defined by an equation to be set forth below; a material of the needle is a resin; and the needle is manufactured by injection molding using a ring-shaped gate.
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