Medical puncture needle and method for manufacturing puncture needle
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United States of America Patent
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Jul 28, 2020
Grant Date -
Jun 7, 2018
app pub date -
Jan 30, 2018
filing date -
Jul 30, 2015
priority date (Note) -
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Abstract
A medical puncture needle includes: a distal end portion including a needle point; and a rod-like main body portion continuous with the distal end portion. The distal end portion includes a blade surface. The blade surface includes: a first blade surface portion on a front side of the distal end portion, the first blade surface portion being inclined with respect to a center axis of the main body portion and extending to the needle point, and a second blade surface portion on a back side of the distal end portion. When a virtual plane including the center axis of the main body portion is established, the second blade surface portion comprises a curved surface in which an angle with respect to the virtual plane in a cross section orthogonal to the center axis direction gradually increases toward the needle point side in the center axis direction.
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