Medical needle and medical device
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United States of America Patent
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Jun 22, 2010
Grant Date -
May 11, 2006
app pub date -
Dec 16, 2004
filing date -
Dec 19, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
One of the aspects of the present invention is to provide a medical needle extending along a predetermined direction and having a vertical cross-section taken along a plane perpendicular to the predetermined direction of which cross-sectional area varies based upon a distance from a needle tip. The medical needle includes a plurality of maximal points where the cross-sectional area of the vertical cross-section is locally maximal, and a plurality of minimal points where the cross-sectional area of the vertical cross-section is locally minimal. The vertical cross-section at the maximal point closest to the needle tip has the cross-sectional area not less than those at any other maximal points.
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