Hypodermic needle assembly
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United States of America Patent
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-
Aug 28, 2001
Issued Date -
N/A
app pub date -
May 20, 1997
filing date -
Aug 23, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
A hypodermic-needle sample collection device includes an elongated, generally cylindrical barrel forming an aperture at the distal end of the barrel and opening into the interior of the barrel, and a needle bolder mounted for longitudinal movement within the barrel The needle holder includes a pin projecting laterally therefrom. A hollow needle carried by the needle holder projects from the holder along the axis of the barrel. The pin is guided by longitudinal linear and helical guide surfaces extending along at least a portion of the length of the barrel for moving the needle longitudinally within the barrel in response to relative rotational movement between the linear and helical guide surfaces.
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