Lancing device with decoupled lancet
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United States of America Patent
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Oct 30, 2007
Grant Date -
Dec 9, 2004
app pub date -
Mar 22, 2004
filing date -
Mar 20, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A lancing device having a low-mass, high-velocity lancet decoupled from a drive mechanism when piercing a user's skin. The drive mechanism includes a spring-driven piston that impacts the lancet on firing to propel the lancet from a retracted position towards an extended position. After impact, but before the lancet reaches the extended position, a stop limits the travel of the piston to separate the piston from the lancet. Precise guidance of the lancet minimizes lateral movement of the lancet.
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