Adjustable sample size tissue sampling device
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United States of America Patent
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Mar 3, 2015
Grant Date -
Jul 12, 2012
app pub date -
Nov 10, 2011
filing date -
Nov 11, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Among other things, there is disclosed a biopsy needle capable of taking samples of varying size. In particular embodiments, a user selects one of a plurality of sample-size settings, which sets the needle to a particular cannula throw-length by moving an internal wall against which a spring engages. For a shorter throw, the wall is in a forward position and the cannula is retracted the smaller amount to compress the spring. For a longer throw, the wall is in a rearward position and the cannula is retracted a larger amount to compress the spring.
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