Nerve surveillance cannulae systems
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United States of America Patent
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Jul 18, 2006
Grant Date -
Oct 16, 2003
app pub date -
May 7, 2003
filing date -
Dec 23, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
An expandable tip cannula system, comprising: a hollow cannula shaft having a proximal end and a distal end; and an expandable tip mounted at the distal end of the hollow cannula shaft, the expandable tip comprising a plurality of generally-triangular shaped petals held together in a radially-inwardly tapered arrangement between adjacent petals, each petal comprising a nerve sensing electrode disposed therein.
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