Interventional catheters having cutter assemblies and differential cutting surfaces for use in such assemblies
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United States of America Patent
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Oct 7, 2014
Issued Date -
N/A
app pub date -
Oct 3, 2007
filing date -
Oct 4, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A rotatable operating head for removal of obstructive material from a target site in a body lumen or cavity is operably connected to a rotatable, translatable drive shaft, that is driven by a drive motor and received through an elongated catheter. The operating head includes a plurality of differential cutting blades, with at least one of the cutting blades being a stepped blade, the stepped blade comprising a raised cutting surface positioned adjacent, or in proximity to, a shoulder region.
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