Removable vena cava filter with improved leg
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United States of America Patent
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Aug 21, 2012
Grant Date -
May 13, 2010
app pub date -
Nov 10, 2008
filing date -
Nov 10, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A removable filter for capturing thrombi in a blood vessel. The filter has primary struts with first ends attached together along a longitudinal axis. Each primary strut has a body member extending from its first end along the longitudinal axis to an anchoring hook. Each primary strut is configured to move relative to the longitudinal axis between an expanded state and a collapsed state. At least one primary strut has a resistant portion next to the anchoring hook. The resistant portion is configured to contact the blood vessel in the expanded state. The filter also has secondary struts. The secondary struts have proximal ends attached together along the longitudinal axis and distal ends located radially from the longitudinal axis in the expanded state. The secondary struts are configured to engage the blood vessel to centralize the filter in the expanded state in the blood vessel.
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