Removable vena cava filter for reduced trauma in collapsed configuration
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United States of America Patent
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Apr 20, 2010
Grant Date -
Dec 1, 2005
app pub date -
Apr 18, 2005
filing date -
Apr 16, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides a removable vena cava filter for capturing thrombi in a blood vessel. The filter comprises a plurality of primary struts having first ends attached together along a longitudinal axis. Each primary strut has an arcuate segment extending from the first end to an anchoring hook. The primary struts are configured to move between an expanded state for engaging the anchoring hooks with the blood vessel and a collapsed state for filter retrieval or delivery. Each primary strut are configured to cross another primary strut along the longitudinal axis in the collapsed state such that the arcuate segments occupy a first diameter greater than a second diameter occupied by the anchoring hooks in the collapsed state for filter retrieval or delivery.
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