Inferior vena cava filter on guidewire
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United States of America Patent
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Issued Date -
Sep 25, 2008
app pub date -
Jun 13, 2007
filing date -
Jun 14, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A temporary inferior vena cava filter including a guidewire and a doublet cage filter distally located on the guidewire. The doublet cage filter has a proximal cage filter and a distal cage filter, both of resilient and biased toward their expanded or deployed state. The proximal and distal cage filters may be collapsed by actuation, preferably with a sheath. A method of protecting from pulmonary embolism during treatment of a deep vein thrombosis is disclosed. The doublet cage provides stability when deployed in the inferior vena cava, is readily retrieved and readily manufactured. A method of manufacturing the doublet cage filter assembly is also disclosed and involves a nitinol tube with plural cuts to form struts which are heat treated in an expanded state.
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