Vena-cava filter
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United States of America Patent
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-
Sep 21, 1999
Grant Date -
N/A
app pub date -
Dec 13, 1996
filing date -
Jun 16, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vena-cava filter features an inflatable balloon at or near the distal end of an elongate flexible multiple-lumen core or stem. The balloon is suitably configured in a preferred construction at or near the distal end of an elongate flexible multiple-lumen core. The balloon is suitably configured in a preferred embodiment for femoral-vein insertional installation; and in another embodiment the balloon is suitably configured for jugular-vein insertional installation. In both embodiments, the balloon is deflated prior to insertion; it is inflated to become a filter when properly positioned in the vein, and finally it is deflated for removal purposes. Installation may proceed pursuant to guide-wire techniques commonly used for catheter installation. Each of the indicated two embodiments is described for the case of additionally providing for injection of a tracer or a thrombolytic agent at a location in the vein at proximal (i.e., upstream) offset from the region of filter action.
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