Guidewire for capturing emboli in endovascular interventions
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United States of America Patent
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N/A
Issued Date -
Dec 5, 2002
app pub date -
Jun 1, 2002
filing date -
Jun 4, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A guidewire device and methods for containing and removing embolic materials from within a vascular system. The guidewire provides a very low profile expandable structure that can be carried at the distal end of any guidewire used in an endovascular intervention. The structure can be expanded at a location distal to a targeted treatment site, and due to its very low profile when non-expanded, can be passed through any narrow and tortuous occluded vessels that can accommodate a guidewire. The expandable structure comprises a thin film filter portion coupled to at least one support portion for supporting the filter portion in an expanded state. The support portion in its first non-extended state comprises at least one tensioned nitinol member constrained by an electrolytic sacrificial weld. The guidewire is coupled to a remote electrical source and controller for causing electrolysis of the sacrificial component of the invention.
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