Filtering device for preventing embolism and/or distension of blood vessel walls
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United States of America Patent
Stats
-
Dec 9, 1997
Grant Date -
N/A
app pub date -
Apr 7, 1995
filing date -
Dec 28, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A filtering device and method of preventing embolism and/or the distension of blood vessel walls is provided. The device can be easily put in place and can also be removed from the patient. The device comprises a spring-like active part and a rectilinear actuator. The actuator is used to prolongate or activate the active part. The active part has a shape memory corresponding to the shape of a spiral or a semi-circle. The active part can be straightened and will regain its shape memory position upon installation in the patient's vein. The filter can be used on blood vessels of various sizes because the user can vary the amount of the active part regains its original configuration in the vein. The filter can be secured into place and has the advantage of being removable when no longer needed.
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