Methods and devices for filtering fluid flow through a body...

Details Methods and devices for filtering fluid flow through a body... Methods and devices for filtering fluid flow through a body...

A - Human Necessities

61

M

A61M 29/00 (2006.01) A61F 2/01 (2006.01)

Patent

CA 2390223

An intravascular filter (2) having a filament (6) which expands a filter element (4). The filter filament (6) is a coil (20) which is stretched to reduce the diameter of the coil (20) for introduction. The filter element (4) is preferably biased toward the closed position and is opened by the coil (20) when tension is released on the coil (20). The filament (6) slides along the internal surface (19) of the filter element (6) so that the filter element (6) may assume intermediate positions.

L'invention concerne un filtre intravasculaire comportant un filament formant un élément de filtrage en extension. Le filament est une spirale étant étirée afin de réduire son diamètre pour l'introduction. L'élément de filtrage est de préférence orienté vers la position fermée et est ouvert par la spirale lorsque la tension sur la spirale est relâchée. Le filament coulisse le long de la surface interne de l'élément de filtrage de manière que l'élément de filtrage puisse prendre des positions intermédiaires.

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