Vascular filter system

Details Vascular filter system Vascular filter system

A - Human Necessities

61

F

A61F 2/01 (2006.01)

Patent

CA 2310756

A removable vascular filter system for blocking micro-emboli, and macro-emboli while allowing the continued perfusion of blood, comprises a filter membrane (20) positioned on a guide wire (10), wherein a free end of the membrane sits tightly against the guide wire when the filter membrane (20) is in a collapsed state. The filter has a means for deploying the filter membrane to assume a position substantially normal to the longitudinal axis of the guide wire. The filter membrane (20) is comprised of a fine mesh material which has a pore size capable of blocking emboli while allowing continued blood flow, and a preferred embodiment of which comprises regularly spaced, laser-formed holes.

Un système de filtre vasculaire amovible destiné à empêcher la micro et la macro-embolie tout en permettant la perfusion continue de sang comprend une membrane (20) de filtre positionnée sur un fil-guide (10), une extrémité libre de la membrane s'appuie hermétiquement sur le fil-guide lorsque la membrane (20) du filtre se trouve à l'état replié et le filtre comprend un moyen de déploiement de la membrane du filtre afin d'adopter une position sensiblement perpendiculaire à l'axe longitudinal du fil-guide. La membrane (20) du filtre comprend un matériau à maille fine présentant une grosseur de pore capable de bloquer l'embolie tout en permettant une circulation continue du sang, et dont un mode de réalisation préféré comprend des trous formés au laser espacés régulièrement.

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