Flow restoration systems and methods for use

Details Flow restoration systems and methods for use Flow restoration systems and methods for use

A - Human Necessities

61

B

A61B 17/22 (2006.01) A61B 17/50 (2006.01)

Patent

CA 2737653

Apparatus and methods are provided for removing obstructive material within a body lumen. The apparatus includes a macerator device deployable from a sheath that includes an expandable cage carried by a shaft and within a constraint tube. The shaft is movable relative to the constraint tube for deploying and expanding the cage within a body lumen such that an open end of the cage is oriented towards obstructive material. The cage is advanced to capture the material or the material is directed into the cage using an expandable member expanded beyond the material and retracted to direct the material into the cage. The cage is withdrawn into the constraint tube to compress the cage radially inwardly. Material extending through apertures in the cage are sheared off by a sharpened edge of the constraint tube. The smaller, sheared off particles are then aspirated from the body lumen through the sheath.

Linvention concerne des appareils et des méthodes permettant déliminer une matière obstruant une lumière corporelle. Lappareil comporte un dispositif de dilacération pouvant être déployé à partir dune gaine comprenant une cage dilatable portée par un bras et se trouvant dans un tube de contrainte. Le bras peut se déplacer par rapport au tube de contrainte pour déployer et dilater la cage à lintérieur dune lumière corporelle de manière à ce quune extrémité ouverte de la cage soit orientée en direction de la matière obstructive. La cage est avancée pour capturer la matière ou la matière est dirigée dans la cage au moyen dun organe dilatable dilaté au-delà de la matière et rétracté pour diriger la matière dans la cage. La cage est retirée dans le tube de contrainte pour comprimer la cage radialement vers lintérieur. La matière se prolongeant par les ouvertures de la cage est coupée par un bord effilé du tube de contrainte. Les particules coupées plus petites sont ensuite aspirées dans la lumière corporelle par lintermédiaire de la gaine.

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