Tethered coil for treatment of body lumens

Details Tethered coil for treatment of body lumens Tethered coil for treatment of body lumens

A - Human Necessities

61

B

A61B 17/22 (2006.01) A61F 2/01 (2006.01)

Patent

CA 2704781

Disclosed is an apparatus and a method for removable of undesired material from body lumens. The apparatus may be used for fragmenting or removing a thrombus or occlusion from a blood vessel. The apparatus includes first shape segments and second shape segments connected to form a coiled member. A longitudinally extending tether is positioned inside the first shape segments and outside the second shape segments along the length of the coil. Applying a proximal force on the tether produces a change in the shape of at least a portion of the coil from a first generally linear configuration to a second complex three dimensional shape. A method of using the apparatus to engage and remove, or fragment, the thrombus or occlusion is disclosed.

Cette invention concerne un appareil et un procédé permettant de retirer un matériau indésirable d'une lumière organique. L'appareil peut être utilisé pour fragmenter ou éliminer un thrombus ou une occlusion d'un vaisseau sanguin. L'appareil comprend des premiers segments façonnés et des seconds segments façonnés reliés pour former un élément en spirale. Un dispositif de retenue longitudinal est placé à l'intérieur des premiers segments façonnés et hors des seconds segments façonnés sur la longueur de la spirale. L'application d'une force proximale sur le dispositif de retenue produit une variation de la forme d'au moins une partie de la spirale d'une première configuration généralement linéaire à une seconde forme tridimensionnelle complexe. L'invention concerne également un procédé d'utilisation de l'appareil pour introduire et retirer, ou fragmenter, le thrombus ou l'occlusion.

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