Methods and apparatus for deploying conformed structures in...

A - Human Necessities – 61 – B

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A61B 17/221 (2006.01)

Patent

CA 2571941

Occluding structures may be created within a body lumen by advancing a length of material distally through the body lumen. By drawing a distal location on the advanced length of material in a proximal direction, the material may be compacted into a structure which at least partially occludes the lumen. The occluding structure may be used for a variety of purposes, including removing obstructions from the body lumen, such as kidney stones from the ureter; providing hemostasis in a blood vessel; providing occlusion of a fallopian tube; temporary constraint of stone fragments in the urinary tract; capture or restraint of clot in blood vessels; and the like. Apparatus for performing the method may comprise a length of material attached at its distal end to tubular guide or other advancement member. Tensioning members may also be provided for collapsing and compacting the length of material within the body lumen.

Il est possible d'occlure une structure à l'intérieur d'une lumière du corps en faisant avancer distalement un tronçon de matériau au travers de ladite lumière. En rapprochant un distal du tronçon que l'on a fait préalablement avancer vers un point proximal, il est possible de tasser le matériau dans une structure et de créer ainsi une occlusion de la lumière. Cette structure d'occlusion peut s'utiliser à des fins diverses telles que retrait d'obstacles pris dans des lumières, par exemple des calculs rénaux dans l'urètre; exécution d'une hémostase dans un vaisseau sanguin; réalisation d'une occlusion dans une trompe de Fallope; contrainte temporaire de fragments de calcul dans les voies urinaires; capture ou contention de caillots dans des vaisseaux sanguins. Le dispositif correspondant peut comprendre un tronçon de matériau fixé par son extrémité distale à un guide tubulaire ou autre élément d'avance. Il peut également comporter des éléments de tension permettant de replier en accordéon ou de comprimer ce tronçon dans la lumière.

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