Magnetic components for forming anastomoses and creating...

A - Human Necessities – 61 – B

Patent

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A61B 17/11 (2006.01) A61B 17/064 (2006.01) H01F 41/02 (2006.01) A61B 17/00 (2006.01) A61B 17/04 (2006.01) A61F 2/00 (2006.01) A61F 2/06 (2006.01)

Patent

CA 2387050

Methods and devices for forming an anastomosis between hollow bodies utilize magnetic force to couple anastomotic components (360, 362) and connect the lumens of the hollow bodies. End-to-side, side-to-side and end-to-end anastomoses can be created with or without a mechanical connection between the components (360, 362). The securing components (360, 362) have the ability to produce a magnetic field and may include materials or assemblies. A component (278, 280) may also be used to form a port into the lumen of a vessel, the component (278, 280) being attached to the vessel by mechanical and/or magnetic means. Magnetic components (278, 280) may include means (282, 284) for concentrating the magnetic flux between respective components (278, 280) to increase the attraction force, thereby enhancing the security of the anastomosis. Components (398, 400) having an occlusion surface may be used to close an opening in tissue, e.g., an atrial septal defect.

La présente invention concerne des procédés et des dispositifs permettant de former une anastomose entre des corps creux, qui utilisent une force magnétique pour raccorder des éléments anastomotiques (360, 362) et de connecter les lumières de ces corps creux. On peut créer des anastomoses extrémité contre paroi latérale et extrémité contre extrémité avec ou sans connexion mécanique entre les éléments (360,362). Les élément (360, 362) de fixation peuvent produire un champ magnétique et peuvent comprendre des matériaux ou des ensembles. Un élément (278, 280) peut aussi être utilisé pour former un orifice dans la lumière d'un vaisseau, cet élément (278, 280) étant fixé au vaisseau par un moyen mécanique et/ou magnétique. Les éléments (278, 280) magnétiques peuvent comprendre des organes (282, 284) destinés à concentrer le flux magnétique entre des éléments (278, 280) respectifs de façon à augmenter la force d'attraction, ce qui renforce la sûreté de l'anastomose. On peut utiliser des éléments (398, 400) possédant une surface d'occlusion pour fermer une ouverture dans un tissu, par exemple une malformation congénitale du septum auriculo-ventriculaire.

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