Contraceptive transcervical fallopian tube occlusion devices...

A - Human Necessities – 61 – F

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A61F 6/22 (2006.01) A61F 6/18 (2006.01) A61B 17/12 (2006.01)

Patent

CA 2221332

The invention provides intra-fallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device (10) is enhanced by forming the structure at least in part from copper or a copper alloy. The device (10) is anchored within the fallopian tube by imposing a secondary shape on a resilient structure, the secondary shape having a larger cross section than the fallopian tube. The resilient structure is restrained in a straight configuration and trans-cervical inserted within the fallopian tube, where it is released. The resilient structure is then restrained by the walls of the fallopian tube, imposing anchoring forces as it tries to resume the secondary shape.

La présente invention concerne des dispositifs à insérer dans la trompe de Fallope et des procédés non chirurgicaux de mise en place de ces dispositifs à des fins contraceptives. L'efficacité dudit dispositif (10) est améliorée par la composition de la structure du dispositif, qui est au moins en partie réalisée en cuivre ou en alliage de cuivre. La fixation du dispositif (10) dans la trompe de Fallope s'effectue en donnant une forme secondaire à la structure élastique, dont la section transversale est plus large que celle de la trompe de Fallope. La structure élastique est maintenue serrée dans une configuration droite. Elle est insérée par le col de l'utérus dans la trompe de Fallope, où elle est alors desserrée. La structure élastique est ensuite maintenue serrée par les parois de la trompe de Fallope, qui la maintiennent en position fixe lorsqu'elle tente de reprendre la forme secondaire.

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