Systems and methods for closing internal tissue defects

Details Systems and methods for closing internal tissue defects Systems and methods for closing internal tissue defects

A - Human Necessities

61

B

A61B 17/08 (2006.01)

Patent

CA 2564671

A delivery system having a steerable delivery device and an elastic clip for treating an internal tissue defect, such as septal defects and the like, is provided. The clip can be deformable between a relaxed state and a stressed state and biased towards the relaxed state. The delivery device can include a flexible tubular needle with a lumen for housing the clip while in the stressed state. When used to treat a septal defect, the needle is advancable through overlapping tissue flaps and a pusher member is advancable within the needle lumen to push the clip distally such that one end of the clip is deployed and engages a tissue flap. The needle can then be retracted allowing the clip to deploy over both flaps of tissue, where the biasing force returns the clip to the relaxed state drawing the tissue flaps together and closing the septal defect.

L'invention concerne un système de délivrance à dispositif de délivrance orientable et pince élastique pour le traitement de défaut tissulaire interne, du type septal, etc. La pince est déformable entre deux positions souple et contrainte et elle peut être contrainte vers la position souple. Le dispositif peut comprendre une aiguille tubulaire flexible avec une lumière accueillant la pince, en position contrainte. Pour un défaut septal, l'aiguille peut avancer dans des volets de tissus qui se chevauchent et un élément de poussée peut avancer dans la lumière pour pousser la pince de façon distale, de sorte qu'une extrémité de la pince soit déployée et en prise sur un volet de tissu. L'aiguille peut ensuite être rétractée, permettant le déploiement de la pince sur les deux volets, la force de contrainte renvoyant la pince en position souple pour réunir les volets et fermer le défaut septal.

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