Patent foramen ovale (pfo) closure device with linearly...

A - Human Necessities – 61 – B

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A61B 17/00 (2006.01)

Patent

CA 2646826

The present invention provides a device for occluding an anatomical aperture, such as an atrial septal defect (ASD) or a patent foramen ovale (PFO). The occluder includes two sides connected by a central tube. In some embodiments, the occluder is formed from filaments that are joined together to define a substantially cylindrical form with openings defining struts. Upon the application of force, the struts deform into loops. The loops may be of various shapes, sizes, and configurations, and, in at least some embodiments, the loops have rounded peripheries. The occluder further includes a catch system that maintains its deployed state in vivo. When the occluder is deployed in vivo, the two sides are disposed on opposite sides of the septal tissue surrounding the aperture and the catch system is engaged so that the occluder closes the aperture.

La présente invention concerne un dispositif d'occlusion d'une ouverture anatomique, telle qu'une communication interauriculaire ou un foramen ovale persistant. Le dispositif d'occlusion comprend deux côtés reliés par un tube central. Dans certains modes de réalisation, le dispositif d'occlusion se compose de filaments assemblés pour définir une forme sensiblement cylindrique avec des ouvertures définissant des contre-fiches. Lors de l'application d'une force, les contre-fiches se déforment en boucles. Les boucles peuvent présenter diverses formes, tailles et configurations et, dans au moins certains modes de réalisation, les boucles présentent des périphéries arrondies. Le dispositif d'occlusion comprend également un système de prise qui maintient son état déployé in vivo. Lorsque le dispositif d'occlusion est déployé in vivo, les deux côtés sont disposés sur les côtés opposés du tissu septal entourant l'ouverture et le système de prise est engagé de sorte que le dispositif d'occlusion ferme l'ouverture.

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