Methods and systems for deployment of a detachable balloon...

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/12 (2006.01) A61B 17/12 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2254052

Methods and systems for deployment of a detachable, inflatable balloon at a target site in vivo are disclosed. In one aspect of the invention, the method involves providing a holder; passing a protective sheath through the lumen of the holder; passing a positioning element through the lumen of the sheath; advancing the positioning element to the target site in vivo; withdrawing the positioning element while keeping the sheath fixed relative to the holder; passing a detachable, inflatable balloon coupled to a distal end of a delivery device through the sheath; withdrawing the sheath into a retractor disposed at proximal end of the delivery device such that the delivery device remains fixed relative to the holder and the balloon is exposed to the target site in vivo; and inflating and detaching the balloon. In another aspect, the system includes a holder; a protective sheath configured for insertion through the holder; a delivery device for carrying a detachable, inflatable balloon disposed at its distal end, the delivery device configured for insertion through the sheath; and a retractor, disposed at a proximal end of the catheter, for withdrawing the sheath whereby the delivery device remains fixed relative to the holder and the balloon is exposed to the target site.

L'invention porte sur des procédés et systèmes de mise en place d'un ballonnet détachable gonflable sur un site cible in vivo. Selon l'un des aspects de l'invention, les méthodes consistent à se procurer un support, à passer une gaine de protection à travers la lumière du support, à passer un élément de positionnement à travers la lumière de la gaine, à avancer l'élément de positionnement jusqu'au site cible in vivo, à retirer l'élément de positionnement tout en laissant la gaine en place relativement au support, à passer à travers la gaine un ballonnet détachable gonflable fixé à l'extrémité distale d'un dispositif de pose, à retirer la gaine dans un rétracteur fixé à l'extrémité proximale du dispositif de pose de manière à ce que le dispositif de pose reste en place par rapport au support et que le ballonnet soit positionné dans le site cible in vivo, puis à gonfler le ballonnet et à le détacher. Selon un autre aspect de l'invention, le système comporte un support, une gaine de protection conçue pour s'insérer dans le support, un dispositif de pose transportant un ballonnet détachable gonflable fixé à son extrémité distale, le dispositif de pose étant conçu pour s'insérer dans la gaine, un rétracteur placé à l'extrémité proximale du cathéter et permettant de retirer la gaine alors que le dispositif de pose reste en place par rapport au support et que le ballonnet reste positionné dans le site cible.

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