Methods and apparatus for blocking flow through blood vessels

A - Human Necessities – 61 – B

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Details

A61B 17/12 (2006.01) A61B 1/313 (2006.01) A61B 17/11 (2006.01) A61B 17/34 (2006.01) A61B 18/14 (2006.01) A61F 2/06 (2006.01) A61M 25/12 (2006.01) A61M 29/00 (2006.01) A61B 17/00 (2006.01) A61B 17/064 (2006.01) A61B 17/22 (2006.01) A61B 17/30 (2006.01) A61B 18/00 (2006.01) A61B 18/24 (2006.01) A61B 19/00 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2244080

This invention is methods and apparatus for occluding blood flow within a blood vessel (22). In a first series of embodiments, the present invention comprises a plurality of embolic devices (16) deployable through the lumen (12) of a conventional catheter (10) such that when deployed, said embolic devices (16) remain resident and occlude blood flow at a specific site within the lumen of the blood vessel (22). Such embolic devices (16) comprise either mechanical embolic devices that become embedded within or compress against the lumen of the vessel or chemical vaso-occlusive agents that seal off blood flow at a given site. A second embodiment of the present invention comprises utilization of a vacuum/cauterizing device capable of sucking in the lumen of the vessel about the device to maintain the vessel in a closed condition where there is then applied a sufficient amount of energy to cause the tissue collapsed about the device to denature into a closure. In a third series of embodiments, the present invention comprises the combination of an embolization facilitator coupled with the application of an energy force to form an intraluminal closure at a specified site within a vessel.

Méthodes et appareil permettant d'arrêter l'écoulement du sang dans un vaisseau sanguin (22). Selon une première série de modes de réalisation, des dispositifs emboliques (16) pouvant être déployés à travers la lumière (12) d'un cathéter classique (10) restent, une fois déployés, en place à l'intérieur du vaisseau et bloquent le flux sanguin en un emplacement spécifique, à l'intérieur de ce vaisseau (22). Ces dispositifs emboliques (16) comprennent soit des dispositifs emboliques qui s'incrustent à l'intérieur ou se compriment contre la paroi interne du vaisseau ou bien des agents chimiques vaso-occlusifs qui bloquent le flux sanguin en un site spécifique. Selon un deuxième mode de réalisation possible, on utilise un dispositif cautérisant/sous vide pouvant créer une aspiration à l'intérieur de la lumière du vaisseau sanguin à proximité du dispositif afin de maintenir ce vaisseau obturé pendant le temps qu'on lui applique une énergie suffisante pour obtenir l'affaissement des tissus autour du dispositif et le dénaturer pour le fermer. Selon une troisième série de modes de réalisation, on combine un facilitateur d'embolisation à l'application d'une force pour obtenir une fermeture intraluminale en un site spécifique du vaisseau.

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