Body passageway closure apparatus and method

Details Body passageway closure apparatus and method Body passageway closure apparatus and method

A - Human Necessities

61

M

A61M 25/10 (2006.01) A61B 17/12 (2006.01) A61F 2/06 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2191091

A method and apparatus for blocking a body passageway by inserting an expandable frame (40) into the passageway and expanding the frame (40) with an expandable balloon (46) to partially embed the frame (41)) in the walls of the passageway. The frame (40) can carry a separate sealing membrane (36), or the balloon (46) can function as the sealing membrane. The sealing membrane (36), the frame (40), or the balloon (46) can also carry a clot promoting substance. The balloon (46) can be removed along with the inflation tube after the expansion procedure, if it is not serving as the sealing membrane (36), or the balloon (46) can be detached from the inflation tube and left in place, either as a sealing membrane or simply to lock the frame in place. The frame can be maintained in its expanded state by being plastically deformed during the expansion step.

Procédé et appareil permettant d'obturer un passage corporel par insertion d'une structure expansible (40) dans ledit passage et expansion de la structure (40) au moyen d'un ballonnet gonflable (46) afin de l'incorporer partiellement dans les parois du passage. Cette structure (40) peut porter une membrane d'obturation séparée (36), ou alors le ballonnet (46) peut faire fonction de membrane d'obturation. Ladite membrane (36), la structure (40) ou le ballonnet (46) peut également contenir une substance favorisant la formation de caillots. Le ballonnet (46) peut être enlevé avec le tube de gonflage après le processus d'expansion s'il n'agit pas comme membrane d'obturation (36), ou il peut être détaché du tube de gonflage et laissé sur place, soit comme membrane d'obturation, soit pour maintenir tout simplement la structure en position. Cette dernière peut être maintenue dans son état d'expansion par déformation plastique au cours de l'étape d'expansion.

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