Balloon anchoring system

Details Balloon anchoring system Balloon anchoring system

A - Human Necessities

61

F

A61F 2/06 (2006.01) A61B 17/22 (2006.01) A61F 11/00 (2006.01) A61M 29/00 (2006.01) A61M 29/02 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2452828

A system for anchoring an angioplasty catheter (10) to a stenosis in the vasculature of a patient includes an elongated inflatable balloon (14) that can be selectively moved between a deflated configuration and an inflated configuration. Optionally, the system can include a stent (38) mounted on the balloon (14). The balloon (14) defines an axis (18) and has at least one elongated blade (22'/22''/22'''/22'''') which is axially oriented on the surface (20) of the balloon. Also this blade is conformed with at least one azimuthally oriented grip (28'/28''/28'''/28''''). When the balloon (14) is moved into its inflated configuration, to thereby embed the blade (22'/22''/22'''/22'''') and its grip (28'/28''/28'''/28'''') into the stenosis and expand the stent (38) for emplacement in the vasculature, the axially oriented blade (22'/22''/22'''/22'''') prevents an azimuthal movement of the balloon and the azimuthally oriented grip (28'/28''/28'''/28'''') prevents an axial movement of the balloon relative to the stenosis.

Cette invention porte sur un système d'ancrage d'un cathéter d'angioplastie (10) sur une sténose dans la vasculature d'un patient, lequel système comprend un ballonnet (14) gonflable allongé pouvant passer sélectivement d'une configuration dégonflée à une configuration gonflée. Ce système peut éventuellement comporter un stent (38) monté sur ce ballonnet (14). Le ballonnet (14) définit un axe (18) et comporte au moins une lame (22'/22''/22'''/22'''') allongée qui est orientée axialement sur la surface (20) du ballonnet. Par ailleurs, cette lame est pourvue d'au moins un élément de retenue (28'/28''/28'''/28'''') orienté en mode azimutal. Lorsque le ballonnet (14) est gonflé pour que la lame (22'/22''/22'''/22'''') et son élément de retenue (28'/28''/28'''/28'''') soient disposés dans la sténose et que le stent (38) s'étende pour venir se placer dans la vasculature, la lame (22'/22''/22'''/22'''') orientée axialement empêche tout déplacement azimutal du ballonnet et l'élément de retenue (28'/28''/28'''/28'''') orienté en mode azimutal empêche tout déplacement axial du ballonnet par rapport à la sténose.

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