Anchorable balloon for angioplasty and method of manufacturing

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/10 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2528790

A catheter is provided having a system for anchoring an inflatable balloon at a treatment site. The system includes a flexible member having a substantially cylindrical shaped wall that defines a longitudinal axis. The outer surface of the cylindrical wall is formed with a plurality of protuberances that each project radially outward from the wall. With this structure, the wall seamlessly interconnects the protuberances together. In one embodiment, the flexible member constitutes a portion of a dilatation balloon. In another embodiment, the flexible member is formed as a jacket that is placed over and bonded to a dilatation balloon. The protuberances are sized, shaped and spaced on the wall of the flexible member to allow each protuberance to penetrate and become embedded in a lesion at a treatment site during inflation of the balloon. Once embedded, the protuberances anchor the balloon at the treatment site.

L'invention concerne un cathéter comprenant un système permettant d'ancrer un ballon gonflable dans un site de traitement. Ce système comprend un élément souple qui comporte une paroi de forme sensiblement cylindrique définissant un axe longitudinal. La surface extérieure de la paroi cylindrique est formée de manière à comporter une pluralité d'éléments proéminents faisant respectivement saillie radialement vers l'extérieur par rapport à la paroi. Cette structure de paroi permet auxdites parties proéminentes d'être reliées les unes aux autres sans jointure. Dans un mode de réalisation de cette invention, l'élément souple constitue une partie d'un ballon de dilatation. Dans un autre mode de réalisation, l'élément souple est formé en tant que manteau qui est placé sur un ballon de dilatation et lié avec celui-ci. Les parties proéminentes sont dimensionnées, formées et espacées les unes des autres sur la paroi de l'élément souple de façon à pouvoir respectivement pénétrer et s'intégrer dans une lésion au niveau d'un site de traitement lors du gonflement du ballon. Une fois intégrées, les parties proéminentes ancrent le ballon dans le site de traitement.

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