A catheter with stent and method for the production of a...

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/06 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2168446

The present invention relates to a catheter system for introducing and implanting an expandable stent member in a body. The catheter includes a catheter member having first and second ends, the first end having an inflatable portion, a lumen in fluid communication with the inflatable portion and the second end to provide means for inflating said inflatable portion. The expandable stent member is capable of permanent deformation when expanded. At least a portion of the stent member is attached to the inflatable portion by a bond and whereby upon inflation of the inflatable portion the bond is released from the stent member to permit deployment of the stent member and removal of the catheter member. The bond may be formed by the same or different material than the balloon surface. For example, an adhesive may be used. Additionally the surface of the ballon may be softened and the stent member may be embedded into the softened portion and allowed to return to its original unsoftened state, thereby adhesively connecting the stent to the inflatable balloon.

La présente invention se rapporte à un système de cathéter servant à introduire et implanter un élément extenseur extensible dans le corps. Le cathéter comprend un élément comportant une première et une seconde extrémité, la première extrémité ayant une partie gonflable, un passage se trouvant en communication fluidique avec la partie gonflable, et la seconde extrémité possédant un dispositif pour gonfler cette partie gonflable. L'élément extenseur peut subir une déformation permanente lorsqu'il est détendu. Au moins une partie de l'élément extenseur est fixée à la partie gonflable par un adhésif, et lorsque la partie gonflable gonfle, l'adhésif se détache de l'élément extenseur afin de permettre le déploiement de ce dernier et le retrait du cathéter. L'adhésif peut être formé à partir d'un matériau identique ou différent de celui de la surface du ballonnet. De plus, la surface du ballonnet peut être assouplie, et l'élément extenseur peut être introduit dans cette partie assouplie, qui retrouve ensuite sont état d'origine non assoupli, ce qui permet de raccorder par adhésion l'extenseur au ballonnet gonflable.

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