Exchangeable integrated-wire balloon catheter

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/09 (2006.01) A61L 29/04 (2006.01) A61M 25/10 (2006.01) A61M 29/02 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2104121

A fully exchangeable integrated-wire dilation catheter (30) for performing angioplasty is disclosed having a flexible small diameter guide wire (32) provided with an enlarged diameter distal end portion (52) and a flexible elongated tubular shaft (34) with at least one dual function fluid conducting lumen (46) adapted to receive the guide wire (32) extending therethrough. The distal end (38) of the tubular shaft (34) is connected to the proximal end of an expandable balloon (44) provided with a coaxially aligned distal orifice (48) having means for releasably engaging the enlarged distal end portion (52) of the guide wire (32) in sealing relationship. In a preferred embodiment the sealing means is a flexible sleeve (50) extending from the distal orifice (48) of the expandable balloon (44) and dimensioned to slidingly engage the correspondingly sized enlarged distal end portion (52) of the guide wire (32). Associated procedures for utilizing the dilation catheter are also disclosed.

L'invention porte sur un cathéter de dilatation avec fil intégré (30) complètement échangeable pour l'exécution d'une angioplastie. Le cathéter comporte un fil-guide (32) souple à petit diamètre, dont l'extrémité distale (52) présente un diamètre agrandi, et un tube allongé souple (34) comprenant au moins une lumière (46) d'écoulement des fluides à double fonction, lumière qui est conçue pour recevoir le fil-guide (32) se prolongeant dans le tube. L'extrémité distale (38) du tube (34) est reliée à l'extrémité proximale d'un ballonnet gonflable (44) muni d'un orifice distal (48) aligné coaxialement. Cet orifice comporte des éléments d'insertion non permanents, mais étanches, dans l'extrémité distale (52) agrandie du fil-guide (32). Dans un modèle privilégié, l'élément d'étanchéité constitue une gaine souple (50) qui se prolonge à partir de l'orifice distal (48) du ballonnet gonflable (44) et qui est dimensionnée pour s'insérer de façon coulissante dans l'extrémité distale (52), agrandie et de taille correspondante, du fil-guide (32). Une procédure d'utilisation associée du ballonnet de dilatation est également divulguée.

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