Catheter having an improved balloon-to-catheter bond

Details Catheter having an improved balloon-to-catheter bond Catheter having an improved balloon-to-catheter bond

A - Human Necessities

61

M

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

Patent

CA 2469101

A tie layer insert is disclosed to aid in bond formation between an expandable balloon and a distal portion of a catheter shaft. The tie layer insert can be a single layer applied directly to the structural surfaces, or alternatively, the tie layer may be incorporated into a preformed polymeric insert. In the latter embodiment, the polymeric insert may include several layers of polymeric material. During the manufacturing process, the preformed polymeric insert is positioned between the distal portion of the expandable balloon and the catheter shaft. The entire distal region is then processed to form a sealably bonded expandable balloon to the distal end of the catheter shaft.

Selon l'invention, une pièce de couche de liaison permet la formation d'une liaison entre un ballon extensible et la partie distale d'une tige de cathéter. Ladite pièce de couche de liaison peut être une couche unique appliquée directement sur les surfaces structurales, ou en variante, ladite pièce peut être incorporée sous forme d'une pièce polymère préformée. Dans ce mode de réalisation, la pièce polymère peut comprendre plusieurs couches d'un matériau polymère. Pendant le procédé de fabrication, la pièce polymère préformée est placée entre la partie distale du ballon extensible et la tige du cathéter. La totalité de la zone distale est ensuite traitée afin que soit formé un ballon extensible hermétiquement lié à l'extrémité distale de la tige du cathéter.

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