Catheter balloon forming process

Details Catheter balloon forming process Catheter balloon forming process

A - Human Necessities

61

M

A61M 25/00 (2006.01) B29C 49/64 (2006.01) B29C 55/24 (2006.01) B29C 67/00 (2006.01) B29C 35/04 (2006.01)

Patent

CA 2396582

The present invention is directed to apparatus and method for forming balloons with improved dimensional stability and balloons formed by the same. The method of the present invention provides for a very accurate control of the temperature profile of the balloon material during its making. The attributes of the balloon can be affected by how the balloon is treated during the blowing stage and after the initial blowing, i.e., heat-setting. Using the present method, the balloon will form more uniformly and evenly (e.g., wall thickness and outer diameter of the balloon). The present method significantly increases the dimensional stability of the balloon which provides a balloon that is more predictable in use. The present heat-set process also provides the means for the working length to be located more accurately on dilation catheters and stent delivery systems.

L'invention concerne un appareil et un procédé de fabrication de ballonnets ayant une meilleure stabilité dimensionnelle ainsi que les ballonnets fabriqués au moyen de ce procédé. Ce procédé permet une régulation très précise du profil de température du matériau des ballonnets pendant leur fabrication. Les attributs des ballonnets peuvent être modifiés en fonction de la manière dont ils sont traités pendant l'étape de soufflage et après le soufflage initial, c'est-à-dire le réglage de chaleur. Grâce à ce procédé, les ballonnets seront formés de manière plus uniforme (c'est-à-dire, l'épaisseur des parois et le diamètre extérieur des ballonnets). Ce procédé permet d'augmenter de manière significative la stabilité dimensionnelle des ballonnets, ce qui permet d'obtenir des ballonnets à usage plus prévisible. Le présent procédé de réglage de chaleur fournit les moyens de situer la longueur de travail avec plus de précision sur les systèmes de déploiement de cathéters de dilatation et de stents.

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