New method to make tube-in-tube balloon

Details New method to make tube-in-tube balloon New method to make tube-in-tube balloon

A - Human Necessities

61

L

A61L 29/04 (2006.01) A61L 29/12 (2006.01) A61L 29/14 (2006.01)

Patent

CA 2644778

A tube-in-tube assembled parison for preparation of an elongated medical device. The parison if formed by assembling in tube-in-tube fashion a first tube of orientable polymer material and a second tube formed of orientable polymer material disposed around the first tube, with an adhesive tie layer disposed between the first and second tubes. The tubes are brought into contact to form a unitary parison. The adhesive may allow movement between the polymer layers during balloon blowing. The first tube, or the second tube, or both, may have been longitudinally pre-stretched after formation thereof but before assembly of the parison.

La présente invention concerne une paraison à double tube destinée à la préparation d'un dispositif médical allongé. La paraison est formée par l'assemblage du type <= un tube dans l'autre >= d'unpremier tube d'un matériau polymère orientable et d'un second tube formé d'un matériau polymère orientable disposé autour du premier tube, une couche de fixation adhésive étant disposée entre les premier et second tubes. Les tubes sont mis en contact pour former une paraison unitaire. L'adhésif permet le mouvement entre les couches polymères lors du gonflement du ballonnet. Le premier tube ou le second tube ou les deux peuvent avoir été étirés longitudinalement au préalable après leur formation, mais avant l'assemblage de la paraison.

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