Medical devices employing chain extended polymers

Details Medical devices employing chain extended polymers Medical devices employing chain extended polymers

A - Human Necessities

61

L

A61L 29/04 (2006.01)

Patent

CA 2470392

There is disclosed a method of preparing medical devices such as catheters and balloons involving forming the medical devices from a thermoplastic polymer composition comprising a melt mixture product of at least one terminally reactive polymer and a chain extender. The chain extender comprises a bis- lactam compound, a bis-oxazoline compound, a bis-oxazine compound, or a modified polyamide chain extender. In some embodiments the medical devices so formed exhibit improvements in properties such as burst strength, fatigue resistance, flexibility, durability, impact resistance, puncture resistance, and/or kink-resistance.

L'invention concerne des dispositifs médicaux tels que des cathéters et des ballons formés à partir d'une composition polymère thermoplastique contenant un produit fondu constitué d'un mélange d'au moins un polymère thermiquement réactif et d'un extenseur de chaîne.

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