Medical device balloons with improved strength properties...

Details Medical device balloons with improved strength properties... Medical device balloons with improved strength properties...

A - Human Necessities

61

M

A61M 25/00 (2006.01) B29C 47/00 (2006.01) B29C 47/86 (2006.01)

Patent

CA 2476178

A tubular parison for forming a medical device balloon. The parison is formed of a polymeric material, for instance a thermoplastic elastomer. The parison has an elongation at break which is not more than 80% of the elongation of the bulk polymeric material. The elongation of the parison is controlled by altering extrusion conditions. Balloons prepared from the parisons provide higher wall strength and/or higher inflation durability than balloons prepared from conventional parisons of the same material.

L'invention concerne une paraison tubulaire destinée à la fabrication d'un ballonnet pour dispositifs médicaux. Cette paraison est constituée d'un matériau polymère, tel qu'un élastomère thermoplastique et présente un allongement à la rupture de 80 % maximum à celui du matériau polymère en vrac. On agit sur l'allongement de la paraison en modifiant les conditions d'extrusion. Les ballonnets fabriqués avec ces paraisons présentent des parois plus résistantes et/ou une durée de gonflement plus longue par rapport aux ballonnets fabriqués avec des paraisons classiques obtenues avec le même matériau.

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