Heat setting of medical tubings

Details Heat setting of medical tubings Heat setting of medical tubings

B - Operations, Transporting

29

C

B29C 55/22 (2006.01) A61M 39/08 (2006.01) B29C 71/02 (2006.01) B29D 23/24 (2006.01) B29C 47/00 (2006.01)

Patent

CA 2225094

The present invention provides a method for fabricating flexible medical tubings (32) comprising the steps of providing a tubing (32) of a polymer material, the tubing (32) having a longitudinal axis and an initial diameter, orienting the tubing (32) along the longitudinal axis of the tubing (32) to reduce the diameter of the tubing (32) to define an oriented diameter, and applying heat to the oriented tubing (32) to heat set the tubing (32) to maintain dimensional stability of the tubing (32) over a temperature to which the tubing (32) will normally be exposed.

L'invention concerne un procédé permettant de fabriquer des tubulures flexibles à usage médical (32). Selon ce procédé, on forme une tubulure (32) constituée d'un matériau polymère, ayant un axe longitudinal et un diamètre initial, on l'oriente suivant son axe longitudinal de façon à diminuer son diamètre et à définir un diamètre orienté, et on applique de la chaleur sur la tubulure orientée (32) pour la thermofixer, de façon à la rendre stable du point de vue dimensionnel aux températures auxquelles elle sera normalement exposée.

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