Applications of lipss in polymer medical devices

Details Applications of lipss in polymer medical devices Applications of lipss in polymer medical devices

A - Human Necessities

61

M

A61M 25/00 (2006.01) B23K 26/00 (2006.01)

Patent

CA 2584526

Medical devices have material that that has a laser induced periodic surface structure (LIPSS) pattern on at least a portion thereof. The LIPSS pattern is provided by exposing a material surface to a pulsed polarized laser energy fluence below the ablation threshold. The LIPSS pattern is useful for purposes such as reducing contact areas on sliding surfaces, increasing total surface area for adhesions, providing anisotropic reinforcement of a material layer or layers, and to provide multiple channels for directing cell growth.

L'invention concerne des dispositifs médicaux comprenant un matériau présentant un motif de structuration périodique de surface induite par laser (LIPSS) sur au moins une partie de ceux-ci. Le motif LIPSS est obtenu par exposition d'une surface du matériau à une fluence énergétique de laser polarisé pulsé au-dessous du seuil d'ablation. Le motif LIPSS est utile, par exemple, dans la réduction de zones de contact sur des surfaces coulissantes, l'augmentation de la surface active totale destinée à des adhésions, l'obtention de renfort anisotrope d'une ou plusieurs couches de matériau et l'obtention de plusieurs canaux permettant de diriger la croissance cellulaire.

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