Sulzer Innotec Ag

Christoph Sprecher

John Antony Peters

Werner Straub

Markus Windler

In the method for producing a surface structure, material is ablated by means of a liquid jet ( ). The jet ( ) is emitted from a nozzle ( ) under high pressure (p). In this an ablation location ( ) is controlledly moved on a surface ( ) of a substrate ( ) to be structured with the production of a predetermined macro-topography ( &prime;) or a largely planar surface, namely through moving the nozzle and/or the substrate. The substrate is in particular part of a surgical implant. The liquid of the high pressure jet ( ) is emitted at a predetermined diameter d of the nozzle with a sufficiently high pressure p so that through the material ablation a linear track ( ) with quasi-fractal micro-topography ( ) is produced. In this the track width D is at least twice as large as d. Values for p and d are provided in the following range: 100 bar<p<3000 bar and 0.1 mm<d<10 mm; or p>3000 bar and d>0.03 mm.

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Davos Dorf, Switzerland

Christoph Sprecher