Biotronik Ag

Sulzer Innotec Ag

Markus Windler

John Antony Peters

Werner Straub

Thomas Eutin

Christoph Sprecher

A device for producing purified, especially high-purity, magnesium includes a reactor for vacuum distillation that is extended along a longitudinal axis (L). The reactor defines a reactor inner chamber having a heating region for heating magnesium. A crucible forms a crucible inner chamber for receiving purified magnesium vaporized and condensed by the device. A radial projection in the heating region defines a contact surface that extends essentially transverse to the longitudinal axis (L) and forms an essentially sealed connection with an edge of the crucible adjacent to the crucible inner chamber.

Device and method for production of purified magnesium

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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Hofstetten, Switzerland

Markus Windler