Acandis Gmbh & Co. Kg

Clemens Schmutz

Eckhard Quandt

Christiane Zamponi

A method for the production of a structured metal layer () made from an alloy composed of titanium and nickel includes the following process steps: a sacrificial layer composite () is provided, which comprises a second sacrificial layer () applied onto a first sacrificial layer (), the first sacrificial layer () is subjected for the purpose of structuring to a wet-chemical etching process in such a manner that undercutting of the sacrificial layer () occurs, a metal layer () of the alloy is applied indirectly or directly to the structured sacrificial layer composite (). The first sacrificial layer () is at a greater distance from the metal layer (). The second sacrificial layer () facing the metal layer () to be deposited is subjected to a dry etching process prior to wet-chemical etching of the first sacrificial layer () so that the second sacrificial layer () is provided with a structure that corresponds to the desired structure of the metal layer (). The invention further relates to an object, particularly a stent or an implant, which comprises at least one metal layer () that is produced by applying the method for the production of the structured metal layer ().

Method for the production of structured layers of titanium and nickel

A method is provided for applying a cover layer () to a net structure () to be used for medical purposes, in particular a thrombosis filter. The net structure () is applied to a planar substrate () that covers openings () of the net structure on one side, wherein the openings () across the uncovered side are filled with a sacrificial material (), in particular copper. The net structure () is lifted from the substrate (). A cover layer () is deposited on the surface previously covered by the substrate, and the sacrificial material () is removed.

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Kö'ln, Germany

Clemens Schmutz