Biotronik Mess-und Therapiegerate Gmbh & Co Ingenieurburo Berlin

Biotronik Mess-und Therapiegerate Gmbh & Co.

Biotronik

Michael Amon

Armin Bolz

Dirk Mussig

A method of producing a biocompatible prosthesis based on a substrate made essentially of metal or ceramic. The substrate is placed into a reactor chamber of a cathodic vapor deposition arrangement and the chamber is evacuated to a predetermined pressure. A predetermined, negative bias voltage is then applied to the substrate and the substrate is surface treated by adding an etching gas to the reactor chamber, at a predetermined, first flow rate and coupling in a high frequency power with a first, predetermined power density for ionic etching for a first, predetermined period of time. The surface treated substrate is separated from the negative bias voltage and a semiconductor cover layer is chemical vapor-phase deposited on the substrate by adding to the reactor chamber a multi-component mixture of process gases containing a semiconductor element in bound form at a second, predetermined flow rate and coupling-in of HF power with a predetermined, second power density, for a second, predetermined time period.

Method of producing a biocompatible prosthesis

A method of producing a biocompatible prosthesis based on a substrate made essentially of metal or ceramic. The substrate is placed into a reactor chamber of a cathodic vapor deposition arrangement and the chamber is evacuated to a predetermined pressure. A predetermined, negative bias voltage is then applied to the substrate and the substrate is surface treated by adding an etching gas to the reactor chamber, at a predetermined, first flow rate and coupling in a high frequency power with a first, predetermined power density for ionic etching for a first, predetermined period of time. The surface treated substrate is separated from the negative bias voltage and a semiconductor cover layer is chemical vapor-phase deposited on the substrate by adding to the reactor chamber a multi-component mixture of process gases containing a semiconductor element in bound format a second, predetermined flow rate and coupling-in of HF power with a predetermined, second power density, for a second, predetermined time period.

Biocompatible prosthesis

A method of attaching heparin to, and immobilizing it on, inorganic substrate surfaces of cardiovascular implants such as cardiac valves or alloplastic vessel wall supports, comprising the following steps:

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Dormitz, Germany

Michael Amon