US 12,522,944 B2 · Method for the surface treatment and/or manufacture of a medical product, and medical product

Abstract

A medical product and a method of surface treatment and/or manufacture of a medical product. The medical product includes a metal or an alloy or consists of a metal or an alloy. The method includes the following steps: a) dulling a surface of the medical product, b) electropolishing the dulled surface of the medical product, c) electrochemically etching the dulled and electropolished surface of the medical product and d) electropolishing the dulled, electropolished and electrochemically etched surface of the medical product. The medical product has at least one of the following features: a pitting corrosion potential of 100 mV to 1200 mV, and/or a contact angle of 80° to 140°, and/or a passive layer having a thickness of 1 nm to 10 nm, which coats at least sections of the surface of the medical product.

Claims20

Dependent claims

A method of surface treatment and/or manufacture of a medical product, the medical product comprising a metal or an alloy, wherein the method comprises the sequence of steps in the following order:

a) dulling a surface of the medical product;
b) electropolishing the surface of the medical product;
c) electrochemically etching the surface of the medical product;
and
d) electropolishing the surface of the medical product,
wherein step b) and step d) are each conducted at a voltage of 2.0 V to 10.0 V and/or step b) and step d) are each conducted at a current density of 5 A/dm2 to 50 A/dm2,
and wherein step c) is conducted at a voltage of 1.2 V to <2.1 V and/or at a current density of 1.4 A/dm2 to 2.4 A/dm2.

4 more elements

Dependencies are inferred from the claim text.

Method for the surface treatment and/or manufacture of a medical product, and medical product

Life of this patent

Method for the surface treatment and/or manufacture of a medical product, and medical product

Life of this patent

Abstract

Claims20