DE3125073A1 - COATED IMPLANT - Google Patents

Description

Coated implant

Field of application of the invention

The invention can be used for a limited time when all are used or AlIoplantate permanently introduced into the organism, completely or partially covered by the body surface.

Characteristics of the known technical solutions

It is known to provide implants with 'body-like ¹ layers in order to thereby achieve tolerance of the implant by the body. The coating is carried out for various reasons, such as, for example, to refine the substrate surface, for corrosion protection, for passivation and / or to improve the adaptation of the implant to the body.

It is known to coat implant surfaces in order to prevent the natural diffusion of the ions of the implant material by passivating it, e.g. B. by Si ₂ -If H, and at the same time to produce a physiologically active implant surface in order to achieve an identity between the implant surface and the implant bed. This is done by applying a layer system or a layer depending on the type of implant material (DD-WP 133-518).

It is also known that carbon-containing layers enable the implant to be tolerated in the body. The-

But I se layers have a poor adhesion to) Impl & ntatoberfläche on. To improve the adhesive strength, z _o B ₀ layers of high-temperature polymers are applied as an intermediate layer, which is technologically complex (US-Ps 3,952 * 334) *

Object of the invention

The aim of the invention is to produce implants with a firmly adhering one that is accessible to the metabolism Surface layer that ensures that biochemical binding forces remain effective even over longer periods of time. "

Explain the essence of the invention

The object of the invention is to _{produce 9} implants which, with the same biological constitution of the recipient, achieve an unlimited length of stay and in which the bond between the layer and the implant is improved,

The solution according to the invention is that an implant with a layer of organic molecules that contain a M @ t®llatom, in particular from üfetallphthaloeyanin or its derivatives. This metal atom in metal phthaloeyanine enables one good bond between implant and layer, it has proven to be beneficial if the metal atom is an element ist9 da® is elementary in the implant or as an alloy or compound present «

15s is achieved that the bond between the implant and the layer respectively, significantly increases the adhesive strength of the layer and simultaneously the surface of the implant is designed on the basis of the structure and chemical composition of the metal phthalocyanine as ₉ that it is accessible to the metabolism and the formation of a ' Pseudoperiodontium ¹ allows. The Metallphth & locjanin is either vapor-deposited; applied by mechanical means, preferential

wisely through. Rub the substance on the surface of the Implant, or chemically formed directly on the surface of the implant *

To the formation of the ^f Pseudoperiodontiums to improve ', the application of the metal phthalocyanine can be carried out so that the surface is increased by structuring. It is also possible to add physiologically active substances, in particular amino acids, to the metal pithhalocyanine and / or its derivatives.

Embodiment

The invention is explained in more detail on the basis of exemplary embodiments explained.

A titanium implant is provided with a layer of titanyl phthalocyanine. This Phthalocyaninschicht is evaporated at a pressure of 1 x 10 Pa and a temperature of 500 ⁰ G. The thickness of the layer is dependent on the evaporation temperature and the evaporation time, which is dependent on the implant Schicntmorphologie Tempera door.

Mechanically z. B. a metal phthalocyanine layer Rubbing applied.

The Metallphthalocyaninschicht chemically produced is produced by heating the implant to 300 ⁰ C and additional treatment with phthalodinitrile or a mixture of phthalonitrile and O-cyanobenzamide.

The structuring of the metal phthalocyanine surface takes place through a defined combination of physical and vacuum-technical parameters. In addition, a-alanine can be used as Layer, e.g. B. be applied by evaporation.

Claims (1)

rkc <i: nce / s? & pr \ .cn & p Λ. Coated implant ₉ characterized in that an implant with a layer of organic molecules _s @athalten a metal atom, in particular from metal phthalocyanine or its derivatives ,, is provided α 2, coated implant ü & gL · PrniJst 1, marked “that the metal phtmlocyanine contains a metal” because the implant is developed ” Coated implant according to point 1 and 2, thereby d®ß metal phthalocyanine © vaporized 4- B layered Impjssrfeat after Pxaakt 1 and 2, characterized 9 that the metal phthalocyanine is applied in a meehani * = schea way, _{9 as a} precautionary measure by rubbing the substance on the surface of the implant » 5 «A coated implant according to item 1 and 2 ₉ characterized in that _P is the M @ t®llphth®locyanin formed directly on the implant Oberfläch® dea chemically" 6, coated implant according to item 1 to 5 _{9 9} characterized in that the surface of Metallphthalocjanins is structured. " Coated implant according to items 1 to 6, characterized in that physiologically active substances _9, in particular amino acids, are attached to the metal phthalocyanine and / or its derivatives.