Bioactive prostheses with immunosuppressive, antistenotic and antithrombotic properties
First Claim
1. Bioactive implant comprising a substrate wherein a surface is made of an electrically conductive material chosen from metals, metallic alloys, semi-conductor materials, conductive polymers, composite materials, ceramics, carbon fibres or their mixtures, said surface being coated with a polymer or copolymer layer with reactive functions grafted by means of a covalent bond on the substrate surface, said layer having reactive functions and being grafted by electro-copolymerization, and a bioactive substance fixed on the implant by means of said reactive functions to enable progressive release on an implant site.
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Abstract
The invention relates to a bioactive implant comprising a substrate coated with a polymer layer with reactive functions, and a bioactive substance fixed on the implant by means of said reactive functions to enable progressive release on the implant site.
Such implants are useful in the field of cardiology for example to prevent restenosis resulting from the fitting of stents in the coronary arteries.
91 Citations
24 Claims
- 1. Bioactive implant comprising a substrate wherein a surface is made of an electrically conductive material chosen from metals, metallic alloys, semi-conductor materials, conductive polymers, composite materials, ceramics, carbon fibres or their mixtures, said surface being coated with a polymer or copolymer layer with reactive functions grafted by means of a covalent bond on the substrate surface, said layer having reactive functions and being grafted by electro-copolymerization, and a bioactive substance fixed on the implant by means of said reactive functions to enable progressive release on an implant site.
Specification