Tissue-compatible medical device and method for manufacturing the same

US4973320A · kind A · utility

Assignee

• Firma Carl Freudenberg · DE

Inventors

• Otto Brenner · Trier, DE
• Wolfgang Ermert · Weinheim, DE
• Helmut Eschwey · Hilden, DE
• Gerd Esswein · Frankenthal (Pfalz), DE
• Gunter Schuhmacher · Weinheim, DE

Key dates

• Filing date: Aug 2, 1988
• Grant date: Nov 27, 1990
• Expiry date: Aug 2, 2008

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L2300/404
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A medical device which can be introduced into the body tissue of a human or animal comprises a matrix of a polyurethane elastomer with organic silicone polymer units built into the main polymer chain and an oligodynamic agent spatially distributed uniformly within the matrix. The oligodynamic agent releases bacteriocidal or microbicidal metal ions when exposed to body tissues. The method for manufacturing the medical device is characterized by the addition of the oligodynamic agent in a solid or dissolved form prior to the reaction of the educts with isocyanate.