METHOD OF PROCESSING A THREAD ESPECIALLY FOR MEDICAL USES

摘要

The invention refers to a method of treating thready materials, especially useful for medical uses, such as production of sutures and the like. The method essentially consists in impregnating a thread of fibres with a solution of collagen containing an antiseptic component consisting of a nanodispersion of bentonite powders modified by intercalation of ions of Ag+ and/or Cu2+ and successively drying. The amount of said metals in the bentonite powder is of 2-8% by weight. The ratio between the ions of Ag+ and Cu2+, when both present, is of 1 : (0,3-0,5). The threads obtained have prolonged antimicrobic properties versus a wide spectrum of gram-positive and gram-negative microorganisms and a decreased toxicity. Moreover they have improved absorpion capacity.