1. Thread (100； 200； 300), in particular of the type of knotless or self-fixing suture material, containing an elongated base (110； 210； 310) of the thread, which contains protruding fastening elements (120； 220； 320) on its surface for fastening in biological tissues, in particular in human and / or animal tissues, characterized in that the fixing elements (120； 220； 320) have a stiffening coating (130； 230； 330). 2. The thread (100； 200； 300) according to claim 1, characterized in that the stiffening coating (130； 230； 330) is formed only in the region of the anchoring elements (120； 220； 320). Thread (100； 200； 300) according to claim 1, characterized in that the stiffening coating (130； 230； 330) is formed only on the fastening elements (120； 220； 320). 4. Thread (100； 200； 300) according to claim 1, characterized in that the stiffening coating (130； 230； 330) is only partially formed on the anchoring elements (120； 220； 320). Thread (100； 200； 300) according to claim 1, characterized in that the stiffening coating (130； 230； 330) is formed only on the reverse side of the fastening elements (120； 220； 320). 6. The thread (100； 200； 300) according to claim 1, characterized in that the stiffening coating (130； 230； 330) is formed only on the ends protruding from the surface of the thread base, in particular on the tops of the fastening elements (120； 220； 320) in particular on both sides of these elements. 7. Thread (100； 200； 300) according to claim 1, characterized in that the stiffening coating (130； 230； 330) is uniformly formed on the anchoring elements (120； 220； 320). 8. Thread (100； 200； 300) according to claim 1, characterized in that the coated anchoring elements (120； 220； 320) protrude from the surface of the elongated base (110； 210； 310) of the thread. 9. A thread (100； 200； 300) according to claim 1, characterized in that the stiffening coating (130； 230； 330) is from 0.5 wt% to 25 wt%,1. Нить (100； 200； 300), в частности типа безузлового или самофи
