1. A method of fixing the suture material retainer with suture material (4) in the hole (5) in a hard cloth, comprising the steps of: fixing the suture anchor (2) with suture material (4) held by the suture anchor (2), in the hole (5) in the hard tissue by means of a generally known method of fixing and / or temporarily holding the suture anchor in the hole in the hard tissue, and locking the suture anchor (2), fixed and / or retained, by liquefying in situ material having thermoplastic properties. 2. The method according to claim 1, in which, for the fixation step, a hole (5) is first made in the hard tissue, after which the suture anchor (2) is placed and / or held in it or the suture anchor (2) is pushed into solid fabric, thereby creating a hole (5) in the solid fabric. 3. A method according to any one of claims 1 or 2, wherein, in the fixation step, the suture anchor (2) is fixed in the hole (5) in the hard tissue by at least one of: a press fit provided by pushing the suture anchor into the hole in hard tissue or into hard tissue, or expansion of the suture anchor in the hole in the hard tissue, or thread or elastic holding means, such as spikes. 4. A method according to any one of claims 1 or 2, in which suture material (4) is blocked relative to the retainer (2) at the locking step. A method according to any one of claims 1 or 2, wherein the material having thermoplastic properties is contained in the locking element (3), wherein the locking element is an element separate from the suture anchor (2), or1. Способ фиксации фиксатора шовного материала с шовным материалом (4) в отверстии (5) в твердой ткани, содержащий следующие этапы:- фиксацию фиксатора (2) шовного материала с шовным материалом (4), удерживаемым посредством фиксатора (2) шовного материала, в отверстии (5) в твердой ткани посредством, по существу, известного способа фиксации и/или временного удержания фиксатора шовного материала в отверстии в твердой ткани, и- запирание фиксатора (2) шовного мат