1. A fastening device (101) for implantation in a human or animal solid tissue, comprising a body having a proximal head portion (102) and a distal shaft portion (103) configured to be mounted in said hard tissue, wherein the body of said device has a longitudinal a channel (13) extending distally from the proximal end, the fastening device comprising a liquefiable element inserted or inserted into the longitudinal channel (13), and at least partially liquefied under the influence of energy, proximal side, so that the liquefied material flows from the longitudinal channel through at least one specified hole in the structure of the hard fabric and / or replacing the hard fabric material, and the specified core section has no thread and has a non-circular cross section, and at least a section the rod portion (103) is flat, forming two flat sides, and the rod portion (103) is twisted into a spiral along the entire length of the mounting device with a twist angle ranging from 10 ° to 270 °, while the core portion has at least two holes (14) extending from the longitudinal channel outward, with one hole located on each of these flat sides. 2. The device according to claim 1, in which the rod portion (103) is twisted about a quarter of the spiral. A device according to claim 1 or 2, wherein said head portion (102) has an internal thread. The device according to claim 1 or 2, in which the longitudinal channel (13) is a through channel passing from the proximal end of the device to its distal end1. Крепежное устройство (101) для имплантации в твердую ткань человека или животного, содержащее корпус, имеющий проксимальный головной участок (102) и дистальный стержневой участок (103), выполненный с возможностью крепления в указанной твердой ткани, причем в корпусе указанного устройства имеется продольный канал (13), проходящий дистально от проксимального конца, причем крепежное устройство содержит разжижаемый элемент, вставляемый или вставленный в продольный канал (13), и, по м
