FIELD: medicine.SUBSTANCE: group of inventions relates to medical equipment, specifically to surgical clips, more specifically to polymer ligature clips having improved retention capacity. Ligature clip comprises a first leg and a second leg, a first row of uniformly spaced ribs and a second row of spaced apart ribs. Each leg has a proximal end and a distal end. Each leg has an inner surface and an outer surface. Feet are made with possibility of rotation around hinge from open position, in which possibility of arrangement of inner surfaces of legs around vessel or duct, into closed position, in which the distal ends are connected by constipation and provide the possibility of compression of the vessel or duct between the inner surfaces of both legs. First row of uniformly spaced ribs protrudes from the inner surface of the first leg. Second row of uniformly spaced ribs protrudes from the inner surface of the first leg. Rows are spaced from each other around longitudinally passing central line along inner surface of first leg. Ribs of the first row are offset relative to the ribs of the second row. In the ligature clip, at least one first row rib includes a base extending from the inner surface of the first leg. Base has one end facing the longitudinally passing central line of the inner surface of the first leg, and a tooth having a sharp tip protruding beyond this one end of the base and extending in the direction from the inner surface of the first leg. First row tooth extends in the direction of the longitudinally extending central line along the length of the inner surface of the second leg. At least one rib of the second row includes a base extending from the inner surface of the first leg. Base of at least one rib of the second row has one end facing the longitudinally extending central line of the inner surface of the first leg, and a tooth having a sharp tip, protruding beyond this one end of base of said at least one rib of second row and extending in dire
