The unique patented matrix-saving method of chemical-enzymatic processing of raw materials allows to completely destroy and remove from the tissue cellular elements and glycosaminoglycans of the intercellular substance as the main carriers of antigenicity. Processed biological tissue, devoid of cells and species specificity, has excellent biologically-compatible properties. The implant acts as a matrix for settling recipient cells, vascularizing and transforming into its own healthy tissues and metabolizing according to the laws of natural processes.