The claimed invention relates to medical devices, in particular to the devices that can be used in the manufacture of implants for endoprosthesis replacement of soft or vascular tissues, replacement of the corresponding tissue in cardiology, vascular surgery, traumatology and orthopedics, dentistry. The porous three-dimensional structure of polytetrafluoroethylene was created featuring an enhanced ability of soft tissue ingrowth, or, in the second embodiment, combining the properties of an enhanced ability of soft tissue ingrowth with a barrier for the deposition of the living tissue cells. In the first embodiment of the claimed porous three-dimensional structure of polytetrafluoroethylene it contains the open through pores and the blind pores, uniformly distributed over the inner surfaces of the open pores and connected therewith, and is made of mixture of the free-flow polytetrafluoroethylene having the granules sized from 100 to 300 microns, and the constraint- flow polytetrafluoroethylene having the granules sized up to 20 microns. In the second embodiment of the claimed porous three-dimensional structure at least one surface of the three-dimensional body is provided with a barrier layer. In addition, the dental implant, the vascular implant and the tissue implant for soft tissue substitution plasty using the claimed porous structure are claimed.La présente invention concerne des dispositifs médicaux, en particulier des dispositifs qui peuvent être utilisés dans la fabrication dimplants pour le remplacement dendoprothèses de tissus mous ou vasculaires, le remplacement du tissu correspondant en cardiologie, en chirurgie vasculaire, en traumatologie et en chirurgie orthopédique, et en dentisterie. La structure poreuse tridimensionnelle de polytétrafluoroéthylène a été créée pour présenter une capacité améliorée dinterposition de tissus mous, ou, dans le second mode de réalisation, la combinaison des propriétés dune capacité améliorée dinterposition de tissus mous
