Porous Three-Dimensional Structure of Polytetrafluoroethylene (Versions), Dental Implant, Vascular Implant and Tissue Implant for Substitution Plasty of Soft Tissues

摘要

A 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 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 porous three-dimensional structure at least one surface of the three-dimensional body is provided with a barrier layer.

主权项

1. A material for implantation made of a mixture of free-flow polytetrafluoroethylene and constrained-flow polytetrafluoroethylene, the free-flow polytetrafluoroethylene comprising granules having a size from 100 to 300 microns, the constrained-flow polytetrafluoroethylene comprising granules having a size to 20 microns;
the material for implantation having a porous three-dimensional polytetrafluoroethylene structure formed as a three-dimensional body; the structure comprising open through pores and dead-ended pores uniformly distributed over inner surfaces of the open pores and connected with the inner surfaces; wherein a cumulative volume of the open pores is greater than a cumulative volume of the dead-ended pores, and wherein an average size of the dead-ended pores ranges from 0.01 to 1.0 of an average size of the open pores.