Structural Features of Woven Elastic Bifurcated Implant of Aorta

Surgeons use synthetic tubular implants to replace sections of pathologically damaged blood vessels. Various scientists suggest a variety of methods and technologies of manufacture of blood vessels prostheses. Recently innovative designs of woven implants are actively being developed. The purpose of this scientific work is analyzing all features of the last major innovations in the woven vascular graft design and manufacture of elastic bifurcated tubular implants. Therefore, this study briefly describes the main materials, types and methods of manufacturing vascular prostheses. Practical target is desing of new options of elastic structure of tubular implant and manufacturing of new woven bifurcated tubular vascular implant to ensure the best incorporation of the synthetic implant into total vascular system of the body. Vascular implant is manufactured by woven method as a hollow tube consisting of a main tube and the two branches. This product is manufactured using a special weave. In the process of weaving were used polyester and polyurethane yarns. Innovative woven product has the exellent biomechanical properties: circumferentially and longitudial elastic deformation, modulus of elasticity, tensile strength, no water permeability. In previous studies different solutions were used for implant impregnation and various viscosity and structure were trying to to improve water resistance of impregnated woven product. This woven bifurcated elastic vascular implant was impregnated with a solution of biologically active agents. Additional processing provides zero water permeability of the wall. Elastic membrane was formed on the porous wall of the implant and in the space between the fibers. As a result woven frame and special impregnation created a composite matrix. Such processing of implant also provides better biocompatibility with natural body tissues and the successful integration into blood-vascular system. Natural biological tissues grow into the walls of the implant. Neointima is formed on the inner wall into the lumen of the implant. New design and structure of woven elastic bifurcated implant provides the normal long-term process of hemodynamics. A positive result was confirmed by histological tests