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The article describes a concept of heart valve prosthesis, based on the use of textile material. The goal of the work is to make a fabric prosthesis by using woven yarns made up of polyester. The method for prothesis manufacturing is described. Fabric prosthesis shows encouraging behavior in vitro such as good flexibility, reduced permeability with adapted fabric parameters.

The article examines the nature of morphological changes induced by ageing on polyethylene terephthalate fibers extracted from explanted prostheses. The method for testing a commercial Warp-knitted prosthesis is described. It was found that the implantation involves a transformation of the original crystalline structure as shown by the modulate differential scanning calorimetry scans of yarns extracted from different prostheses.

The article reports on the development of a device that is able to follow the total constraint in the textile structure, the field of deformation of a face and the thermal losses generated in the filaments by friction and deformation in vascular textile prostheses (VTP). The construction of the device on a classical dynamometer is described. Load-elongation curves provide a general knowledge of the mechanical properties of the prostheses.