Evaluation of the healing process after implantation of synthetic material called Tegmentum consisting of polyester mesh covered with polyurethane in rat peritoneum.

Polyester meshes are one of the synthetic prosthetic materials widely applied for the reconstruction of abdominal layers in child and neonatal surgery, cardiosurgery or vascular surgery. Because of the lack or insufficiency of the own, natural material multiple researches are performed in order to find the best material able to replace natural tissue. The most suitable prosthesis ought to be: sterile, non-toxic, soft, flexible, elastic, not very stretchy, durable, easy to operate (cutting, suturing); to create desired shape required while reconstracting, totally resistant to contagion, without any complication after being implanted. Since early seventies many scientists following above requirements have carried out researches to create the most similar prosthesis morphologically and functionally to human tissue but still there is no such an ideal material on the market. Polyester with its derivatives is one of the most commonly applied synthetic substances in surgery. The type of biomaterial highly depends on its purpose e.g.: for vascular prosthesis materials that are resorptive in organism and support tightness (gelatine, albumin, collagen); while for temporal replacement abdominal layers with prosthesis the most suitable is impervious to systemic fluids bacteria etc material, that prevents penetrating the surface of prosthesis by surrounding tissues, adhesions with intestinum or other organs. Tegmentum is a material that posses these features. This is a polyester mesh covered with polyurethane on one side produced by Tricomed S.A. (Łódź). Tegmentum has already been applied to neonates with congenital eventration in Child and Neonatal Ward in the "Szpital Pomnik Matki Polki" hospital in Łódź.