Produção e avaliação de fios de sutura (simples e duplo torcidos) à base do biopolímero quitosana técnica de fiação úmida.

Abstract

In recent years, due to major technological advances facing areas related to health and lifestyle, such as the development of new products, used for example in implants and related products to the pharmaceutical industry, the life expectancy of Brazilians has increased . However, this advance has also provided the number of searches of the increase in the medical area. Therefore, several investments have been applied on biomaterials, both in medicine and in the pharmaceutical field. The sutures are part of this material are used in surgery and to seal blood vessels and tissues approach in the treatment of disease or mechanical injury. The aim of this study was to produce simple sutures (monofilament) and double twisted wire to the chitosan base, a natural polymer derived from chitin which has stimulant properties of the immune system that accelerate wound healing. It was used for development of yarn wet spinning technique. the morphology of the wires produced with the aid of optical microscope and later with the scanning electron microscope were analyzed, have recognized that the single yarn showed smooth and compact appearance and partially smooth double wires. We also evaluated the tensile strength by a universal testing machine the warp and simple double strands, the concentration of 3 and 4% chitosan with node without node, in which stood out with greater resistance twisted double yarns to 3 % unknotted and simple to 4% with node compared to the results required by the Brazilian standard suture wires Surgical NBR13904 2003, the Brazilian Technical Standards Association (ABNT), for the type catgut wires.