NASCIMENTO, A. F.; http://lattes.cnpq.br/4799364421798577; NASCIMENTO, Alessandro Ferreira do.
Abstract:
The suture threads are considered invasive medical products used for approximation
of biological tissue and, due to contact with the skin, vasculature and other tissues,
are considered a critical product. This paper proposes an evaluation of one of the
wires with the largest number of technical complaints notified to ANVISA, the suture
of polypropylene, which is used in various surgical procedures which require inert
mechanical support to the tissue and thus a substantive assessment of the nature
physical chemistry of the material used in commercial samples is important to guide
a process of health certification in order to minimize the risk to patients. The
polypropylene suture was used as the analysis model, being selected the surgical
wire number 0 (zero) to 75cm long; 4 samples of polypropylene sutures were
selected according to the pattern of notifications received by the area of technical
surveillance of ANVISA as a model for the implementation of the testing of X-ray
diffraction, optical microscopy, scanning with EDS mapping by electron microscopy,
FTIR, atomic force microscopy, thermal analysis and mechanical testing. The results
presented demonstrated distinct profiles on the morphological and mechanical suture
wires of selected aspects, prompting the construction of a set of analyzes of those
currently recommended for the registration of these products, as well as the
establishment of a certification process that would be done by harmonizing testing
parameters morphological and mechanical characterization of the suture capable of
ensuring a greater homogeneity in the commercially available suture threads.