At present an actual problem for the surgeon is the choice of suture material. Due to the absence of own manufacturing of suture material in Belarus in the iatrotechnics market the big variety of surgical threads both of popular and little-known manufacturers has been presented. In this connection the performance of research and the analysis of physical properties of suture material have been quite actual. We carried out the comparative analysis of capillarity, as one of the properties of suture material, surgical threads presented in the market of iatrotechnics in Belarus and threads modified by polyparaxilelen covering.

There were explored physical characteristic six polyester surgical threads. Surgical ligature of the metric size 3 (number 2/0) were used. Sutures tested included Ethibond (Ethicon, Great Britain), PremiCron (B.Braun, Germany), Cardioerg (Ergon sutramed, Italy), Ti-Cron (Tyco, USA), Polyester (Volot, Russia), Polyester which poly-p-xylylene (PPX) coating. The results are indicative of significant qualitative superiority of the polyester threads with covering. PPX covering allows qualitative and inexpensively to improve polyester suture material.

Nanotechnology as the science began to be formed in the end of the twentieth century, that first of all has been connected with basic works of Norio Taniguchi and Richard Fejnman and the invention in 1981 of a scanning tunnel microscope by Gerd Binnig and Henry Rorer from Zurich laboratories IBM (Switzerland). Rapid development nanotechnology has begun in the beginning of the twenty first century and is connected with the statement and financing of national programs of development of this branch of a science in the USA, Japan and China. For today nanotechnology as branch of a science greater perspective directions in development of information technologies and electronics, methods of reception of materials and open their processings, preservation of the environment and power, biology and medicine, an agriculture, aircraft and the space industry. In clause the basic historical and basic moments of development nanotechnology as sciences are stated. It is emphasized on already existing and actively developed opportunities nanotechnology as sciences in medical branch. Clause is of interest as in general educational and scientific sense.

The aim of research: to obtain new suture material modified by silver nanoparticles, which has an antibacterial effect, and to study the hemolytic effect on human erythrocytes and toxic effect on the germ cells of cattle. Material and methods. Nylon modified by silver nanoparticles has been used in the research. The methods to determine the hemolytic effect of polymeric materials in vitro and the toxic effects of extracts on bull’s sperm cells were used. The method to determine the hemolytic effect of polymeric materials was reproduced on the extracts obtained on the third and tenth days of the exposure. The results. The hemolysis percentage in all the samples made up less than 2, which made it possible to draw a conclusion about the absence of hemolytic effect of the extracts. The investigation of the effect of the extracts on the bull’s sperm cells revealed a significant increase in the time of sperm motility in the third- and tenth-day exposure samples compared with the control ones: 55, 45 and 32.5 minutes, respectively. Conclusion. The extracts from the suture material modified by silver nanoparticles do not possess a hemolytic effect and do not exert a toxic impact on the germ cells of cattle.