Abstract
Standard methods were used to investigate the physicomechanical characteristics of the main parts of endotracheal tubes produced by six leading world manufacturers. It was shown that the articles have statistically significant, substantial differences in the physicomechanical properties of their main working units: the main tube and the sleeve. The sleeve is the least strong part on which the functionality of the entire article depends. The best strength characteristics are possessed by the Curity sleeve, but at the same time the Curity main tube possesses practically no thermal plasticity. The Rush main tube possesses high thermal plasticity but has the least strong sleeve. Most balanced from the viewpoint of physicomechanical characteristics is the Portex tube. Having sufficient tube elasticity and strength, among the investigated tubes it has the highest thermal plasticity with minimum hardness at body temperature and a sleeve of high strength.
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