A medical tube that contains a polymer composition that is generally flexible and biocompatible is provided. The polymer composition contains at least one ethylene vinyl acetate polymer and at least one viscoelastic additive. By selectively controlling specific aspects of the ethylene vinyl acetate polymer (e.g., vinyl acetate content, melt flow index, density, etc.), the viscoelastic additive, and the manner in which they are blended, the resulting composition can exhibit a reduced tendency to kink when formed into the medical tube.本發明提供一種醫用管件，其含有通常為可撓且生物相容之聚合物組合物。該聚合物組合物含有至少一種乙烯乙酸乙烯酯聚合物及至少一種黏彈性添加劑。藉由選擇性控制該乙烯乙酸乙烯酯聚合物的特定態樣(例如，乙酸乙烯酯含量、熔融流動指數、密度等)、該黏彈性添加劑及將其等摻合之方法，所得組合物在形成為該醫用管件時可呈現降低的扭結傾向。
