Study on the compliance of polyurethane polyester composite artificial vascular
Objective To analyze the influence of different application environments on the compliance test results of polyurethane polyester composite artificial vasculars.Methods Different application environments of artificial vasculars were simulated by changing the frequency and pressure of the test.The compliance values of three polyurethane polyester composite artificial vasculars of three different diameters were tested at different frequencies and constant pressure,and at different pressures and constant frequency respectively.Differences in test results were discussed by the T-test.Results For the three diameters of polyurethane polyester composite artificial vasculars used in this study,in the test of different frequencies of constant pressure,the compliance value decreased with the increase of frequency(P＜0.05).In tests with different pressures at a constant frequency,the compliance test value decreased with increasing pressure(P＜0.05).Conclusions The compliance values of polyurethane polyester composite artificial vasculars are obviously affected by the application environment,and this influence changes regularly.In the production,quality control and clinical use of such artificial blood vessels,the characteristics of the intended use site should be fully considered,so as to improve the adaptability of artificial blood vessels to the human body.
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