The possibility of polyoxymethylene (POM) as heart valve leaflet material was investigated by comparing the hemocompatibility with that of 316L stainless steel and low-temperature isotropic pyrolytic carbon (LTIC). Surface hydrophobicity was characterized by water contact angle measurement.Platelet adhesion, APTT/PT/TT and hemolysis rate tests were applied for evaluating hemocompatibility. The results showed that POM was hydrophobic and had a low hemolytic rate, adhesion amount and activation degree of platelets on POM surface were less than 316L stainless steel, and was similar to LTIC. This research pointed out potential application of POM as heart valve leaflets.
In recent years, the field of cardiovascular surgery has undergone revolutionary changes and made rapid progress in various aspects, bringing more hope and possibilities for the health and well-being of patients. As in every era full of change, opportunities and challenges always coexist. The constant emergence of new technologies brings new opportunities and hope, as well as constant challenges to past concepts. This article aims to comprehensively summarize the latest developments in cardiovascular surgery, especially since 2023, introduce cutting-edge knowledge and technologies in the field of cardiovascular surgery, and deeply analyze and explore future development directions, in order to provide useful references and inspirations for cardiovascular doctors and jointly promote the continuous progress of cardiovascular surgery in China.