Hasegawa M
Second Department of Surgery, Nihon University School of Medicine, 30-1 Oyaguchi Kami-machi, Itabashi-ku, Tokyo 173-0032, Japan.
Ann Thorac Cardiovasc Surg. 2000 Aug;6(4):247-51.
ATS valve is a bileaflet valve developed to have a superior function to traditional prosthetic valves on anti-thrombogenesis and hemolysis. The orifice area was enlarged in consequence of making its orifice with pyrolytic carbon materials, and the pivot was open pivot and the strut was eliminated. The efficiency of this valve has been reported in the Europe. In Japan, its clinical trial was performed in September 1993 and its clinical use was permitted in August 1996. In this study, we compared the functions of ATS and St. Jude Medical (SJM) valves with echocardiography. The pressure gradients at the mitral valve position were not significantly different between ATS and SJM valves, but that of ATS was lower than that of SJM. The pressure gradient at the aortic valve position of ATS was also lower than that of SJM, and especially those of the patients who performed aortic valve replacement with 23-mm ATS and SJM valves were 8.9+/-1.6 and 23.3+/-6.6 mmHg, showing a significant difference. Though further observation and review of this valve are needed at the chronic phase, ATS valve is an excellent bileaflet valve on the valvular function, showing a low pressure gradient.
ATS瓣是一种双叶瓣，其研发目的是在抗血栓形成和溶血方面具有优于传统人工瓣膜的功能。由于采用热解碳材料制作瓣口，其瓣口面积得以扩大，枢轴为开放枢轴且支柱被取消。该瓣膜的效能已在欧洲有报道。在日本，其临床试验于1993年9月进行，1996年8月被允许临床使用。在本研究中，我们通过超声心动图比较了ATS瓣和圣犹达医疗（SJM）瓣的功能。ATS瓣和SJM瓣在二尖瓣位置的压力阶差无显著差异，但ATS瓣的压力阶差低于SJM瓣。ATS瓣在主动脉瓣位置的压力阶差也低于SJM瓣，特别是那些使用23毫米ATS瓣和SJM瓣进行主动脉瓣置换的患者，其压力阶差分别为8.9±1.6和23.3±6.6毫米汞柱，显示出显著差异。尽管在慢性期还需要对该瓣膜进行进一步观察和评估，但ATS瓣在瓣膜功能方面是一种出色的双叶瓣，显示出较低的压力阶差。
