抄録
The aim of this study is to develop an accelerated fatigue tester for the Normo valve. Because the Normo valve has a unique structure similar to natural mitral valve, a novel accelerated fatigue tester which can mount the Normo valve and test in the condition recommended by the International Organization for Standardization (IS05840) was developed. We succeeded in producing the targeted closed duration percentage over the defined trans-valvular pressure gradient by adjusting the systolic and the drive frequency. The results showed that the drive condition of 10 Hz in drive frequency and 50% in systolic fraction met the requirement noted in ISO 5840.
