The duration of use of an endovascular fistula is based on a number of factors, firstly, the establishment of the endovascular fistula, secondly, the maintenance of the endovascular fistula during its use, and then the result of the production of the endovascular growth of the fistula itself, whether it is due to too severe stenosis, etc. Each individual endovascular fistula is different, for example, an individual patient can use it for more than ten or twenty years without once performing the expansion of the intra-scopic balloon and always use it well. However, there are some patients who do not use it for long after it is established, so it varies from person to person. Overall, the goal for the use of an endovascular fistula is to be able to get to at least 1-2 years before maintenance. The goal for artificial vessels is to be used for more than 2 years according to the guidelines, but it is relatively difficult, and the patency rate will be better after the second maintenance is completed. Therefore, the lifespan of an endovascular fistula and the length of time it lasts depends on the fistula itself, as well as on the targeted attention and maintenance by the health care provider, and also on the overall systemic condition of the patient, among other factors.