Pressure adjusting method and device for arteriovenous internal fistula pressing hemostasis

The invention relates to a pressure adjusting method and device for internal arteriovenous fistula pressing hemostasis, which is used for controlling the pressure of a hemostatic gauze for pressing a puncture bleeding part after hemodialysis is completed and completing hemostasis, and comprises the following steps: S1, before a puncture needle is pulled out, setting the pressing pressure on the hemostatic gauze to be the minimum value, respectively acquiring a current first internal fistula tremor index, a first internal fistula blood flow volume and a first internal fistula blood flow velocity; s2, the pressing pressure on the hemostatic gauze is increased to the maximum value, and the puncture needle waits to be pulled out; s3, the current second internal fistula tremor index, second internal fistula blood flow, second internal fistula blood flow velocity and bleeding data are obtained and compared with the first internal fistula tremor index, the first internal fistula blood flow and the first internal fis