Patent ID: 11937901
Assignee: ABOVE CARE INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 4:
5. A method for detecting arteriovenous fistula stenosis, comprising:
disposing a microphone of a sensing device at a first location of a patient, and receiving receive a sound signal, wherein the first location is located on an extended path of an artery or a vein corresponding to an arteriovenous fistula located at a second location on the patient, and the first location and the second location are separated by a first distance;
converting the sound signal to a frequency spectrum signal;
receiving, by a server, the frequency spectrum signal from the sensing device; and
determining, by the server, a stenosis state of the arteriovenous fistula on the extended path of the artery or the vein corresponding to the arteriovenous fistula by using the received frequency spectrum signal as input to a machine learning model,
wherein the machine learning model calculates an estimated stenosis percentage of the arteriovenous fistula, and transmits the estimated stenosis percentage calculated by the machine learning model to the sensing device or a mobile device,
wherein the machine learning model is trained by using a plurality of training frequency spectrum signals and an angiography information corresponding to the training frequency spectrum signals, wherein the angiography information indicates real arteriovenous fistula stenosis condition, and each of the training frequency spectrum signals is respectively obtained from a plurality of training locations, and each of the training locations is different from each other.