The device that kidney Fistula pipe narrows is washed in a kind of judgement of this creation system pass what: being to receive one using audio signal reception device one of on a carrier to wash the audio signal that one of nephrosis trouble is washed in kidney Fistula pipe, and the audio signal is transmitted to a processing unit, which judges that this washes whether kidney Fistula pipe narrows according to the audio signal. When being not available for washing kidney when the degree that narrows for washing kidney Fistula pipe is excessively high, the processing unit controls an alarm unit and issues an alerting, reminds sufferer and medical staff that should wash washing kidney Fistula pipe and may crossing what and narrow and need to carry out vascular puncture plasty or establish a new kidney Fistula that washes managing for nephrosis troubleing. Wherein, which is preferably the running gear of sufferer, can be used as a kind of role for assisting monitoring Fistula tubulose state.本創作係關於一種判斷洗腎瘻管窄化之裝置：係利用一載具上之一收音裝置接收一洗腎病患之一洗腎瘻管中的一音頻訊號，並將該音頻訊號傳輸至一處理單元，該處理單元根據該音頻訊號判斷該洗腎瘻管是否窄化。當該洗腎瘻管的窄化程度過高而不可進行洗腎時，該處理單元控制一警示單元發出一警示訊號，提醒病患及醫護人員該洗腎病患之洗腎瘻管可能過於窄化而需進行血管穿刺成形術或建立一新的洗腎瘻管。其中，該處理單元較佳是病患之行動裝置，可作為協助監控瘻管狀態的一種角色。
