Blood leakage monitoring system in Hemodialysis therapy

摘要

The blood leakage is a critical problem during Hemodialysis therapy. One of the preventive methods to stop the accident associated with the blood leakage is to install a blood leakage monitoring system. This monitoring system is intended for use by the hemodialysis patients with kidney disorder. The aim of this paper is to present such a design that can automatically detect the blood leakage occurrence on the atriovenous fistula and alert the patient about blood leakage by sound and warning light. This system consists of optical sensor, Microcontroller, Bluetooth Module, Alert Components (LED & buzzer) and Computer. To adsorb the blood due to venous needle dislodgement the absorbent material is used. The sensor detects the light intensity of the absorbent material and gives the output accordingly. In microcontroller, the simple algorithm that defining the sensing of Red color only is made to evaluate. Thus the system gives the result by sensing red color only. When the blood accumulates the absorbent material, the microcontroller enables the alert components and also this blood leakage occurrence is transmitted to the computer via Bluetooth module. Thus the healthcare workers can take essential action immediately to prevent the undue blood loss during Hemodialysis therapy.