Osmotic Agent Level Maintaining in Wearable Peritoneal Disalysis System

During glucose-based peritoneal dialysis, the ultrafiltration process causes glucose to pass from the peritoneal solution to the blood. The efficiency of wearable peritoneal dialysis hardly depends on the glucose level in the dialysis solution. The paper considers a near-infrared spectroscopy as one of promising method of non-invasive dialysis solution glucose level sensing. Low scattering factor of regenerated dialysate allows direct using of Beer-Lambert law to determine the glucose lever. The proposed continuous monitoring system comprises the 1600 nm laser diode, InGaAs photodiode, control unit and a housing. Laser works in the pulse mode emitting for 10 seconds every 70 seconds. The investigation tests of the system show ability to detect glucose levels in the range of 10-30 g/l with sufficient accuracy.