In search of a 24 hours per day artificial kidney

Area of Science:

• Biomedical Engineering
• Nephrology
• Medical Device Development

Background:

• Conventional intermittent dialysis presents challenges in maintaining stable physiological parameters.
• The development of continuous, wearable artificial kidneys aims to overcome these limitations.
• Miniaturization of dialysis techniques is crucial for patient mobility and convenience.

Purpose of the Study:

• To describe the development of wearable artificial kidneys for continuous hemodialysis and peritoneal dialysis.
• To highlight the benefits of improved physiological parameter control for patients.
• To introduce novel miniaturized sorbent technology for dialysate regeneration.

Main Methods:

• Miniaturization of both hemodialysis and peritoneal dialysis systems.
• Utilization of small REDY cartridges with sorbent materials (urease, zirconium phosphate, hydrouse zirconium oxide, activated carbon) for dialysate regeneration.
• Design of forearm-worn hemodialyzers with low-resistance blood flow paths.
• Regeneration and automated cycling of peritoneal effluent using sorbent cartridges.

Main Results:

• Development of wearable artificial kidney devices for 24/7 use.
• Potential for more stable control of physiological parameters compared to intermittent dialysis.
• Reduced risk of thrombosis in hemodialyzers due to optimized blood flow path design.
• Closed-loop system for peritoneal dialysis with automated effluent regeneration and cycling.

Conclusions:

• Wearable artificial kidneys promise enhanced patient well-being through continuous physiological monitoring and control.
• Miniaturized dialysis technologies, including sorbent-based regeneration, are advancing patient care.
• These innovations are expected to improve both the economic and social circumstances of patients requiring dialysis.