Vincent Garvey from Meath, has created a low-cost version that's smaller than a suitcase.
It also runs on solar power and makes its own sterile water to wash toxins out of the body.
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It means patients in the developing world can now be offered treatment, where traditionally it was too expensive or difficult to access.
The Irish Times says Mr Garvey has been awarded a major international prize for his work to mark World Kidney Day yesterday.