Researchers Develop Artificial Kidney with Diamond-Based Filtration System

November 21, 2008 – 5:32 pm

A patent has been filed for an implantable artificial kidney that uses a diamond-based filtration system. Developed by William Fissell at the Cleveland Clinic in Ohio and colleagues at the University of Michigan, the filter reportedly can avoid problems typically associated with kidney dialysis.

Unlike conventional dialysis filters, the artificial kidney can efficiently screen out medium-sized proteins such as ?2-microglobulin, which can be toxic in large quantities. Conventional dialysis filters have trouble with large proteins, which can block pores in the filter that are designed to remove midsized compounds.

The artificial kidney relies on a filter made from a series of diamond layers drilled with successively smaller microscopic holes. Each layer of diamonds only allows molecules below a certain size to pass through. The device employs an electric field to deflect large proteins that potentially could clog the filter. As a result, the filter is more effective at removing toxic molecules from the bloodstream than conventional membranes, according to its developers.

Source: New Scientist

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  1. 3 Responses to “Researchers Develop Artificial Kidney with Diamond-Based Filtration System”

  2. Hi!

    Can you please tell me the name of the company or manufacturer of the Diamond-based artificial kidney?

    Thank you!

    By Robin on Jan 15, 2010

  3. I would recommend going straight to the source, William Fissell. His contact information is posted on this page:, or you can click on the link in the post.

    Best regards,
    Norbert Sparrow

    By norbert on Jan 16, 2010

  4. Any information on the cost of dialysis with that artificial kidney? My aunt is on dialysis now, so this might be a better option.

    By Mary on Mar 9, 2010

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