Toray Industries, Inc., announced today that it has developed FILTRYZER® HDF, Japan’s first polymethyl methacrylate (PMMA) hollow fiber membrane-based hemodiafiltration device. The wholly owned Toray Medical Co., Ltd., will begin marketing this new offering in December 2021.

Tokyo, Japan, November 15, 2021 – Toray Industries, Inc., announced today that it has developed FILTRYZER® HDF, Japan’s first polymethyl methacrylate (PMMA) hollow fiber membrane-based hemodiafiltration device. The wholly owned Toray Medical Co., Ltd., will begin marketing this new offering in December 2021. 

Following extensive hemodiafiltration development efforts leveraging its technologies, in August 2021 the company obtained manufacturing and sales approval for this product, which qualified for insurance coverage as of November 1.


Broadly, two therapies employ artificial kidneys, the first is hemodialysis with dialyzers, the second is hemodiafiltration with hemodiafilters, which combines hemofiltration and hemodialysis. The Japan Society for Dialysis Therapy estimates that the hemodiafiltration devices accounted for 42% of the market at the end of 2019.

More than 80% of hollow fiber membranes in hemodiafilters in Japan are made of polysulfone. Demand has risen for other materials, including because of allergic reactions and other biocompatibility issues and uremic toxin removal performance needs.

Toray is the world’s sole manufacturer of dialyzers incorporating PMMA hollow fiber membranes. They have earned excellent reputations in Japan and numerous other nations for excellent biocompatibility and uremic toxin removal.

In 2007, the company obtained approval to manufacture and sell Japan’s first polysulfone hollow fiber membrane hemodiafilters, thereafter evolving them. The new PMMA hemodiafiltration device underscores its ongoing commitment to meeting diversifying dialysis market needs.

Under Toray Group Sustainability Vision, the company seeks to contribute to better medical care and hygiene for people worldwide by leveraging its innovative technologies and advanced materials. Toray and Toray Medical will keep drawing on these capabilities in developing high value-added medical supplies using advanced material technologies to materialize its corporate philosophy of contributing to society through the creation of new value and thereby increase sustainable growth.

Product details

Trade Name : FILTRYZER HDF
Generic name : Hemodiafiltration device
Medical Device Approval Number : 30300BZX00233000
Classification : Class III, Japan