Most end stage renal disease patients receive kidney hemodialysis three to four times per week at central medical facilities. At-home kidney dialysis increases the convenience and frequency of hemodialysis treatments which has been shown to produce better patient outcomes. One limiting factor in realizing home hemodialysis treatments is the cost of the hemodialyzer. Microchannel hemodialyzers produced using compression sealing techniques show promise for reducing the size and cost of hemodialyzers. Challenges include the use of a 25 μm thick elastoviscoplastic (EVP) mass transfer membrane for gasketing. This paper provides a framework for understanding the hermeticity of these compression seals. The mechanical properties of a Gambro AN69ST membrane are determined and used to establish limits on the dimensional tolerances of the polycarbonate (PC) laminae containing sealing bosses used to seal the hemodialyzer. The resulting methods are applied to the fabrication of a hemodialysis device showing constraints on the scaling of this method to larger device sizes. The resulting hemodialysis device is used to perform urea mass transfer experiments without leakage.
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School of Mechanical, Industrial, and
Manufacturing Engineering,
e-mail: Brian.paul@oregonstate.edu
School of Mechanical, Industrial, and
Manufacturing Engineering,
e-mail: warddu@onid.orst.edu
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September 2014
Research-Article
The Hermeticity of Compression Seals in Microchannel Hemodialyzers
Brian K. Paul,
School of Mechanical, Industrial, and
Manufacturing Engineering,
e-mail: Brian.paul@oregonstate.edu
Brian K. Paul
Oregon State University
,School of Mechanical, Industrial, and
Manufacturing Engineering,
Corvallis, OR
97331-6001e-mail: Brian.paul@oregonstate.edu
Search for other works by this author on:
Dustin K. Ward
School of Mechanical, Industrial, and
Manufacturing Engineering,
e-mail: warddu@onid.orst.edu
Dustin K. Ward
Oregon State University
,School of Mechanical, Industrial, and
Manufacturing Engineering,
Corvallis, OR
97331-6001e-mail: warddu@onid.orst.edu
Search for other works by this author on:
Brian K. Paul
Oregon State University
,School of Mechanical, Industrial, and
Manufacturing Engineering,
Corvallis, OR
97331-6001e-mail: Brian.paul@oregonstate.edu
Dustin K. Ward
Oregon State University
,School of Mechanical, Industrial, and
Manufacturing Engineering,
Corvallis, OR
97331-6001e-mail: warddu@onid.orst.edu
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MICRO- AND NANO-MANUFACTURING. Manuscript received April 13, 2014; final manuscript received May 20, 2014; published online July 8, 2014. Assoc. Editor: Chengying Xu.
J. Micro Nano-Manuf. Sep 2014, 2(3): 031006 (9 pages)
Published Online: July 8, 2014
Article history
Received:
April 13, 2014
Revision Received:
May 20, 2014
Citation
Paul, B. K., and Ward, D. K. (July 8, 2014). "The Hermeticity of Compression Seals in Microchannel Hemodialyzers." ASME. J. Micro Nano-Manuf. September 2014; 2(3): 031006. https://doi.org/10.1115/1.4027778
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