Surface treatment for micro-conduits employed in blood heat exch

Chemical apparatus and process disinfecting – deodorizing – preser – Blood treating device for transfusible blood – Oxygenator

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422 44, 261DIG28, A61M 114

Patent

active

059222816

ABSTRACT:
Blood heat exchanger apparatus with improved heat exchanged capability and improved bonding of micro-conduit heat exchange fibers. The micro-conduit comprises a plurality of elongated fibers, which may be made of a hydrophobic material such as polypropylene or polyethylene. The micro-conduit fibers may be provided as a heat exchanger micro-conduit wrapping material, wherein the micro-conduit fibers are attached to a thin flexible interconnect, such as woven netting, to maintain the fibers at predetermined and substantially parallel alignment with each other. The wrapping material is wrapped about an elongated spindle to provide a generally cylindrical heat exchange core. A shell is placed around the core to contain the heat transfer fluid which passes around the exterior of the fibers. Opposing first and second seals are created by applying potting compound between fibers proximate the spindle's first and second ends respectively. The surface chemistry of the fibers is modified by a treatment such as corona treatment process to facilitate bonding of the seals which comprises a potting compound such as urethane.

REFERENCES:
patent: 3697635 (1972-10-01), Dietzch et al.
patent: 4265276 (1981-05-01), Hatada et al.
patent: 4329229 (1982-05-01), Bodnar et al.
patent: 4554076 (1985-11-01), Speaker
patent: 4975247 (1990-12-01), Badolato et al.
patent: 5211913 (1993-05-01), Hagiwara et al.
patent: 5270004 (1993-12-01), Cosentino et al.
Maxima Hollow Fiber Membrane Oxygenator--four page brochure (undated).
Minimax Plus Oxygenation Systems--five page brochure (undated).

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