Heat exchanger for physiological fluids

Details Heat exchanger for physiological fluids Heat exchanger for physiological fluids

1987-05-26

1989-11-07

Bennet, Henry A.

Heat exchange

Non-communicating coaxial enclosures

Helical conduit means

604113, A61F 712

Patent

active

048785377

ABSTRACT:
A heat exchanger preferably for use in heating physiological fluids includes an inner conduit, an outer conduit, and end caps which seal the outer conduit to the inner conduit to form a flow channel. The inner conduit is preferably of aluminum and the outer conduit and end caps are of an elastomeric material. The end caps are designed to tightly engage the inner conduit and to be solvent bonded to the outer conduit. When the inner conduit elongates because of thermal expansion, the outer conduit elastically deforms so that there is no relative movement between the end cap and the inner conduit. This preserves sterility during temperature variation.

REFERENCES:
patent: 2316376 (1943-04-01), Weiss
patent: 3893507 (1975-07-01), MacCracken et al.
patent: 4231353 (1980-11-01), Kanatani et al.
patent: 4231425 (1980-11-01), Engstrom
patent: 4475584 (1984-10-01), Martin et al.

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