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Inline heat exchanger and cardioplegia system

  • US 5,403,281 A
  • Filed: 09/25/1992
  • Issued: 04/04/1995
  • Est. Priority Date: 09/25/1992
  • Status: Expired due to Fees
First Claim
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1. A heat exchanger for heating or cooling blood and/or cardioplegia solution, the heat exchanger comprisinga flexible-resilient inner tube defining an inner flow path for a first fluid comprising one of (a) blood and/or cardioplegia solution, and (b) heat exchanging fluid;

  • anda flexible-resilient outer tube surrounding the inner tube and having fluid inlet and outlet ports so as to define an outer flow path between the inner and outer tubes for a second fluid comprising the other of (a) blood and/or cardioplegia solution, and (b) heat exchanging fluid, the outer tube being sealingly connected to the inner tube adjacent opposite ends of the outer flow path;

    the inner tube defining a barrier between the first and second fluids while permitting heat transfer between the first and second fluids; and

    the inner and outer tubes each being formed of resiliently-flexible material that allows the entire heat exchanger to be flexed.

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