Method for maintaining sterile slush

Details Method for maintaining sterile slush Method for maintaining sterile slush

1994-03-16

1995-04-04

Sollecito, John M.

Refrigeration

Using electrical or magnetic effect

Thermoelectric; e.g., peltier effect

62 66, 62135, F25B 2102

Patent

active

054026440

ABSTRACT:
Sterile surgical slush is maintained at substantially its freezing temperature to prevent both melting and formation of solid ice pieces. The slush is initially formed in a refrigeration mode wherein a basin containing sterile fluid medium is cooled to well below the freezing temperature of the medium to thereby rapidly lower the medium temperature. Upon formation of the slush the system is placed in a maintain mode wherein the container temperature is kept at the freezing temperature of the medium. In the preferred embodiment the maintain mode is effected by electrically energizing one or more thermoelectric modules and deenergizing a refrigeration system in which the refrigerant fluid is passed through an evaporator disposed in thermal energy transfer relation to the basin. In alternative embodiments the refrigeration system itself is controlled to keep the container temperature at the freezing point during the maintain mode.

REFERENCES:
patent: 4393659 (1983-07-01), Keyes et al.
patent: 4474016 (1984-10-01), Winchell
patent: 4934152 (1990-06-01), Templeton
patent: 5163299 (1992-11-01), Faries, Jr. et al.
patent: 5331820 (1994-07-01), Faries et al.
patent: 5333326 (1994-08-01), Faries et al.

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