Thermal treatment apparatus

Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...

Reexamination Certificate

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Reexamination Certificate

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06849063

ABSTRACT:
A temperature-setting device for providing a predetermined temperature to a quantity of fluid circulating therethrough, a thermal treatment apparatus including such device for selectively treating a targeted tissue adjacent a subject's body cavity, and techniques using such thermal treatment apparatus are provided. The temperature-setting device comprises: an electrically conducting tubular element, a housing element for receiving the tubular element; and a transformer electrically connectable to the housing element. The tubular element functions as a resistor and heats the fluid circulating therethrough. Alternatively, the housing element comprises a thermal conducting member disposed within a bath of a cooling substance, the thermal conducting member having a recess for receiving the tubular element. The tubular element may alternately be placed in a housing element functioning as a heater and a housing element functioning as a cooler, thereby alternately heating or cooling the fluid circulating therethrough. The thermal treatment apparatus comprises: a temperature-setting device according to the present invention; a catheter insertable into a subject's body cavity, the catheter including a thermal treating section for thermally treating a targeted tissue; a pump; thermal sensor assemblies; and an air trapping element.

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