THERMAL RESISTANCE HEATER
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United States of America Patent
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Issued Date -
Nov 12, 2020
app pub date -
Jun 5, 2019
filing date -
Jun 6, 2018
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Abstract
A thermal resistance heater with a thermal conductive shell that is used to contact with tumor tissues and conduct heat therefor is provided. A thermal resistance is disposed inside the thermal conductive shell and is self-heated via current. The thermal energy is converted from the electrical energy according to Joule's Law. The heater includes a heat radiator disposed inside the shell and is used to disperse the heat generated by the thermal resistance and conduct the heat to the shell evenly. A thermal-conduction compensation arm and the heat radiator are contacted for achieving that a temperature of the shell is the same with a specific place or an error there-between is within a threshold. A temperature sensor is used to obtain a surface average temperature of the conductive shell by collecting temperatures over the thermal-conduction compensation arm. By adjusting position the temperature sensor is disposed on thermal-conduction compensation arm, the temperature sensed by the temperature sensor can be the same with a surface temperature of a heating zone of the shell or an error there-between is within a threshold. It achieves that a controller precisely controls a surface temperature of heater.
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