If the temperature value of the radio frequency operation object is still beyond the temperature range when the injection flow rate of the injection pump reaches a limit value for temperature adjustment, the control of the injection flow rate is stopped, and the temperature is further adjusted by controlling the output power of the radio frequency signal, to make the temperature value of the radio frequency operation object be within the temperature range. The limit value for temperature adjustment is less than the maximum injection flow rate of the injection pump, and can be preset according to actual needs in temperature control. The specific numerical is not limited here. The output power can be adjusted as follows. The voltage and current in the radio frequency circuit are detected, and multiplied to obtain an actual power. According to a preset power algorithm, a corresponding relationship between the adjustment amount of the output power and the adjustment amount of the actual power is calculated. Then the output power is adjusted, and in turn the actual power is accordingly adjusted, to achieve the purpose of temperature control.

Then the impedance value is adjusted. The impedance is adjusted merely by adjusting the injection flow rate of the injection pump. On the premise that the temperature value is maintained within the temperature range, the injection pump is further controlled to inject the cooling medium to the radio frequency operation object at a preset impedance adjustment-intended injection flow rate, to make the impedance value of the radio frequency operation object be within the preset second numerical range. The adjustment of the injection flow rate is the same as that in the adjustment of the temperature, and can be performed with reference to the descriptions above, which will not be repeated here.

The cooling medium injected by the injection pump to the radio frequency operation object is a temperature lowering liquid, for example, physiological saline.

Step S304: detecting, in real time, the temperature value or impedance value of the radio frequency operation object, when the data protection mode is the temperature-based uni-protection mode or the impedance-based uni-protection mode.

If the data protection mode is the temperature-based uni-protection mode, the temperature value of the radio frequency operation object is detected in real time.

If the data protection mode is the impedance-based uni-protection mode, the impedance value of the radio frequency operation object is detected in real time.

Step S305: adjusting the temperature value when the temperature value detected in real time exceeds the temperature range, to make the temperature value be within the temperature range; and adjusting the impedance value when the impedance value detected in real time exceeds the impedance range, to make the impedance value be within the impedance range.

The specific adjustment ways are the same as the temperature and impedance adjustment methods in the temperature- and impedance-based double protection mode. The temperature is adjusted first by adjusting the injection flow rate of the injection pump. When the injection flow rate reaches a limit value for temperature adjustment, the injection flow rate is no longer adjusted; instead, the temperature is further adjusted by adjusting the output frequency of the radio frequency signal, until the temperature value fall within the temperature range.

The impedance is adjusted merely by adjusting the injection flow rate of the injection pump. On the premise that the temperature value is maintained within the temperature range, the injection flow rate of the injection pump is further adjusted, to make the impedance value be within the impedance range.

Other technical details of various steps above can be found in the descriptions of the embodiment shown in FIG. 2, and will not be repeated here again.

In the embodiment of the present disclosure, the data protection mode of the radio frequency operation object includes the temperature-based uni-protection mode, the impedance-based uni-protection mode and the temperature- and impedance-based dual-protection mode. Multiple protection modes are provided to improve the flexibility of protection. Corresponding to the data protection modes, the temperature, the impedance, or the temperature and impedance of the radio frequency operation object are detected in real time. In the temperature- and impedance-based dual-protection mode, the temperature is adjusted first, such that the temperature value is adjusted to be within the preset temperature range; and then the impedance is adjusted, such that the impedance value is adjusted to be within the preset impedance range. In the temperature-based uni-protection mode, the temperature value is adjusted to be within the preset temperature range. In the impedance-based uni-protection mode, the impedance value is adjusted to be within the preset impedance range. By the adjustment of the temperature and impedance of the radio frequency operation object, multi-level and sequential adjustment is achieved. As a result, the flexibility of adjustment is increased, the success rate of the radio frequency operation is improved, and equipment damages and personal injuries caused by data abnormality in the radio frequency operation are avoided, thereby improving the safety of the radio frequency operation.

FIG. 4 is a structural schematic diagram of a radio frequency host provided in an embodiment of the present disclosure. For convenience of description, only the parts relevant to the embodiments of the present disclosure are shown. The radio frequency host is a radio frequency host shown in FIGS. 1-3 above. The radio frequency host includes:

- a determination module 401, configured to determine a data protection mode of a radio frequency operation object, wherein the data protection mode includes a uni-protection mode and a dual-protection mode;
- a detection module 402, configured to detect, in real time, first physical characteristic data and second physical characteristic data of the radio frequency operation object corresponding to the dual-protection mode, when the data protection mode is the dual-protection mode; and
- an adjustment module 403, configured to adjust the value of the first physical characteristic data and the value of the second physical characteristic data respectively according to the priorities of protection against the first physical characteristic data and the second physical characteristic data, when the value of the first physical characteristic data and the value of the second physical characteristic data exceed their respective preset numerical ranges, to make the value of the first physical characteristic data and the value of the second physical characteristic data be both within their respective preset numerical ranges.

When the data protection mode of the radio frequency operation object is the dual-protection mode, the first physical characteristic data and the second physical characteristic data of the radio frequency operation object corresponding to the dual-protection mode are detected in real time. When the value of the first physical characteristic data and the value of the second physical characteristic data are respectively beyond their respective preset numerical ranges, the value of the first physical characteristic data and the value of the second physical characteristic data are adjusted respectively according to the priorities of protection against the first physical characteristic data and the second physical characteristic data, to make the value of the first physical characteristic data and the value of the second physical characteristic data be both within their respective preset numerical ranges. Through the dual adjustment of two physical characteristic data of the radio frequency operation object in sequence, the success rate of the radio frequency operation is improved, and equipment damages and personal injuries caused by data abnormality in the radio frequency operation are avoided, thereby improving the safety of the radio frequency operation.