Ablation system and device for automatically measuring needle pitch parallelism of ablation needle

Abstract

The invention is suitable for the field of intelligent medical treatment of medical instruments, and provides an ablation system and device for automatically measuring the needle pitch parallelism of an ablation needle. In the embodiment, a laser sending module and a laser receiving module which are used for measuring the distance are integrated on each ablation needle handle in advance, after a first target ablation needle to be measured and a second target ablation needle to be measured are determined, a laser pulse signal is sent through the first target ablation needle, and then the laser pulse signal is received through the laser receiving module of the second target ablation needle; determining at least two distance values between the first target ablation needle and the second target ablation needle according to the transmission time difference of the laser pulse signals; finally, the parallelism of the first target ablation needle and the second target ablation needle is determined through the difference value of the distance values. The problems that manual measurement of the needle pitch of the ablation needle and the needle pitch parallelism of the ablation needle is low in efficiency and tedious in process are solved.

Description

Technical Field

[0001] The present application relates to the field of smart medical treatment of medical devices, and in particular to an ablation system and device for automatically measuring the parallelism of ablation needle distances. Background Art

[0002] High-voltage electric pulses have the unique advantage of preserving vascular and nerve functions in tumor ablation applications in the medical field, and their application is becoming more and more popular. The disposable steep pulse ablation needle, which is the application part of the high-voltage pulse generator, requires the use of a combination of at least two needles and at most six needles, and the distance between the needles is required to be within a certain range and the needles must remain basically parallel.

[0003] At present, the distance between ablation needles is measured manually under CT or ultrasound images. The measurement process is inconvenient and time-consuming. Multiple CT measurements will also increase the radiation dose. In particular, repeated measurements are required when the needle position is repeatedly adjusted. In addition, multiple point measurements are required to confirm whether the ablation needles are parallel. If they are not parallel, repeated measurements are required after adjusting the needle distance, which is time-consuming, labor-intensive, and inefficient. Summary of the invention

[0004] In view of this, the present application provides an ablation system and device for automatically measuring the parallelism of ablation needle distance, so as to solve the problems of low efficiency and cumbersome process of manually measuring the ablation needle distance and the parallelism of ablation needle distance during ablation surgery.

[0005] In a first aspect, the present application provides an ablation system for automatically measuring the parallelism of ablation needle distances, the system comprising a control module, a display module, a distance measurement module and an ablation needle module;

[0006] The ablation needle module comprises at least two ablation needles and corresponding ablation needle handles, and the ablation needle handles are integrated with the laser transmitting module and the laser receiving module of the distance measuring module, wherein the laser transmitting module comprises N laser transmitting sensors for transmitting laser pulse signals, and the laser receiving module comprises N laser receiving sensors for receiving laser pulse signals, where N>1;

[0007] The distance measurement module includes a laser sending module and a laser receiving module, which are used to determine the target ablation needle to be measured according to the measurement instruction sent by the control module, control the first target ablation needle to send M groups of laser pulse signals through the laser sending module, and control the second target ablation needle to receive the laser pulse signals through the laser receiving module, wherein M>1;

[0008] Determine a transmission time difference of the laser pulse signal, and determine M distance values ​​between the first target ablation needle and the second target ablation needle according to the transmission time difference;

[0009] The display module is used to display various status information and processing results during the measurement process, and provide various options that the user needs to select in the operation process, and perform corresponding processing according to the user's selection;

[0010] The control module includes a processor for logic and algorithm control and an interface provided for other modules, sends a measurement instruction to the distance measurement module, and determines the parallelism of the first target ablation needle and the second target ablation needle according to the distance value returned by the distance measurement module, wherein the measurement instruction includes the ablation needle number.

[0011] Optionally, the system further comprises a pin identity encoding and decoding module;

[0012] The needle identity encoding and decoding module is used to integrate the software and hardware codes and circuits required for encoding and decoding through an ASIC chip, so that the needle identity encoding and decoding module and the control module can identify the unique code of the ablation needle through a predetermined algorithm protocol, and record, identify and judge the information of the ablation needle through the unique code.

[0013] Optionally, the system further comprises a load module;

[0014] The load module includes a plurality of load resistors with different resistance values, and the load resistors form a resistor array to simulate the impedance level of various tissues of the human body;

[0015] The distance measurement module generates measurement data at each impedance level to determine the needle distance and parallelism of the ablation needle at each impedance level.

[0016] Optionally, the system further includes a system power supply module;

[0017] The system power supply module includes a line power supply system interface circuit, a safety protection circuit, a rectifier circuit, an EMC / EMI filtering protection circuit, and provides various types of power to other modules.

[0018] Optionally, providing an interactive interface and a driving control circuit to other modules includes:

[0019] Providing a communication interface and a power supply interface to the display module;

[0020] Providing the distance measurement module with a distance measurement sensor communication transceiver interface and a drive circuit;

[0021] The ablation needle module is provided with an ablation needle identification interface, a drive control circuit for the ablation needle, and a coding and decoding protocol and algorithm.

[0022] A second aspect of the present application provides an ablation device for automatically measuring the parallelism of ablation needle distances, the device comprising:

[0023] An ablation needle unit, comprising at least two ablation needles and corresponding ablation needle handles, wherein the ablation needle handles are integrated with a laser transmitting module and a laser receiving module of the distance measuring module, wherein the laser transmitting module comprises N laser transmitting sensors for transmitting laser pulse signals, and the laser receiving module comprises N laser receiving sensors for receiving laser pulse signals, where N>1;

[0024] A laser pulse signal sending and receiving unit, used to determine the target ablation needle to be measured according to the measurement instruction sent by the control module, control the first target ablation needle to send M groups of laser pulse signals through the laser sending module, and control the second target ablation needle to receive the laser pulse signals through the laser receiving module, wherein M>1;

[0025] Determine a transmission time difference of the laser pulse signal, and determine M distance values ​​between the first target ablation needle and the second target ablation needle according to the transmission time difference;

[0026] The needle distance and parallelism determination unit is used to send a measurement instruction to the distance measurement module, and determine the needle distance and parallelism of the ablation needle according to the distance value returned by the distance measurement module, wherein the measurement instruction includes the ablation needle number.

[0027] Optionally, the device further comprises:

[0028] The ablation needle identification and judgment unit is used to integrate the software and hardware codes and circuits required for encoding and decoding through an ASIC chip, so that the needle identity encoding and decoding module and the control module can identify the unique code of the ablation needle through a predetermined algorithm protocol, and record, identify and judge the information of the ablation needle through the unique code.

[0029] Optionally, the device further comprises:

[0030] A load unit, which is used for forming a resistance array with a plurality of load resistors of different resistance values, and simulating the impedance level of various tissues of the human body according to the resistance array;

[0031] The distance measurement module generates measurement data at each impedance level to determine the needle distance and parallelism of the ablation needle at each impedance level.

[0032] Optionally, the system further includes:

[0033] The power supply unit is used to provide various types of power to other modules.

[0034] In the embodiment provided in the present application, a laser sending module and a laser receiving module for measuring distance are pre-integrated on each ablation needle handle. After the first and second target ablation needles to be measured are determined, a laser pulse signal is sent through the first target ablation needle, and then the laser receiving module of the second target ablation needle receives the laser pulse signal. Then, at least two distance values ​​of the first target ablation needle and the second target ablation needle are determined by the transmission time difference of the laser pulse signal; finally, the parallelism of the first and second target ablation needles is determined by the difference in distance values. This solves the problem of low efficiency and cumbersome process of manually measuring the distance and parallelism of ablation needles, greatly improves the efficiency of measuring the distance after needle insertion and confirming the parallelism between ablation needles, can save the surgeon's time and energy, and enable the doctor to focus more on how to arrange and insert needles. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A system module diagram provided for an embodiment of the present application;

[0036] Figure 2 A diagram of the ablation needle layout provided in an embodiment of the present application;

[0037] Figure 3 Another ablation needle layout diagram provided for an embodiment of the present application;

[0038] Figure 4 A structural diagram of a device provided in an embodiment of the present application;

[0039] Figure 5 A schematic diagram of the internal structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0041] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0042] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0043] The present application provides an ablation system for automatically measuring the parallelism of ablation needle distances, so as to solve the problems of low efficiency and cumbersome process of manually measuring ablation needle distances and ablation needle distance parallelism during ablation surgery.

[0044] The technical solution of the present application is described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0045] like Figure 1 As shown, it is a module diagram of an ablation system for automatically measuring the parallelism of ablation needle distance provided by the present application. The system includes a control module, a display module, a distance measurement module and an ablation needle module.

[0046] The functions of each module are described below:

[0047] 1. Ablation needle module. This module includes at least two ablation needles and corresponding ablation needle handles, on which the laser transmitting module and laser receiving module of the distance measurement module are integrated, wherein the laser transmitting module includes N laser transmitting sensors for transmitting laser pulse signals, and the laser receiving module includes N laser receiving sensors for receiving laser pulse signals, where N>1.

[0048] Since this solution needs to solve the problem of parallel needles and measure the needle distance and parallelism between the ablation needles, this module requires at least two ablation needles. The handle of each ablation needle is integrated with a laser sending module and a laser receiving module of the distance measurement module to determine the distance between the two ablation needles by sending and receiving laser pulse signals.

[0049] 2. Distance measurement module. This module includes a laser sending module and a laser receiving module, which are used to determine the target ablation needle to be measured according to the measurement instruction sent by the control module, control the first target ablation needle to send M groups of laser pulse signals through the laser sending module, and control the second target ablation needle to receive the laser pulse signals through the laser receiving module, where M>1;

[0050] The transmission time difference of the laser pulse signal is determined, and M distance values ​​between the first target ablation needle and the second target ablation needle are determined according to the transmission time difference.

[0051] In this embodiment, a micro high-precision laser distance measuring sensor can be installed on the laser transmitting module and the laser receiving module. The control circuit adopts a dedicated ASIC design, and the customized function is integrated on a tiny crystal. After the solder pins are tied with gold wires, the crystal of the chip is sealed with glue to reduce its volume. Finally, the sealed crystal is integrated on the ablation needle handle. The measurement distance can be set to 5mm to 40mm, and the measurement accuracy is ±1mm.

[0052] When performing an ablation operation, the control module determines several target ablation needles for the ablation operation. Taking two ablation needles 1 and 2 as an example, after the control module sends their numbers to this module, this module selects one of the ablation needles with the same number, such as 1. The two laser emitting sensors on the ablation needle send two groups of laser pulse signals, and then the two laser receiving sensors on the ablation needle 2 receive the two groups of laser pulse signals respectively. The transmission time difference t1 and t2 of the laser pulse signal is calculated, and the two distance values ​​L1=c*t1 and L2=c*t2 between the ablation needles 1 and 2 can be determined by the time difference, where c is the speed of light, as Figure 2 After determining the two distance values, they are sent to the control module.

[0053] 3. Control module. This module includes a processor for logic and algorithm control and an interface provided for other modules. It sends a measurement instruction to the distance measurement module and determines the parallelism of the first target ablation needle and the second target ablation needle according to the distance value returned by the distance measurement module, wherein the measurement instruction includes the ablation needle number.

[0054] This module consists of a main control board and corresponding peripheral circuits and control software, including a processor for logic and algorithm control. It also includes a communication interface and a power supply interface for the display module; a distance measurement sensor communication transceiver interface for the distance measurement module; a single-channel or multi-channel ablation needle identification interface, selection control, identification encoding and decoding protocols and algorithms for the ablation needle module and the needle identification encoding and decoding module; a control drive circuit and a communication interface for the power module. The interfaces provided for the display module include common interfaces such as universal serial port COM, RS232, RS485 port or optical fiber isolation communication port, and interface information that needs to be displayed or input, and the power supply provided is 12VDC or 24VDC; the communication control port provided for the distance measurement module includes a 485 communication port or an IIC interface or an optical fiber communication interface and a corresponding drive circuit.

[0055] In this embodiment, the method for determining the parallelism through the distance value is as follows:

[0056] like Figure 3 As shown, L0 is determined according to the length of the ablation needle handle. The length of the ablation needle handle is proportional to the calculation accuracy of the parallelism. The inclination angle θ between the two target ablation needles is determined by the formula tanθ=(L1-L2) / L0. The inclination angle characterizes the parallelism between the two target ablation needles. When the inclination angle θ is less than the set threshold, it is determined that the two target ablation needles meet the parallelism requirement and the ablation surgery can be performed. When the inclination angle θ is greater than the set threshold, the target ablation needle needs to be adjusted.

[0057] 4. Display module: This module is used to display various status information and processing results during the measurement process, provide various options that the user needs to select in the operation process, and perform corresponding processing according to the user's selection.

[0058] This module can be composed of a touch screen or a non-touch screen plus a mouse plus a keyboard. Its display information includes the selection and display of the workflow or status during the operation of the device, the identification and display of the ablation needle, the display of the connection status and connection time of the ablation needle, the display of the distance of the connected ablation needle and the display of parallelism.

[0059] The workflow during operation displays the flowchart and step selection or confirmation of the test verification. The working status of the equipment is displayed but not limited to whether it is abnormal, abnormal indicators and corresponding processing prompt information; the recommended value of the electric field strength (voltage-to-needle distance ratio) is displayed, the needle distance of the ablation needle and whether it is within the normal needle distance range, the needle distance value of at least 2 points between the ablation needles and the judgment conclusion of parallelism are displayed. According to the actual installation quantity and serial number of 500 high-voltage pulse ablation needles, some of them are selected for needle distance test and parallelism confirmation or all tests are selected. The selected quantity, serial number and the actual number and module of installed ablation needles cannot conflict. Only the serial number and quantity of the actually installed ablation needles can be selected for testing. The test system divides the test results into multiple categories of errors or prompts, such as needle distance compliance display, needle distance exceeding alarm and prompt, parallelism compliance display, parallelism exceeding prompt or buzzer warning prompt, and displays green, yellow or red font flashing according to the corresponding status or error level.

[0060] So far, completed Figure 1 Description of the system modules shown.

[0061] In the above embodiment, a laser sending module and a laser receiving module for measuring distance are pre-integrated on each ablation needle handle. After the first and second target ablation needles to be measured are determined, a laser pulse signal is sent through the first target ablation needle, and then the laser receiving module of the second target ablation needle receives the laser pulse signal. Then, at least two distance values ​​of the first target ablation needle and the second target ablation needle are determined by the transmission time difference of the laser pulse signal; finally, the parallelism of the first and second target ablation needles is determined by the difference in distance values. This solves the problem of low efficiency and cumbersome process of manually measuring the distance and parallelism of ablation needles, greatly improves the efficiency of measuring the distance after needle insertion and confirming the parallelism between ablation needles, can save the surgeon's time and energy, and enable the doctor to focus more on how to arrange and insert needles.

[0062] In another embodiment, the system further comprises a pin identity encoding and decoding module;

[0063] The needle identity encoding and decoding module is used to integrate the software and hardware codes and circuits required for encoding and decoding through an ASIC chip, so that the needle identity encoding and decoding module and the control module can identify the unique code of the ablation needle through a predetermined algorithm protocol, and record, identify and judge the information of the ablation needle through the unique code.

[0064] This module can record, identify and judge the working mode and working time of the ablation needle, realizing miniaturized and intelligent ablation needle.

[0065] In another embodiment, the system further comprises a load module;

[0066] The load module includes a plurality of load resistors with different resistance values, and the load resistors form a resistor array to simulate the impedance level of various tissues of the human body;

[0067] The distance measurement module generates measurement data at each impedance level to determine the needle distance and parallelism of the ablation needle at each impedance level.

[0068] In this embodiment, a resistor array can be formed by load resistors to simulate the impedance level of cell tissue fluid, normal living tissue, or living tissue with a tumor model, and the matching resistance range is 50Ω to 300Ω. By simulating the actual usage scenario for measurement, the system can make the measurement results of the ablation needle distance and parallelism more accurate.

[0069] In another embodiment, the system further comprises a system power module;

[0070] The system power supply module includes a line power supply system interface circuit, a safety protection circuit, a rectifier circuit, an EMC / EMI filtering protection circuit, and provides various types of power to other modules.

[0071] In this embodiment, the power module includes a line power supply system interface circuit, a safety protection circuit, a rectifier circuit, an EMC / EMI filter protection circuit, and also includes a 5VDC, 3.3VDC and 1.2VDC regulated DC power supply for providing voltage power supply to the control module; it also includes a 12VDC or 24VDC single-channel DC power supply for the display module; it also includes a 3VDC or 5VDC power supply for the distance measurement module and the pin identity encoding and decoding module. Among them, the power supply provided to the control module is used to power the processor in the control module. The control module processor includes an MCU or FPGA or DSP power supply, and its power supply is 5VDC, 3.3VDC or 1.2VDC, and there are 5VDC and 3.3VDC power supplies for the indicator light or buzzer for prompt warning.

[0072] like Figure 4 As shown, the present application also provides an ablation device for automatically measuring the parallelism of ablation needle distance, the device comprising:

[0073] The ablation needle unit 401 comprises at least two ablation needles and corresponding ablation needle handles, wherein the ablation needle handles are integrated with the laser transmitting module and the laser receiving module of the distance measuring module, wherein the laser transmitting module comprises N laser transmitting sensors for transmitting laser pulse signals, and the laser receiving module comprises N laser receiving sensors for receiving laser pulse signals, where N>1;

[0074] The laser pulse signal sending and receiving unit 402 is used to determine the target ablation needle to be measured according to the measurement instruction sent by the control module, control the first target ablation needle to send M groups of laser pulse signals through the laser sending module, and control the second target ablation needle to receive the laser pulse signals through the laser receiving module, where M>1;

[0075] Determine a transmission time difference of the laser pulse signal, and determine M distance values ​​between the first target ablation needle and the second target ablation needle according to the transmission time difference;

[0076] The needle distance and parallelism determination unit 403 is used to send a measurement instruction to the distance measurement module, and determine the needle distance and parallelism of the ablation needle according to the distance value returned by the distance measurement module. The measurement instruction includes the ablation needle number.

[0077] In another embodiment, the apparatus further comprises:

[0078] The ablation needle identification and judgment unit 404 is used to integrate the software and hardware codes and circuits required for encoding and decoding through an ASIC chip, so that the needle identity encoding and decoding module and the control module can identify the unique code of the ablation needle through a predetermined algorithm protocol, and record, identify and judge the information of the ablation needle through the unique code.

[0079] In another embodiment, the apparatus further comprises:

[0080] The load unit 405 is used for forming a resistance array with a plurality of load resistors of different resistance values, and simulating the impedance level of each tissue of the human body according to the resistance array;

[0081] The distance measurement module generates measurement data at each impedance level to determine the needle distance and parallelism of the ablation needle at each impedance level.

[0082] In another embodiment, the system further comprises:

[0083] The power supply unit 406 is used to provide various types of power to other modules.

[0084] The above-mentioned embodiment of the present invention provides an ablation system for automatically measuring the parallelism of ablation needle distance, and based on the system provides an ablation device for automatically measuring the parallelism of ablation needle distance. Through the above-mentioned system and device, the problems of low efficiency and cumbersome process of manually measuring the ablation needle distance and the parallelism of ablation needle distance during ablation surgery are solved.

[0085] This embodiment also discloses a computer device, such as Figure 5 As shown, the computer device includes a processor and a memory, wherein the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the functions of any of the above-mentioned ablation systems for automatically measuring the parallelism of ablation needle distances.

[0086] In addition, in the above-mentioned embodiment of the ablation device for automatically measuring the parallelism of ablation needle distance, the logical division of each program module is only an example. In actual application, the above-mentioned functions can be assigned to different program modules as needed, for example, for the convenience of corresponding hardware configuration requirements or software implementation. That is, the internal structure of the ablation device for automatically measuring the parallelism of ablation needle distance is divided into different program modules to complete all or part of the functions described above.

[0087] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An ablation system for automatically measuring the parallelism of ablation needle distance, characterized in that: The system includes a control module, a display module, a distance measurement module and an ablation needle module; The ablation needle module comprises at least two ablation needles and corresponding ablation needle handles, and the ablation needle handles are integrated with the laser transmitting module and the laser receiving module of the distance measuring module, wherein the laser transmitting module comprises N laser transmitting sensors for transmitting laser pulse signals, and the laser receiving module comprises N laser receiving sensors for receiving laser pulse signals, where N>1; The distance measurement module includes a laser sending module and a laser receiving module, which are used to determine the target ablation needle to be measured according to the measurement instruction sent by the control module, control the first target ablation needle to send M groups of laser pulse signals through the laser sending module, and control the second target ablation needle to receive the laser pulse signals through the laser receiving module, wherein M>1; Determine a transmission time difference of the laser pulse signal, and determine M distance values ​​between the first target ablation needle and the second target ablation needle according to the transmission time difference; The display module is used to display various status information and processing results during the measurement process, and provide various options that the user needs to select in the operation process, and perform corresponding processing according to the user's selection; The control module includes a processor for logic and algorithm control and an interface provided for other modules, sends a measurement instruction to the distance measurement module, and determines the parallelism of the first target ablation needle and the second target ablation needle according to the distance value returned by the distance measurement module, wherein the measurement instruction includes the ablation needle number.

2. The system according to claim 1, characterized in that The system also includes a pin identity encoding and decoding module; The needle identity encoding and decoding module is used to integrate the software and hardware codes and circuits required for encoding and decoding through an ASIC chip, so that the needle identity encoding and decoding module and the control module can identify the unique code of the ablation needle through a predetermined algorithm protocol, and record, identify and judge the information of the ablation needle through the unique code.

3. The system according to claim 1, characterized in that The system also includes a load module; The load module includes a plurality of load resistors with different resistance values, and the load resistors form a resistor array to simulate the impedance level of various tissues of the human body; The distance measurement module generates measurement data at each impedance level to determine the needle distance and parallelism of the ablation needle at each impedance level.

4. The system according to claim 1, characterized in that The system also includes a system power supply module; The system power supply module includes a line power supply system interface circuit, a safety protection circuit, a rectifier circuit, an EMC / EMI filtering protection circuit, and provides various types of power to other modules.

5. The system according to claim 2, characterized in that The providing of interactive interfaces and driving control circuits to other modules includes: Providing a communication interface and a power supply interface to the display module; Providing the distance measurement module with a distance measurement sensor communication transceiver interface and a drive circuit; The ablation needle module is provided with an ablation needle identification interface, a drive control circuit for the ablation needle, and a coding and decoding protocol and algorithm.

6. An ablation device for automatically measuring the parallelism of ablation needle distance, characterized in that: The device comprises: An ablation needle unit, comprising at least two ablation needles and corresponding ablation needle handles, wherein the ablation needle handles are integrated with a laser transmitting module and a laser receiving module of the distance measuring module, wherein the laser transmitting module comprises N laser transmitting sensors for transmitting laser pulse signals, and the laser receiving module comprises N laser receiving sensors for receiving laser pulse signals, where N>1; A laser pulse signal sending and receiving unit, used to determine the target ablation needle to be measured according to the measurement instruction sent by the control module, control the first target ablation needle to send M groups of laser pulse signals through the laser sending module, and control the second target ablation needle to receive the laser pulse signals through the laser receiving module, wherein M>1; Determine a transmission time difference of the laser pulse signal, and determine M distance values ​​between the first target ablation needle and the second target ablation needle according to the transmission time difference; The needle distance and parallelism determination unit is used to send a measurement instruction to the distance measurement module, and determine the needle distance and parallelism of the ablation needle according to the distance value returned by the distance measurement module, wherein the measurement instruction includes the ablation needle number.

7. The device according to claim 6, characterized in that The device also includes: The ablation needle identification and judgment unit is used to integrate the software and hardware codes and circuits required for encoding and decoding through an ASIC chip, so that the needle identity encoding and decoding module and the control module can identify the unique code of the ablation needle through a predetermined algorithm protocol, and record, identify and judge the information of the ablation needle through the unique code.

8. The device according to claim 6, characterized in that The device also includes: A load unit, which is used for forming a resistance array with a plurality of load resistors of different resistance values, and simulating the impedance level of various tissues of the human body according to the resistance array; The distance measurement module generates measurement data at each impedance level to determine the needle distance and parallelism of the ablation needle at each impedance level.

9. The device according to claim 6, characterized in that The system further comprises: The power supply unit is used to provide various types of power to other modules.

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