Method and system for detecting cable connections

Abstract

A method for detecting whether an external wire is connected to an input terminal of an electrical system includes monitoring a signal associated with the input terminal, converting the analog signal to a digital signal, and processing the digital signal using a Fast Fourier Transform (FFT). The method further includes detecting whether an external cable is connected to the input terminal based on the spectral components derived from the FFT. The method may also include generating a notification if an external wire is detected and implementing a safety protocol that allows or prohibits power supply to one or more external components based on whether an external wire is detected. In one example, the electrical system may be part of a medical system, and the external wire may be configured to connect to a catheter.

Description

Technical Field

[0001] The present invention generally relates to an electrical system, and a method and system for detecting whether a conducting wire or cable is connected to an input terminal of the electrical system.

[0002] (Cross - reference to related applications) This application claims priority to U.S. Provisional Patent Application No. 63 / 462,374, filed on April 27, 2023. The disclosure of the same application is incorporated herein by reference in its entirety.

Background Art

[0003] In medical applications, a catheter is typically connected to an external system such as an amplifier system or a signal generator system. The external system can be used to analyze signals received from the catheter or send signals to the catheter. It may be important or beneficial to confirm whether the catheter is properly connected to the amplifier system. For example, it may be beneficial to know whether the catheter is connected to the external system during the initialization or startup of a signal generator (such as a high - voltage irreversible electroporation generator). Therefore, it is beneficial to provide a system / method for automatically detecting whether a catheter, or more generally the corresponding cable or conducting wire, is connected to the external system.

Summary of the Invention

[0004] According to one aspect, a method for detecting whether an external conducting wire is connected to an input terminal of an external medical system includes monitoring a signal related to an input terminal located on an external panel of the external medical system and configured to receive the external conducting wire, and analyzing spectral components of the monitored signal. The method may further include detecting whether the external conducting wire is connected to the input terminal based on the spectral components of the monitored signal.

[0005] In another embodiment, a method for operating an electrical system configured to supply power to one or more external components includes monitoring a signal associated with an input terminal located in an amplifier system of the electrical system, which is configured to be connected to an external wire; analyzing the spectral components of the monitored signal; and determining, based on the spectral components of the monitored signal, whether an external wire is connected to the input terminal. The method may further include generating a notification indicating whether an external wire is connected, and implementing a safety protocol if an external wire is connected.

[0006] In another embodiment, a system configured to supply power to one or more external components includes one or more input terminals formed on the external panel of the system, which are configured to accept external wires, and a data acquisition system configured to monitor and collect analog signals associated with one or more input terminals. The analog signals may be digitally processed in the data acquisition system to obtain spectral components of one or more input terminals. The system may further include a cable detection module configured to detect, based on the spectral components, whether external wires are connected to one or more input terminals. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic diagram of a medical system including an external electrical system configured to interact with a medical device and a display workstation, according to several embodiments.

[0008] [Figure 2] Figure 1 is a schematic diagram of an external electrical system having one or more input terminals configured to connect to a medical device, according to several embodiments.

[0009] [Figure 3] This is a schematic diagram showing details of the external electrical system in Figure 2, according to several embodiments.

[0010] [Figure 4A] This is a frequency plot showing the spectral components of a specific channel of an input terminal to which an external wire is connected.

[0011] [Figure 4B] This is a similar frequency plot to Figure 4A, but without any external wires connected to the same channel.

[0012] [Figure 5A] This is a frequency plot showing the spectral components of channels adjacent to the channels in Figures 4A and 4B that have wires connected, but to which wires are not connected.

[0013] [Figure 5B] This is a frequency plot of the same channel as Figure 5A, showing the spectral components when no wires are connected to the channels in Figures 4A and 4B.

[0014] [Figure 6] This flowchart shows the steps used to detect whether a cable is connected to the input terminal of an external electrical system. [Modes for carrying out the invention]

[0015] According to several embodiments, the present invention facilitates determining whether an external cable or wire is connected to an input terminal of an external system based on frequency analysis (e.g., spectral components) of a signal received at the input terminal. The spectral components (based on frequency domain analysis of the signal received at the input terminal) increase when a device or component is connected to the input terminal. This increase in spectral components occurs because a wire extending along the length of the device responds to external electromagnetic radiation. When the device is removed from the external system, the spectral components decrease. Thus, the change or difference in spectral components makes it possible to determine whether a device is connected to any one of the input terminals.

[0016] In some embodiments, the external system and its associated internal components are housed within a metal / conductive frame, which functions as a Faraday cage to prevent external electromagnetic radiation from generating spectral components or noise within the external system. In some embodiments, the signal received at the input terminal is analyzed using a Fast Fourier Transform (FFT) to convert the time-domain signal into a frequency-domain signal. One advantage of the present invention is that the FFT module does not significantly increase the cost of the external system, and such modules are often already included in the external system, thus providing a cable detection means at a relatively low cost.

[0017] The methods and systems disclosed herein can be used in a variety of electrical systems to detect whether an external wire or cable is connected to an electrical system, regardless of whether the connection can be visually confirmed. For example, in medical applications, it may be important to ensure that a catheter and the corresponding external cable or wire are not connected to an external system before activating the external system or performing a self-diagnosis of the external system. In other examples, it may be beneficial to confirm that a catheter or other component is connected to an external system. In yet another example, it may be beneficial for a user to be able to confirm that a foot pedal configured to operate a medical system is properly connected to the input terminal of the external system before being used by a technician / physician. In yet another example, the methods and systems can also be used in systems that monitor bodily signals. In some embodiments, the methods and systems can also be used to detect whether a cable that appears to be connected is actually properly connected and functioning correctly or effectively. In some embodiments, where a cable includes multiple wires connected to a single input terminal, the methods and systems can also be used to determine whether all wires are connected and functioning correctly and to identify any wires that are not functioning correctly.

[0018] Figure 1 is a schematic diagram of a medical system 100, which includes a stand 102 housing the components of the system 100, an electrical system 104, and a display 106. The system 100 also includes other components illustrated in Figure 1, but these are not described in detail herein. The system 100 may be configured for mapping, recording, localization, and ablation such as radio frequency (RF) ablation or irreversible electroporation (IRE) ablation.

[0019] In some embodiments, system 100 may be configured to perform one or more of the following treatments on the patient's heart: mapping, localization, and ablation. In some embodiments, the electrical system 104 may be an amplifier. A catheter (not shown) can be connected to the electrical system / amplifier 104 via a wire or cable, and the catheter can perform IRE treatment on cardiac tissue by applying a high voltage to the heart. The voltage is generated by a signal generator housed within the electrical system 104. It may be beneficial to initiate or perform a startup test of the signal generator before performing the ablation treatment. The methods and systems of this disclosure facilitate catheter detection based on frequency analysis.

[0020] The front panel 108 of the electrical system 104 may include one or more input terminals or ports 110 configured to receive external cables or wires that may be associated with the catheter. Other components of the electrical system are described further below with reference to Figures 2 and 3.

[0021] FIG. 2 is a schematic diagram of components inside the electrical system 104, and these internal components may include an analog-to-digital converter (ADC) 112, a digital signal processor (DSP) 114, an electronic control unit (ECU) 116, and a signal generator 118. In some embodiments, the ECU 116 includes a processor (e.g., an application-specific integrated circuit (ASIC), a microcontroller, a graphics processor, etc.) and a memory that stores instructions used by the processor to implement the functions and / or modules described herein. FIG. 2 shows three input terminals 110 (specifically, terminals 110A, 110B, 110C), and when a component is connected to any one of these input terminals 110, that component is electrically connected to the ADC 112 and the signal generator 118. Although FIG. 2 shows three input terminals 110, in other embodiments, the electrical system 104 may include more or fewer input terminals. The ADC 112 and the DSP 114 have both a data collection function and a data processing function, and together they may be referred to as a data collection system. The ECU 116 may have a cable detection function, as will be further described below with reference to FIG. 3.

[0022] Since the outside of the electrical system 104 is made of metal, the electrical system 104 functions as a Faraday cage to protect the components inside the system 104 (e.g., the ADC 112, the DSP 114, the ECU 116, and the signal generator 118). The electrical system 104 is connected to the display 106 (see FIG. 1) and can communicate with the display 106, so the display 106 can provide an output to the user of the system 100. This will be further described below with reference to FIGS. 3 and 6.

[0023] FIG. 3 is a schematic diagram of components within an electrical system 104 that is separate from and more detailed than the schematic diagram of FIG. 2. In FIG. 3, a conducting wire 120 is shown connected to one of the input terminals 110, specifically input terminal 110A. In some embodiments, as will be described later, each of the input terminals 110A, 110B, and 110C may correspond to a specific channel. In some embodiments, the conducting wire 120 may correspond to a device such as a catheter and may be connected to the device. In some embodiments, the catheter is connected to the front panel 108 via one conducting wire such as the conducting wire 120 in FIG. 3. In other embodiments, the catheter is connected to the front panel via a cable configured to accommodate a plurality of conducting wires corresponding to a plurality of receptacles formed in the input terminals.

[0024] In ADC 112, analog inputs collected at each of the input terminals 110 may be converted into digital signals. The digital signals may be processed by DSP 114 using a fast Fourier transform (FFT) to be converted from a time-domain signal to a frequency-domain signal. In some embodiments, ECU 116 determines whether a conducting wire is connected to the input terminal 110 using the frequency-domain signal calculated by DSP 114. As shown in FIGS. 4A - 5B, when a cable or conducting wire is connected to input terminal 110A, the spectral components related to the frequency-domain signal increase significantly compared to the FFT spectrum when no cable or conducting wire is connected to input terminal 110A. This difference in spectral components is due to the electromagnetic noise picked up by the cable or conducting wire when it is connected to input terminal 110A, and the frequency components increase compared to the case where no cable or conducting wire is connected to input terminal 110A.

[0025] Spectral outputs from the DSP 114 for each channel or each input terminal 110 may be transmitted to the ECU 116. The ECU 116 may include, along with other components, a cable detection module 122 and a safety module 124. In some embodiments, the cable detection module 122 and / or the safety module 124 are implemented by hardware (e.g., application-specific integrated circuits (ASICs)) or a combination of hardware and software (e.g., a processor that executes instructions stored in memory). The cable detection module 122 receives spectral outputs from the DSP 114 and may use these outputs to determine whether one or more of the input terminals 110A, 110B, and 110C are connected to a cable or conductor.

[0026] The cable detection module 122 may provide an output of "cable detected" or "cable not detected" for each of the input terminals 110A, 110B, and 110C. Specifically, the cable detection module 122 may determine whether a cable or conductor has been detected by referring to the amplitude measured at a specific frequency or a specific frequency range. In some embodiments, the output may be threshold amplitude based, and the output is "cable detected" if the measured amplitude is greater than a predetermined threshold. In some embodiments, the output is "cable detected" if the cumulative amplitude over a certain frequency range is greater than a predetermined threshold.

[0027] In some embodiments, the output "cable detected" or "cable not detected" may be transmitted to the display module 106 as a visual and / or audible notification. For example, the display 106 (see Figure 1) may emit an audible alarm when a cable is detected. In another example, the display 106 may emit a red visual signal on the display panel when a cable is detected.

[0028] In some embodiments, the output from the cable detection module 122 may be supplied to a safety module 124, which may be configured to allow or prohibit the operation of other components of the system 100 (e.g., the signal generator 118). For example, if a cable is detected, the safety module 124 may prevent the signal generator 118 from starting a startup test (thus preventing power from being supplied to the front panel 108). However, once the startup test is complete, the system 100 may be ready to send IRE pulses from the generator 118, for example, to perform an ablation treatment. In such a case, the safety module 124 may allow the operation of the signal generator 118 even if a cable is detected at input terminal 110A.

[0029] Figure 4A is a frequency plot showing the spectral components of the first channel (see input 110A in Figure 3) when the wire 120 is connected to input terminal 110A. Similarly, Figure 4B shows the frequency plot of the first channel when the wire 120 is not connected to input terminal 110A. As shown in Figure 4A, the noise (i.e., amplitude) measurable from the wire 120 is detected in the frequency range of 0 to 1000 Hz, particularly in the frequency range of 0 to approximately 600 Hz. In contrast, Figure 4B shows that when the wire 120 is not connected, the amplitude measured in the range of 0 to 1000 Hz is minimal. Thus, by comparing Figures 4A and 4B, the connected wire 120 can be easily detected based on the spectral components derived from the FFT signal.

[0030] Figure 5A shows a similar frequency plot for the channels adjacent to the first channel (see inputs 110B and 110C in Figure 3) when the wire 120 is connected to input terminal 110A. Figure 5B shows the frequency plot for the adjacent channels when the wire 120 is not connected to input terminal 110A. The difference in measured noise between Figure 5A and Figure 5B is not as significant as the difference between Figure 4A and Figure 4B, but given the interaction between adjacent channels, there is still a noteworthy difference in the measured amplitude between Figure 5A and Figure 5B. When the wire is connected to the first input terminal 110A, adjacent channels may detect the connection, albeit at a low level. This indicates that not only the spectral components of the first channel 110A but also the spectral components of the adjacent channels can be observed.

[0031] Therefore, if a conductor is detected at input terminal 110A based on the spectral components of the first channel, the spectral components of the first channel 110A can be confirmed using the adjacent channel, and the spectral components should increase in the adjacent channel as well. Furthermore, by utilizing the adjacent channel, it is possible to determine whether there is a problem with the conductor 120 at input terminal 110A, even if the connection status is not clear from the spectral components of the first channel. For example, if there is a problem with the conductor 120 at input terminal 110A, the spectral components of the first channel 110A will be very low. In that case, evaluating the spectral components of the adjacent channel can help determine whether a conductor is actually connected to input terminal 110A. Similarly, if the conductor 120 is connected to input terminal 110A, but the subsequent stage of the first channel is damaged, there may be no spectral output from the first channel even if the conductor 120 is connected. In other words, there is an interaction between channel 110A and channels 110B and 110C, and if a wire is connected to channel 110A, channel 110A will interact with channels 110B and 110C, which may cause an increase in the spectral components of those channels as well.

[0032] In the example above, each input terminal in Figure 3 corresponds to one wire. In this case, each input terminal corresponds to one channel. In other examples, an input terminal on an electrical system panel may be configured to accept multiple wires. Each wire may have a corresponding receiving part at the input terminal. That is, the input terminal has multiple receiving parts for accepting multiple wires. Since each wire corresponds to one channel, in such an example, multiple channels will correspond to one input terminal.

[0033] In this specification, the terms cable and wire are used interchangeably when describing detection at input terminals (i.e., wire detection, cable detection). In some embodiments, a wire may refer to a single wire connected to the device, while a cable may refer to a housing that accommodates multiple wires connected to the device, with the multiple wires housed within the cable. As an example, a catheter having multiple electrodes at one end may have a cable connected to the opposite end of the catheter, which may contain multiple wires, each corresponding to a specific electrode.

[0034] Figure 6 is a flowchart showing the steps of Method 600 used to detect whether a wire or cable is connected to an input terminal of an electrical system. In some embodiments, the electrical system is used in conjunction with a medical device such as a catheter. The external electrical system may be used to collect and analyze data from the medical device and / or to deliver treatments such as ablation therapy to the medical device. Method 600 includes, in step 602, monitoring a signal associated with an input terminal on the input panel of the electrical system. The monitored signal may be an analog signal. In some embodiments, the analog signal is converted to a digital signal using an analog-to-digital converter (ADC), and the digital signal is fed to downstream processing. In step 604, the digital signal is converted to a frequency-domain signal using a DSP and FFT. In step 606, the frequency-domain signal is used to determine or detect whether an external wire or cable is connected to the input terminal. The frequency-domain signal includes a spectral output that is analyzed to determine whether a wire or cable is connected. Such analysis may be based, for example, on amplitude measured at a specific frequency or within a certain frequency range. In some embodiments, since digital signal processing and FFT analysis are already used to operate electrical systems, Method 600 can utilize existing hardware / software components and functions to determine whether a wire or cable is connected.

[0035] In step 608, a notification protocol may be generated to communicate the result of step 606 regarding whether or not a cable has been detected. The notification protocol may include an audible notification and / or a visual notification. Step 608 may also include implementing a safety protocol based on the result of step 606. In some embodiments, the safety protocol may include prohibiting the operation of other components of the entire system as long as a cable or conductor is detected. In some embodiments, the safety protocol may include initiating the operation of other components of the entire system if a cable or conductor is detected.

[0036] In devices in which multiple wires are connected via a cable, the methods and systems of this disclosure may be used to detect whether those wires are functioning correctly. For example, a catheter configured for use with a signal generator may include multiple electrodes, each electrode having a corresponding wire. A corresponding input terminal in the signal generator or electrical system may have multiple receptacles, each receptacle corresponding to a specific wire connected to the catheter. By analyzing the spectral components of each wire, it is possible to determine whether the wire is properly connected and / or whether the electrode corresponding to that wire is functioning correctly. Since each wire (and its corresponding electrode) is associated with a channel in the electrical system, the signals collected in each channel are processed as described above to obtain spectral components. By analyzing the spectral components of each channel, it is possible to determine whether each wire is properly connected and / or whether the electrode corresponding to each wire is functioning correctly. For example, if the catheter is powered and a specific amplitude is not observed at a specific frequency for all channels, it is possible that the wires of the catheter cable are not properly connected to the input terminal or that the electrodes themselves are not functioning correctly.

[0037] While the present invention has been described with reference to exemplary embodiments, those skilled in the art will understand that various modifications can be made and elements of the embodiments replaced with equivalents without departing from the scope of the invention. Furthermore, many modifications can be made without departing from the essential scope of the invention to adapt the teachings of the invention to specific situations or materials. Accordingly, the present invention is not limited to the specific embodiments disclosed, but includes all embodiments contained in the appended claims.

[0038] (Consideration of possible embodiments) The following is a non-limiting description of possible embodiments of the present invention.

[0039] According to one embodiment, a method for detecting whether an external wire is connected to an input terminal in an external medical system includes monitoring a signal associated with an input terminal located on the external panel of the external medical system and configured to accept an external wire, and analyzing the spectral components of the monitored signal. The method further includes detecting whether an external wire is connected to the input terminal based on the spectral components of the monitored signal.

[0040] The methods described in the preceding paragraph may optionally include, additionally and / or alternatively, one or more of the following features, steps, configurations, and / or additional components:

[0041] In some embodiments, the signal associated with the input terminal is a time-domain signal, and the method may further include converting the time-domain signal to a frequency-domain signal using a Fast Fourier Transform (FFT).

[0042] In some embodiments, detecting whether an external wire is connected to an input terminal is performed based on spectral components derived from the FFT.

[0043] In some embodiments, it is determined that an external wire is connected if the measured amplitude of the frequency domain signal exceeds a predetermined amplitude threshold.

[0044] In some embodiments, it is determined that no external wire is connected if the measured amplitude of the frequency domain signal is smaller than a predetermined amplitude threshold.

[0045] In some embodiments, the external conductor is housed within a cable that also contains other conductors.

[0046] In some embodiments, the external wires are connected to a device configured to be powered by an external medical system.

[0047] In some embodiments, the external wire is part of the catheter.

[0048] In another embodiment, a method for operating an electrical system configured to supply power to one or more external components includes monitoring a signal associated with an input terminal located in an amplifier system of the electrical system, which is configured to be connected to an external wire; analyzing the spectral components of the monitored signal; and determining, based on the spectral components of the monitored signal, whether an external wire is connected to the input terminal. The method further includes generating a notification indicating whether an external wire is connected, and, if an external wire is connected, implementing a safety protocol.

[0049] The methods described in the preceding paragraph may optionally include, additionally and / or alternatively, one or more of the following features, steps, configurations, and / or additional components:

[0050] In some embodiments, the method further includes converting the monitored signal into a digital signal before analyzing its spectral components, and processing the digital signal using an FFT.

[0051] In some embodiments, it is determined that an external wire is connected if the measured amplitude exceeds a predetermined amplitude threshold.

[0052] In some embodiments, it is determined that an external wire is not connected if the measured amplitude is smaller than a predetermined amplitude threshold.

[0053] In some embodiments, implementing a safety protocol includes prohibiting power from being supplied from signal generators in the electrical system.

[0054] In some embodiments, generating a notification that an external wire is connected includes providing at least one of a visual output and an audio output.

[0055] In another embodiment, a system configured to supply power to one or more external components includes one or more input terminals formed on the external panel of the system, which are configured to accept external wires, and a data acquisition system configured to monitor and collect analog signals associated with one or more input terminals, wherein the analog signals are subjected to digital signal processing in the data acquisition system to obtain spectral components of one or more input terminals. The system further includes a cable detection module configured to detect, based on the spectral components, whether external wires are connected to one or more input terminals.

[0056] The system described in the preceding paragraph may optionally include, additionally and / or alternatively, one or more of the following features, steps, configurations, and / or additional components:

[0057] In some embodiments, the system further includes a safety module configured to allow or deny power supply to one or more external components based on whether a cable detection module has detected an external conductor.

[0058] In some embodiments, one or more external components include a catheter connectable to one or more input terminals, and the system further comprises a signal generator configured to apply drive signals to one or more electrodes of the catheter.

[0059] In some embodiments, if no external wires are detected, the safety module initiates a self-diagnosis of the signal generator.

[0060] In some embodiments, the catheter can be connected to one or more input terminals via a cable, the cable containing multiple conductors, each corresponding to an electrode on the catheter.

[0061] In some embodiments, the cable detection module provides an output indicating whether an external conductor has been detected, and the output includes at least one of a visual output and an audio output.

Claims

1. A method for detecting whether an external wire is connected to an input terminal in an external medical system, wherein the method is: The input terminal located on the external panel of the external medical system, which is configured to accept an external wire, is used to monitor signals associated with the input terminal. Analyzing the spectral components of the monitored signal, The system includes detecting whether the external wire is connected to the input terminal based on the spectral components of the monitored signal, method.

2. The signal associated with the input terminal is a time-domain signal, The method according to claim 1, further comprising converting the time-domain signal into a frequency-domain signal using a fast Fourier transform (FFT).

3. The method according to claim 2, wherein detection of whether the external conductor is connected to the input terminal is performed based on spectral components derived from the FFT.

4. The method according to claim 3, wherein it is determined that the external conductor is connected when the measured amplitude of the frequency domain signal exceeds a predetermined amplitude threshold.

5. The method according to claim 3, wherein it is determined that the external conductor is not connected when the measured amplitude of the frequency domain signal is smaller than a predetermined amplitude threshold.

6. The method according to any one of claims 1 to 5, wherein the external conductor is housed within a cable that includes other conductors.

7. The method according to any one of claims 1 to 6, wherein the external conductor is connected to a device configured to be powered by the external medical system.

8. The method according to any one of claims 1 to 7, wherein the external conductor is part of the catheter.

9. A method for operating an electrical system configured to supply power to one or more external components, wherein the method is: The input terminal located in the amplifier system of the aforementioned electrical system, configured to be connected to an external wire, is to monitor the signal associated with the input terminal, Analyzing the spectral components of the monitored signal, Based on the spectral components of the monitored signal, it is determined whether the external wire is connected to the input terminal, The system includes at least one of the following: generating a notification indicating whether the external wire is connected, and implementing a security protocol if the external wire is connected. method.

10. Before analyzing the spectral components, the monitored signal is converted into a digital signal, The method according to claim 9, further comprising processing the digital signal using an FFT.

11. The method according to claim 9 or 10, wherein it is determined that the external conductor is connected when the measured amplitude exceeds a predetermined amplitude threshold.

12. The method according to any one of claims 9 to 11, wherein it is determined that the external conductor is not connected when the measured amplitude is smaller than a predetermined amplitude threshold.

13. The method according to any one of claims 9 to 12, wherein implementing a safety protocol includes prohibiting power from being supplied from the signal generator of the electrical system.

14. The method according to any one of claims 9 to 13, comprising generating a notification that the external wire is connected, which includes providing at least one of a visual output and an audio output.

15. A system configured to supply power to one or more external components, wherein the system is One or more input terminals formed on the external panel of the system, the one or more input terminals configured to receive external wires, A data acquisition system configured to monitor and collect analog signals associated with one or more input terminals, wherein the analog signals undergo digital signal processing in the data acquisition system to obtain spectral components of the one or more input terminals. The system includes a cable detection module configured to detect whether the external conductor is connected to one or more input terminals based on the spectral components, system.

16. The system according to claim 15, further comprising a safety module configured to allow or prohibit the supply of power to one or more external components based on whether the cable detection module has detected the external conductor.

17. The one or more external components include a catheter that can be connected to the one or more input terminals. The system according to claim 16, further comprising a signal generator configured to apply a drive signal to one or more electrodes of the catheter.

18. The system according to claim 17, wherein if the external conductor is not detected, the safety module starts a self-diagnosis of the signal generator.

19. The catheter can be connected to one or more input terminals via a cable. The aforementioned cable includes multiple conductors, The system according to claim 17, wherein each of the aforementioned conductors corresponds to an electrode of the catheter.

20. The cable detection module provides an output indicating whether the external conductor has been detected. The system according to any one of claims 15 to 19, wherein the output includes at least one of a visual output and an audio output.

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