Electrophysiology medical device

Abstract

An electrophysiological medical device includes a catheter, a magnetic positioning system, and a processing unit. The catheter is inserted into the human body. The magnetic positioning system includes a magnetic field generator and a magnetic sensor. The magnetic field generator generates a magnetic field, and the magnetic sensor moves with the catheter to detect first magnetic field information indicating the catheter's position within the body. The processing unit acquires the first magnetic field information from the magnetic positioning system and generates the catheter's original position information based on this information. The processing unit also acquires relevant information from a digital subtraction angiography (DSA) device that causes magnetic interference to the magnetic positioning system, corrects the catheter's original position information based on this information, and obtains and outputs the corrected position information of the catheter. This electrophysiological medical device can specifically address the impact of DSA equipment on the positioning accuracy of the magnetic positioning system, thereby improving positioning accuracy, avoiding the impact of low positioning accuracy on diagnosis and operation, and ultimately improving medical outcomes.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically to an electrophysiological medical device. Background Technology

[0002] Existing electrophysiological medical devices employing magnetic positioning systems, such as those using magnetic positioning to locate catheters inserted into the body (e.g., electrophysiological three-dimensional mapping systems), typically require high-precision positioning. However, while magnetic positioning offers high accuracy, it is susceptible to interference from metallic substances, leading to a decrease in precision. The environment of electrophysiological medical devices using this positioning method (e.g., catheterization labs during electrophysiological surgery) contains numerous metallic substances, such as digital subtraction angiography (DSA) equipment, lead doors, and interference from other medical devices, particularly DSA. Currently, manufacturers of such electrophysiological medical devices have not implemented specific measures to address the precision interference caused by DSA. This interference affects the operator's diagnosis and procedure, resulting in prolonged surgery time and reduced treatment effectiveness. Summary of the Invention

[0003] To address the aforementioned problems, according to one aspect of this application, an electrophysiological medical device is provided, comprising a catheter, a magnetic positioning system, and a processing unit, wherein: the catheter is used for insertion into the human body; the magnetic positioning system includes a magnetic field generator and a magnetic sensor, the magnetic field generator being used to generate a magnetic field, and the magnetic sensor following the movement of the catheter to detect first magnetic field information of the catheter's position within the human body; the processing unit is used to acquire the first magnetic field information from the magnetic positioning system, and generate original position information of the catheter based on the first magnetic field information; the processing unit is further used to acquire relevant information of a digital subtraction angiography device that generates magnetic interference to the magnetic positioning system, and correct the original position information of the catheter based on the relevant information, thereby obtaining and outputting the corrected position information of the catheter.

[0004] According to another aspect of this application, an electrophysiological medical device is provided, comprising a catheter, a magnetic positioning system, a processing unit, and a display, wherein: the catheter is used for insertion into the human body; the magnetic positioning system includes a magnetic field generator and a magnetic sensor, the magnetic field generator being used to generate a magnetic field, and the magnetic sensor following the movement of the catheter to detect first magnetic field information of the location of the catheter within the human body; the processing unit is used to acquire the first magnetic field information from the magnetic positioning system, generate original position information of the catheter based on the first magnetic field information, and / or, based on the position information of a digital subtraction angiography device that generates magnetic interference to the magnetic positioning system, correct the original position information of the catheter to obtain corrected position information of the catheter; the processing unit is further used to control the display to display multiple position information options when a change in the position information of the digital subtraction angiography device is detected, so that a user can select the changed position information from the multiple position information options; the processing unit is further used to further correct the original position information of the catheter based on the changed position information and / or correct the corrected position information of the catheter to obtain and output the further corrected position information of the catheter.

[0005] According to another aspect of this application, an electrophysiological medical device is provided, comprising a catheter, a magnetic positioning system, and a processing unit, wherein: the catheter is used for insertion into the human body; the magnetic positioning system includes a magnetic field generator and a magnetic sensor, the magnetic field generator is used to generate a magnetic field, and the magnetic sensor moves with the catheter to detect first magnetic field information of the location of the catheter within the human body; the processing unit is used to acquire the first magnetic field information from the magnetic positioning system, generate original position information of the catheter based on the first magnetic field information, and / or, based on the position information of a digital subtraction angiography device that generates magnetic interference to the magnetic positioning system, correct the original position information of the catheter to obtain corrected position information of the catheter; the processing unit is further used to automatically acquire the changed position information of the digital subtraction angiography device when a change in the position information of the digital subtraction angiography device is detected; the processing unit is further used to further correct the original position information of the catheter based on the changed position information of the digital subtraction angiography device and / or correct the corrected position information of the catheter to obtain and output the further corrected position information of the catheter.

[0006] The electrophysiological medical device of this application can specifically address the impact of DSA equipment on the positioning accuracy of the magnetic positioning system, thereby improving positioning accuracy, avoiding the impact of low positioning accuracy on diagnosis and operation, and ultimately improving medical outcomes. Attached Figure Description

[0007] The above and other objects, features, and advantages of the present invention will become more apparent from the more detailed description of the embodiments of the invention in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same parts or steps.

[0008] Figure 1 A schematic structural block diagram of an electrophysiological medical device according to an embodiment of this application is shown.

[0009] Figure 2 This is a schematic diagram illustrating an example of a user interface of an electrophysiological medical device according to an embodiment of the present application, in which the user inputs the orientation of the DSA device.

[0010] Figure 3 This is a schematic diagram illustrating an example of a user interface for an electrophysiological medical device according to an embodiment of the present application to obtain product information of a DSA device through user input.

[0011] Figure 4 A schematic diagram showing a first mapping table used by an electrophysiological medical device according to an embodiment of this application.

[0012] Figure 5 A schematic diagram showing a second mapping table used in an electrophysiological medical device according to an embodiment of this application.

[0013] Figure 6 A schematic structural block diagram of an electrophysiological medical device according to another embodiment of this application is shown.

[0014] Figure 7 A schematic structural block diagram of an electrophysiological medical device according to another embodiment of this application is shown. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of the present invention, and not all of the embodiments of the present invention. It should be understood that the present invention is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention described herein without inventive effort should fall within the protection scope of the present invention.

[0016] Figure 1 A schematic structural diagram of an electrophysiological medical device 1 according to an embodiment of this application is shown. Figure 1As shown, the electrophysiological medical device 1 according to an embodiment of this application includes a catheter 11, a magnetic positioning system 12, and a processing unit 13. The catheter 11 is inserted into the human body. The magnetic positioning system 12 is used to detect first magnetic field information of the location of the catheter 11 within the human body. Specifically, the magnetic positioning system 12 may further include a magnetic field generator and a magnetic sensor. The magnetic field generator generates a magnetic field, and the magnetic sensor moves with the catheter 11 (e.g., the magnetic sensor is disposed on the catheter 11 or at other locations capable of detecting the magnetic field at the location of the catheter 11), thereby detecting the first magnetic field information of the location of the catheter 11 within the human body. The processing unit 13 is used to acquire the first magnetic field information from the magnetic positioning system 12 and generate original position information of the catheter 11 based on the first magnetic field information. The processing unit 13 is also used to acquire relevant information of a digital subtraction angiography (DSA) device that generates magnetic interference to the magnetic positioning system 12, and correct the original position information of the catheter 11 based on this relevant information to obtain and output the corrected position information of the catheter.

[0017] Because electrophysiological medical devices (such as electrophysiological three-dimensional cardiac mapping devices) require the patient to lie on a hospital bed during use, and a catheter is inserted into the heart, the heart is modeled by the movement of the catheter within the heart. The position of the catheter within the heart needs to be located by a magnetic positioning system. However, DSA devices typically include a C-arm at the patient's head, and the detectors and transmitters on the C-arm are made of metal and are close to the body, thus causing significant interference with catheter positioning. In the embodiments of this application, the magnetic interference generated by the DSA device on the magnetic positioning system 12 is considered. Therefore, after determining the position information of the catheter 11 based on the magnetic field detection results of the magnetic positioning system 12 (i.e., the first magnetic field information, which is, for example, the magnetic field strength), the position information needs to be corrected. To distinguish it from the corrected position information, the position information before correction is referred to as the original position information. Different DSA devices may produce different magnetic interferences, and the same DSA device may also produce different magnetic interferences under different conditions (e.g., different distances from the electrophysiological medical device 1). Therefore, in the embodiments of this application, by obtaining relevant information of DSA (such as the location information and / or product information of the DSA device), the original position information of the catheter 11 is corrected according to the relevant information (the correction here can be a correction of the original position information or a correction of the first magnetic field information; either correction can obtain an accurate catheter position), which can specifically solve the influence of the DSA device on the positioning accuracy of the magnetic positioning system, thereby improving the positioning accuracy, avoiding the impact of low positioning accuracy on diagnosis and operation, and thus improving the medical effect.

[0018] In the embodiments of this application, the relevant information of the DSA obtained by the processing unit 13 includes the location information and / or product information of the DSA.

[0019] The DSA location information includes the DSA's location coordinates and / or the orientation of the DSA device, which is the orientation of the DSA device relative to the patient (or the patient's heart) using the electrophysiological medical device 1. This orientation may be, for example, the DSA device being to the left (e.g., left anterior oblique), right (e.g., right anterior oblique), or centrally (or centrally) of the patient (or heart). From the patient's perspective, left anterior oblique means the C-arm is in front of the patient's head on the left, right anterior oblique means the C-arm is in front of the patient's head on the right, and left anterior oblique means the C-arm is directly in front of the patient's head. Different orientations can produce different magnetic interferences. For example, if the catheter is positioned at the patient's heart to create a three-dimensional model of the heart, since the heart is generally located on the left side of the body, the orientation of the DSA device—left, right, or centrally—will have different effects on the magnetic field strength at the specific location of the catheter within the heart, thus affecting the magnetic positioning of the catheter based on magnetic localization. Different location coordinates mean different distances between the DSA device and the catheter, which in turn have different effects on the magnetic field strength at the specific location of the catheter in the heart, thus affecting the catheter positioning based on magnetic positioning.

[0020] In some scenarios, either the DSA device's orientation relative to the patient or its distance from the patient is fixed, or its variation is so minor as to be negligible. In these cases, the default preset value for the former can be assumed, and only the latter is acquired to correct the catheter's position coordinates. In other scenarios, both the DSA device's orientation and distance from the patient may be fixed. In these cases, only the DSA device's product information (such as brand and / or model information) needs to be acquired. Different DSA products generally have different structures, resulting in varying effects on the magnetic field strength at the catheter's location, thus affecting magnetically-based catheter positioning. In still other scenarios, the DSA device's orientation, distance, and product information may all be predetermined. In these cases, pre-stored preset information for all three can be directly acquired to correct the catheter's position. Of course, in many scenarios, at least one of these three factors is unknown, requiring real-time acquisition for more targeted correction.

[0021] In the embodiments of this application, the location information and / or product information of DSA can be obtained in a variety of different ways.

[0022] In one embodiment, the location information of the DSA device can be obtained through the magnetic positioning system 12. In this embodiment, the magnetic positioning system 12 can also be used to detect a second magnetic field information at the location of the DSA. The processing unit 13 can obtain this second magnetic field information from the magnetic positioning system 12 and generate the DSA location information based on this second magnetic field information. In this embodiment, the magnetic positioning system 12 of the electrophysiological medical device 1 itself can not only locate the catheter of the electrophysiological medical device 1, but also locate the DSA device, making it convenient to use without relying on other external devices for DSA device positioning.

[0023] Depending on the specific configuration of the magnetic positioning system 12, the location information generated by the processing unit 13 may be either location coordinates or orientation. In one embodiment, the electrophysiological medical device 1 may further include a display (not shown). Assuming the magnetic positioning system 12 has weak positioning capabilities for DSA and can only roughly pinpoint its orientation, the processing unit 13 can also control the display to show the orientation for further user confirmation. For example, a control can be set to receive first user input (used to confirm or correct the orientation) and determine the final orientation result based on the first user input. In this embodiment, the orientation of the DSA device relative to the patient is determined through a combination of automatic and manual methods, resulting in a more accurate final positioning result, thereby improving the accuracy of catheter 11 position correction.

[0024] In another embodiment of this application, the DSA device is equipped with sensors (such as gyroscopes, inertial sensors, etc.), and the electrophysiological medical device 1 also includes a communication module (not shown). The processing unit 13 acquiring the location information of the DSA device may include: establishing a communication connection with the DSA device through the communication module, and acquiring the location information of the DSA device from the DSA device via the communication connection. In this embodiment, the DSA device is positioned using sensors installed on the DSA device, and by interconnecting the electrophysiological medical device 1 with the DSA device, the electrophysiological medical device 1 can acquire the location information of the DSA device from the DSA device more accurately, which is more beneficial for subsequent catheter 11 position correction. The sensors installed on the DSA device may be included with the DSA device at the factory or added additionally after the device is manufactured.

[0025] In another embodiment of this application, a sensor (such as a gyroscope, inertial sensor, etc.) may be installed on the patient's bed using the electrophysiological medical device 1. The electrophysiological medical device 1 also includes a communication module (not shown). The processing unit 13 may acquire the location information of the DSA device by: establishing a communication connection with the sensor on the bed through the communication module, and acquiring the location information of the DSA device from the sensor through the communication connection. In this embodiment, the DSA device is located by the sensor installed on the bed, and by interconnecting the electrophysiological medical device 1 with the sensor on the bed, the electrophysiological medical device 1 can acquire the location information of the DSA device from the sensor on the bed, thus achieving the location of the DSA device.

[0026] In another embodiment of this application, the electrophysiological medical device 1 further includes a display (not shown). The location information of the DSA device may include its orientation relative to the patient (such as left, right, or frontal as described above). The processing unit 13 obtains the location information of the DSA device, which may include: controlling the display to show multiple orientation options, receiving second user input (wherein the second user input is used to select an orientation from the multiple orientation options or to customize the input orientation), and obtaining the final orientation of the DSA device based on the second user input. Alternatively, it may be possible to eliminate the need to display orientation options and allow the user to customize the input orientation. In this embodiment, obtaining the location information of the DSA device through user input eliminates the need for the electrophysiological medical device 1 to locate the DSA device, and also eliminates the need for the DSA device itself to locate, resulting in lower costs and ensuring accurate positioning results.

[0027] Figure 2 This is a schematic diagram illustrating an example of a user interface for obtaining the orientation of a DSA device through user input. Figure 2 As shown, the interface displays a C-arm icon representing the DSA device, and also shows three orientation options: Left Anterior Oblique (LAO), Right Anterior Oblique (RAO), and Anteroposterior (AP). When the user clicks LAO, the processing unit 13 determines that the DSA device is located to the left front of the patient; when the user clicks RAO, the processing unit determines that the DSA device is located to the right front of the patient; and when the user clicks AP, the processing unit determines that the DSA device is located directly in front of the patient. Figure 2 In the example shown, the orientation options are displayed on the interface simultaneously, making it easy for users to select quickly.

[0028] In other examples, a blank control with an arrow on its right can be displayed. Clicking the arrow reveals a dropdown menu with all directional options for selection, or the user can directly input a custom direction within the blank control. For example, if the user inputs "left," the control will automatically fill with "left front diagonal." Alternatively, the user can input a direction other than the preset options. In this example, the directional options are displayed as a dropdown menu, saving display space. Furthermore, the control allows for custom input of directions other than the preset options, providing greater flexibility to meet a wider range of scenarios.

[0029] In other examples, user input can be obtained in any other suitable way to determine the location information of the DSA device, which will not be exemplified here.

[0030] The above describes several exemplary implementations of obtaining DSA device location information. The following describes several exemplary implementations of obtaining DSA device product information.

[0031] In one embodiment, the electrophysiological medical device 1 further includes a display (not shown), and the processing unit 13 acquires product information of the DSA device, including: controlling the display to show multiple product information options, receiving third user input (wherein the third user input is used to select product information from multiple product information options or to customize product information), and acquiring the product information of the DSA device based on the third user input. Alternatively, product information options can be entered by the user without displaying them. In this embodiment, acquiring the product information of the DSA device through user input is simple to implement and accurate, which is beneficial for subsequent correction of the catheter 11 position.

[0032] Figure 3 This is a schematic diagram illustrating an example of a user interface for obtaining DSA device product information through user input. For example... Figure 3 As shown, the interface displays a C-arm icon representing a DSA device, along with a blank control with an arrow to its right. Clicking the arrow reveals a dropdown menu containing all product information options. Each option can include the product brand and specific model, which can be selected from, or users can directly enter custom product information into the blank control. In this example, the product information options are displayed as a dropdown menu, saving display space. Furthermore, the control allows for the input of product information beyond the preset options, providing greater flexibility to meet a wider range of scenarios.

[0033] In other examples, you can also see options to directly present all or part of the commonly used product information so that users can make a quick selection.

[0034] In other examples, user input can be obtained in any other suitable way to determine the product information of the DSA device, which will not be exemplified here.

[0035] In another embodiment, the electrophysiological medical device 1 may include a communication module (not shown), and the processing unit 13 may acquire product information from the DSA device, including: establishing a communication connection with the DSA device through the communication module, and acquiring the product information from the DSA device via the communication connection. In this embodiment, the electrophysiological medical device 1 can automatically acquire the product information from the DSA device without user operation, which is more convenient.

[0036] The above examples illustrate several implementation methods for obtaining DSA device product information. The following describes the specific process of correcting the original position information of catheter 11 based on the obtained location information, product information, and other relevant information of the DSA device.

[0037] In embodiments of this application, the processing unit 13 corrects the original position information of the catheter 11 based on the acquired relevant information of the DSA device, and obtains and outputs the corrected position information of the catheter 11. This may include: acquiring a mapping table (e.g., stored in the memory of the electrophysiological medical device 1, or other storage device), the mapping table including compensation amounts corresponding to different of the aforementioned relevant information, the compensation amounts including magnetic field compensation amounts or position compensation amounts; determining the magnetic field compensation amount or position compensation amount corresponding to the acquired relevant information of the DSA device based on the mapping table and the acquired relevant information of the DSA device; compensating the aforementioned first magnetic field information based on the determined magnetic field compensation amount to obtain compensated magnetic field information; generating and outputting the corrected position information of the catheter 11 based on the compensated magnetic field information, or correcting the original position information of the catheter 11 based on the determined position compensation amount to obtain and output the corrected position information of the catheter 11.

[0038] In this embodiment, two methods for position information correction are provided. Method one involves obtaining a first mapping table, which includes compensation amounts corresponding to different of the aforementioned related information, including magnetic field compensation amounts. Therefore, after obtaining the relevant information from the DSA device, the magnetic field compensation amount corresponding to the obtained information can be found by searching the first mapping table. Based on this magnetic field compensation amount, the aforementioned first magnetic field information (i.e., the result of the magnetic field detection of the catheter 11 by the magnetic positioning system 12, which needs to be corrected due to magnetic interference from the DSA device) is compensated to obtain the compensated magnetic field information. The position coordinates of the catheter 11 calculated based on the compensated magnetic field information are the corrected position coordinates. In this embodiment, since the magnetic field information is directly compensated, it is not necessary to calculate the original position information of the catheter, because the position information obtained after compensating the magnetic field information is equivalent to the corrected position information. Figure 4 This shows an example diagram of the first mapping table.

[0039] Method two involves obtaining a second mapping table, which includes compensation amounts corresponding to different of the aforementioned related information. These compensation amounts include position compensation amounts (i.e., compensation amounts that compensate for the original position information of the catheter 11, such as position coordinates). Therefore, after obtaining the relevant information from the DSA device, the position compensation amount corresponding to the obtained information can be found by searching the second mapping table. Based on this position compensation amount, the aforementioned original position information (i.e., the original position information generated by the processing unit 13 based on the magnetic field detection result of the magnetic positioning system 12 on the catheter 11, which needs to be corrected due to magnetic interference from the DSA device) is compensated to obtain the compensated position information, i.e., the corrected position coordinates. In this embodiment, since the original position information of the catheter 11 is directly compensated, the corrected position information of the catheter 11 can be obtained "in one step." Figure 5 This shows an example diagram of the second mapping table.

[0040] In the embodiments of this application, the mapping table described above can be obtained through one of the following methods: calibrating each DSA device among multiple DSA devices to obtain the mapping table; or calibrating some DSA devices among multiple DSA devices and simulating the remaining DSA devices based on the calibration results to obtain the mapping table; or performing partial calibration on each DSA device among multiple DSA devices and simulating based on the partial calibration results to obtain the mapping table. Here, calibration refers to: the DSA device calibrates all locations within the magnetic field range of the magnetic positioning system; partial calibration refers to: the DSA device calibrates only some locations within the magnetic field range of the magnetic positioning system.

[0041] In this embodiment, several methods for obtaining the mapping table are provided. Method one involves pre-calibrating all existing DSA devices (such as various brands and models of DSA devices available on the market) to obtain calibration compensation relationships. Through these relationships, the interference caused by different DSA devices to the positioning of the catheter 11 under various conditions (e.g., different positions, different orientations) can be determined, thereby allowing the acquisition of corresponding compensation amounts and obtaining an accurate mapping table (i.e., the mapping table) for subsequent positioning compensation in actual use. Because this method calibrates each type of DSA device, the resulting mapping table is the most accurate.

[0042] Method two involves pre-calibrating a subset of existing DSA devices (e.g., one or more DSA devices) to obtain calibration compensation relationships. Then, based on these calibration compensation relationships, a compensation relationship corresponding to the remaining DSA devices is derived using a specific algorithm. To distinguish this from the calibration compensation relationships, the algorithmically derived compensation relationship is called the generated compensation relationship. This method allows for the determination of interference caused by various DSA devices to the positioning of catheter 11 under different conditions (e.g., different locations, different orientations), thereby enabling the acquisition of corresponding compensation amounts and obtaining an accurate mapping table (i.e., a mapping table) for subsequent positioning compensation in practical use. This method eliminates the need to calibrate all DSA devices, reducing calibration costs.

[0043] For example, two DSA devices of the same brand but different sizes can be calibrated. The smaller DSA device can be calibrated to obtain the amount of interference it generates at various locations within the magnetic field range generated by the magnetic positioning system, thereby determining the corresponding compensation amount. The compensation amount for the larger DSA device at various locations within the same magnetic field range can be generated based on the compensation amount obtained from the calibration. For example, the compensation amount for the smaller DSA device at various locations within the same magnetic field range can be substituted into a preset function, such as y = 2x, to obtain y as the compensation amount for the larger DSA device at various locations within the same magnetic field range.

[0044] Method three involves semi-calibrating and simulating each of the various existing DSA devices. For example, for one DSA device, the amount of interference at certain locations (positioning of the conduit 11) within the magnetic field range generated by the magnetic positioning system 12 is determined, thereby determining the corresponding compensation amounts at these locations. Then, the amount of interference at other locations (positioning of the conduit 11) within the same magnetic field range can be obtained, for example, through interpolation, thereby reducing calibration costs.

[0045] In one embodiment of this application, the aforementioned calibration may include: for each DSA device to be calibrated, acquiring the magnetic field information detected by the magnetic positioning system without magnetic interference from the DSA device to be calibrated, as the true magnetic field information, and acquiring the true position information based on the true magnetic field information; acquiring the magnetic field information detected by the magnetic positioning system under magnetic interference from the DSA device to be calibrated, as the error magnetic field information, and acquiring the error position information based on the error magnetic field information; recording the relevant information of the DSA device to be calibrated, determining the magnetic field compensation amount based on the true magnetic field information and the error magnetic field information, and establishing a mapping table between the recorded relevant information and the magnetic field compensation amount, or determining the position compensation amount based on the true position information and the error position information, and establishing a mapping table between the recorded relevant information and the position compensation amount.

[0046] Corresponding to the two mapping tables mentioned above—the first mapping table and the second mapping table—there are also two calibration methods. To obtain the first mapping table, it is necessary to obtain the magnetic field information at the location of catheter 11 without DSA interference (referred to as the true magnetic field information or third magnetic field information) and the magnetic field information at the location of catheter 11 with DSA interference (referred to as the error magnetic field information or fourth magnetic field information to distinguish it from the true magnetic field information). Based on these two, a first mapping table including magnetic field compensation can be obtained. Similarly, to obtain the second mapping table, it is necessary to obtain the position information at the location of catheter 11 without DSA interference (referred to as the true position information or first position information) and the position information at the location of catheter 11 with DSA interference (referred to as the error position information or second position information to distinguish it from the true position information). Based on these two, a second mapping table including position compensation can be obtained.

[0047] In the embodiments of this application, the compensation amounts corresponding to different brands and models of DSAs can be stored in one mapping table. Alternatively, the compensation amounts corresponding to different brands and models of DSAs can be stored separately. For example, the compensation amounts corresponding to different models and locations of DSA devices of brand A can be stored in one mapping table, and the compensation amounts corresponding to different models and locations of DSA devices of brand B can be stored in another mapping table. In this way, the processing unit 13 can search for different mapping tables according to the different brands of DSAs, thereby finding the results more quickly.

[0048] Besides obtaining the mapping table, other methods can be used to correct the original position information of catheter 11. For example, different brands and models of DSA can be mapped to a preset function, and the original position information (or corresponding magnetic field information) of catheter 11 can be substituted into the preset function to obtain the corrected position information.

[0049] The compensation amounts are stored in a mapping table. Alternatively, the compensation amounts corresponding to different brands and models of DSAs can be stored separately. For example, the compensation amounts corresponding to different models and locations of DSA devices of brand A can be stored in one mapping table, and the compensation amounts corresponding to different models and locations of DSA devices of brand B can be stored in another mapping table. In this way, the processing unit 13 can look up different mapping tables according to the different brands of DSAs, thereby finding the results faster.

[0050] In the embodiments of this application, after obtaining the corrected coordinates of the conduit 11, the corrected coordinates can be displayed on a monitor, thereby prompting the user to perform other operations based on the corrected coordinates.

[0051] In the embodiments of this application, the processing unit 13 can also be used to: automatically acquire new location information when the location information of the DSA device is detected to have changed; correct the original location information of the catheter 11 and / or correct the corrected location information of the catheter 11 based on the new location information, and obtain and output the corrected location information of the catheter 11.

[0052] For example, after the electrophysiological medical device 1 is powered on, the product information and location information of the DSA device that is interfering with the electrophysiological medical device 1 can be obtained for the first time. Then, according to the aforementioned mapping table, the corresponding compensation amount can be obtained to correct the original location information of the catheter 11. Subsequently, if the location information of the DSA device remains unchanged, the corresponding compensation can be made only according to the change in the location of the catheter 11. However, if for some reason, such as the doctor moving the bed, the orientation of the DSA device relative to the patient using the electrophysiological medical device 1 may change, the processing unit 13 can identify this change through the magnetic positioning system 12 (or through other methods of obtaining the location information of the DSA device as described above). At this time, the processing unit can automatically obtain the corresponding compensation amount according to the new location information of the DSA device to correct the original location information of the catheter 11 (or correct the aforementioned corrected location information), without the need for manual selection or configuration by the user.

[0053] In another embodiment, the electrophysiological medical device 1 further includes a display (not shown), and the processing unit 13 can also be used to: when a change in the position information of the DSA device is detected, control the display to show multiple position information options (e.g., orientation options); receive a second user input, the second user input being used to select an orientation from the multiple orientation options or to customize an input orientation; obtain new position information of the DSA device based on the second user input, and based on the new position information, further correct the original position information of the catheter 11 and / or correct the corrected position information of the catheter 11, to obtain and output the further corrected position information of the catheter. In this embodiment, after the processing unit 13 detects a change in the position information of the DSA device, it can obtain new position information of the DSA, such as orientation, through user input, similar to the above-described combination. Figure 2 The described method for obtaining DSA orientation provides accurate new location information of the DSA device for use in correcting the location information of catheter 11.

[0054] In one example, processing unit 13 controls the display to show multiple orientation options, which may include: controlling the display to pop up an orientation selection window, in which multiple orientation options are presented. In this example, when the user does not need to input orientation, the orientation selection window (e.g., ...) is not displayed. Figure 2 The user interface shown is hidden and not displayed, allowing more space on the screen to display other useful information.

[0055] In another example, processing unit 13 controls the display to show multiple directional options, which may include controlling a preset icon on the display to flash, prompting the user to select from multiple directional options displayed near the preset icon. In this example, regardless of whether the user needs to input directional information, the directional selection window (e.g., Figure 2 The user interface shown is always displayed. In this way, once a change in DSA position is detected, the flashing of the DSA icon in the displayed orientation selection window can prompt the user to input the orientation, which is very convenient.

[0056] The above description exemplarily illustrates an electrophysiological medical device 1 according to an embodiment of this application. Based on the above description, the electrophysiological medical device 1 according to an embodiment of this application, by acquiring relevant information from DSA and correcting the original position information of the catheter based on such relevant information, can specifically address the impact of DSA on the positioning accuracy of the magnetic positioning system, thereby improving positioning accuracy, avoiding the impact of low positioning accuracy on diagnosis and operation, and ultimately improving medical outcomes.

[0057] The following is combined Figure 6 Describes an electrophysiological medical device according to another embodiment of this application. Figure 6A schematic structural block diagram of an electrophysiological medical device 2 according to another embodiment of this application is shown. Figure 6 As shown, the electrophysiological medical device 2 includes a catheter 21, a magnetic positioning system 22, a processing unit 23, and a display 24. The catheter 21 is inserted into the human body. The magnetic positioning system 22 is used to detect first magnetic field information of the location of the catheter 21 within the human body. Specifically, the magnetic positioning system 22 may further include a magnetic field generator and a magnetic sensor. The magnetic field generator generates a magnetic field, and the magnetic sensor moves with the catheter 21, thereby detecting the first magnetic field information of the location of the catheter 21 within the human body. The processing unit 23 is used to acquire the first magnetic field information from the magnetic positioning system 22 and generate the original position information of the catheter 21 based on the first magnetic field information. The processing unit 23 is also used to acquire the position information of the DSA device that causes magnetic interference to the magnetic positioning system 22, and when a change in the position information of the DSA device is detected, control the display 24 to display multiple position information options, such as orientation options, so that the user can select the changed position information from multiple orientation options. The processing unit 23 is also used to correct the original position information of the catheter 21 based on the changed position information, obtaining and outputting the corrected position information of the catheter 21.

[0058] The electrophysiological medical device 2 according to the embodiments of this application is generally similar to the electrophysiological medical device 1 according to the embodiments of this application described above. The difference is that the electrophysiological medical device 2 mainly focuses on the processing unit 23 correcting the original position information of the catheter 21 according to the new position information after recognizing the change in the position information of DSA. Before recognizing the change in the position information of DSA, it is not limited whether the processing unit 23 corrects the original position information of the catheter 21 and how it corrects it, because there may be different scenarios.

[0059] For example, in one scenario, the brand, model, and location of the DSA device are all preset defaults. In such a scenario, the method for correcting the original position information of catheter 21 is also preset default, and processing unit 23 can directly correct the original position information of catheter 21 according to the preset compensation amount. After detecting a change in the DSA position information, the preset compensation amount may be inappropriate. At this time, a new compensation amount is obtained based on the new position information (e.g., according to the mapping table mentioned above) to correct the original position information of catheter 21.

[0060] In another scenario, although the DSA device may cause some magnetic interference to the positioning of catheter 21, the interference is small and can be ignored. However, the interference that may occur after the position of the DSA device changes should not be ignored. In this case, the original position information of catheter 21 should be corrected according to the new position information of the DSA device.

[0061] In another scenario, before the position of the DSA device changes, the processing unit 23 corrects the original position information of the catheter 21 based on the position information of the DSA device before the change; after the position of the DSA device changes, the processing unit 23 corrects the original position information of the catheter 21 again based on the position information of the DSA device after the change, or it can correct the previously corrected position information to obtain the corrected position information of the catheter 21.

[0062] In other scenarios, the operation of processing unit 23 may differ before the DSA device changes position. Overall, the electrophysiological medical device 2, upon detecting a change in the DSA device's position, can display multiple positional information options, such as orientation options, allowing the user to select the changed orientation. The original positional information of the catheter can then be corrected based on the user-selected new orientation. Since the new positional information of the DSA device is determined by the user, there is no need to expend computational resources to automatically obtain this information, ensuring its accuracy. Finally, the original positional information of the catheter is corrected based on this new positional information, effectively addressing the impact of the DSA device on the positioning accuracy of the magnetic positioning system. This improves positioning accuracy, avoids the impact of low positioning accuracy on diagnosis and operation, and ultimately improves medical outcomes.

[0063] Apart from the content mentioned above, electrophysiological medical device 2 is largely similar to electrophysiological medical device 1. For the sake of brevity, specific details will not be repeated here, but only some main contents will be briefly described.

[0064] In the embodiments of this application, the magnetic positioning system 22 is further used to detect the second magnetic field information of the location of the DSA device, and the processing unit 23 obtains the location information of the DSA device, including: obtaining the second magnetic field information from the magnetic positioning system 22, and generating the location information of the DSA device based on the second magnetic field information.

[0065] In the embodiments of this application, the DSA device is equipped with a sensor for detecting the location information of the DSA device. The electrophysiological medical device 2 also includes a communication module (not shown). The processing unit 23 obtains the location information of the DSA device by: establishing a communication connection with the DSA device through the communication module; and obtaining the location information of the DSA device from the DSA device through the communication connection.

[0066] In an embodiment of this application, a sensor is provided on the bed where the patient using the electrophysiological medical device 2 is located. The sensor is used to detect the location information of the DSA device. The electrophysiological medical device 2 also includes a communication module (not shown). The processing unit 23 obtains the location information of the DSA device by: establishing a communication connection with the sensor through the communication module; and obtaining the location information of the DSA device from the sensor through the communication connection.

[0067] In the embodiments of this application, the processing unit 23 re-corrects the original position information of the catheter 21 and / or corrects the corrected position information of the catheter 21 based on the changed position information, and obtains and outputs the re-corrected position information of the catheter 21, including: obtaining a mapping table, the mapping table including compensation amounts corresponding to different orientations of the DSA device, the compensation amounts including magnetic field compensation amounts or position compensation amounts; determining the magnetic field compensation amount or position compensation amount corresponding to the changed position information based on the mapping table and the obtained changed position information; compensating the first magnetic field information based on the determined magnetic field compensation amount to obtain the compensated magnetic field information; generating and outputting the corrected position information of the catheter 21 based on the compensated magnetic field information, or re-correcting the original position information of the catheter 21 and / or correcting the corrected position information of the catheter 21 based on the determined position compensation amount, and obtaining and outputting the re-corrected position information of the catheter 21.

[0068] In embodiments of this application, the multiple orientation options include: right anterior oblique, left anterior oblique, and orthographic.

[0069] In embodiments of this application, the processing unit 23 controls the display 24 to display multiple directional options, including: controlling the display 24 to pop up a directional selection window, in which multiple directional options are presented; or controlling a preset icon on the display 24 to flash, so as to prompt the user to select from multiple directional options displayed near the preset icon.

[0070] The following is a combination of the diagram and the following text. Figure 7 This application describes an electrophysiological medical device according to yet another embodiment. Figure 7 A schematic structural block diagram of an electrophysiological medical device 3 according to another embodiment of this application is shown. Figure 7As shown, the electrophysiological medical device 3 includes a catheter 31, a magnetic positioning system 32, and a processing unit 33. The catheter 31 is inserted into the human body. The magnetic positioning system 32 is used to detect the first magnetic field information of the location of the catheter 31 within the human body. Specifically, the magnetic positioning system 32 may further include a magnetic field generator and a magnetic sensor. The magnetic field generator generates a magnetic field, and the magnetic sensor moves with the catheter 31, thereby detecting the first magnetic field information of the location of the catheter 31 within the human body. The processing unit 33 is used to acquire the first magnetic field information from the magnetic positioning system 32 and generate the original position information of the catheter 31 based on the first magnetic field information. The processing unit 33 is also used to acquire the position information of the DSA device that causes magnetic interference to the magnetic positioning system 32, and automatically acquire the changed position information when a change in the position information of the DSA device is detected. The processing unit 33 is also used to further correct the original position information of the catheter 31 based on the changed position information and / or correct the corrected position information of the catheter 31, obtaining and outputting the further corrected position information of the catheter 31.

[0071] The electrophysiological medical device 3 according to the embodiments of this application is generally similar to the electrophysiological medical device 2 according to the embodiments of this application described above. The difference is that after recognizing the change in the position information of DSA, the electrophysiological medical device 3 automatically obtains the new position information of DSA device without requiring manual selection by the user. Therefore, it can reduce user operation and is more convenient.

[0072] Apart from the content mentioned above, electrophysiological medical device 3 is largely similar to electrophysiological medical device 2. For the sake of brevity, specific details will not be repeated here, but only some main contents will be briefly described.

[0073] In the embodiments of this application, the magnetic positioning system 32 is further used to detect the second magnetic field information of the location of the DSA device, and the processing unit 33 obtains the location information of the DSA device, including: obtaining the second magnetic field information from the magnetic positioning system 32, and generating the location information of the DSA device based on the second magnetic field information.

[0074] In an embodiment of this application, the processing unit 33 generates the location information of the DSA device based on the second magnetic field information, including: determining the location coordinates of the DSA device or determining the orientation of the DSA device relative to the patient using the electrophysiological medical device based on the second magnetic field information.

[0075] In embodiments of this application, the electrophysiological medical device 3 further includes a display (not shown). After determining the orientation of the DSA device relative to the patient using the electrophysiological medical device 3, the processing unit 33 is further configured to: control the display to show the orientation; receive a first user input, the first user input being used to confirm or modify the orientation; and determine the final orientation result based on the first user input.

[0076] In the embodiments of this application, the DSA device is equipped with a sensor for detecting the location information of the DSA device. The electrophysiological medical device 3 also includes a communication module (not shown). The processing unit 33 obtains the location information of the DSA device by: establishing a communication connection with the DSA device through the communication module; and obtaining the location information of the DSA device from the DSA device through the communication connection.

[0077] In the embodiments of this application, a sensor is provided on the bed where the patient using the electrophysiological medical device 3 is located. The sensor is used to detect the location information of the DSA device. The electrophysiological medical device 3 also includes a communication module (not shown). The processing unit 33 obtains the location information of the DSA device by: establishing a communication connection with the sensor through the communication module; and obtaining the location information of the DSA device from the sensor through the communication connection.

[0078] In the embodiments of this application, the processing unit 33 re-corrects the original position information of the catheter 31 and / or corrects the corrected position information of the catheter 31 based on the changed position information, and obtains and outputs the re-corrected position information of the catheter 31, including: obtaining a mapping table, the mapping table including compensation amounts corresponding to different position information of the DSA device, the compensation amounts including magnetic field compensation amounts or position compensation amounts; determining the magnetic field compensation amount or position compensation amount corresponding to the changed position information based on the mapping table and the obtained changed position information; compensating the first magnetic field information based on the determined magnetic field compensation amount to obtain the compensated magnetic field information; generating and outputting the corrected position information of the catheter 31 based on the compensated magnetic field information, or re-correcting the original position information of the catheter 31 and / or correcting the corrected position information of the catheter 31 based on the determined position compensation amount, and obtaining and outputting the re-corrected position information of the catheter 31.

[0079] The above examples exemplify electrophysiological medical devices according to embodiments of this application. Based on the above description, electrophysiological medical devices (such as electrophysiological medical device 1, electrophysiological medical device 2, and electrophysiological medical device 3 described above) according to embodiments of this application can specifically address the impact of DSA devices on the positioning accuracy of magnetic positioning systems, thereby improving positioning accuracy, avoiding the impact of low positioning accuracy on diagnosis and operation, and ultimately improving medical outcomes.

[0080] The following describes application examples of the electrophysiological medical device according to embodiments of this application.

[0081] In one example, the electrophysiological medical device according to embodiments of this application can be implemented as a cardiac mapping system. The cardiac mapping system can display the three-dimensional position of a conventional electrophysiological catheter within an overlapping model or image of the heart chambers, and can also display cardiac electrical activity as waveform trajectories and as a dynamic three-dimensional isopotential mapping map on the heart chamber model. The contour surface of the three-dimensional model is based on the anatomical structure of the patient's own heart chambers.

[0082] Cardiac mapping systems can use magnetically based positioning techniques to represent catheter positions and assist in model creation. Specifically, magnetic sensors embedded within the catheter are used to determine the catheter's position and orientation relative to one or more known reference locations. This magnetic position and orientation information can also be used to navigate the catheter, for example, when superimposed on a cardiac chamber model. However, when using magnetic positioning, the magnetic field generated from the positioning source is susceptible to the influence of metals, causing magnetic field distortion. This means that when navigating the catheter in magnetic space, even if there is no actual change (or minimal actual change) in the catheter's physical position, the displayed or otherwise reported position of the catheter can be significantly offset (e.g., visual offset on a mapping system display showing the catheter's position relative to the cardiac chamber) due to changes / distortions in the underlying magnetic field, resulting in inaccuracies in the model created based on the catheter position. Of all the effects of metals, the influence of DSA equipment, which is often located in the same operating room as the cardiac mapping system, is the most significant. Therefore, the electrophysiological medical device according to embodiments of this application, when implemented as a cardiac mapping system, can significantly mitigate the impact of this problem, as described above.

[0083] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above exemplary embodiments are merely illustrative and are not intended to limit the scope of the invention. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as claimed in the appended claims.

[0084] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0085] In the several embodiments provided by this invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed.

[0086] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0087] Similarly, it should be understood that, in order to streamline the invention and aid in understanding one or more of the various aspects of the invention, features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof in the description of exemplary embodiments of the invention. However, the method of the invention should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the corresponding claims, its inventive point lies in solving the corresponding technical problem with fewer features than all of those in a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0088] Those skilled in the art will understand that, apart from the mutual exclusion of features, all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or apparatus so disclosed can be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0089] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0090] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processing units, or a combination thereof. Those skilled in the art will understand that microprocessor units or digital signal processing units (DSPs) can be used in practice to implement some or all of the functions of some modules in the article analysis device according to embodiments of the present invention. The present invention can also be implemented as an apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such programs implementing the present invention can be stored on a computer-readable medium or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0091] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0092] The above are merely specific embodiments or descriptions of the present invention, and the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An electrophysiological medical device, characterized in that, The electrophysiological medical device includes a catheter, a magnetic positioning system, and a processing unit, wherein: The catheter is used for insertion into the human body; The magnetic positioning system includes a magnetic field generator and a magnetic sensor. The magnetic field generator is used to generate a magnetic field, and the magnetic sensor moves with the catheter to detect the first magnetic field information of the location of the catheter in the human body. The processing unit is used to obtain the first magnetic field information from the magnetic positioning system and generate the original position information of the catheter based on the first magnetic field information; The processing unit is also used to acquire relevant information about the digital subtraction angiography device that causes magnetic interference to the magnetic positioning system, and to correct the original position information of the catheter based on the relevant information, so as to obtain and output the corrected position information of the catheter.

2. The electrophysiological medical device according to claim 1, characterized in that, The relevant information of the digital subtraction angiography device obtained by the processing unit includes the location information of the digital subtraction angiography device and / or the product information of the digital subtraction angiography device. The location information of the digital subtraction angiography device includes the location coordinates of the digital subtraction angiography device and / or the orientation of the digital subtraction angiography device, wherein the orientation includes the orientation of the digital subtraction angiography device relative to the patient using the electrophysiological medical device or the orientation of the patient's heart using the electrophysiological medical device. The product information of the digital subtraction angiography (DSA) equipment includes the manufacturer and model of the DSA equipment.

3. The electrophysiological medical device according to claim 2, characterized in that, The magnetic positioning system is also used to detect the second magnetic field information of the location of the digital subtraction angiography device, and the processing unit generates the location information of the digital subtraction angiography device based on the second magnetic field information.

4. The electrophysiological medical device according to claim 3, characterized in that, The processing unit determines the position coordinates of the digital subtraction angiography device or the orientation of the digital subtraction angiography device based on the second magnetic field information.

5. The electrophysiological medical device according to claim 4, characterized in that, The electrophysiological medical device also includes a display, and after determining the orientation of the digital subtraction angiography device, the processing unit is further configured to: Control the display to show the orientation; Receive first user input, which is used to confirm or modify the location; Based on the first user input, the display is controlled to show the confirmed or modified orientation.

6. The electrophysiological medical device according to claim 2, characterized in that, The digital subtraction angiography device is equipped with a sensor for detecting the location information of the digital subtraction angiography device. The electrophysiological medical device also includes a communication module. The processing unit establishes a communication connection with the digital subtraction angiography device through the communication module and obtains the location information of the digital subtraction angiography device from the digital subtraction angiography device through the communication connection.

7. The electrophysiological medical device according to claim 2, characterized in that, A sensor is installed on the bed where the patient using the electrophysiological medical device is located. The sensor is used to detect the position information of the digital subtraction angiography device. The electrophysiological medical device also includes a communication module. The processing unit establishes a communication connection with the sensor through the communication module and obtains the position information of the digital subtraction angiography device from the sensor through the communication connection.

8. The electrophysiological medical device according to claim 2, characterized in that, The electrophysiological medical device also includes a display, and the location information of the digital subtraction angiography (DSA) device includes the orientation of the DSA device. The processing unit obtains the orientation of the digital subtraction angiography device by controlling the display to show multiple orientation options and receiving second user input, wherein the second user input is used to select an orientation from the multiple orientation options; or The processing unit obtains the orientation of the digital subtraction angiography device by receiving user-defined orientation input.

9. The electrophysiological medical device according to claim 1, characterized in that, The electrophysiological medical device also includes a display. The processing unit obtains product information of the digital subtraction angiography device by controlling the display to show multiple product information options and receiving third user input, wherein the third user input is used to select product information from the multiple product information options; or The processing unit obtains the product information of the digital subtraction angiography device by receiving user-defined product information.

10. The electrophysiological medical device according to claim 1, characterized in that, The electrophysiological medical device also includes a communication module. The processing unit establishes a communication connection with the digital subtraction angiography device through the communication module and obtains product information of the digital subtraction angiography device from the digital subtraction angiography device through the communication connection.

11. The electrophysiological medical device according to claim 1, characterized in that, The processing unit corrects the original position information of the catheter based on the relevant information, and obtains and outputs the corrected position information of the catheter, including: Obtain a mapping table, which includes compensation amounts corresponding to different relevant information, including magnetic field compensation amounts or position compensation amounts; Based on the mapping table and the acquired relevant information, determine the magnetic field compensation amount or position compensation amount corresponding to the acquired relevant information; The first magnetic field information is compensated based on the determined magnetic field compensation amount to obtain the compensated magnetic field information. The corrected position information of the catheter is generated and output based on the compensated magnetic field information, or the original position information of the catheter is corrected based on the determined position compensation amount to obtain and output the corrected position information of the catheter.

12. The electrophysiological medical device according to claim 11, characterized in that, The mapping table is obtained through one of the following two methods: The mapping table is obtained by calibrating each of the various digital subtraction angiography (DSA) devices; or... A subset of various digital subtraction angiography (DSA) devices is calibrated, and the remaining DSA devices are simulated based on the calibration results to obtain the mapping table; or, Each digital subtraction angiography (DSA) device among various digital subtraction angiography devices is semi-calibrated, and simulation is performed based on the semi-calibration results to obtain the mapping table. The calibration refers to the digital subtraction angiography device calibrating each location within the magnetic field range of the magnetic positioning system. The semi-calibration refers to the digital subtraction angiography device calibrating a portion of the magnetic field range of the magnetic positioning system.

13. The electrophysiological medical device according to claim 12, characterized in that, The calibration includes: for the digital subtraction angiography device to be calibrated: The magnetic field information detected by the magnetic positioning system without magnetic interference from the digital subtraction angiography device to be calibrated is used as the third magnetic field information. The magnetic field information detected by the magnetic positioning system under magnetic interference from the digital subtraction angiography device to be calibrated is used as the fourth magnetic field information. Record the relevant information of the digital subtraction angiography device to be calibrated, determine the magnetic field compensation amount based on the third magnetic field information and the fourth magnetic field information, and establish a mapping table between the recorded relevant information and the magnetic field compensation amount.

14. The electrophysiological medical device according to claim 12, characterized in that, The calibration includes: for the digital subtraction angiography device to be calibrated: The magnetic field information detected by the magnetic positioning system without magnetic interference from the digital subtraction angiography device to be calibrated is obtained as the third magnetic field information, and the first position information of the catheter is obtained based on the third magnetic field information. The magnetic field information detected by the magnetic positioning system under the condition of magnetic interference from the digital subtraction angiography device to be calibrated is obtained as the fourth magnetic field information, and the second position information of the catheter is obtained based on the fourth magnetic field information. Record the relevant information of the digital subtraction angiography device to be calibrated, determine the position compensation amount based on the first position information and the second position information, and establish a mapping table between the recorded relevant information and the position compensation amount.

15. The electrophysiological medical device according to claim 12, characterized in that, The simulation of the remaining digital subtraction angiography devices among the various digital subtraction angiography devices based on the calibration results includes: substituting the calibration results into a preset function; The simulation based on the semi-calibration results includes: interpolating the semi-calibration results.

16. The electrophysiological medical device according to claim 1, characterized in that, The electrophysiological medical device also includes a display, and the processing unit is further configured to: The display is controlled to show the corrected position information of the catheter.

17. The electrophysiological medical device according to claim 2, characterized in that, The processing unit is also used for: When a change in the position information of the digital subtraction angiography device is detected, the new position information of the digital subtraction angiography device is automatically acquired. Based on the new position information of the digital subtraction angiography device, the original position information of the catheter is further corrected and / or the corrected position information of the catheter is further corrected to obtain and output the further corrected position information of the catheter.

18. The electrophysiological medical device according to claim 2, characterized in that, The electrophysiological medical device also includes a display, and the processing unit is further configured to: When a change in the position information of the digital subtraction angiography device is detected: the new position information of the digital subtraction angiography device is obtained by controlling the display to show multiple position information options and receiving second user input, wherein the second user input is used to select position information from the position information options; or, the new position information of the digital subtraction angiography device is obtained by receiving user-defined position information. Based on the new position information of the digital subtraction angiography device, the original position information of the catheter is further corrected and / or the corrected position information of the catheter is further corrected to obtain and output the further corrected position information of the catheter.

19. The electrophysiological medical device according to claim 18, characterized in that, The multiple location information options include multiple orientation options, which include: right front oblique position option, left front oblique position option, and center position option.

20. The electrophysiological medical device according to claim 19, characterized in that, The processing unit controls the display to show the plurality of orientation options in one of the following ways: The display is controlled to pop up a direction selection window, which presents the multiple direction options; or Control the flashing of a preset icon on the display to prompt the user to select from multiple directional options displayed near the preset icon.

21. An electrophysiological medical device, characterized in that, The electrophysiological medical device includes a catheter, a magnetic positioning system, a processing unit, and a display, wherein: The catheter is used for insertion into the human body; The magnetic positioning system includes a magnetic field generator and a magnetic sensor. The magnetic field generator is used to generate a magnetic field, and the magnetic sensor moves with the catheter to detect the first magnetic field information of the location of the catheter in the human body. The processing unit is used to obtain the first magnetic field information from the magnetic positioning system, generate the original position information of the catheter based on the first magnetic field information, and / or, based on the position information of the digital subtraction angiography device that generates magnetic interference to the magnetic positioning system, correct the original position information of the catheter to obtain the corrected position information of the catheter. The processing unit is also configured to control the display to show multiple location information options when it detects a change in the location information of the digital subtraction angiography device, so that the user can select the changed location information from the multiple location information options. The processing unit is further configured to re-correct the original position information of the catheter based on the changed position information and / or correct the corrected position information of the catheter, so as to obtain and output the re-corrected position information of the catheter.

22. The electrophysiological medical device according to claim 21, characterized in that, The magnetic positioning system is also used to detect the second magnetic field information of the location of the digital subtraction angiography device, and the processing unit generates the location information of the digital subtraction angiography device based on the second magnetic field information.

23. The electrophysiological medical device according to claim 21, characterized in that, The digital subtraction angiography device is equipped with a sensor for detecting the location information of the digital subtraction angiography device. The electrophysiological medical device also includes a communication module. The processing unit establishes a communication connection with the digital subtraction angiography device through the communication module and obtains the location information of the digital subtraction angiography device from the digital subtraction angiography device through the communication connection.

24. The electrophysiological medical device according to claim 21, characterized in that, A sensor is installed on the bed where the patient using the electrophysiological medical device is located. The sensor is used to detect the position information of the digital subtraction angiography device. The electrophysiological medical device also includes a communication module. The processing unit establishes a communication connection with the sensor through the communication module and obtains the position information of the digital subtraction angiography device from the sensor through the communication connection.

25. The electrophysiological medical device according to any one of claims 21-24, characterized in that, The processing unit re-corrects the original position information of the catheter based on the changed position information and / or corrects the corrected position information of the catheter to obtain and output the re-corrected position information of the catheter, including: Obtain a mapping table, which includes compensation amounts corresponding to different positional information of the digital subtraction angiography device, including magnetic field compensation amounts or positional compensation amounts; Based on the mapping table and the acquired changed position information, determine the magnetic field compensation amount or position compensation amount corresponding to the changed position information; The first magnetic field information is compensated based on the determined magnetic field compensation amount to obtain compensated magnetic field information. The corrected position information of the catheter is generated and output based on the compensated magnetic field information. Alternatively, the original position information of the catheter is corrected and / or the corrected position information of the catheter is corrected based on the determined position compensation amount to obtain and output the corrected position information of the catheter.

26. The electrophysiological medical device according to any one of claims 21-24, characterized in that, The multiple location information options include multiple orientation options, which include: right front oblique position option, left front oblique position option, and center position option.

27. The electrophysiological medical device according to claim 26, characterized in that, The processing unit controls the display to show the plurality of orientation options in one of the following ways: The display is controlled to pop up a direction selection window, which presents the multiple direction options; or Control the flashing of a preset icon on the display to prompt the user to select from multiple directional options displayed near the preset icon.

28. An electrophysiological medical device, characterized in that, The electrophysiological medical device includes a catheter, a magnetic positioning system, and a processing unit, wherein: The catheter is used for insertion into the human body; The magnetic positioning system includes a magnetic field generator and a magnetic sensor. The magnetic field generator is used to generate a magnetic field, and the magnetic sensor moves with the catheter to detect the first magnetic field information of the location of the catheter in the human body. The processing unit is used to obtain the first magnetic field information from the magnetic positioning system, generate the original position information of the catheter based on the first magnetic field information, and / or, based on the position information of the digital subtraction angiography device that generates magnetic interference to the magnetic positioning system, correct the original position information of the catheter to obtain the corrected position information of the catheter. The processing unit is also used to automatically acquire the changed position information of the digital subtraction angiography device when it detects a change in the position information of the digital subtraction angiography device. The processing unit is further configured to re-correct the original position information of the catheter and / or correct the corrected position information of the catheter based on the changed position information of the digital subtraction angiography device, so as to obtain and output the re-corrected position information of the catheter.

29. The electrophysiological medical device according to claim 28, characterized in that, The magnetic positioning system is also used to detect the second magnetic field information of the location of the digital subtraction angiography device, and the processing unit generates the location information of the digital subtraction angiography device based on the second magnetic field information.

30. The electrophysiological medical device according to claim 29, characterized in that, The processing unit determines the position coordinates of the digital subtraction angiography device or the orientation of the digital subtraction angiography device based on the second magnetic field information.

31. The electrophysiological medical device according to claim 30, characterized in that, The electrophysiological medical device also includes a display, and after determining the orientation of the digital subtraction angiography device, the processing unit is further configured to: Control the display to show the orientation; Receive first user input, which is used to confirm or modify the location; Based on the first user input, the display is controlled to show the confirmed or modified orientation.

32. The electrophysiological medical device according to claim 28, characterized in that, The digital subtraction angiography device is equipped with a sensor for detecting the location information of the digital subtraction angiography device. The electrophysiological medical device also includes a communication module. The processing unit establishes a communication connection with the digital subtraction angiography device through the communication module and obtains the location information of the digital subtraction angiography device from the digital subtraction angiography device through the communication connection.

33. The electrophysiological medical device according to claim 28, characterized in that, A sensor is installed on the bed where the patient using the electrophysiological medical device is located. The sensor is used to detect the position information of the digital subtraction angiography device. The electrophysiological medical device also includes a communication module. The processing unit establishes a communication connection with the sensor through the communication module and obtains the position information of the digital subtraction angiography device from the sensor through the communication connection.

34. The electrophysiological medical device according to any one of claims 28-33, characterized in that, The processing unit re-corrects the original position information of the catheter based on the changed position information and / or corrects the corrected position information of the catheter to obtain and output the re-corrected position information of the catheter, including: Obtain a mapping table, which includes compensation amounts corresponding to different positional information of the digital subtraction angiography device, including magnetic field compensation amounts or positional compensation amounts; Based on the mapping table and the acquired changed position information, determine the magnetic field compensation amount or position compensation amount corresponding to the changed position information; The first magnetic field information is compensated based on the determined magnetic field compensation amount to obtain compensated magnetic field information. The corrected position information of the catheter is generated and output based on the compensated magnetic field information. Alternatively, the original position information of the catheter is corrected and / or the corrected position information of the catheter is corrected based on the determined position compensation amount to obtain and output the corrected position information of the catheter.

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