A cardiac magnetic signal measuring device and a measuring method

Abstract

The application provides a heart magnetic signal measuring device and a measuring method, which comprises a bed body, a surrounding measuring module and a plurality of detachable sensor array modules; the surrounding measuring module comprises a first measuring plate, a second measuring plate, a third measuring plate and a fourth measuring plate; the first measuring plate is liftable, and the second measuring plate and the third measuring plate are both translatable to adapt to different body types; each measuring plate is provided with a detachable sensor array module, the positions of the sensor array modules are adjustable, and the sensor array modules are replaceable to adapt to different heart magnetic signal measuring requirements; when the heart magnetic signal is measured, the sizes of the central measuring areas are adjusted by adjusting the measuring plates to make the measuring plates as close to the human body as possible; and the optimal layout of the heart magnetic signal measuring sensor distribution area is realized by designing the sensor array modules on the measuring plates. The application can adapt to different user measuring requirements and improve the adaptability and flexibility of the measuring system.

Description

Technical Field

[0001] This invention relates to the field of magnetic imaging technology, and in particular to a cardiac magnetic signal measuring device and method. Background Technology

[0002] Magnetic imaging is a functional imaging technique that uses highly sensitive magnetic field sensors to detect magnetic field signals associated with the electrophysiological activity of human organs. Taking magnetocardiography (MCG) as an example, MCG involves placing multiple magnetic sensors near the heart and synchronously measuring the magnetic field signals generated by the heart's electrophysiological activity cycle. Combining this with the spatial information of the sensor locations, a magnetic field image with physiological significance and medical diagnostic value is formed. Due to its high sensitivity and non-invasive diagnostic advantages, MCG has been widely adopted in clinical practice.

[0003] The SQUID magnetic sensor and atomic magnetometer, both based on the principle of superconducting quantum interference, are currently the two mainstream methods for measuring magnetocardiograms. Among them, the magnetic sensor of the atomic magnetometer has gained more attention in recent years due to its low equipment and operating costs and flexible deployment.

[0004] The flexible layout of atomic magnetometers offers more measurement possibilities, but it also places higher demands on the design of the layout and clamping devices. In signal processing, acquiring as much spatial distribution information of the cardiac magnetic field as possible is crucial for a complete reconstruction of cardiac physiological activity, which presents a challenge to the design of the spatial layout. In clinical applications, the measuring device must be compatible with people of different body types, while ensuring the precise and knowable position of the sensor, which presents a challenge to the design of the sensor clamping and adjustment methods. Summary of the Invention

[0005] This invention provides a cardiac magnetic signal measuring device and method to address the shortcomings of existing technologies, such as large device size and lack of flexibility and convenience in use, thereby improving the adaptability and flexibility of the measuring system.

[0006] This invention provides a cardiac magnetic signal measuring device, which is set inside a semi-open magnetic shielding cylinder. The device includes: a lying bed and a surround measuring module. The surround measurement module is a four-sided surround structure arranged around the reclining bed, including a first measuring plate, a second measuring plate, a third measuring plate, and a fourth measuring plate; wherein, the fourth measuring plate is disposed on the upper surface of the reclining bed, the first measuring plate is disposed on the horizontal plane directly above the reclining bed opposite to the fourth measuring plate, and the second measuring plate and the third measuring plate are perpendicular to the fourth measuring plate and disposed opposite to each other on both sides of the reclining bed; The first measuring plate can be raised and lowered along the vertical direction of the reclining bed, and the second and third measuring plates can be moved relative to each other to adjust the surrounding range of the four-sided surround structure to accommodate people of different body types. Each measuring plate is equipped with a detachable sensor array. The position of each detachable sensor array on each measuring plate is adjustable, and the layout of each detachable sensor array can be designed according to actual needs to adapt to different cardiac magnetic signal measurement requirements. When performing cardiac magnetic signal measurement, the size of the central measurement area is adjusted by adjusting each measuring plate to make each measuring plate as close to the human body as possible. Furthermore, the optimal layout of the cardiac magnetic signal measurement sensor distribution area is achieved by designing the detachable sensor array modules on each measuring plate.

[0007] According to the cardiac magnetic signal measuring device provided by the present invention, the lying bed includes a bed body, measuring armrests, push-pull armrests, and bottom pulleys; The main body of the bed features a hollow design to meet the requirements of being non-magnetic and requiring high processing precision; the main body of the bed is used for the human body to be measured to lie down. The measuring handrails are located on both sides of the main body of the bed and are used to place the arms during the measurement of the human body to be measured. The bottom pulley is located on the bottom plane of the main body of the bed and cooperates with the slide rail set on the magnetocardiogram measurement platform; The push-pull armrest is located at the rear end of the main body of the bed and is used to pull the main body of the bed to slide on the magnetocardiogram measurement platform to enter and exit the semi-open magnetic shielding cylinder.

[0008] According to the cardiac magnetic signal measuring device provided by the present invention, the fourth measuring plate is embedded in the bed body and is used to clamp the detachable sensor array module on the back of the subject and to support the upper surface of the bed body.

[0009] According to the cardiac magnetic signal measuring device provided by the present invention, the device further includes a hinge and a first adjustment module; The hinge is located at any edge of the first measuring plate along the lying direction of the human body to be measured. In use, the first measuring plate is rotated open by the hinge so that the human body to be measured can lie down or leave the lying bed. The first adjustment module includes an adjustment base, two adjustment handles, four adjustment limit posts, and two adjustment studs; the two adjustment handles and two adjustment studs are symmetrically distributed along the center line of the main body of the bed; the side of the adjustment base is horizontally connected to the side of the first measuring plate along the direction of the main body of the bed; the four adjustment limit posts are distributed at the four diagonal positions of the adjustment base; each adjustment handle cooperates with one of the two adjustment studs to form two spiral adjustment devices, each spiral adjustment device is screwed to the adjustment base through a through hole, and the limit posts are used to limit the lifting height of the first measuring plate; The first adjustment module is used to adjust the height of the first measuring plate by rotating the spiral adjustment device.

[0010] The cardiac magnetic signal measuring device provided by the present invention further includes two second adjustment modules. Each of the second adjustment modules includes a transmission gear, a conveyor belt, and a side plate connecting sheet metal part; The second measuring plate and the third measuring plate are respectively connected to the two side plates by rivets. Each side plate connecting sheet metal part is fixedly connected to the corresponding conveyor belt by rivets. Each conveyor belt is engaged with the corresponding transmission gear. When the second measuring plate and the third measuring plate move together through the transmission gear, the second measuring plate and the third measuring plate remain symmetrical with respect to the centerline of the bed body.

[0011] According to the cardiac magnetic signal measuring device provided by the present invention, each of the measuring plates is provided with multiple sensor slots. Different sensor slots are selected to fix the detachable sensor array module on each measuring plate according to specific measurement requirements.

[0012] According to the cardiac magnetic signal measuring device provided by the present invention, the sensor array module and the sensor slot are fixed by fastening studs, wherein the material of the fastening studs is titanium alloy or pure titanium.

[0013] According to the cardiac magnetic signal measuring device provided by the present invention, the detachable sensor array module can be in the form of a flat plate array or an arc-shaped array. The layout of the detachable sensor array module includes both neat horizontal and vertical arrangements and staggered intervals.

[0014] The present invention also provides a method for measuring cardiac magnetic signals, implemented by any of the cardiac magnetic signal measuring devices described above, the method comprising: Rotate and flip the first measuring plate so that the subject lies on the lying bed of the cardiac magnetic signal measuring device as required; The position of each measuring plate in the surround measurement module is adjusted according to the subject's body shape to ensure that each measuring plate is as close to the human body as possible; Adjust the position of the detachable sensor array in each measuring plate so that the detachable sensor array module can cover the subject's chest cavity area; Start the data acquisition system to record the magnetic field signals generated by the electrophysiological activity of the heart; The quality of the magnetic field signal is monitored in real time. If the quality of the magnetic field signal does not meet the preset requirements, the position of each detachable sensor array is adjusted and / or the lying posture of the subject is adjusted and / or one or more detachable sensor arrays are replaced, and the measurement is repeated.

[0015] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the cardiac magnetic signal measurement method as described above.

[0016] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the cardiac magnetic signal measurement method as described above.

[0017] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the cardiac magnetic signal measurement method as described above.

[0018] This invention provides a cardiac magnetic signal measurement device and method. The cardiac magnetic signal measurement device includes a lying bed and a surround measurement module. The surround measurement module is a four-sided structure arranged around the lying bed, including a first measurement plate, a second measurement plate, a third measurement plate, and a fourth measurement plate. The first measurement plate is height-adjustable, and the second and third measurement plates are both lateral to accommodate people of different body types. Each measurement plate is equipped with a detachable sensor array, and the position of each sensor array on each measurement plate is adjustable. The layout of each sensor array can be designed according to actual needs to adapt to different cardiac magnetic signal measurement requirements. During cardiac magnetic signal measurement, the size of the central measurement area is adjusted by adjusting each measurement plate to make each measurement plate as close to the human body as possible. Furthermore, the optimal layout of the sensor distribution area for cardiac magnetic signal measurement is achieved by designing the sensor arrays on each measurement plate. This invention can ensure measurement quality while adapting to the needs of different users, improving the adaptability and flexibility of the measurement system. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the cardiac magnetic signal measuring device provided by the present invention.

[0021] Figure 2 This is a front view of the bottom surface of a lying bed provided by the present invention for subjects to perform lying-down cardiac magnetic signal measurements.

[0022] Figure 3 This is a structural diagram of the sensor distribution area equipped with an extremely weak magnetic sensor provided by the present invention.

[0023] Figure 4 This is a structural diagram of the left and right measuring side plate connection device in the sensor distribution area provided by the present invention.

[0024] Figure 5 This is a front view of the upper measuring plate equipped with an extremely weak magnetic sensor provided by the present invention.

[0025] Figure 6 This is one of the flowcharts of the cardiac magnetic signal measurement method provided in the embodiments of the present invention.

[0026] Figure 7 These are the specific steps for measuring cardiac magnetic signals provided in the embodiments of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0028] Figure label: 1: Reclining bed frame; 2: Surround measurement module; 11: Push-pull handrail; 12: Measuring handrail; 13: Bottom casters; 21: Upper measuring plate; 22: Left and right measuring plates; 23: Lower measuring plate; 24: Upper measuring plate adjustment transmission device; 25: Left and right measuring side plate adjustment transmission device; 26: Hinge; 211: Sensor slot; 212: Detachable sensor array module; 213: Fastening stud; 241: Upper measuring plate adjustment handle; 242: Upper measuring plate adjustment limit post; 243: Upper measuring plate adjustment stud; 244: Upper measuring plate adjustment base; 245: Titanium screw; 251: Transmission gear; 252: Conveyor belt; 253: Sheet metal part connecting the side plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0030] The present invention will now be described in detail with reference to the accompanying drawings. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments. In the description of the present invention, unless otherwise stated, "at least one" includes one or more. "Multiple" refers to two or more. For example, at least one of A, B, and C includes: A existing alone, B existing alone, A and B existing simultaneously, A and C existing simultaneously, B and C existing simultaneously, and A, B, and C existing simultaneously. In the present invention, " / " means "or". For example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0031] To address the challenges of sensor placement, this invention proposes a cardiac magnetic signal measurement device and method. Through a spatially encircling layout, it accommodates the body size differences among various population groups. The upper plate and left and right side plates of the measurement area are movable to adjust the size of the central measurement area. Simultaneously, it ensures precise knowledge of the relative and absolute spatial positions of the sensors. The sensors employ a modular array design, enabling the acquisition of high-quality magnetocardiogram signals in a semi-open magnetically shielded space.

[0032] The present invention will now be described in detail with reference to specific embodiments.

[0033] In some specific embodiments of the present invention, such as Figure 1 As shown, this solution provides a cardiac magnetic signal measurement device for measuring cardiac magnetic signals in a semi-open magnetic shielding cylinder. The device includes: a lying bed 1 and a surround measurement module 2. The surround measurement module 2 is a four-sided surround structure arranged around the reclining bed, including a first measuring plate (upper measuring plate), a second measuring plate (left measuring plate), a third measuring plate (right measuring plate), and a fourth measuring plate (lower measuring plate). The fourth measuring plate is disposed on the upper surface of the reclining bed, the first measuring plate is disposed on the horizontal plane directly above the reclining bed relative to the fourth measuring plate, and the second measuring plate and the third measuring plate are perpendicular to the fourth measuring plate and disposed opposite to each other on both sides of the reclining bed; The first measuring plate can be raised and lowered along the vertical direction of the reclining bed 1, and the second and third measuring plates can be moved relative to each other to adjust the surrounding range of the four-sided surround structure to accommodate people of different body types; Each measuring plate is equipped with a detachable sensor array. The position of each detachable sensor array on each measuring plate is adjustable. The layout of each detachable sensor array can be designed according to actual needs to adapt to different cardiac magnetic signal measurement requirements. When performing cardiac magnetic signal measurement, the size of the central measurement area is adjusted by adjusting each of the measurement plates so that each measurement plate is as close to the human body as possible; and the optimal layout of the cardiac magnetic signal measurement sensor distribution area is achieved by designing the detachable sensor array on each measurement plate.

[0034] It should be noted that existing cardiac magnetic signal measurement solutions cannot achieve compatibility with people of different body types, and the clamping and adjustment of the sensor can only be achieved through a fixed position, which is relatively cumbersome to operate. In addition, the precise position of the sensor cannot be obtained, which cannot meet the user's needs for personalized and accurate cardiac magnetic signal measurement.

[0035] Therefore, this invention adopts a spatial surround layout to adapt to people of different body types. The upper plate and left and right side plates of the measurement area can be moved and adjusted to adapt to different chest cavity sizes. The sensor adopts a modular array design to ensure that the sensor position is accurately known. A semi-open magnetic shielding space is designed to collect high-quality magnetocardiogram signals.

[0036] Specifically, see still Figure 1 The surrounding measurement module 2 is essentially the sensor distribution area. Therefore, the measurement device can be considered as consisting of a reclining bed and the sensor distribution area. The entire measurement device is located in a semi-open magnetic shielding cylinder, providing a magnetic shielding environment for the operation of the atomic magnetometer. The reclining bed provides measurement of the human heart magnetic field in a reclining posture, and the sensor distribution area covers the thoracic cavity region in a reclining posture.

[0037] In some possible embodiments of the present invention, the reclining bed includes a bed body, measuring handrails, push-pull handrails, and bottom casters; The main body of the bed features a hollow design to meet the requirements of being non-magnetic and requiring high processing precision; the main body of the bed is used for the human body to be measured to lie down. The measuring handrails are located on both sides of the main body of the bed and are used to place the arms during the measurement of the human body to be measured. The bottom pulley is located on the bottom plane of the main body of the bed and cooperates with the slide rail set on the magnetocardiogram measurement platform; The push-pull armrest is located at the rear end of the main body of the bed and is used to pull the main body of the bed to slide on the magnetocardiogram measurement platform to enter and exit the semi-open magnetic shielding cylinder.

[0038] Specifically, this embodiment provides an implementation method for a reclining bed, in which the main body of the bed is pulled to slide on the magnetocardiogram measurement platform by means of the cooperation of the measuring handrail, the push-pull handrail and the bottom pulley, so as to enter and exit the semi-open magnetic shielding cylinder.

[0039] In possible embodiments, such as Figure 1 , 2 As shown, the core components of the reclining bed include: the main body of the bed, the measuring armrests, and the push-pull armrests. The core components of the sensor distribution area include: the upper measuring plate (first measuring plate), the left and right measuring side plates (second and third measuring plates), the lower measuring plate (fourth measuring plate), the upper measuring plate adjustment transmission device, the upper measuring plate adjustment limit post, the upper measuring plate adjustment handle, the left and right measuring side plate adjustment transmission device, the detachable sensor array module, and the fastening studs.

[0040] Furthermore, the main body of the bed features a hollow design, meeting the requirements for non-magnetic operation and machining precision in a shielded environment, and is manufactured using POM material. The area that mates with the sensor distribution area is a cavity, where a measuring plate on the upper surface of the bed forms a mechanical fit. The sensor measurement area can be detached from the reclining bed.

[0041] The measuring armrests are located on both sides of the measuring bed and are used to place the subject's arms during the measurement process.

[0042] The push-pull handle is located at the rear end of the measuring bed, making it convenient for the operator to push the bed into or pull out of the semi-open shielding cylinder.

[0043] The upper measuring plate in the sensor distribution area is height-adjustable. By rotating the upper measuring plate adjustment handle, the upper measuring plate can be raised and lowered in the vertical direction to meet the measurement needs of pleural cavities of different thicknesses. Its lowest point is located on the upper surface of the left and right measuring side plates, and its highest point does not exceed the height of the upper measuring plate adjustment limit post.

[0044] In some possible embodiments of the present invention, the fourth measuring plate is embedded in the bed body and is used to clamp the detachable sensor array module on the back of the subject and to support the upper surface of the bed body.

[0045] Specifically, the lower measuring plate (fourth measuring plate) fits tightly with the upper surface of the measuring bed and is embedded in the main body of the bed. It serves two functions: holding the back sensor and supporting the upper surface of the bed.

[0046] In some possible embodiments of the present invention, the device further includes a hinge and a first adjustment module; The hinge is located at any edge of the first measuring plate along the lying direction of the human body to be measured. In use, the first measuring plate is rotated open by the hinge so that the human body to be measured can lie down or leave the lying bed. The first adjustment module includes an adjustment base, two adjustment handles, four adjustment limit posts, and two adjustment studs; the two adjustment handles and two adjustment studs are symmetrical along the center line of the main body of the bed; the side of the adjustment base is horizontally connected to the side of the first measuring plate along the direction of the main body of the bed; the four adjustment limit posts are distributed at the four diagonal positions of the adjustment base; the two adjustment handles and the two adjustment studs cooperate to form two spiral adjustment devices, and the two spiral adjustment devices are screwed to the adjustment base through through holes; the limit posts are used to limit the lifting height of the first measuring plate. The first adjustment module is used to adjust the height of the first measuring plate by rotating the spiral adjustment device.

[0047] Specifically, this embodiment provides an implementation of a hinge and a first adjustment module in cardiac magnetic signal measurement. The first measuring plate (upper measuring plate) and the second or third measuring plate (left and right measuring plates) are connected by the hinge so that the first measuring plate (upper measuring plate) can be flipped open by the hinge so that the subject can lie in the surrounding measuring module above the bed.

[0048] Specifically, the upper measuring plate adjustment handles are located on both sides and connected by an upper measuring plate adjustment transmission device. Rotating either handle adjusts the height of the upper measuring plate. The transmission device ensures that rotating the handle on either side rotates the other side by the same distance, thus keeping the upper measuring plate horizontal at all times. The upper measuring plate adjustment limit posts are symmetrically distributed on both sides of the sensor distribution area, three on each side, and are made of pure titanium. These limit the travel range of the upper measuring plate and keep it horizontal.

[0049] In some possible embodiments of the present invention, the device further includes two second adjustment modules. Each of the second adjustment modules includes a transmission gear, a conveyor belt, and a side plate connecting sheet metal part; The second measuring plate and the third measuring plate are respectively connected to the two side plates by rivets. Each side plate connecting sheet metal part is fixedly connected to the corresponding conveyor belt by rivets. Each conveyor belt is engaged with the corresponding transmission gear. When the second measuring plate and the third measuring plate move together through the transmission gear, the second measuring plate and the third measuring plate remain symmetrical with respect to the centerline of the bed body.

[0050] Specifically, this embodiment provides an implementation of an adjustment device for adjusting the second measuring plate (left measuring plate) and the third measuring plate (right measuring plate). The left and right measuring side plates are designed to move inward and outward along guide rail grooves to meet the measurement needs of subjects with different chest cavity widths. The left and right measuring side plates are connected by a left and right measuring side plate adjustment transmission device, which allows adjusting either side plate inward or outward to move the opposite side plate the same distance inward or outward. The minimum and maximum distances of movement of the left and right side plates are limited by the guide rail grooves.

[0051] In some possible embodiments of the present invention, each of the measuring plates is provided with multiple sensor slots. Depending on the specific measurement requirements, different sensor slots are selected to fix the detachable sensor array module on each of the measuring plates.

[0052] Specifically, the detachable sensor array modules are located on the first measuring plate (upper measuring plate), the second measuring plate, the third measuring plate (left and right measuring plates), and the fourth measuring plate (lower measuring plate), respectively, forming a stable connection with the measuring plates via fastening studs. This array module can be disassembled individually, allowing for customized design and replacement of the number, position, and layout of sensor slots according to measurement needs, greatly improving system flexibility. The upper surface of the sensor array module slots has clamping plates and threaded holes, using titanium screws to secure the sensors in the slots. The lower surface of the array module (the surface closest to the subject) should be relatively thin to ensure the sensors are as close to the human body as possible.

[0053] In some possible embodiments of the present invention, the sensor array module and the sensor slot are fixed by fastening studs, wherein the fastening studs are made of titanium alloy or pure titanium.

[0054] Specifically, this embodiment provides an implementation method for fixing a sensor array module to a sensor slot, wherein fastening studs made of titanium alloy or pure titanium are selected to achieve less electromagnetic interference.

[0055] In some possible embodiments of the present invention, the detachable sensor array module is in the shape of a flat array or an arc array; The layout of the detachable sensor array module includes both neat horizontal and vertical arrangements and staggered intervals.

[0056] Specifically, this embodiment provides an implementation of the shape and layout of a detachable sensor array module. The design of the detachable sensor array module includes, but is not limited to, flat array, arc array, and other implementation forms. The sensor layout can be configured as a variety of possible layouts, such as neat horizontal and vertical arrangement or staggered arrangement.

[0057] In one specific embodiment, while referring to Figure 1 , Figure 2 This embodiment provides a recumbent cardiac magnetic signal measuring device for measuring human cardiac magnetic field signals, consisting of a recumbent bed 1 and a sensor distribution area 2. The bed 1 is supported on the cardiac magnetic measurement platform by bottom pulleys 13. The experimental operator pulls the bed 1 on the cardiac magnetic measurement platform by pushing and pulling the handrails 11, moving it in and out of the magnetic shielding barrel.

[0058] Furthermore, the subject lies on the bed 1, with the chest and abdomen area covered by the sensor distribution area 2, to measure the magnetic field signal of the heart in the extremely weak magnetic environment of the magnetic shielding barrel. The measuring handrails 12 are symmetrically distributed on the left and right sides of the bed 1, allowing the subject to lean on them to ensure that they maintain a comfortable posture for lying measurement.

[0059] In another specific embodiment, while referring to Figure 3 , Figure 4 The sensor distribution area 2 provided in this embodiment includes five parts: an upper measuring plate 21, left and right measuring side plates 22, a lower measuring plate 23, an upper measuring plate adjustment transmission device 24, and a left and right measuring side plate adjustment transmission device 25. The upper measuring plate 21, left and right measuring side plates 22, and lower measuring plate 23 are all equipped with several atomic magnetometers to measure the weak magnetic field signal of the human heart. The four measuring plates cover the chest cavity area of ​​the subject in all directions, which can comprehensively improve the richness of information.

[0060] In a possible embodiment, the upper measuring plate 21 is located directly above the subject's chest cavity region, parallel to the lower measuring plate 22 and the bed 1. The experimenter can adjust the height of the upper measuring plate 21 along the direction of the upper measuring plate adjustment limit post 242 by adjusting the upper measuring plate adjustment handle 241 of the upper measuring plate adjustment transmission device 24, thereby better adapting to subjects of different body types to ensure their comfort while lying down. Simultaneously, the upper measuring plate 21 should not be too far from the chest cavity region to ensure a sufficient signal-to-noise ratio for the measurement signal. During the experiment, the upper measuring plate 21 is first rotated open via the hinge 26, allowing the subject to lie down on the bed 1. After the subject is positioned appropriately and the positions of the upper measuring plate 21, the left and right measuring side plates 22, and the lower measuring plate 23 are adjusted, the upper measuring plate 21 is also opened via the hinge 26 to expose the subject's chest cavity markers. Subsequently, the experimenter uses a laser scanner to scan the torso markers to determine the relative position of the subject's torso to each atomic magnetometer in the experimental scenario.

[0061] In a possible embodiment, the upper measuring plate adjustment transmission device 24 consists of an upper measuring plate adjustment handle 241, an upper measuring plate adjustment limit post 242, an upper measuring plate adjustment stud 243, and an upper measuring plate adjustment base 244. The upper measuring plate adjustment limit post 242, the upper measuring plate adjustment stud 243, and the upper measuring plate adjustment base 244 are symmetrical about the centerline of the bed 1 and are all made of pure titanium or titanium alloy, increasing structural strength while ensuring no interference with the measurement of the subject's extremely weak cardiac magnetic field. The upper measuring plate adjustment base 244 and the upper measuring plate adjustment transmission device 24 are fixedly connected by rivets to ensure that they are in a relatively static state during adjustment; the upper measuring plate adjustment base 244 has threads of the same specification as the upper measuring plate adjustment stud 243, and the two are in a helical fit. The threaded rod fixing slot can be fixed with titanium screws 245. When the experimenter makes the adjustment, he holds the two symmetrical upper measuring plate adjustment handles 241 with both hands and rotates them, which drives the upper measuring plate adjustment stud 243 to rotate. During the rotation, no longitudinal displacement is generated. Thus, through the screw engagement, the upper measuring plate adjustment base 244 is driven to move up and down on the upper measuring plate adjustment stud 243. Finally, through the connection of the upper measuring plate adjustment transmission device 24, the upper measuring plate 21 is driven to move up and down horizontally.

[0062] In a possible embodiment, the left and right measuring side plates 22 are located on the left and right sides of the subject's chest cavity region. Similar to the upper measuring plate 21, the experimenter can also adjust the distance between the left and right measuring side plates 22 by adjusting the left and right measuring side plate adjustment transmission device 25 to accommodate subjects of different body sizes and ensure a certain signal-to-noise ratio of the measurement signal. Under the action of the transmission gear 251 and the conveyor belt 252, the symmetry of the adjustment of the left and right measuring side plates 22 can be ensured, that is, after each adjustment, the left and right measuring side plates are mirror-symmetrical with respect to the center line of the bed 1.

[0063] In a possible embodiment, the left and right measuring side plate adjustment transmission device 25 includes three parts: a transmission gear 251, a conveyor belt 252, and a side plate connecting sheet metal part 253. The side plate connecting sheet metal parts 253 are made of non-magnetic materials such as pure titanium or titanium alloy and are fixedly connected to the left and right measuring side plates 22 by rivets. The two can move together. The side plate connecting sheet metal parts 253 connected to the left and right measuring side plates 22 are fixedly connected to two positions of the conveyor belt 252 by rivets. The conveyor belt 252 is locked on two transmission gears 251. The experimenter pushes and pulls the left and right measuring side plates 22, thereby driving the conveyor belt 252 connected to the side plate connecting sheet metal parts 253 to rotate clockwise or counterclockwise around the transmission gears 251. Since the side plate connecting sheet metal parts 253 connected to the left and right measuring side plates 22 are fixed on both sides of the conveyor belt 252, and the conveyor belt 252 does not deform along the direction of movement, the left and right measuring side plates 22 can be translated by the same distance in two opposite directions each time, thus ensuring that the symmetry of the left and right measuring side plates 22 relative to the center line of the bed body 1 will not be changed each time the left and right measuring side plates 22 are adjusted.

[0064] In a possible embodiment, the lower measuring plate 23 is at the same horizontal height as the surface of the bed 1 to ensure the comfort of the subject lying down. The distance between the sensor mounted on the lower measuring plate 23 and the back of the subject is clearly defined, which can ensure that the signal-to-noise ratio of the measured magnetic field signal is large enough, and there is a certain distance to dissipate the heat generated by the operation of the atomic magnetometer, thus ensuring the subject's experience. Therefore, the height of the lower measuring plate 23 does not need to be adjusted.

[0065] In another specific embodiment, such as Figure 5 As shown, taking the above measuring plate 21 as an example, it is equipped with 30 sensor slots 211 to house atomic magnetometers. The width of the sensor slots 211 matches the size of the atomic magnetometers and is made of materials with good heat insulation and heat resistance. This ensures that the subjects will not experience physiological discomfort due to heat dissipation from the atomic magnetometers during the experiment, and also ensures that the material of the sensor slots 211 itself will not deform, thus preventing changes in the position and orientation of the atomic magnetometers. After the atomic magnetometers are installed into the sensor slots 211, they are secured by the detachable sensor array module 212 and finally fixed by the fastening studs 213. This ensures that the position and orientation of the atomic magnetometers will not change during the movement of the bed 1 in and out of the magnetic shielding barrel. The installation and disassembly methods are simple and convenient. The fastening studs 213 are made of titanium alloy or pure titanium, resulting in low electromagnetic interference.

[0066] This invention provides a cardiac magnetic signal measurement device usable in a semi-open magnetically shielded space. It includes a sensor array distribution area design with four sides surrounding the space and three sides adjustable, a detachable sensor array module board, and various forms and layouts of the sensor array modules. The surrounding layout can adapt to people of different body types; the upper plate and left and right side plates of the measurement area are movable and adjustable to accommodate different chest cavity sizes; the sensors adopt a modular array design to ensure accurate sensor positioning; and the semi-open magnetically shielded space allows for the acquisition of high-quality magnetocardiogram signals, thereby achieving accurate cardiac magnetic signal measurement for people of different body types.

[0067] In some specific embodiments of the present invention, such as Figure 6 As shown, this solution provides a method for measuring cardiac magnetic signals, implemented using any of the cardiac magnetic signal measuring devices described above. The method includes: Step 610: Rotate and flip the first measuring plate so that the subject lies on the lying bed of the magnetocardiogram measuring device as required; Step 620: Adjust the position of each measuring plate in the surround measurement module according to the subject's body shape to ensure that each measuring plate is as close to the human body as possible; Step 630: Adjust the position of the detachable sensor array in each measuring plate so that the detachable sensor array module can cover the subject's chest cavity area; Step 640: Start the data acquisition system and record the magnetic field signals generated by the electrophysiological activity of the heart; Step 650: Monitor the quality of the magnetic field signal in real time. If the quality of the magnetic field signal does not meet the preset requirements, adjust the position of each detachable sensor array and / or adjust the lying posture of the subject and / or replace one or more of the detachable sensor arrays, and re-measure.

[0068] Specifically, this embodiment provides an implementation method for measuring cardiac magnetic signals, which uses a cardiac magnetic signal measuring device to accurately measure cardiac magnetic signals in people of different body types.

[0069] In some specific embodiments of the present invention, such as Figure 7 As shown, this solution provides the specific steps for measuring cardiac magnetic signals, as follows: Step 710: Prepare the measuring device. In this step, the cardiac magnetic signal measuring device is placed in a semi-open magnetic shielding cylinder to ensure a magnetically shielded environment for the operation of the atomic magnetometer.

[0070] Step 720: Subject lies down. In this step, the subject lies on the bed with the chest and abdomen area covered by the sensor distribution area.

[0071] Step 730: Set up the measuring handrail: In this step, the measuring armrests are symmetrically distributed on the left and right sides of the bed, allowing the subject to lean on them with both hands to ensure that they maintain a comfortable posture for lying measurement.

[0072] Step 740: Use the push-pull handrail: In this step, the experimenters use push-pull handles to pull the bed body to slide on the magnetocardiogram measurement platform and move in and out of the magnetic shielding barrel.

[0073] Step 750: Adjust the sensor distribution area: In this step, the experimenters adjusted the height of the upper measuring plate by adjusting the upper measuring plate adjustment handle of the upper measuring plate adjustment transmission device to adapt to subjects of different body types.

[0074] The sensor position is adjusted according to the subject's body shape to ensure that the sensor can fully cover the subject's chest area.

[0075] Researchers adjusted the distance between the left and right measuring side plates by adjusting the transmission device to accommodate subjects of different body sizes.

[0076] Step 760: Install the sensor array module: In this step, the detachable sensor array module is located on the upper measuring plate, left and right measuring plates, and lower measuring plate, respectively, and forms a stable connection with the measuring plate through fastening studs.

[0077] The upper surface of the sensor array module slot has a clamping plate and threaded holes, and the sensor is fixed in the slot by titanium screws.

[0078] Using detachable sensor array modules, sensors such as atomic magnetometers are fixed in their respective positions.

[0079] Step 770: Scan the subject's torso marker blocks: In this step, researchers used a laser scanner to scan the torso marker blocks to determine the relative position of the subject's torso to each atomic magnetometer in the experimental setting.

[0080] Step 780: Acquire measurement signals: In this step, after adjusting the subject's position and the sensor's position, the data acquisition system is activated to begin recording the cardiac magnetic field signals generated by the cardiac electrophysiological activity.

[0081] The signal quality is monitored in real time during the measurement process, and the sensor position or subject posture is adjusted as necessary.

[0082] Step 790, Data Recording and Analysis: In this step, the magnetic field signals generated by the cardiac electrophysiological activity cycle measured by each sensor are synchronized and combined with the spatial information of the sensor location to form a magnetic field image with physiological significance and medical diagnostic value.

[0083] Cardiac magnetic signal measurement is a non-invasive method for examining cardiac function. The above-described setup in this embodiment provides important information for the diagnosis and research of heart disease by accurately measuring changes in the cardiac magnetic field.

[0084] Figure 8 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 8 As shown, the electronic device may include a processor 810, a communications interface 820, a memory 830, and a communication bus 840, wherein the processor 810, communications interface 820, and memory 830 communicate with each other via the communication bus 840. The processor 810 can call logical instructions in the memory 830 to execute a cardiac magnetic signal measurement method. This method includes: rotating and unfolding the first measuring plate so that the subject lies on the lying bed of the cardiac magnetic measurement device as required; adjusting the position of each measuring plate in the surround measuring module according to the subject's body shape to ensure that each measuring plate is as close to the body as possible; adjusting the position of the detachable sensor array in each measuring plate so that the detachable sensor array module can cover the subject's chest cavity area; activating the data acquisition system to record the magnetic field signal generated by cardiac electrophysiological activity; monitoring the quality of the magnetic field signal in real time; and, if the quality of the magnetic field signal does not meet preset requirements, adjusting the position of each detachable sensor array and / or adjusting the subject's lying posture and / or replacing one or more of the detachable sensor arrays, and re-measuring.

[0085] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0086] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to execute the cardiac magnetic signal measurement method provided by the above methods. The method includes: rotating and flipping open a first measuring plate so that the subject lies on the lying bed of the cardiac magnetic measurement device as required; adjusting the position of each measuring plate in the surround measuring module according to the subject's body shape to ensure that each measuring plate is as close to the human body as possible; adjusting the position of the detachable sensor array in each measuring plate so that the detachable sensor array module can cover the subject's chest cavity area; starting the data acquisition system to record the magnetic field signal generated by cardiac electrophysiological activity; monitoring the quality of the magnetic field signal in real time, and if the quality of the magnetic field signal does not meet the preset requirements, adjusting the position of each detachable sensor array and / or adjusting the subject's lying posture and / or replacing one or more of the detachable sensor arrays, and re-measuring.

[0087] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the cardiac magnetic signal measurement method provided by the above methods. The method includes: rotating and unfolding a first measuring plate to allow a subject to lie on the lying bed of the cardiac magnetic measurement device as required; adjusting the position of each measuring plate in the surround measuring module according to the subject's body shape to ensure that each measuring plate is as close to the human body as possible; adjusting the position of the detachable sensor array in each measuring plate so that the detachable sensor array module can cover the subject's chest cavity area; activating a data acquisition system to record magnetic field signals generated by cardiac electrophysiological activity; monitoring the quality of the magnetic field signals in real time; and, if the quality of the magnetic field signals does not meet preset requirements, adjusting the position of each detachable sensor array and / or adjusting the subject's lying posture and / or replacing one or more of the detachable sensor arrays, and re-measuring.

[0088] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0089] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cardiac magnetic signal measuring device, characterized in that, The device, housed within a semi-open magnetic shielding cylinder, includes: a reclining bed and a surround measurement module; The surround measurement module is a four-sided surround structure arranged around the reclining bed, including a first measuring plate, a second measuring plate, a third measuring plate, and a fourth measuring plate; wherein, the fourth measuring plate is disposed on the upper surface of the reclining bed, the first measuring plate is disposed on the horizontal plane directly above the reclining bed opposite to the fourth measuring plate, and the second measuring plate and the third measuring plate are perpendicular to the fourth measuring plate and disposed opposite to each other on both sides of the reclining bed; The first measuring plate can be raised and lowered along the vertical direction of the reclining bed, and the second and third measuring plates can be moved relative to each other to adjust the surrounding range of the four-sided surround structure to accommodate people of different body types. Each measuring plate is equipped with a detachable sensor array. The position of each detachable sensor array on each measuring plate is adjustable, and the layout of each detachable sensor array can be designed according to actual needs to adapt to different cardiac magnetic signal measurement requirements. When performing cardiac magnetic signal measurement, the size of the central measuring area is adjusted by adjusting each measuring plate to make each measuring plate as close to the human body as possible. Furthermore, the optimal layout of the cardiac magnetic signal measurement sensor distribution area is achieved by designing the detachable sensor arrays on each measuring plate.

2. The cardiac magnetic signal measuring device according to claim 1, characterized in that, The reclining bed includes a main body, measuring handrails, push-pull handrails, and bottom casters; The main body of the bed features a hollow design to meet the requirements of being non-magnetic and requiring high processing precision; the main body of the bed is used for the human body to be measured to lie down. The measuring handrails are located on both sides of the main body of the bed and are used to place the arms during the measurement of the human body to be measured. The bottom pulley is located on the bottom plane of the main body of the bed and cooperates with the slide rail set on the magnetocardiogram measurement platform; The push-pull armrest is located at the rear end of the main body of the bed and is used to pull the main body of the bed to slide on the magnetocardiogram measurement platform to enter and exit the semi-open magnetic shielding cylinder.

3. The cardiac magnetic signal measuring device according to claim 2, characterized in that, The fourth measuring plate is embedded in the main body of the bed and is used to clamp the detachable sensor array module on the back of the subject and to support the upper surface of the main body of the bed.

4. The cardiac magnetic signal measuring device according to claim 1, characterized in that, The device also includes a hinge and a first adjustment module; The hinge is located at any edge of the first measuring plate along the lying direction of the human body to be measured. In use, the first measuring plate is rotated open by the hinge so that the human body to be measured can lie down or leave the lying bed. The first adjustment module includes an adjustment base, two adjustment handles, four adjustment limit posts, and two adjustment studs; the two adjustment handles and two adjustment studs are symmetrically distributed along the center line of the main body of the bed; the side of the adjustment base is horizontally connected to the side of the first measuring plate along the direction of the main body of the bed; the four adjustment limit posts are distributed at the four diagonal positions of the adjustment base; each adjustment handle cooperates with one of the two adjustment studs to form two spiral adjustment devices, each spiral adjustment device is screwed to the adjustment base through a through hole, and the limit posts are used to limit the lifting height of the first measuring plate; The first adjustment module is used to adjust the height of the first measuring plate by rotating the spiral adjustment device.

5. The cardiac magnetic signal measuring device according to claim 1, characterized in that, The device also includes two second adjustment modules. Each of the second adjustment modules includes a transmission gear, a conveyor belt, and a side plate connecting sheet metal part; The second measuring plate and the third measuring plate are respectively connected to the two side plates by rivets. Each side plate connecting sheet metal part is fixedly connected to the corresponding conveyor belt by rivets. Each conveyor belt is engaged with the corresponding transmission gear. When the second measuring plate and the third measuring plate move together through the transmission gear, the second measuring plate and the third measuring plate remain symmetrical with respect to the centerline of the bed body.

6. The cardiac magnetic signal measuring device according to claim 1, characterized in that, Each of the aforementioned measuring boards is equipped with multiple sensor slots. Depending on the specific measurement requirements, different sensor slots are selected to fix the detachable sensor array module on each of the aforementioned measuring boards.

7. The cardiac magnetic signal measuring device according to claim 6, characterized in that, The sensor array module and the sensor slot are fixed by fastening studs, wherein the fastening studs are made of titanium alloy or pure titanium.

8. The cardiac magnetic signal measuring device according to claim 1, characterized in that, The detachable sensor array module includes a flat panel array and an arc-shaped array. The layout of the detachable sensor array module includes both neat horizontal and vertical arrangements and staggered intervals.

9. A method for measuring cardiac magnetic signals, implemented using the cardiac magnetic signal measuring device according to any one of claims 1-8, characterized in that, The method includes: Rotate and flip the first measuring plate so that the subject lies on the lying bed of the cardiac magnetic signal measuring device as required; The position of each measuring plate in the surround measurement module is adjusted according to the subject's body shape to ensure that each measuring plate is as close to the human body as possible; Adjust the position of the detachable sensor array in each measuring plate so that the detachable sensor array module can cover the subject's chest cavity area; Start the data acquisition system to record the magnetic field signals generated by the electrophysiological activity of the heart; The quality of the magnetic field signal is monitored in real time. If the quality of the magnetic field signal does not meet the preset requirements, the position of each detachable sensor array is adjusted and / or the lying posture of the subject is adjusted and / or one or more detachable sensor arrays are replaced, and the measurement is repeated.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the cardiac magnetic signal measurement method as described in claim 9.

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