CN217007652U

CN217007652U - Magnetic resonance system

Info

Publication number: CN217007652U
Application number: CN202220431163.5U
Authority: CN
Inventors: 赵华炜; 虞维兴; 王鹏
Original assignee: Hefei Zepu Medical System Co ltd
Current assignee: Hefei Zepu Medical System Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-07-19
Anticipated expiration: 2032-02-28
Also published as: WO2023159865A1

Abstract

The utility model discloses a magnetic resonance system, which comprises magnetic resonance equipment, a radio frequency shielding assembly and bearing equipment. The magnetic resonance equipment comprises a shell assembly with a radio frequency shielding function, wherein the shell assembly is provided with a detection cavity, and the detection cavity is provided with an inlet and an outlet. The radio frequency shielding assembly is connected with the shell assembly to form a radio frequency shielding space, the radio frequency shielding space is communicated with the detection cavity, and the radio frequency shielding assembly is provided with a first door and a first shielding door capable of opening and closing the first door. The bearing equipment is arranged in the radio frequency shielding space and comprises a bed board which can move relative to the magnetic resonance equipment, and the bed board enters and exits the detection cavity through an inlet and an outlet. The magnetic resonance system can be quickly assembled to form a radio frequency shielding space required by the magnetic resonance equipment, and the popularization and the use of the magnetic resonance equipment are facilitated.

Description

Magnetic resonance system

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a magnetic resonance system.

Background

Magnetic Resonance Imaging (MRI), a medical Imaging device, has taken an important position in the field of in vitro diagnosis, and also brings many benefits to medical progress.

In the related art, the magnetic resonance apparatus is easily subjected to external electromagnetic interference during operation, so that detection needs to be performed in a special shielded room space. However, the traditional shielding room has a long construction period, which is not beneficial to the popularization and application of the magnetic resonance equipment.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a magnetic resonance system which can be quickly assembled to form a radio frequency shielding space required by the use of magnetic resonance equipment and is beneficial to the popularization and the use of the magnetic resonance equipment.

The technical scheme is as follows:

according to a first aspect of the embodiments of the present invention, a magnetic resonance system is provided, which includes a magnetic resonance device, a radio frequency shielding assembly, and a carrying device, where the magnetic resonance device includes a housing assembly having a radio frequency shielding function, the housing assembly is provided with a detection cavity, and the detection cavity is provided with an inlet and an outlet; the radio frequency shielding assembly is connected with the shell assembly to form a radio frequency shielding space, the radio frequency shielding space is communicated with the detection cavity, the radio frequency shielding assembly is provided with a first door and a first shielding door, and the first shielding door is used for opening or closing the first door; the bearing equipment is arranged in the radio frequency shielding space and comprises a bed board which can move relative to the magnetic resonance equipment, and the bed board enters and exits the detection cavity through an inlet and an outlet.

The technical scheme provided by the embodiment of the utility model can have the following beneficial effects:

the magnetic resonance system can be transported to a placing position in a module mode, a radio frequency shielding space is formed by connecting the shell assembly with the radio frequency shielding assembly, the detection cavity of the magnetic resonance device is communicated with the radio frequency shielding space, and the bearing device can also be placed in the radio frequency shielding space. When the magnetic resonance equipment is used, the first shielding door is opened, so that a detected person can enter the radio frequency shielding space through the first door, then lie on the bed board and enter the detection cavity along with the bed board for detection. And when the first shielding door is closed, an operator can start the magnetic resonance equipment, and the magnetic resonance equipment is used for detecting the detected person so as to obtain the required image. Therefore, the magnetic resonance system can be quickly assembled to form a radio frequency shielding space required by the magnetic resonance equipment, a shielding room with a radio frequency shielding function does not need to be specially built, and the popularization and the use of the magnetic resonance equipment are facilitated.

The technical solution of the present invention is further explained below:

in one embodiment, the radio frequency shielding assembly further includes a second door opening for allowing the carrying device to enter and exit, and a second shielding door, the second door opening is disposed opposite to the entrance and exit, and the first door opening is disposed between the entrance and the exit and the second door opening.

In one embodiment, the carrier apparatus is slidably coupled to the radio frequency shielding assembly such that the carrier apparatus is movable relative to the detection chamber and into and out of the radio frequency shielded space through a second doorway for opening and closing the second doorway.

In one embodiment, the radio frequency shielding assembly comprises at least two shielding cases, each shielding case is provided with an accommodating space, at least one shielding case is connected with one end of the shell assembly in a sealing mode, at least one shielding case is connected with the other end of the shell assembly in a sealing mode, so that the accommodating space forms the radio frequency shielding space, the first door opening is formed in the shielding case, and the first shielding door can be movably arranged in the shielding cases.

In one embodiment, the rf shield assembly further includes an rf shield connector coupled between the shield and the housing assembly to form a sealed shield structure.

In one embodiment, the magnetic resonance apparatus further comprises a radio frequency coil disposed in the housing assembly and disposed around the detection chamber, a gradient coil disposed in the housing assembly and disposed around the radio frequency coil, and a magnet assembly for generating a main magnetic field disposed in the housing assembly and disposed around the gradient coil, the gradient coil being disposed between the magnet assembly and the radio frequency coil, the magnet assembly being disposed in the housing assembly and disposed around the gradient coil; the magnetic resonance system further comprises cabinet equipment, the cabinet equipment is arranged outside the radio frequency shielding space, and the cabinet equipment is provided with at least one of a control module for controlling the magnetic resonance equipment, a radio frequency power amplifier for connecting the radio frequency coil, a gradient power amplifier for connecting the gradient coil and a cooler at least for cooling the gradient coil.

In one embodiment, the radio frequency shielding assembly comprises an observation area with a radio frequency shielding function, wherein the observation area can observe the inside of the radio frequency shielding space; and/or the radio frequency shielding assembly comprises a filter plate with a radio frequency shielding function, and the filter plate is used for constructing a signal path between a radio frequency shielding space and the outside; and/or the magnetic resonance system further comprises a control panel, the control panel is at least in communication connection with the magnetic resonance equipment, and the control panel is arranged on the outer side of the radio frequency shielding assembly.

In one embodiment, the magnetic resonance apparatus further comprises a helium tube assembly disposed at least partially outside the radio frequency shielded space; and/or the magnetic resonance equipment also comprises equipment components with heating value lower than a preset value or without heating, and the equipment components are at least partially arranged outside the radio frequency shielding space.

In one embodiment, a first accommodating cavity arranged around the detection cavity, a vacuum cavity arranged around the first accommodating cavity and a second accommodating cavity arranged in the vacuum cavity are arranged in the shell assembly, the second accommodating cavity and the vacuum cavity are isolated from each other, and the second accommodating cavity is arranged around the first accommodating cavity; the magnetic resonance equipment further comprises a radio frequency coil, a gradient coil and a magnet part used for generating a main magnetic field, the radio frequency coil is arranged in the first accommodating cavity and surrounds the detection cavity, the gradient coil is arranged in the second accommodating cavity and surrounds the radio frequency coil, the gradient coil is arranged between the magnet part and the radio frequency coil, and the magnet part is arranged in the second accommodating cavity and surrounds the gradient coil.

In one embodiment, the magnetic resonance system further includes an electrical connector and a shock pad, the electrical connector is fixedly disposed on the housing assembly through the shock pad, one end of the electrical connector is electrically connected to the gradient coil, and the other end of the electrical connector forms an electrical connection portion on an outer side of the housing assembly.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

Brief description of the drawingsthe accompanying drawings, which form a part hereof, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model, and together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Figure 1 is a schematic diagram of a magnetic resonance system in one embodiment (with a first doorway in an open position).

Fig. 2 is a schematic diagram of the magnetic resonance apparatus shown in fig. 1.

Figure 3 is a diagrammatic illustration of the second portal of the magnetic resonance system of figure 1 in an open position.

Fig. 4 is a schematic illustration of the magnetic resonance system shown in fig. 1 in an operating state.

Fig. 5 is a schematic view of the carrying device shown in fig. 3 with the decoration hidden.

Figure 6 is a schematic half-section through the magnetic resonance apparatus shown in figure 2.

Fig. 7 is a schematic structural view of the shielding assembly shown in fig. 2.

Fig. 8 is a partial structural diagram of a housing assembly in an embodiment.

Description of reference numerals:

10. a magnetic resonance device; 100. a housing assembly; 110. a detection chamber; 111. an inlet and an outlet; 120. a first accommodating chamber; 130. a vacuum chamber; 140. a second accommodating cavity; 150. a housing; 151. a vacuum channel; 152. a plug-in part; 153. a socket joint part; 154. a clamping part; 155. a buckle part; 160. a sealing layer; 170. a sound absorbing layer; 180. a first connecting member; 190. a second connecting member; 101. an electrical connector; 102. a vibration damping pad; 200. a radio frequency coil; 300. a gradient coil; 400. a magnet; 500. a shim coil; 600. a shield; 610. a shield ring; 611. an annular gap; 612. an axial gap; 700. a support member; 20. a radio frequency shielding component; 21. a radio frequency shielded space; 22. a first doorway; 23. a first shield door; 24. a second doorway; 25. a second shield door; 26. a shield case; 26a, an accommodating space; 27. a radio frequency shield connection; 28. an observation area; 29. a filter plate; 201. a guide rail; 30. a load bearing device; 31. a bed board; 32. a mating member; 33. a lifting assembly; 34. a track support; 40. cabinet equipment; 50. a control panel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The conventional magnetic resonance apparatus, as a commonly used medical imaging apparatus, occupies an important position in the field of in vitro diagnosis, and also brings a lot of help for medical progress. The brand of the existing magnetic resonance equipment is various, so that the existing magnetic resonance equipment can be used for hospitals and/or physical examination institutions to select a lot of products, so that the existing magnetic resonance equipment is favored by hospitals and/or physical examination institutions, and the competitiveness of the existing magnetic resonance equipment is improved more and more by the attention of manufacturers of the magnetic resonance equipment. In magnetic resonance equipment products with similar functions or performances, the shorter the construction period of the radio frequency shielding space is, the more beneficial the popularization and the use of the magnetic resonance equipment are, and the more popular the radio frequency shielding space is in hospitals and/or physical examination institutions. Therefore, how to reduce the shorter the construction period of the radio frequency shielding space becomes a problem that manufacturers of magnetic resonance equipment pay more and more attention.

In the related art, the magnetic resonance apparatus is easily interfered by external electromagnetic interference during operation, so that the detection is required to be performed in a special shielding room space. However, the traditional shielding room has a long construction period, which is not beneficial to the popularization and application of the magnetic resonance equipment.

Based on this, the application provides a magnetic resonance equipment, can fast assembly form magnetic resonance equipment and use required radio frequency shielding space, is favorable to magnetic resonance equipment's using widely.

For a better understanding of the magnetic resonance apparatus of the present application, further description is provided below with reference to the accompanying drawings.

Fig. 1 to 4 are views showing the structure of a magnetic resonance system and a magnetic resonance apparatus thereof in some embodiments. Fig. 1 is a schematic structural diagram of a magnetic resonance system in an embodiment (a first doorway is in an open state). Fig. 2 is a schematic diagram of the magnetic resonance apparatus shown in fig. 1. Figure 3 is a diagrammatic illustration of the second portal of the magnetic resonance system of figure 1 in an open position. Fig. 4 is a schematic illustration of the magnetic resonance system shown in fig. 1 in an operating state.

As shown in fig. 1 to 2, in some embodiments of the present disclosure, a magnetic resonance system is provided, which includes a magnetic resonance apparatus 10, a radio frequency shielding assembly 20, and a carrying apparatus 30, wherein the magnetic resonance apparatus 10 includes a housing assembly 100 having a radio frequency shielding function, the housing assembly 100 is provided with a detection chamber 110, and the detection chamber 110 is provided with an inlet and an outlet 111; the radio frequency shielding assembly 20 is connected with the housing assembly 100 to form a radio frequency shielding space 21, the radio frequency shielding space 21 is communicated with the detection cavity 110, the radio frequency shielding assembly 20 is provided with a first door 22 and a first shielding door 23, and the first shielding door 23 is used for opening or closing the first door 22; the carrying device 30 is disposed in the rf shielding space 21, the carrying device 30 includes a table 31 movable relative to the magnetic resonance apparatus 10, and the table 31 enters and exits the detection chamber 110 through the entrance/exit 111.

This magnetic resonance system can divide the module to transport the locating position, through being connected of casing subassembly 100 and radio frequency shielding subassembly 20, forms radio frequency shielding space 21, and the detection chamber 110 and the radio frequency shielding space 21 intercommunication of magnetic resonance equipment 10, and bear equipment 30 and also can place in radio frequency shielding space 21, and then accomplish the construction in radio frequency shielding space 21 fast through the modularization equipment to make things convenient for magnetic resonance equipment 10 to put into use fast. When the magnetic resonance apparatus 10 is in use, the first shielding door 23 is opened, so that a person to be detected can enter the radio frequency shielding space 21 through the first door opening 22, and then lie on the bed plate 31 and enter the detection chamber 110 along with the bed plate 31 for detection. When the first screen door 23 is closed, the operator can start the magnetic resonance apparatus 10, and the subject is detected by the magnetic resonance apparatus 10 to obtain a desired image. Thus, the magnetic resonance system can be assembled quickly to form the radio frequency shielding space 21 required by the magnetic resonance equipment 10, and a shielding room with a radio frequency shielding function does not need to be specially built.

In addition, compare with traditional shielded room, the magnetic resonance system of this application make full use of magnetic resonance equipment 10's casing subassembly 100 is as the partly of radio frequency shielding space 21, is favorable to reducing the volume of radio frequency shielding space 21, reduces the consumptive material, and then is favorable to reduce cost. So, the magnetic resonance system of this application can fast assembly form magnetic resonance equipment 10 and use required radio frequency shielding space 21, and the equipment is nimble, is favorable to magnetic resonance equipment 10 to drop into to use fast, more can obtain hospital and/or the favor of physical examination mechanism, improves product competitiveness.

In addition to any of the above embodiments, as shown in fig. 1 to 4, in some embodiments, the radio frequency shielding assembly 20 further includes a second doorway 24 and a second shielding door 25 for allowing the carrying device 30 to enter and exit, the second doorway 24 is disposed opposite to the access opening 111, and the first doorway 22 is disposed between the access opening 111 and the second doorway 24. In this way, the magnetic resonance system has at least two doorways, and the second doorway 24 can be used to pull the carrying device 30 out of the rf shielding assembly 20, so that a person to be detected who is inconvenient to move lies on the bed plate 31 from the outside of the rf shielding assembly 20, and then pushes the person to be detected into the rf shielding space 21 through the second doorway 24, and can enter the detection cavity 110 along with the bed plate 31 for detection. When the first and

second shield doors

23 and 25 are closed, the operator can start the magnetic resonance apparatus 10 and inspect the subject by the magnetic resonance apparatus 10 to obtain a desired image. After the detection is completed, the second shielding door 25 can be opened again, and the carrying device 30 is moved out to the radio frequency shielding space 21, so that the detected person can leave conveniently.

In addition, the first doorway 22 is matched with the second doorway 24, so that the requirements of inspectors with different movement abilities are met, and the comfort level and the operation convenience of the inspectors are improved.

It should be noted that the specific implementation manner of the carrying device 30 entering and exiting the second doorway 24 can be various, for example, the carrying device 30 is driven by rollers to move, or the carrying device 30 is driven by sliding rails to move.

In some embodiments, carrier 30 is slidably coupled to RF shielded assembly 20 such that carrier 30 is movable relative to detection chamber 110 and into and out of RF shielded space 21 through second doorway 24. In this way, the bearing device 30 is slidably connected to the rf shielding assembly 20, so that the bearing device 30 can enter and exit the second door 24 along a predetermined track, so that the bed board 31 can smoothly enter and exit the detection chamber 110, thereby improving the consistency of multiple detections.

It should be noted that, there are various specific implementation manners of slidably connecting the carrier 30 and the rf shielding assembly 20, for example, the guide rail 201 and the guide part of the slide rail are used to implement the guiding of the movement of the carrier 30, or the hanger rail is used to drive the carrier 30 to move, or an AGV cart is used to move the carrier 30 (Automated Guided Vehicle, AGV).

As shown in fig. 3 and 5, in some embodiments, a guide rail 201 is disposed between the carrier 30 and the rf shielding assembly 20, and a fitting 32 slidably connected to the guide rail 201 is disposed on the other. In this way, the supporting device 30 can enter and exit the rf shielding space 21 along the predetermined direction by using the matching between the guide rail 201 and the matching element 32, which is easy to implement and is beneficial to reducing the implementation cost of the magnetic resonance system.

Specifically, the bottom of the radio frequency shielding assembly 20 is provided with a guide rail 201.

It should be noted that the carrier device 30 can be implemented by various conventional scanning bed devices.

As shown in fig. 5, in some embodiments, the carrying device 30 further has a lifting assembly 33 capable of lifting the bed board 31.

The upgrading component can be realized by adopting an electric control lifting device or a manual lifting device, and is not limited too much.

In addition, the movement of the bed plate 31 and the movement of the bearing device 30 may be implemented by an electric control horizontal moving device or a manual horizontal moving device, which is not limited herein.

In some embodiments, the bed plate 31 is divided into a horizontal movement portion and a vertical movement portion, the bed plate 31 is mounted on the rail bracket 34 and can move freely in a controlled state, and the rail bracket 34 is mounted with an electronic brake device, a photoelectric limit switch and a contact switch. When the bed board 31 needs to be operated to the farthest end, firstly, the horizontal moving part of the bed board 31 reaches a horizontal zero position, the electronic brake is released, the bed board 31 moves to a required position along the rail bracket 34, the electronic brake is activated, the bed board 31 is locked, at this time, the vertical moving part of the bed board 31 can work, the horizontal moving part is locked, and preparation before scanning is carried out. When the preparation work before scanning is finished, the patient is positioned on the bed, the brake is released at the moment, the bed plate 31 can approach the detection cavity 110 along the track support 34, when the position is reached, the brake is activated, when the vertical movement part of the bed plate 31 reaches the highest point, the horizontal movement part can move freely, all movement limit positions are controlled by the photoelectric gate and the contact switch, and the movement safety of the bed plate 31 is ensured.

Based on any of the above embodiments, as shown in fig. 1, fig. 3 and fig. 4, in some embodiments, the radio frequency shielding assembly 20 includes at least two shielding cases 26, the shielding cases 26 are provided with accommodating spaces 26a, at least one shielding case 26 is connected to one end of the housing assembly 100 in a sealing manner, at least one shielding case 26 is connected to the other end of the housing assembly 100 in a sealing manner, so that the accommodating spaces 26a form the radio frequency shielding space 21, the first door 22 is disposed on the shielding cases 26, and the first shielding door 23 is movably disposed on the shielding cases 26. In this way, at least two shielding cases 26 provided with the accommodating spaces 26a are matched with the housing assembly 100, so that the radio frequency shielding space 21 can be formed by fast sealing connection, and the modular assembly is facilitated.

The shield cover 26 may be made of a conductive material, or may be made by applying a metal coating or a composite metal sheet to a non-metal cover. Radio frequency shielding can be achieved.

Further, as shown in fig. 1, 3 and 4, in some embodiments, the rf shielding assembly 20 further includes an rf shielding connector 27, and the rf shielding connector 27 is connected between the shielding can 26 and the housing assembly 100 to form a sealed shielding structure. In this way, the shielding effect of the rf shielding space 21 is further improved by the rf shielding connecting member 27, so as to prevent the external magnetic field from entering the rf shielding space 21 through the connecting gap and affecting the detection quality of the magnetic resonance apparatus 10.

The rf shielding connector 27 can be implemented in various ways, for example, the rf shielding connector includes at least one of a conductive reed, a conductive cotton, a conductive gel, etc., and can make good contact with the shielding can 26 and the housing assembly 100 to meet the rf shielding requirement.

Based on any of the above embodiments, as shown in fig. 3 and 6, in some embodiments, the magnetic resonance apparatus 10 further includes a radio frequency coil 200, a gradient coil 300 and a magnet part for generating a main magnetic field, the radio frequency coil 200 is disposed in the housing assembly 100 and surrounds the detection chamber 110, the gradient coil 300 is disposed in the housing assembly 100 and surrounds the radio frequency coil 200, the gradient coil 300 is disposed between the magnet part and the radio frequency coil 200, and the magnet part is disposed in the housing assembly 100 and surrounds the gradient coil 300. The magnetic resonance system further comprises a cabinet device 40, the cabinet device 40 is disposed outside the radio frequency shielding space 21, and the cabinet device 40 is provided with at least one of a control module for controlling the magnetic resonance device 10, a radio frequency power amplifier for connecting the radio frequency coil 200, a gradient power amplifier for connecting the gradient coil 300, and a cooler for cooling at least the gradient coil 300. Therefore, other electronic devices which do not need to be subjected to radio frequency shielding or are easily influenced by the radio frequency coil 200, the gradient coil 300 or the magnet part can be arranged in the cabinet equipment 40 and arranged outside the radio frequency shielding space 21, so that the assembly is convenient, the occupation of the radio frequency shielding space 21 can be reduced, the size of the radio frequency shielding space 21 can be reduced sufficiently, and the cost is reduced.

In addition, at least one of the control module, the radio frequency power amplifier, the gradient power amplifier and the cooler is arranged outside the radio frequency shielding space 21, so that later maintenance or replacement is facilitated.

It should be noted that the rack device 40 may be implemented in various ways, such as loading with a chassis, or loading different functional devices with multiple racks.

In one example, the rack device 40 includes three racks, one for loading power supplies, rf power amplifiers, spectrometers, and the like, one for loading gradient power amplifiers, and one for loading water cooling systems and the like.

Based on any of the above embodiments, as shown in fig. 3 and 4, in some embodiments, the rf shielding assembly 20 includes an observation area 28 having an rf shielding function, and the observation area 28 can observe the inside of the rf shielding space 21. In this way, the operator can know the condition in the radio frequency shielding space 21 conveniently, so as to remind the detected person or control the magnetic resonance equipment 10 to stop.

The observation area 28 may be made of a light-transmitting member having a shielding function, such as a light-transmitting glass.

On the basis of any of the above embodiments, as shown in fig. 3 and 4, in some embodiments, the rf shielding assembly 20 includes a filter plate 29 having an rf shielding function, and the filter plate 29 is used for constructing a signal path between the rf shielding space 21 and the outside. In this way, the filter plate 29 can be used to construct a signal path between the rf shielding space 21 and the outside, and it is convenient to arrange related control devices in the rf shielding space 21.

Based on any of the above embodiments, as shown in fig. 3 and 4, in some embodiments, the magnetic resonance system further includes a control panel 50, the control panel 50 is at least connected to the magnetic resonance apparatus 10 in a communication manner, and the control panel 50 is disposed outside the radio frequency shielding assembly 20. In this way, the control panel 50 facilitates the interaction between the operator and the magnetic resonance system, and controls the operation of the magnetic resonance apparatus 10, the opening and closing of the first shield door 23, the movement of the top board 31, and the like.

Optionally, the control panel 50 includes a display for displaying operational information of the magnetic resonance system for facilitating interaction with an operator.

It should be noted that the control panel 50 can be implemented in various ways, including but not limited to an operation panel with a control function, such as a smart tablet, a computer, etc.

In some embodiments, the isolation of the rf shielded space 21 may be greater than 90 dB. In this way, the radio frequency shielding requirements required for the operation of different types of magnetic resonance apparatus 10 can be fully ensured.

As shown in fig. 2 and 6, in some embodiments, the magnetic resonance apparatus 10 includes a radio frequency coil 200, a gradient coil 300, and a magnet assembly 400 for generating a magnetic field. The housing assembly 100 is provided with a first accommodating cavity 120 surrounding the detection cavity 110, a vacuum cavity 130 surrounding the first accommodating cavity 120, and a second accommodating cavity 140 disposed in the vacuum cavity 130, wherein the second accommodating cavity 140 is isolated from the vacuum cavity 130, and the second accommodating cavity 140 surrounds the first accommodating cavity 120. At least a portion of the rf coil 200 is disposed within the first receiving chamber 120 and around the detection chamber 110. The gradient coil 300 is disposed within the second receiving cavity 140 and around the radio frequency coil 200. The magnet part 400 is disposed in the second receiving chamber 140 and around the gradient coil 300; wherein the gradient coil 300 is arranged between the magnet part 400 and the radio frequency coil 200.

In the magnetic resonance apparatus 10, during scanning, the gradient coil 300 is vibrated by the lorentz force in the magnetic field generated by the magnet unit 400, thereby generating operation noise. And this running noise receives vacuum cavity 130's isolation, has blocked the noise propagation way for this running noise is difficult for outwards diffusing from casing subassembly 100, and then can greatly reduce magnetic resonance equipment 10's noise, and then improves the detection experience by the person of examining, more can obtain hospital and the favor of physical examination mechanism, is favorable to improving product competitiveness.

Furthermore, it is understood that the magnet assembly 400 and the gradient coil 300 are disposed in the second receiving chamber 140, so that the assembly is easy after the modular assembly of the two. Meanwhile, the vacuum chamber 130 is used to separate the first accommodating chamber 120 from the second accommodating chamber 140, so that noise generated by the magnet part 400 and the gradient coil 300 can be isolated by the vacuum chamber 130, thereby blocking a noise propagation path and further effectively reducing the operation noise of the magnetic resonance apparatus 10.

It should be noted that the specific implementation manner of the magnet assembly 400 may be various, and includes one of the magnet assembly 400 or the superconducting magnet 400, which can generate a magnetic field.

In some embodiments, the magnet assembly 400 is used to generate a main magnetic field (B0 field).

It should be noted that the gradient coil 300 may be implemented in various ways, and may be used for sampling a sample to be measured.

In some embodiments, the gradient coil 300 is used to sample the sample under test at different positions, phases and frequencies in three-dimensional space and ultimately construct gradient spatial data.

It should be noted that the rf coil 200 can be implemented in various ways, and can be used for transmitting energy and detecting signals.

In some embodiments, the rf coil 200 includes an rf receiving coil disposed in the first containing cavity 120 and an rf transmitting coil disposed on the sample to be measured.

In other embodiments, the rf coil 200 has dual functions of transmitting and receiving, so that the sample under test does not need to be worn by an rf receiving coil.

In the disclosed embodiment, the radio frequency transmitting coil includes, but is not limited to, helmholtz, optimized maxwell, and solenoid type radio frequency transmitting coils.

Based on any of the above embodiments, as shown in figure 6, in some embodiments the magnetic resonance apparatus 10 further comprises shim coils 500 for improving the homogeneity of the magnetic field. The shim coil 500 may be provided on the outer circumferential side of the gradient coil 300, and the magnet member 400 may be provided on the outer circumferential side of the shim coil 500; the shim coils 500 may also be integrated within the gradient coil 300, to the extent not limiting.

In one embodiment, the magnet assembly 400 is a permanent magnet that can be used to generate a main magnetic field in a vertical (e.g., Y-direction) or horizontal (e.g., X-direction) direction, and the rf coil 200 is used to generate a B1 magnetic field perpendicular to the main magnetic field direction. In yet another embodiment, where the magnet assembly 400 is a superconducting magnet, it may be used to generate a main magnetic field in the Z-axis direction and the rf coil 200 is used to generate a B1 magnetic field perpendicular to the main magnetic field direction. But the disclosed embodiments are not so limited.

In order to improve the performance of the magnetic resonance imaging apparatus and improve the image quality, the smaller the mutual interference or influence between the gradient coil 300 and the radio frequency coil 200, the better. In addition to any of the above embodiments, as shown in fig. 6 and 7, in some embodiments, the magnetic resonance apparatus 10 further includes a shielding member 600, and the shielding member 600 is disposed on the housing assembly 100 and between the gradient coil 300 and the radio frequency coil 200. In this way, the performance of the magnetic resonance imaging apparatus can be improved and the image quality can be improved by using the shield 600.

As shown in fig. 7, in some embodiments, the shielding element 600 includes at least one shielding ring 610, each shielding ring 610 has at least one axial slit 612 along an axial direction and at least one annular slit 611 perpendicular to the axial direction, and the axial slit 612 penetrates through two ends of the first shielding ring 610.

The number of the annular slits 611 formed in the shield ring 610 may be one or more, and the number of the axial slits 612 formed may also be one or more. In one example, the shielding ring 610 has one or more annular slits 611 and one axial slit 612, but the embodiment of the present disclosure is not limited thereto.

In some embodiments, the material of the shielding ring 610 is a non-magnetic metal, including copper, aluminum, magnesium, zinc, etc.

When the shielding member 600 is applied to a magnetic resonance imaging apparatus, at least one shielding ring 610 is disposed between the radio frequency coil 200 and the gradient coil 300, and the eddy current loop of the gradient coil 300 is cut off by using the annular gap 611, so as to reduce the eddy current generated on the shielding member 600 by the gradient coil 300. The direction of the induced current of the radio frequency coil 200 in the corresponding shielding ring 610 can be changed by using the axial gap 612, so that the current on the shielding ring 610 and the current in the corresponding radio frequency coil 200 are in the same direction, the magnetic field strength in the radio frequency coil 200 can be further enhanced, and the attenuation of the magnetic field strength in the radio frequency coil 200 is avoided. In this manner, the shield 600 provides good shielding and enhances the performance of the rf coil 200.

Further, the magnetic resonance imaging apparatus integrated with the shield 600 does not need to increase the transmission power of the radio frequency coil 200 to improve the efficiency of the radio frequency coil 200, and can reduce the manufacturing cost and the operation cost of the magnetic resonance imaging apparatus.

In the disclosed embodiment, "annular gap 611" includes, but is not limited to, circular, elliptical, undulating annular, and the like. And may be configured in conjunction with the shape of the radio frequency coil 200 and the gradient coil 300.

In the disclosed embodiment, "axial gap 612" includes, but is not limited to, straight strips, curved, stepped, and the like. The straight-strip-shaped axial gap 612 can reduce the research and development design cost, is convenient to process and manufacture, can reduce the cost of the radio frequency module, and is favorable for reducing the manufacturing cost of the magnetic resonance imaging equipment.

In the embodiment of the present disclosure, at least one shielding ring 610 includes 1, 2, or more than 3, and may be specifically configured according to actual needs, and two adjacent shielding rings 610 are arranged in an insulating manner. For ease of understanding, two shielding rings 610 are described herein as an example, but the disclosed embodiments are not limited thereto.

In some embodiments, the shielding element 600 includes at least two shielding rings 610, and the at least two shielding rings 610 may be sequentially disposed around each other, so as to improve the shielding effect. The slits formed in the at least two shielding rings 610 may correspond in position, or do not correspond in position, which is not limited in the embodiment of the present disclosure. Fig. 7 illustrates a schematic structural diagram of a shielding element 600 according to some embodiments of the present disclosure. Here, the shielding member 600 includes two shielding rings 610, which is taken as an example for description, but the embodiments of the present disclosure are not limited thereto.

As shown in fig. 3, the shield 600 includes a first shield ring 610 and a second shield ring 610 disposed in insulation with the first shield ring 610. The first shielding ring 610 is disposed inside the second shielding ring 610 and closer to the radio frequency coil 200, but the positions of the first shielding ring 610 and the second shielding ring 610 are not limited in the embodiments of the present disclosure.

The first shielding ring 610 and the second shielding ring 610 may be insulated from each other in various ways, including but not limited to installation by an insulating ring, or coating with an insulating material.

In addition to any of the above embodiments, as shown in fig. 6, in some embodiments, the housing assembly 100 includes at least two housings 150, and the at least two housings 150 are connected to each other to form the vacuum chamber 130. Thus, the vacuum chamber 130 is formed by connecting at least two housings 150, so that the manufacturing flexibility of the vacuum chamber 130 is improved, and the manufacturing cost of the magnetic resonance apparatus 10 is reduced.

It should be noted that the specific implementation manner of "at least two housings 150 are connected to each other" may be various, including but not limited to screwing, riveting, welding, snapping, etc.

In one example, at least one of the housings 150 is interconnected to form an inner wall of the vacuum chamber 130, at least one of the housings 150 is interconnected to form an outer wall of the vacuum chamber 130, and a portion of the housing 150 forms a sidewall of the vacuum chamber 130.

As shown in fig. 6 and 8, in some embodiments, at least two of the housings 150 are spaced apart to form a set of vacuum channels 151, and two adjacent sets of vacuum channels 151 are sealed together to form the vacuum chamber 130. Thus, the vacuum channels 151 are formed by arranging at least two shells 150 at intervals, and the vacuum chambers 130 are formed by mutually splicing and sealing the vacuum channels 151, so that the vacuum chambers 130 are conveniently assembled in a modularized manner, and the assembly efficiency of the vacuum chambers 130 is further improved.

In one example, the vacuum chamber 130 is circular and is formed by four or five or more sets of vacuum channels 151 that are sealed together.

Further, as shown in fig. 8, in some embodiments, one of the two sets of vacuum channels 151 of the splice seal is provided with a socket 152, the other set of vacuum channels 151 is provided with a socket 153, and the socket 152 is inserted into the socket 153 and is fixedly connected. Therefore, the splicing part 152 and the sleeving part 153 are fixedly sleeved, so that the two adjacent groups of vacuum channels 151 are in butt joint sealing, the assembly is easy, and the assembly efficiency is improved.

Further, as shown in fig. 8, in some embodiments, the housing assembly 100 further includes a sealing layer 160, and the sealing layer 160 is sandwiched between the side wall of the inserting portion 152 and the side wall of the receiving portion 153; and/or the housing assembly 100 further includes a sound absorption layer 170, and the sound absorption layer 170 is disposed between the socket portion 153 and the inserting portion 152. In this way, the sealing layer 160 and/or the sound absorbing layer 170 further form the reliably sealed vacuum chamber 130, thereby reducing outward diffusion of noise generated by the magnetic resonance apparatus 10, further reducing operation noise of the magnetic resonance apparatus 10, and improving the detection experience of the subject.

In one example, the sealing layer 160 is annular and is sleeved outside the inserting portion 152, and the sound absorbing layer 170 is disposed between the free end of the sleeved portion 153 and the inserting portion 152. In this way, the sealing layer 160 and the sound absorbing layer 170 further form the reliably sealed vacuum chamber 130, and the sound absorbing layer 170 can passively absorb noise generated by the magnetic resonance device 10, thereby further reducing the operation noise of the magnetic resonance device 10 and improving the detection experience of the detected person.

It should be noted that, the specific implementation manner of the "two groups of vacuum channels 151 of the splicing seal" may be various, including but not limited to a screw joint seal, a rivet seal, a welding seal, a snap seal, and the like.

As shown in fig. 8, in some embodiments, the inserting portion 152 is provided with a locking portion 154, the sleeve portion 153 is provided with a buckling portion 155, and the inserting portion 152 is inserted into the sleeve portion 153, so that the locking portion 154 and the buckling portion 155 are buckled and fixed. In this way, the fixing connection of the inserting portion 152 to the socket portion 153 is realized by the fixing connection of the locking portion 154 and the locking portion 155, the sealing performance of the connection between the two can be improved by the sealing layer 160, and the noise reduction effect is improved by the sound absorption layer 170.

Of course, in other embodiments, the housing assembly 100 further includes a sealing layer 160, and the sealing layer 160 is disposed in the connection gap of the housing assembly 100. Thus, the sealing reliability of the vacuum chamber 130 can be improved, which is beneficial to ensuring the vacuum degree of the vacuum chamber 130.

And/or, in some embodiments, the housing assembly 100 further comprises a sound absorbing layer 170, the sound absorbing layer 170 being disposed in the connecting gap of the housing assembly 100. As such, the noise reduction effect of the magnetic resonance apparatus 10 can be further enhanced by the sound absorption layer 170.

It should be noted that the sealing layer 160 can be implemented in various ways, including but not limited to silicone, rubber, etc.

In addition, the sound absorption layer 170 may be implemented in various ways, including but not limited to sound absorption cotton.

In addition to any of the above embodiments, as shown in fig. 6, in some embodiments, the magnetic resonance apparatus 10 further includes a support member 700 and a first connector 180, a portion of the support member 700 is disposed outside the housing assembly 100, a portion of the support member 700 is disposed in the second accommodating cavity 140 and is fixedly connected to the magnet member 400, and the first connector 180 is disposed in the second accommodating cavity 140 and connects the magnet member 400 and the housing assembly 100. In this way, the support member 700 is partially disposed outside the housing assembly 100 to form a support leg, and the support member 700 is used to support the magnet member 400, so that the magnet member 400 can reliably suspend in the second accommodating chamber 140, and the first connector 180 is used to further connect the housing assembly 100 and the magnet member 400, so that the housing assembly 100 can be reliably supported by the housing assembly 100 and the magnet member 400.

Optionally, the support member 700 is in sealing engagement with the housing assembly 100.

It should be noted that the specific implementation manner of the supporting member 700 can be various, including but not limited to pins, supporting rods, and supporting seats, etc.

In addition to any of the above embodiments, as shown in fig. 6, in some embodiments, the magnetic resonance apparatus 10 further includes a second connection 190, and the gradient coil 300 is fixedly connected to the magnet assembly 400 through the second connection 190. In this way, the gradient coil 300 can be securely fixed to the magnet member 400 by the second connecting member 190, and the magnet member 400 can support the gradient coil 300, thereby reducing the contact area between the gradient coil 300 and the magnet member 400 and further reducing the transmission of vibration to the magnet member 400.

It should be noted that the first connecting element 180 and the second connecting element 190 can be implemented in various ways, including but not limited to a fixing rod, a fixing plate, etc.

On the basis of any of the above embodiments, as shown in fig. 6, in some embodiments, the magnetic resonance apparatus 10 further includes an electrical connector 101 and a damping pad 102, the electrical connector 101 is fixedly mounted on the housing assembly 100 through the damping pad 102, one end of the electrical connector 101 is electrically connected to the gradient coil 300, and the other end of the electrical connector 101 forms an electrical connection portion outside the housing assembly 100. In this manner, vibration energy generated when the gradient coil 300 operates can be absorbed by the vibration-damping pad 102 being engaged with the electrical connector 101, so that vibration of the housing assembly 100 can be reduced. Meanwhile, elements such as a gradient power amplifier may be disposed outside the housing assembly 100 using the electrical connector 101, and connected to the gradient coil 300 using the electrical connector 101.

The electrical connector 101 may be implemented in various ways, and may be electrically connected to the gradient coil 300 by a component such as a gradient power amplifier. The electrical connector 101 includes but is not limited to electrical connectors such as electrical plugs, Type-A connectors, Type-B connectors, Type-C connectors, Lightning connectors, and the like; or the Type-A interface, the Type-B interface, the Type-C interface, the Lightning interface and the like; or a cable such as a coaxial cable.

In addition to any of the above embodiments, in some embodiments, the magnetic resonance apparatus 10 further includes a helium gas tube assembly (not shown) disposed at least partially outside the radio frequency shielded space 21. Thus, the helium pipe assembly is arranged outside the radio frequency shielding space 21, so that the maintenance is convenient, and the occupation of the radio frequency shielding space 21 is reduced. In addition, helium gas leakage in the radio frequency shielding space 21 can be avoided, and safety is improved. When the superconducting magnet 400 is used in the magnetic resonance apparatus 10, the cooling effect can be improved by cooling with helium gas.

On the basis of any of the above embodiments, in some embodiments, the magnetic resonance apparatus 10 further includes an apparatus component (not shown) which generates heat below a preset value or does not generate heat, and the apparatus component is at least partially disposed outside the radio frequency shielding space 21. Therefore, the device components with heating values lower than the preset value or without heating are arranged outside the radio frequency shielding space 21, so that the maintenance is facilitated, and the occupation of the radio frequency shielding space 21 is reduced.

The equipment components include, but are not limited to, cryogenic components, coolant or coolant gas supply components, and the like.

In addition to any of the above embodiments, in some embodiments, the magnetic resonance system further includes an active noise reduction component (not shown), which is disposed in the radio frequency shielded space 21. Therefore, the active noise reduction part can further reduce the noise in the radio frequency shielding space 21, provides stronger comfortable feeling and relaxing feeling for the inspected person, and improves the detection experience.

It should be noted that various embodiments of the active noise reduction features are possible. For example, a sound receiving device (microphone, etc.) is disposed at a noise source of the magnetic resonance apparatus 10, and a sound generating device (speaker, etc.) is disposed in the radio frequency shielding space 21, and the sound generating device can generate corresponding audio frequency according to the noise frequency to realize active noise reduction.

In addition to any of the above embodiments, in some embodiments, the magnetic resonance system further comprises a light emitting element (not shown) disposed in the radio frequency shielding space 21. Therefore, a comfortable light environment is created by utilizing the luminescence of the luminous piece, a stronger comfortable feeling and a relaxing feeling are provided for a person to be inspected, and the detection experience is improved.

It should be noted that the specific implementation of the light emitting element can be various, including but not limited to LED lamp, atmosphere lamp, etc.

It should be noted that the "guide rail 201" may be a part of the radio frequency shielding assembly 20, that is, the "guide rail 201" is integrally formed with other parts of the radio frequency shielding assembly 20, such as the shielding can 26 "; the "rail 201" may be manufactured separately from a separate member that is separable from other parts of the "rf shield assembly 20, such as the shield 26", and may be integrated with other parts of the "rf shield assembly 20, such as the seal.

Equivalently, the "body" and the "certain part" can be parts of the corresponding "component", i.e., the "body" and the "certain part" are integrally manufactured with other parts of the "component"; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expressions "a certain body" and "a certain part" in the present invention are only one embodiment, and are not intended to limit the scope of the present invention for reading convenience, and the present invention should be construed as equivalent technical solutions if the features and the effects described above are included.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, removably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model.

Claims

1. A magnetic resonance system, comprising:

the magnetic resonance equipment comprises a shell assembly with a radio frequency shielding function, wherein the shell assembly is provided with a detection cavity, and the detection cavity is provided with an inlet and an outlet;

the radio frequency shielding assembly is connected with the shell assembly to form a radio frequency shielding space, the radio frequency shielding space is communicated with the detection cavity, the radio frequency shielding assembly is provided with a first door and a first shielding door, and the first shielding door is used for opening or closing the first door; and

the bearing equipment is arranged in the radio frequency shielding space and comprises a bed board which can move relative to the magnetic resonance equipment, and the bed board enters and exits the detection cavity through the inlet and the outlet.

2. The magnetic resonance system of claim 1, wherein the radio frequency shielding assembly further includes a second door opening for the carrying device to enter and exit, and a second shielding door, the second door opening is disposed opposite to the entrance and exit, the first door opening is disposed between the entrance and exit and the second door opening, and the second shielding door is configured to open and close the second door opening.

3. The system of claim 2, wherein the carrier device is slidably coupled to the rf shield assembly such that the carrier device is movable relative to the detection chamber and into and out of the rf shield space through the second door.

4. The magnetic resonance system of claim 1, wherein the rf shielding assembly includes at least two shielding cases, the shielding cases have an accommodating space, at least one of the shielding cases is connected to one end of the housing assembly in a sealing manner, at least one of the shielding cases is connected to the other end of the housing assembly in a sealing manner, so that the accommodating space forms the rf shielding space, the first door opening is disposed in the shielding case, and the first shielding door is movably disposed in the shielding case.

5. The system of claim 4, wherein the radio frequency shield assembly further comprises a radio frequency shield connector connected between the shield and the housing assembly to form a sealed shield structure.

6. The system of claim 1, further comprising a radio frequency coil disposed in the housing assembly and around the detection chamber, a gradient coil disposed in the housing assembly and around the radio frequency coil, and a magnet assembly for generating a main magnetic field, the gradient coil disposed between the magnet assembly and the radio frequency coil, the magnet assembly disposed in the housing assembly and around the gradient coil; the magnetic resonance system still includes rack equipment, rack equipment set up in the outside in radio frequency shielding space, just rack equipment is equipped with and is used for control magnetic resonance equipment's control module, is used for connecting the radio frequency power amplifier of radio frequency coil, be used for connecting the gradient power amplifier of gradient coil and at least be used for cooling at least one kind in the cooler of gradient coil.

7. The system of claim 1, wherein the radio frequency shield assembly includes a radio frequency shield enabled viewing zone that enables viewing of an interior of the radio frequency shielded space; and/or the radio frequency shielding assembly comprises a filter plate with a radio frequency shielding function, and the filter plate is used for constructing a signal path between the radio frequency shielding space and the outside; and/or, the magnetic resonance system still includes control panel, control panel at least with magnetic resonance equipment communication connection, control panel set up in the outside of radio frequency shielding subassembly.

8. The system of claim 1, wherein the magnetic resonance apparatus further comprises a helium tube assembly disposed at least partially outside the radio frequency shielded space; and/or the magnetic resonance equipment also comprises equipment components with heating value lower than a preset value or without heating, and the equipment components are at least partially arranged outside the radio frequency shielding space.

9. The system according to any one of claims 1 to 8, wherein a first accommodating chamber is provided in the housing assembly to surround the detection chamber, a vacuum chamber is provided to surround the first accommodating chamber, and a second accommodating chamber is provided in the vacuum chamber, the second accommodating chamber is isolated from the vacuum chamber, and the second accommodating chamber is provided to surround the first accommodating chamber; the magnetic resonance equipment still includes radio frequency coil, gradient coil and is used for producing the magnet part of main magnetic field, radio frequency coil set up in the first intracavity that holds, and encircle detect the chamber setting, gradient coil set up in the second holds the intracavity, and encircles radio frequency coil sets up, gradient coil set up in magnet part with between the radio frequency coil, magnet part set up in the second holds the intracavity, and encircles gradient coil sets up.

10. The mrt system of claim 9, further comprising an electrical connector and a shock pad, wherein the electrical connector is fixed to the housing assembly through the shock pad, and one end of the electrical connector is electrically connected to the gradient coil, and the other end of the electrical connector forms an electrical connection outside the housing assembly.