An electromagnetic shielding cabin and a magnetic resonance system having the same

Abstract

The present invention provides an electromagnetic shielding cabin and a magnetic resonance system having the electromagnetic shielding cabin. The electromagnetic shielding cabin comprises: a shielding track; a shielding cover, which is slidably arranged on the shielding track, and a sliding shielding structure is provided between the shielding cover and the shielding track to attenuate or shield electromagnetic waves; a docking shielding interface is provided at the first opening end of the shielding cover to be shielded and connected with the magnetic resonance body; a shielding door, which is rotatably arranged and connected to the second opening end of the shielding cover, and an elastic shielding structure is provided on the end face of the second opening end to make conductive contact between the shielding door and the shielding cover when the shielding door is closed. The present invention forms a shielding cavity by enclosing the shielding door and the shielding cover to provide a good shielding environment for magnetic resonance, so as to ensure that the magnetic resonance obtains excellent imaging and provide a reliable basis for treatment.

Description

Technical Field

[0001] The present invention relates to the field of magnetic resonance technology, and in particular to an electromagnetic shielding cabin and a magnetic resonance system having the electromagnetic shielding cabin. Background Art

[0002] Magnetic resonance imaging signals are very susceptible to interference from external electromagnetic signals, so they must be installed in an electromagnetic shielding environment to achieve the best imaging effect.

[0003] Existing shielding usually adopts the method of splicing metal plates, and the seams that are not often opened are welded, crimped, etc.; when crimping is used, in order to achieve a good shielding effect, the crimping surface needs to be padded with elastic shielding material and ensure sufficient crimping, and in order to prevent the increase of resistance caused by oxidation of the metal plate surface, thereby causing the shielding effect to deteriorate, the metal plate surface needs to be treated with anti-oxidation, and some special environments require the selection of stainless steel as the shielding material; the pressure application method usually uses inclined surface pressure, which is laborious to open and difficult to open manually, and the spring leaf is easily damaged and needs to be replaced frequently; other methods: such as pneumatic, hydraulic, and electric clamping, have complex structures, high costs, and low reliability.

[0004] Therefore, the current shielding room has a bulky structure, is inconvenient to operate, and cannot be moved. Summary of the invention

[0005] In view of this, the present invention proposes an electromagnetic shielding cabin and a magnetic resonance system having the electromagnetic shielding cabin, aiming to solve the problems that the existing shielding room has a bulky structure, is inconvenient to operate, and cannot be moved.

[0006] On the one hand, the present invention proposes an electromagnetic shielding cabin, which includes: a shielding track; a shielding cover, which is slidably arranged on the shielding track, and a sliding shielding structure is provided between the shielding cover and the shielding track to attenuate or shield electromagnetic waves; a first opening end of the shielding cover is provided with a docking shielding interface for shielding connection with a magnetic resonance body; a shielding door, which is rotatably arranged and connected to the second opening end of the shielding cover, so as to form a shielding cavity between the shielding door, the shielding cover and the magnetic resonance body when the shielding door is closed.

[0007] Furthermore, in the above-mentioned electromagnetic shielding cabin, the shielding cover comprises: a plurality of telescopic shielding segments, which are sequentially covered on the shielding rail and at least one segment is slidably connected to the shielding rail, and a shielding docking structure is provided between any two adjacent telescopic shielding segments to shield or attenuate electromagnetic waves when the two adjacent telescopic shielding segments are docked.

[0008] Furthermore, in the above-mentioned electromagnetic shielding cabin, the shielding docking structure includes: a plurality of groove structures, which are arranged on one of the two adjacent telescopic shielding segments; a plurality of protrusion structures, which are arranged on the other of the two adjacent telescopic shielding segments; each of the protrusion structures is arranged in a one-to-one correspondence with the groove structure, and when the two adjacent telescopic shielding segments are docked, the protrusion structure is inserted into its corresponding groove structure, and a first gap channel connected to the groove structure and the protrusion structure is provided along the inner wall of the groove structure, which is used to refract and reflect the electromagnetic wave to achieve attenuation of the electromagnetic wave.

[0009] Furthermore, in the above-mentioned electromagnetic shielding cabin, the shielding docking structure includes: a first docking interface, which is arranged on the end of an outer telescopic shielding segment of two adjacent telescopic shielding segments away from the shielding track, and an extrusion structure is provided on the first docking interface; a second docking interface, which is arranged on the end of an inner telescopic shielding segment of two adjacent telescopic shielding segments close to the shielding track, and a spring is provided on the second docking interface, and when the second docking interface is docked with the first docking interface, the extrusion structure presses against the spring to compress the spring, so that the spring is in conductive contact with the extrusion structure to shield electromagnetic waves.

[0010] Furthermore, in the above-mentioned electromagnetic shielding cabin, the sliding docking structure includes: a plurality of sliding grooves arranged side by side, which are arranged on the shielding rail; a plurality of sliding protrusions, which are arranged on the shielding cover and correspond one to one to the sliding grooves, and the sliding protrusions can be slidably arranged in their corresponding sliding grooves, and the clearance between the sliding grooves and the sliding protrusions is matched to refract and reflect the electromagnetic waves to achieve attenuation of the electromagnetic waves.

[0011] Furthermore, in the above-mentioned electromagnetic shielding cabin, the sliding groove is a straight groove structure, an inverted T-shaped groove structure or a dovetail groove structure.

[0012] Furthermore, in the electromagnetic shielding cabin, the shielding cover is provided with an observation window.

[0013] Furthermore, in the above electromagnetic shielding cabin, the observation window comprises: at least two layers of transparent panels; wherein a shielding net is provided between any two adjacent layers of the transparent panels.

[0014] Furthermore, in the electromagnetic shielding cabin, a gas spring is provided between the shielding door and the shielding cover to drive the shielding door to open or close and to support the shielding door.

[0015] The electromagnetic shielding cabin provided by the present invention can adjust the position of the shielding cover by means of a shielding cover that is slidably arranged on a shielding track. It can not only be opened so that there is an operating space between the shielding cover and the magnetic resonance body, so that the radio frequency coil can be positioned, fixed, and the object to be detected can be placed in the operating space, but can also be moved to the side adjacent to the magnetic resonance body to reduce the overall length of the shielding cover and reduce the occupied space during movement; the shielding door arranged at the second opening end of the shielding cover can enable the object to be detected to enter and exit the magnetic resonance system, and the shielding cover can be used to form a shielding cavity, which can fully provide a good shielding environment for magnetic resonance, so as to ensure that the magnetic resonance obtains excellent imaging and provide a reliable basis for treatment, and there is no need to build a shielding room outside, so it can be used anywhere, which is convenient for the movement of the magnetic resonance system; the setting of the sliding shielding structure and the docking shielding interface can attenuate or shield electromagnetic waves, and ensure the shielding efficiency of the shielding cavity. The electromagnetic shielding cabin has a simple and compact structure, is easy to operate, can be moved with the magnetic resonance system, and solves the problems of the existing shielding room having a large structure, inconvenient operation, and cannot be moved.

[0016] On the other hand, the present invention further provides a magnetic resonance system, on which the above-mentioned electromagnetic shielding cabin is provided.

[0017] Since the electromagnetic shielding cabin has the above-mentioned effects, the magnetic resonance system having the electromagnetic shielding cabin also has corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 A schematic diagram of the structure of a magnetic resonance system provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of an electromagnetic shielding cabin provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure between the shielding door and the shielding cover provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the structure of a front shielding section provided in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of a rear shielding section provided in an embodiment of the present invention;

[0024] Figure 6A schematic diagram of the structure of the shielding docking structure provided by an embodiment of the present invention;

[0025] Figure 7 Another structural schematic diagram of the shielding docking structure provided by an embodiment of the present invention;

[0026] Figure 8 for Figure 7 A schematic diagram of the structure of the middle shield docking structure located at the docking position;

[0027] Fig. 9 A schematic diagram of the structure of an observation window provided in an embodiment of the present invention;

[0028] Fig.10 A schematic diagram of the structure of two sliding docking structures provided in an embodiment of the present invention;

[0029] Fig.11 Another structural schematic diagram of the arrangement of two sliding docking structures provided by an embodiment of the present invention;

[0030] Fig.12 A schematic structural diagram of a sliding docking structure provided by an embodiment of the present invention;

[0031] Fig.13 Another structural schematic diagram of the sliding docking structure provided by an embodiment of the present invention;

[0032] Fig.14 A schematic diagram of the structure between the front shielding section and the shielding track provided in an embodiment of the present invention;

[0033] Fig.15 for Fig.14 A partial enlarged view of the middle part;

[0034] Fig.16 A schematic diagram of the structure between the rear shielding section and the shielding track provided in an embodiment of the present invention;

[0035] Fig.17 for Fig.16 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0036] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] Electromagnetic shielding cabin embodiment:

[0038] See also Figures 1 to 3 , which shows the preferred structure of the electromagnetic shielding cabin provided by the embodiment of the present invention. As shown in the figure, the electromagnetic shielding cabin comprises: a shielding track 1, a shielding cover 2 and a shielding door 3; wherein,

[0039] The shielding cover 2 is slidably disposed on the shielding track 1, and a sliding shielding structure 4 is disposed between the shielding cover 2 and the shielding track 1 to attenuate or shield electromagnetic waves; the first opening end of the shielding cover 2 (such as Figure 1 The shielding cover 2 is provided with a docking shielding interface 5 at the right end (shown in the figure) for shielding connection with the magnetic resonance body 6. Specifically, the shielding cover 2 can be a U-shaped structure, which can be covered on the bed board (not shown in the figure) to scan and shield the object to be detected 7 carried on the bed board; the shielding cover 2 can be slidably arranged on the shielding track 1 so that the position can be adjusted along the lateral direction of the magnetic resonance system, that is, the direction in which the object to be detected 7 is set, for example, it can be slid to a position of contacting the magnetic resonance body 6, so that the shielding cover and the magnetic resonance body 6 are shielded and connected through the docking shielding interface 5. In order to facilitate the slidable connection between the shielding cover 2 and the shielding track 1, preferably, a sliding structure is provided between the shielding cover 2 and the shielding track 1 to achieve the support of the shielding cover 2 and the sliding of the shielding cover 2; further preferably, the sliding structure can be a slide rail or a roller.

[0040] The shielding door 3 is rotatably arranged and connected to the second opening end (such as Figure 1The left end of the figure is used to enclose the shielding door 3, the shielding cover 2 and the magnetic resonance body 6 to form a shielding cavity when the shielding door is closed. Specifically, the shielding door 3 can be opened in an upward flipping manner, so that after the shielding door 3 is opened, the object to be detected 6 enters the shielding cavity from the second opening end of the shielding cover 2 for scanning and detection; preferably, a gas spring 8 can be provided between the shielding door 3 and the shielding cover 2 to drive the shielding door 3 to open or close and to support the shielding door 3. The setting of the gas spring 8 can make the shielding door tight when closed and automatically open when opened. The shielding door 3 and the shielding cover 2 can also be hinged by hydraulic hinges so as to be fixed at any angle; preferably, an elastic shielding structure (not shown in the figure) is provided on the end face of the second opening end to make the shielding door 3 close when closed. There is conductive contact between the door 3 and the shielding cover 2 to ensure the shielding effect of the shielding cavity; of course, the shielding door 3 and the shielding cover 2 can also achieve shielding or attenuation of electromagnetic waves through other structures. For example, the second opening end of the shielding cover 2 can be provided with a plurality of cavities arranged side by side along the thickness direction of the shielding cover 2. The shielding door 3 is provided with a plurality of protrusions, which are arranged corresponding to the cavities. The protrusions can be inserted into the cavities. The plurality of cavities arranged side by side are not connected to each other, but are only connected at the openings of the cavities. When the shielding door 3 is closed, the protrusions are inserted into the corresponding cavities from the openings at the top of the cavities to form a maze-like structure. The electromagnetic waves are attenuated through multiple layers of continuous refraction and reflection, thereby meeting the shielding efficiency requirements. In order to facilitate the opening and closing of the shielding door 3, preferably, the side of the shielding door 3 facing away from the shielding cover 2 (such as Figure 1 A flip handle 31 is provided on the left side (shown).

[0041] In this embodiment, the docking shielding interface 5 and the magnetic resonance body 6 can be electrically connected through a spring sheet; of course, other methods are also possible, for example, the docking shielding structure 5 can include a plurality of clamping protrusions arranged side by side along the thickness direction of the shielding cover 2, which can be inserted into the corresponding clamping grooves of the magnetic resonance body 6, and the plurality of clamping grooves arranged side by side are not connected, but only connected at the opening of the clamping groove; when the shielding cover 2 is docked with the magnetic resonance body 6, the clamping protrusion is inserted into the corresponding clamping groove from the opening at the top of the clamping groove to form a labyrinth shielding structure, and the electromagnetic wave is attenuated through multiple layers of continuous refraction and reflection, thereby meeting the shielding efficiency requirements. Of course, the docking shielding structure 5 can also include a plurality of clamping grooves arranged side by side along the thickness direction of the shielding cover 2, and the clamping protrusion is arranged on the magnetic resonance body 6.

[0042] Continue to see Figure 1 to Figure 2 , Figures 4 to 5The shielding cover 2 includes: a plurality of telescopic shielding segments 21; wherein each telescopic shielding segment 21 is sequentially covered on the shielding track 1 and at least one segment is slidably connected to the shielding track 1, and a shielding docking structure 22 is provided between any two adjacent telescopic shielding segments 21, which is used to shield or attenuate electromagnetic waves when the two adjacent telescopic shielding segments 21 are docked.

[0043] Specifically, the telescopic shielding segment 21 can be at least two segments, and each segment of the telescopic shielding segment 21 can be sequentially covered from the inner side close to the shielding track 1 to the outer side to form a multi-layer structure. At the same time, at least one segment of the telescopic shielding segment 21 is slidably connected to the shielding track 1 to adjust the position of the telescopic shielding segment 21 and the telescopic length of the multiple segments of the telescopic shielding segment 21, for example, it can be retracted to one telescopic shielding segment 21, such as Figure 2 As shown, there is an operating space between each segment of the telescopic shielding segment 21 and the magnetic resonance body 6, and then the radio frequency coil is positioned, fixed, and the object to be detected 7 is placed in the operating space. Of course, it can also be moved as a whole to the side adjacent to the magnetic resonance body 6 to reduce the overall length of the shielding cover 2 and reduce the space occupied during movement. At the same time, it can be extended so that the segments are docked and the cover is arranged above the shielding track 1 to shield electromagnetic waves. A shielding docking structure 22 is provided between any two adjacent telescopic shielding segments 21, so that when the two adjacent telescopic shielding segments 21 are extended to the corresponding ports of the two adjacent telescopic shielding segments 21 for docking, the shielding docking structure 22 shields or attenuates the electromagnetic waves at the connection between the two adjacent telescopic shielding segments 21. In order to facilitate the sliding of the telescopic shielding segment 21, preferably, a sliding handle 212 can be provided on the outer wall of the telescopic shielding segment 21. Among them, the inner telescopic shielding segment is arranged close to the shielding track in two adjacent telescopic shielding segments 21, and the outer telescopic shielding segment is arranged away from the shielding track. The inner telescopic shielding segment can be partially arranged in the cavity surrounded by the outer telescopic shielding segment and the shielding track 1, and of course it can also be separated.

[0044] It should be noted that, during specific implementation, the number of segments of the telescopic shielding segment 21 may also be determined according to specific circumstances, and this embodiment does not impose any limitation thereto.

[0045] For example, Figure 1 and Figure 2 The shielding cover 2 shown includes four telescopic shielding sections 21 , namely: a rear shielding section 2102 and a front shielding section 2101 disposed on the outside, both of which are slidably connected to the shielding track 1 . Figure 1 The front shielding section 2101 is shown to be disposed close to the magnetic resonance body 6. Figure 3The right end of the front shielding segment 2101 shown is provided with a first interface 21011, which serves as a docking shielding interface 5, so that when sliding to the docking position of the magnetic resonance body 6, the first interface 21011 is shielded and connected to the magnetic resonance body 6. The shielding connection in this embodiment can be a labyrinth shielding structure formed by a plurality of grooves and protrusions, so that the electromagnetic waves are attenuated through multiple layers of continuous refraction and reflection, thereby meeting the shielding effectiveness requirements; the left end of the front shielding segment 2101 is provided with a second interface 21012, and the front shielding segment 2101 can be a shielding plate for connecting the first interface 21011 and the second interface 21012. Figure 4 The right end of the rear shielding segment 2102 shown is provided with a third interface 21021, which together with the second interface 21012 serves as a shielding docking structure 22 to perform a shielding connection between the front shielding segment 2101 and the rear shielding segment 2102; the left end of the rear shielding segment 2102 may be provided with a fourth interface 21022 for connecting to the shielding door 3; the rear shielding segment 2102 may be a shielding plate for connecting the third interface 21021 and the fourth interface 21022.

[0046] In one embodiment of the present invention, see Figures 3 to 6 The shielding docking structure 22 includes: a plurality of groove structures 221 and a protrusion structure 222; wherein, the plurality of groove structures 221 are arranged on one of the two adjacent telescopic shielding segments 21; the plurality of protrusion structures 222 are arranged on the other of the two adjacent telescopic shielding segments 21; each protrusion structure 222 is arranged in a one-to-one correspondence with the groove structure 221, and when the two adjacent telescopic shielding segments 21 are docked, the protrusion structure 222 is correspondingly inserted into its corresponding groove structure 221, and a first gap channel 223 connected to the groove structure 221 and the protrusion structure 222 is provided along the inner wall of the groove structure 221, so as to refract and reflect the electromagnetic wave to achieve the attenuation of the electromagnetic wave.

[0047] Specifically, in this embodiment, a plurality of groove structures 221 are arranged on the outer telescopic shielding segment far away from the shielding track 1 of two adjacent telescopic shielding segments 21; a plurality of protrusion structures 222 are arranged on the inner telescopic shielding segment close to the shielding track 1 of the two adjacent telescopic shielding segments 21; each groove structure 221 can be arranged along the thickness direction of the outer telescopic shielding segment (such as Figure 5 The protrusion structure 222 can be arranged in a side-by-side manner along the thickness direction of the inner telescopic shielding section (such as the vertical direction shown in FIG. 1 ), and each groove structure 221 is closed at one end and has an opening at the other end; Figure 5The outer telescopic shielding section and the inner telescopic shielding section are connected to each other (in the vertical direction shown in the figure), and each protrusion structure 222 can be arranged at intervals, and they are matched with the groove structure 221 and the number is the same. When the outer telescopic shielding section and the inner telescopic shielding section are connected, the protrusion structure 222 is inserted into the groove structure 221 from the opening of the groove structure 221; the corresponding groove structure 221 and the protrusion structure 222 are provided with a connected first gap channel 223 along the inner wall of the groove structure 221, and each first gap channel 223 is connected to form an electromagnetic wave refraction and reflection channel. The electromagnetic wave enters each first gap channel 223 at the connection position of the telescopic shielding section and is continuously refracted and reflected to attenuate the energy. After the attenuation effect of the multiple layers of the first gap channel 223, the shielding effectiveness requirements of the electromagnetic shielding are achieved. Preferably, the groove structure 221 is filled with absorbing material, which can further improve the ability to absorb electromagnetic waves and improve the shielding effect. Among them, the number of protrusion structures 222 and groove structures 221 can be changed according to the environment and the intensity of the electromagnetic signal in the environment. To facilitate the separation between the ends of two adjacent telescopic shielding segments 21, preferably, the groove structure 221 is a straight groove structure, so that the protruding structure 222 can be inserted into the groove structure 221 or detached from the groove structure 221 as the telescopic shielding segment 21 moves. Figure 6 In the figure, the left arrow indicates the sliding direction of the outer telescopic shielding segment, and the right arrow indicates the sliding direction of the inner telescopic shielding segment.

[0048] For example, the third interface 21021 may be a plurality of groove structures opening toward the left side, and the second interface 21012 may be a plurality of protrusion structures extending toward the right, so that when the front shielding segment 2101 and the rear shielding segment 2102 slide in opposite directions, that is, the front shielding segment 2101 moves to the right (relative to the left side). Figure 2 When the rear shielding section 2102 slides to the left and slides to the point where the third interface 21021 is docked with the second interface 21012, the protruding structure of the second interface 21012 is inserted into the groove structure of the third interface 21021.

[0049] In another embodiment of the present invention, see Figures 7 and 8The shielding docking structure 22 includes: a first docking interface 224 and a second docking interface 225; wherein the first docking interface 224 is arranged on the end of the outer telescopic shielding segment away from the shielding track 1 in the two adjacent telescopic shielding segments 21, and an extrusion structure 2241 is provided on the first docking interface 224; the second docking interface 225 is arranged on the end of the inner telescopic shielding segment close to the shielding track 1 in the two adjacent telescopic shielding segments 21, and a reed 2251 is provided on the second docking interface 225. When the second docking interface 225 is docked with the first docking interface 224, the extrusion structure 2241 presses the reed 2251 to compress the reed 2251, so that the reed 2251 is in conductive contact with the extrusion structure 2241 to shield electromagnetic waves. Specifically, when two adjacent telescopic shielding sections 21 are extended, the first docking port 224 and the second docking port 225 approach each other until they are docked, and the extrusion structure 2241 presses the spring sheet 2251 so that the spring sheet 2251 is gradually compressed, ensuring that the extrusion structure 2241 is always in contact with the spring sheet 2251, that is, ensuring that the spring sheet 2251 is in conductive contact with the extrusion structure 2241 to shield electromagnetic waves. The extrusion structure 2241 can be a slope structure. Figure 8 In the figure, the arrow on the left indicates the sliding direction of the outer telescopic shielding segment when the two adjacent telescopic shielding segments 21 retract, and the arrow on the left indicates the sliding direction of the inner telescopic shielding segment when the telescopic shielding segment 21 retracts.

[0050] Continue to see Figures 1 to 4 , the shielding cover 2 is provided with an observation window 211. In this embodiment, at least one of the telescopic shielding sections 21 is provided with an observation window 211. Specifically, the observation window 211 can be provided as required for observing the patient's condition. The observation window is made of a transparent material and a shielding net. The transparent material can be glass, organic glass, transparent polycarbonate, etc. as required. This embodiment uses a transparent polycarbonate material that is relatively light and has good impact resistance. The observation window 211 can be in conductive contact with the shielding plate of the telescopic shielding section 21.

[0051] For example, Figure 4 As shown, an observation window 211 is provided on the front shielding segment 2101, and the observation window 211 is in conductive contact with the shielding plate of the front shielding segment 2101 to ensure the shielding effectiveness of electromagnetic waves while achieving observation.

[0052] See also Fig. 9, which is a schematic diagram of the structure of the observation window provided by an embodiment of the present invention. As shown in the figure, the observation window 211 includes: at least two layers of transparent panels 2111; wherein, a shielding net 2112 is provided between any two adjacent layers of transparent panels 2111. Specifically, this embodiment can adopt a double-layer shielding net structure, and the interval between the two layers of shielding nets 2112 is 4mm. The more layers of shielding nets 2112 and the larger the interval between the shielding nets 2112, the better the shielding effect, but it will occupy more space, and it needs to be optimized according to actual needs. The transparent panel 2111 can be made of glass, organic glass, transparent polycarbonate, etc. according to needs. This embodiment uses a transparent polycarbonate material that is lighter and has better impact resistance.

[0053] In this embodiment, the shielding cover 2 includes multiple telescopic shielding segments 21. To avoid sliding interference between the telescopic shielding segments 21, preferably, a sliding docking structure 4 is provided between the shielding track 1 and each telescopic shielding segment 21. Each sliding docking structure 4 does not interfere with each other, so that each telescopic shielding segment 21 can slide horizontally independently. For example, a sliding docking structure 4 is provided between the front shielding segment 2101 and the shielding track 1, and a sliding docking structure 4 is also provided between the rear shielding segment 2102 and the shielding track 1.

[0054] See also Figure 10 to Figure 11 , which shows a schematic diagram of the structure of two sliding docking structures provided in an embodiment of the present invention. As shown in the figure, two sliding docking structures are used as an example for explanation. Fig.10 As shown, the two sliding docking structures 4 are arranged on the same side of the shielding track 1 (such as Figure 1 As shown in the upper side), the shielding rail 1 has low machining accuracy requirements, is relatively simple to manufacture, and occupies a large space; Fig.11 As shown, when the two sliding docking structures 4 are arranged on different sides of the shielding track 1, the relative position accuracy of the two sliding docking structures 4 is relatively high and the processing is relatively difficult, but it can reduce the space occupied by the shielding track 1. Of course, there can be multiple sliding docking structures, which is not limited in this embodiment.

[0055] See also Figure 12 to Figure 13, which shows the preferred structure of the sliding docking structure provided by an embodiment of the present invention. As shown in the figure, the sliding docking structure 4 includes: a plurality of sliding grooves 41 and sliding protrusions 42; wherein, a plurality of sliding grooves 41 are arranged on the shielding rail 1 and arranged side by side; a plurality of sliding protrusions 42 are arranged on the shielding cover 2 and are arranged one by one with the sliding grooves 41, and the sliding protrusions 42 are slidably arranged in the sliding grooves 41, and the clearance between the sliding grooves 41 and the sliding protrusions 42 is matched so that the electromagnetic waves propagate along the gap between the sliding grooves 41 and the sliding protrusions 42, thereby realizing the attenuation of the electromagnetic waves. Specifically, the sliding grooves 41 may be one or more, preferably multiple, so as to increase the attenuation of the electromagnetic waves; the sliding grooves 41 may be arranged along the width direction of the shielding rail 1 (such as Fig.10 horizontal direction as shown) or thickness direction (as shown Fig.10 The shielding cover 2 and the sliding groove 41 are arranged side by side (in the vertical direction shown in the figure), the sliding protrusion 42 is arranged on the shielding cover 2 and corresponds to the sliding groove 41 one by one, the sliding protrusion 42 is arranged in the sliding groove 41 and can slide along the length direction of the sliding groove 41, that is, the length direction of the sliding track 1, to ensure that the sliding protrusion 42 is always located in the sliding groove 41, and at the same time, there is always a clearance fit between the two, and a roller can be arranged between the sliding protrusion 42 and the sliding groove 41 to achieve the sliding of the sliding protrusion 42, and at the same time, the sliding protrusion 42 is supported to achieve the clearance fit between the sliding protrusion 42 and the sliding groove 41. The clearance fit between the sliding protrusion 42 and the sliding groove 41 can reduce the friction of the sliding protrusion 42 and the sliding groove 41, and at the same time, the gap cavity can be arranged to refract and reflect the electromagnetic wave when the electromagnetic wave passes through to achieve the attenuation of the electromagnetic wave.

[0056] Continue to see Figure 12 to Figure 13 The sliding groove 41 can be a straight groove structure or an inverted T-shaped groove structure, and of course it can also be a dovetail groove structure or other structures; wherein the inverted T-shaped groove structure can constrain the sliding protrusion 42, so that the sliding protrusion 42 can only slide in the length direction of the inverted T-shaped groove structure, and avoid the two from separating along the depth direction of the inverted T-shaped groove structure. Of course, when the sliding groove 41 can be a straight groove structure, in order to avoid the sliding groove 41 and the sliding protrusion 42 from separating, preferably, the sliding groove 41 is set on the side wall surface of the shielding track 1 (such as Fig.11 On the left side wall of the shielding cover 2, the sliding protrusion 42 is bent along the side wall of the shielding cover 2 toward the other side wall of the shielding cover 2 to be embedded in the sliding groove 41.

[0057] For example, in this embodiment, two groups of sliding grooves 41 are provided on the shielding rail 1 to correspond to the two groups of sliding protrusions 42 respectively provided on the front shielding segment 2101 and the rear shielding segment 2102. The two groups of sliding grooves 41 of the shielding rail 1 are respectively provided on the upper wall surface and the side wall surface of the shielding rail 1. The sliding grooves 41 provided on the upper wall surface of the shielding rail 1 can be inverted T-shaped grooves, which are adapted to the inverted T-shaped protrusions provided on the rear shielding segment 2102; the sliding grooves 41 provided on the side wall surface of the shielding rail 1 can be straight groove structures, which are adapted to the inverted T-shaped protrusions provided on the rear shielding segment 2102.

[0058] See also Figure 14 to Figure 15 , which shows the preferred structure between the front shielding section and the shielding track provided by the embodiment of the present invention. As shown in the figure, the side wall surface of the shielding track 1 (such as Fig.14 The left side wall of the left shielding track is provided with a sliding groove 41 in a straight groove structure, and a plurality of sliding protrusions 42 arranged side by side are provided on the left side wall extending to the right of the front shielding section 2101. The opening of the sliding groove 41 is arranged toward the sliding protrusion 42, so that the sliding protrusion 42 can be slidably arranged in the sliding groove 41. Since the sliding groove 41 is arranged on the side wall surface of the shielding track 1, the sliding groove 41 limits the sliding protrusion 42 in the vertical direction, so the sliding protrusion 42 can only slide along the length direction of the sliding groove 41; a slide rail structure 21013 can also be provided between the shielding track 1 and the front shielding section 2101 to achieve a slidable connection between the two. The structure of the sliding docking structure 4 between the outermost telescopic shielding section and the shielding track 1 can refer to the sliding docking structure 4 on the front shielding section 2101.

[0059] See also Figure 16 to Figure 17 , which shows the preferred structure between the rear shielding segment and the shielding track provided by the embodiment of the present invention. As shown in the figure, the upper wall surface of the shielding track 1 is provided with a sliding groove 41 in an inverted T-shaped groove structure, and the bottom side wall of the rear shielding segment 2102 is extended with a plurality of sliding protrusions 42 arranged side by side, and the opening of the sliding groove 41 is facing the sliding protrusion 42, that is, it is arranged upward, so that the sliding protrusion 42 can be slidably arranged in the sliding groove 41; a roller 21023 can also be provided between the sliding groove 41 and the sliding protrusion 42 to achieve a slidable connection between the two. The innermost telescopic shielding segment and the middle telescopic shielding segment can refer to the sliding docking structure 4 on the rear shielding segment 2102.

[0060] Continue to see Figures 14 to 17The shielding track 1 includes: a shielding plate 12 and two shielding rails 11; wherein the two shielding rails 11 are respectively arranged and connected on the two long sides of the shielding plate 12 to form electromagnetic shielding at the bottom of the shielding cabin. Specifically, the shielding plate 12 can be a rectangular plate-shaped structure for electromagnetic shielding, and the shielding plate 12 can be shieldedly connected or conductively contacted with the shielding door 3 and the magnetic resonance body 6 to achieve electromagnetic shielding; the two shielding rails 11 are respectively arranged and connected on the two long sides of the shielding plate 12, and are usually arranged along the long sides of the shielding plate 12 to be shielded and connected to the shielding cover 2, so that the shielding cover 2, the shielding door 3, the magnetic resonance body 6 and the shielding track 1 as a whole form a fully enclosed shielding cabin on all sides.

[0061] In this embodiment, the front shielding segment 2101 as a whole, that is, the shielding plate of the front shielding segment 2101, the first interface 21011, the second interface 21012, and the sliding protrusion 42 on the front shielding segment 2101 can all be made of conductive materials. In this embodiment, aluminum is used, which has good conductivity and is lightweight. To prevent surface oxidation, all aluminum parts need to be subjected to conductive oxidation treatment, and good conductive connections are required between all parts; the rear shielding segment 2102 as a whole, that is, the shielding plate of the rear shielding segment 2102, the third interface 21021, the fourth interface 21022, and the sliding protrusion 42 on the rear shielding segment 2102 can all be made of conductive materials. In this embodiment, aluminum is used, which has good conductivity and is lightweight. To prevent surface oxidation, all aluminum parts need to be subjected to conductive oxidation treatment, and good conductive connections are required between all parts.

[0062] In an alternative embodiment, the sliding docking structure 4 can also be a reed arranged on the shielding track 1, and there is conductive contact between the shielding cover 2 and the reed. Since the shielding cover 2 and the shielding track 1 are slidably connected, the reed is severely worn in this manner compared to the labyrinth shielding structure.

[0063] In summary, the electromagnetic shielding cabin provided in this embodiment can adjust the position of the shielding cover 2 by slidably setting the shielding cover 2 on the shielding track 1, so as to open the shielding cover 2 so as to have an operating space between the shielding cover 2 and the magnetic resonance body 6, so as to locate and fix the radio frequency coil and place the object 7 to be detected in the operating space, and can also be moved to the side close to the magnetic resonance body 6, so as to reduce the overall length of the shielding cover 2 and reduce the occupied space when moving; the shielding door 3 set at the second opening end of the shielding cover 2 can realize the object 7 to be detected to enter and exit the magnetic resonance system, and the shielding cover 2 is also used to form a shielding cavity, which can provide a good shielding environment for magnetic resonance, so as to ensure that the magnetic resonance obtains excellent imaging and provide a reliable basis for treatment, and the shielding room is no longer needed to be built outside, and it can be used anywhere, which is convenient for the movement of the magnetic resonance system; the setting of the sliding shielding structure 4, the docking shielding interface 5, and the elastic shielding structure can attenuate or shield electromagnetic waves, and ensure the shielding effectiveness of the shielding cavity. The electromagnetic shielding cabin has a simple and compact structure, is easy to operate, can be moved with the magnetic resonance system, and solves the problems of the existing shielding room being bulky, inconvenient to operate, and unable to move.

[0064] Magnetic resonance system embodiment:

[0065] This embodiment also provides a magnetic resonance system, on which the electromagnetic shielding cabin is provided. The specific implementation process of the electromagnetic shielding cabin can be found in the above description, and this embodiment will not be repeated here.

[0066] Since the electromagnetic shielding cabin has the above-mentioned effects, the magnetic resonance system having the electromagnetic shielding cabin also has corresponding technical effects.

[0067] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0068] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An electromagnetic shielding cabin, characterized in that: include: Shielding tracks; A shielding cover is slidably disposed on the shielding track, and a sliding shielding structure is provided between the shielding cover and the shielding track to attenuate or shield electromagnetic waves; a first opening end of the shielding cover is provided with a docking shielding interface to be shieldedly connected with the magnetic resonance body; A shielding door, which is rotatably arranged at the second opening end of the shielding cover, and when the shielding door is closed, a shielding cavity is formed between the shielding door, the shielding cover, the shielding track and the magnetic resonance body; The docking shielding interface comprises: a plurality of clamping protrusions arranged side by side, which are arranged one by one corresponding to a plurality of clamping grooves arranged on the magnetic resonance body, and when the shielding cover is docked with the magnetic resonance body, the clamping protrusions and the clamping grooves are used to attenuate or shield electromagnetic waves; or, The docking shielding interface comprises: a plurality of clamping grooves arranged side by side, which are arranged one by one corresponding to a plurality of clamping protrusions arranged on the magnetic resonance body, and when the shielding cover is docked with the magnetic resonance body, the clamping protrusions and the clamping grooves are used to attenuate or shield electromagnetic waves; The shielding track comprises: Shielding plate; Two shielding rails are respectively arranged and connected on the two long sides of the shielding plate to form full electromagnetic shielding of the bottom of the shielding cabin.

2. The electromagnetic shielding cabin according to claim 1, characterized in that: The shielding cover comprises: A plurality of telescopic shielding segments are sequentially covered on the shielding track, at least one of the telescopic shielding segments is slidably connected to the shielding track, and a shielding docking structure is provided between any two adjacent telescopic shielding segments to shield or attenuate electromagnetic waves when the two adjacent telescopic shielding segments are docked.

3. The electromagnetic shielding cabin according to claim 2, characterized in that: The shielding docking structure comprises: A plurality of groove structures, which are arranged on one of the two adjacent telescopic shielding sections; A plurality of protrusion structures are arranged on the other of the two adjacent telescopic shielding segments; each of the protrusion structures is arranged in one-to-one correspondence with the groove structure, and when the two adjacent telescopic shielding segments are butt-jointed, the protrusion structure is inserted into the corresponding groove structure to attenuate or shield electromagnetic waves.

4. The electromagnetic shielding cabin according to claim 3, characterized in that: A first gap channel connected to each other is provided between the groove structure and the protrusion structure along the inner wall of the groove structure, so as to refract and reflect the electromagnetic wave to achieve attenuation of the electromagnetic wave.

5. The electromagnetic shielding cabin according to claim 2, characterized in that: The shielding docking structure comprises: A first docking interface is provided at an end of an outer telescopic shielding segment away from the shielding track in two adjacent telescopic shielding segments, and an extrusion structure is provided on the first docking interface; A second docking interface is arranged on the end of the inner telescopic shielding segment close to the shielding track in the two adjacent telescopic shielding segments, and a reed is provided on the second docking interface. When the second docking interface is docked with the first docking interface, the extrusion structure presses against the reed to compress the reed, so that the reed is in conductive contact with the extrusion structure to shield electromagnetic waves.

6. The electromagnetic shielding cabin according to any one of claims 1 to 5, characterized in that: The sliding shielding structure comprises: at least one sliding groove disposed on the shielding rail; At least one sliding protrusion is arranged on the shielding cover and corresponds to the sliding groove one by one. The sliding protrusion can be slidably arranged in its corresponding sliding groove to refract and reflect the electromagnetic wave to achieve attenuation of the electromagnetic wave.

7. The electromagnetic shielding cabin according to claim 6, characterized in that: The sliding groove and the sliding protrusion are clearance-matched to refract and reflect the electromagnetic wave, thereby achieving attenuation of the electromagnetic wave.

8. The electromagnetic shielding cabin according to claim 1, characterized in that: When the shielding cover is docked with the magnetic resonance body, the clamping protrusion and the clamping groove are gap-matched to refract and reflect the electromagnetic wave, thereby achieving attenuation of the electromagnetic wave.

9. The electromagnetic shielding cabin according to any one of claims 1 to 5, characterized in that: An observation window is provided on the shielding cover.

10. The electromagnetic shielding cabin according to claim 9, characterized in that: The observation window comprises: at least two layers of transparent panels; wherein, A shielding net is arranged between any two adjacent layers of the transparent panels.

11. A magnetic resonance system, characterized in that: An electromagnetic shielding cabin as claimed in any one of claims 1 to 10 is provided.

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