Screening device capable of threading and magnetic resonance system

Abstract

The utility model provides a shielding device capable of threading and a magnetic resonance system. The shielding device comprises a shielding cover, a first shielding interface and a second shielding interface, wherein the first shielding interface is arranged at the end part of the shielding case; the second shielding interface is matched with the first shielding interface; and an opening is formed in the first shielding interface and / or the second shielding interface. When the first shielding interface and the second shielding interface are in butt joint, waveguide holes are formed at the openings of the first shielding interface and the second shielding interface, and medical pipeline accessories can penetrate through the waveguide holes and extend into the shielding cover so as to be in contact with a patient on the bed board; the first shielding interface and the second shielding interface are in butt joint, electromagnetic shielding at the butt joint position between the shielding cover and the magnetic resonance body is achieved, meanwhile, the first shielding interface and the second shielding interface are in butt joint at the opening to form a waveguide hole, and interference signals entering the shielding cabin from the opening are shielded or attenuated.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic resonance shielding, in particular to a threadable shielding device and a magnetic resonance system. 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] The Chinese publication number is: CN 205718070 U, which discloses an electromagnetic shielding cabin, including a shielding track; a shielding cabin, which is slidably arranged on the shielding track, and a sliding shielding structure is provided between the shielding cabin and the shielding track to attenuate or shield electromagnetic waves; a first opening end of the shielding cabin is provided with a docking shielding interface to connect with a magnetic resonance body; a shielding door, which is rotatably arranged and connected to the second opening end of the shielding cabin, and an end surface of the second opening end is provided with an elastic shielding structure to enable conductive contact between the shielding door and the shielding cabin when the shielding door is closed.

[0004] The electromagnetic shielding cabin provided by the above technical solution forms a closed shielding cavity through the shielding door and the shielding cabin, which replaces the original shielding room function and provides a good shielding environment for magnetic resonance. However, during the scanning process, the patient needs to use some non-MRI-specific medical equipment (such as ventilators, monitors, etc.). These devices need to keep in contact with the patient. The electromagnetic shielding cabin forms a closed shielding cavity, which causes the non-MRI-specific medical equipment and the patient to be separated outside and inside the shielding cavity, and cannot be in contact. As a result, the non-MRI-specific medical equipment and the magnetic resonance system are incompatible for use, resulting in the patient's MRI scanning and non-MRI-specific medical equipment such as ventilators cannot be used at the same time. Summary of the invention

[0005] In view of this, the utility model proposes a threadable shielding device and a magnetic resonance system, aiming to solve the problem that the existing electromagnetic shielding cabin separates non-MRI-specific medical equipment and patients outside and inside the shielding cavity, resulting in incompatible use.

[0006] On the one hand, the utility model proposes a threadable shielding device, which includes: a shielding cover, a first shielding interface and a second shielding interface; wherein the first shielding interface is arranged at the end of the shielding cover; the second shielding interface is adapted to the first shielding interface, and when the shielding cover is closed, the second shielding interface is docked with the first shielding interface; an opening is provided on the first shielding interface and / or the second shielding interface, and when the shielding cover is closed, the first shielding interface and the second shielding interface are docked and a waveguide hole is formed at the opening, so that medical pipeline accessories can pass through the waveguide hole and can extend to the interior of the shielding cover to contact the patient, and the docked first shielding interface and second shielding interface shield or attenuate interference signals entering the shielding cover.

[0007] Furthermore, in the above-mentioned threadable shielding device, a supporting protective member is provided at the opening or the opening adaptation position on the first shielding interface or the second shielding interface, and when the shielding cover is closed, the supporting protective member is placed in the waveguide hole, and the supporting protective member is used to support and protect the medical pipeline accessories.

[0008] Furthermore, in the above-mentioned threadable shielding device, the supporting protective member is a U-shaped member with its opening arranged upward, the bottom wall of the U-shaped member is used to support the medical pipeline accessories, and the two side walls of the U-shaped member are used to limit and protect the medical pipeline accessories.

[0009] Furthermore, in the above-mentioned threadable shielding device, the first shielding interface and the second shielding interface are both provided with shielding parts at the opening or at the adaptation position of the opening; when the shielding cover is closed, the two shielding parts on the first shielding interface and the second shielding interface are connected to form a shielding tube for shielding or attenuating interference signals entering the shielding cover from the waveguide hole.

[0010] Furthermore, in the above-mentioned threadable shielding device, the shielding member provided at the opening is a U-shaped plate structure, and the opening direction of the U-shaped plate structure is consistent with the opening direction of the opening.

[0011] Further, in the above-mentioned threadable shielding device, the first shielding interface includes at least one latching protrusion, and the second shielding interface includes at least one latching groove adapted to the latching protrusion; or, the first shielding interface includes at least one latching groove, and the second shielding interface includes at least one latching protrusion adapted to the latching groove.

[0012] Furthermore, in the above-mentioned threadable shielding device, the clearance between the clamping protrusion and the clamping groove is matched to refract and reflect the electromagnetic waves to achieve attenuation of the electromagnetic waves.

[0013] Further, in the above-mentioned threadable shielding device, openings are provided on the first shielding interface and the second shielding interface, and when the shielding cover is closed, the two openings are connected to form a waveguide hole; or, the first shielding interface is provided with an opening, and when the shielding cover is closed, a waveguide hole is formed between the opening and the second shielding interface; or, the second shielding interface is provided with an opening, and when the shielding cover is closed, a waveguide hole is formed between the opening and the first shielding connection interface.

[0014] Furthermore, in the above-mentioned threadable shielding device, the opening is a U-shaped opening structure.

[0015] Another problem is that the utility model provides a magnetic resonance system, which has the above-mentioned threadable shielding device.

[0016] The utility model provides a threadable shielding device and a magnetic resonance system. Through the openings provided on the first shielding interface and / or the second shielding interface, when the first shielding interface and the second shielding interface are connected, a waveguide hole is formed at the openings of the first shielding interface and the second shielding interface, and medical pipeline accessories can pass through the waveguide hole and penetrate into the shielding cover to contact the patient on the bed plate; in addition, the first shielding interface and the second shielding interface are connected to each other, which can realize electromagnetic shielding at the connection position between the shielding cover and the magnetic resonance body. At the same time, the first shielding interface and the second shielding interface are connected at the opening to form a waveguide hole, which can prevent the medical pipeline accessories from entering the shielding cover from the opening. Interference signals in the cabin are shielded or attenuated, and non-MRI-specific medical equipment can be used during the MRI scanning process, achieving compatibility between the MRI system and life support equipment or life monitoring equipment such as ventilator monitors. During the MRI scanning, the patient can also be supplied with air for life support or life monitoring, which solves the problem of incompatible use caused by the existing electromagnetic shielding cabin that non-MRI-specific medical equipment and patients are separated outside and inside the shielding cavity, and can be used without interruption or intermittently for a short time while the patient is undergoing an MRI scan. It also greatly saves equipment costs and improves the efficiency of patient treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 A schematic structural diagram of a threadable shielding device in an open state provided by an embodiment of the utility model;

[0019] Figure 2A schematic structural diagram of a threadable shielding device provided by an embodiment of the utility model in an open use state;

[0020] Figure 3 A schematic structural diagram of a threadable shielding device in a closed use state provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The 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 described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and 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 in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Shielding device embodiment:

[0023] See also Figures 1 to 3 , which shows the preferred structure of the threadable shielding device provided by the embodiment of the utility model. As shown in the figure, the threadable shielding device comprises: a shielding cover 1, a first shielding interface 2 and a second shielding interface 3; wherein,

[0024] The first shielding interface 2 is arranged at the end of the shielding cover 1 (such as Figure 1 The second shielding interface 3 is adapted to the first shielding interface 2. When the shielding cover 1 is closed, the second shielding interface 3 is connected to the first shielding interface 2 to attenuate electromagnetic waves. Specifically, the end of the shielding cover 1 facing the magnetic resonance body 4 (as shown in FIG. Figure 1 The first shielding interface 2 is provided on the right end of the magnetic resonance body 4, and the second shielding interface 3 is provided on the side wall of the magnetic resonance body 4 facing the shielding cover 1. The first shielding interface 2 is adapted to the second shielding interface 3. When the shielding cover 1 is closed, the first shielding interface 2 is docked with the second shielding interface 3 to attenuate the electromagnetic wave. In this embodiment, the shielding cover 1 can be a sliding shielding cover structure, that is, a sliding electromagnetic shielding cover structure; the shielding cover 1 can be a U-shaped structure, which can be covered on the bed board 5 to scan and shield the object to be detected carried on the bed board 5; the bed board 5 is provided with a shielding track 51, and the shielding cover 1 can be slidably arranged on the shielding track 51 to adjust the position along the lateral direction of the magnetic resonance system, for example, it can slide to the position of contacting the magnetic resonance body 4, so that the shielding cover 1 and the magnetic resonance body 4 are shielded and connected through the first shielding interface 2 and the second shielding interface 3, and the shielding cover 1 is closed to form a shielding cavity on the bed board 5.

[0025] The first shielding interface 2 and / or the second shielding interface 3 are provided with an opening 6. When the shielding cover 1 is closed, the first shielding interface 2 and the second shielding interface 3 are connected and a waveguide hole is formed at the opening 6, so that the medical pipeline accessory 7 can pass through the waveguide hole and can extend to the inside of the shielding cover 1 to contact the patient. The connected first shielding interface 2 and the second shielding interface 3 shield or attenuate the interference signal entering the shielding cover 1. Specifically, the end of the first shielding interface 2 and / or the second shielding interface 3 is provided with an opening 6, i.e., a notch. The opening 6 is arranged through the thickness direction of the first shielding interface 2 and / or the second shielding interface 3, so that the medical pipeline accessory 7 can pass through the opening 6 and penetrate into the shielding cover 1 to contact the patient on the bed board 5. Non-MRI-specific medical equipment can be used during the magnetic resonance scanning process, and the compatibility between the magnetic resonance system and life-sustaining equipment or life-monitoring equipment such as a ventilator monitor can be achieved. During the magnetic resonance scanning, the patient can also be supplied with gas for life maintenance or life monitoring, which greatly saves the equipment cost and improves the efficiency of patient treatment. In addition, the first shielding interface 2 and the second shielding interface 3 are connected to each other, so that electromagnetic shielding can be achieved at the connection position between the shielding cover 1 and the magnetic resonance body 4. At the same time, the first shielding interface 2 and the second shielding interface 3 are connected to each other at the opening to form a waveguide hole, so as to shield or attenuate the interference signal entering the shielding cabin 1 from the opening 6. The first shielding interface 2 and the second shielding interface 3 have a preset thickness, so that the waveguide hole has a preset length, thereby ensuring that the waveguide hole shields and attenuates the interference signal in the hole.

[0026] In this embodiment, the first shielding interface 2 includes at least one clamping protrusion 21, and the second shielding interface 3 includes at least one clamping groove 31 adapted to the clamping protrusion 21. Preferably, the clamping protrusion 21 and the clamping groove 31 are clearance-matched to refract and reflect electromagnetic waves to achieve attenuation of electromagnetic waves. Specifically, the first shielding interface 2 may include a plurality of clamping protrusions 21 arranged side by side along the thickness direction of the shielding cover 1, and the second shielding interface 3 may include a plurality of clamping grooves 31 arranged side by side along the thickness direction of the magnetic resonance body 6, and the clamping grooves 31 are arranged one by one with the clamping protrusions 21. When the shielding cover 1 is closed, the clamping protrusions 21 can be inserted into the corresponding clamping grooves 31, and the plurality of clamping grooves 31 arranged side by side are not connected, but only connected at the opening of the clamping grooves 31; when the shielding cover 1 is docked with the magnetic resonance body 4, the clamping protrusions 21 are inserted into the corresponding clamping grooves 31 from the openings on the sides of the clamping grooves 31, forming a labyrinth shielding structure, and the electromagnetic waves are attenuated through multiple layers of continuous refraction and reflection, thereby meeting the shielding efficiency requirements. The clearance fit between the clamping protrusions 21 and the clamping grooves 31 can also facilitate the closing of the shielding cover 1 and reduce the friction between the first shielding interface 2 and the second shielding interface 3.

[0027] Of course, in other embodiments, the first shielding interface 2 may also include at least one locking groove, and the second shielding interface 3 includes at least one locking protrusion adapted to the locking groove; wherein the gap between the locking protrusion and the locking groove is matched to refract and reflect the electromagnetic waves to achieve attenuation of the electromagnetic waves.

[0028] Continue to see Figures 1 to 3 A support and protection member 8 is provided at the opening 6 or at the adapting position of the opening 6 on the first shielding interface 2 or the second shielding interface 3. When the shielding cover 1 is closed, the support and protection member 8 is placed in the waveguide hole. The support and protection member 8 is used to support and protect the medical pipeline accessories 7. Specifically, the support and protection member 8 can be a hook structure, and the patient pipeline can be placed on the hook when in use, and the pipeline can be prevented from being squeezed when the shielding cover 1 is closed and slidable; of course, the support and protection member 8 can also be other structures, which are not limited in this embodiment.

[0029] In this embodiment, the supporting and protecting member 8 may be a U-shaped member, the opening of which is arranged upward, the bottom wall of the U-shaped member is used to support the medical pipeline accessory 7, and the two side walls of the U-shaped member are used to limit and protect the medical pipeline accessory 7 to prevent the medical pipeline accessory 7 from being squeezed when the shielding cover 1 is closed. Specifically, the U-shaped member may be a U-shaped hook with an opening facing upward, which limits and protects the medical pipeline accessory 7.

[0030] In this embodiment, the end of the first shielding interface 2 (such as Figure 1The first shielding interface 2 and the second shielding interface 3 are provided with an opening 6. When the shielding cover 1 is closed, a waveguide hole is formed between the opening 6 provided on the first shielding interface 2 and the second shielding interface 3. Specifically, the first shielding interface 2 and the shielding cover 1 are an integral structure. The first shielding interface 2 and the shielding cover 1 are provided with a connected opening 6. When the first shielding interface 2 and the second shielding interface 3 are connected, the first shielding interface 2 and the second shielding interface 3 are stacked along their thickness direction to form a shielding structure. The opening 6 of the shielding cover 1 and the side wall of the second shielding interface 3 facing the first shielding interface 2 (as shown in FIG. Figure 1 The waveguide hole is formed between the first shielding interface 2 and the left side wall as shown in the figure. The medical pipeline accessory 7 can pass through the opening 6 of the first shielding interface 2 and be located in the waveguide hole. In this embodiment, the opening 6 is a U-shaped opening structure, and its opening direction is set toward the second shielding interface 3, that is, the opening is to the right (relative to the Figure 1 The opening depth, i.e., the transverse opening length, can be determined based on the medical line attachment 7, and is not limited in this embodiment.

[0031] Of course, in other first embodiments, the opening can also be set at the end of the second shielding interface 3, that is, the end of the second shielding interface 3 is provided with an opening, and when the shielding cover 1 is closed, a waveguide hole is formed between the opening 6 set on the second shielding interface 3 and the first shielding interface 2. Specifically, a connection structure can be provided on the magnetic resonance body 4, and the connection structure and the second shielding interface 3 can be an integral structure; the connection structure and the second shielding interface 3 are both provided with a connected opening 6, and when the first shielding interface 2 and the second shielding interface 3 are docked, the first shielding interface 2 and the second shielding interface 3 are stacked along the thickness direction thereof to form a shielding structure. A waveguide hole is formed between the opening 6 of the connection structure and the side wall of the first shielding interface 2 facing the second shielding interface 3, and the medical pipeline accessory 7 can pass through the opening 6 of the second shielding interface 3 and be in the waveguide hole. In this embodiment, the opening 6 is a U-shaped opening structure, and its opening direction is set toward the first shielding interface 2, that is, the opening is to the left. Among them, the opening depth can be determined based on the medical pipeline accessory 7, and no limitation is made to it in this embodiment.

[0032] In other second embodiments, openings are provided at positions where the first shielding interface 2 and the second shielding interface 3 are adapted, and the two openings are arranged opposite to each other. Specifically, openings are provided at positions where the first shielding interface 2 and the second shielding interface 3 are adapted, the opening direction of the opening on the first shielding interface 2 is set toward the second shielding interface 3, and the opening direction of the opening on the second shielding interface 3 is set toward the first shielding interface 2. When the first shielding interface 2 and the second shielding interface 3 are docked, the first shielding interface 2 and the second shielding interface 3 are stacked along their thickness direction to form a shielding structure. At the same time, a waveguide hole is formed at the position where the first shielding interface 2 and the second shielding interface 3 are provided with an opening. Among them, the opening 6 is a U-shaped opening structure. When the first shielding interface 2 and the second shielding interface 3 are docked, the two U-shaped opening structures are docked to form a waist-shaped hole structure.

[0033] Since the shielding effect of the waveguide hole is related to its aspect ratio, the larger the aspect ratio, the better the shielding effect. Since the diameter that the medical line accessory 7 needs to occupy is fixed, the size of the opening 6 can be determined based on the outer diameter of the medical line accessory; then the shielding effect is only related to the thickness of the first shielding interface 2 and the second shielding interface 3, that is, the depth or length of the waveguide hole. The thicker the first shielding interface 2 and the second shielding interface 3, the longer the length of the waveguide hole, the better the shielding effect.

[0034] In order to further reduce the electromagnetic interference introduced by setting the opening 6, the first shielding interface 2 and the second shielding interface 3 are both provided with a shielding member 9 at the opening 6 or at the adapting position of the opening 6, and the shielding member 9 is used to shield or attenuate the interference signal entering the shielding cabin 1 from the opening 6. Specifically, when the shielding cover 1 is closed, the two shielding members 9 on the first shielding interface 2 and the second shielding interface 3 are butted to form a shielding tube, and the medical line accessory 7 can be wrapped in the shielding tube, and the electromagnetic interference of the waveguide hole is further shielded or attenuated by the shielding tube.

[0035] In this embodiment, the end of the first shielding interface 2 (such as Figure 1 The first shielding interface 2 is provided with an opening 6 (shown at the right end). When the shielding cover 1 is closed, a waveguide hole is formed between the opening 6 provided on the first shielding interface 2 and the second shielding interface 3. The shielding member 9 provided at the opening 6 of the first shielding interface 2 is a U-shaped plate structure, and the opening direction of the U-shaped plate structure is consistent with the opening direction of the opening 6, that is, the opening is to the right (relative to Figure 1 The shielding member 9 is disposed in the opening of the shielding cover 1, and the opening of the first shielding interface 2 may not be provided with a shielding member to avoid interference with the second shielding interface 3 when docking. The side wall of the second shielding interface 3 facing the first shielding interface 2 (such as Figure 1A shielding member may be provided on the left side wall as shown in the figure at the fitting position of the opening 6. The shielding member may be a straight plate structure that is connected to the U-shaped plate structure to close the opening of the U-shaped plate structure.

[0036] Of course, in other first embodiments, the opening may also be provided at the end of the second shielding interface 3, that is, the end of the second shielding interface 3 is provided with an opening, and when the shielding cover 1 is closed, a waveguide hole is formed between the opening 6 provided on the second shielding interface 3 and the first shielding interface 2. The shielding member 9 provided at the opening 6 of the second shielding interface 3 is a U-shaped plate structure, and the opening direction of the U-shaped plate structure is consistent with the opening direction of the opening 6, that is, the opening is to the left. The shielding member 9 is provided in the opening provided on the shielding cover 1, and the opening of the second shielding interface 3 may not be provided with a shielding member to avoid interference when it is docked with the second shielding interface 3. A shielding member may be provided at the opening adaptation position on the side wall of the first shielding interface 2 facing the second shielding interface 3, and the shielding member may be a straight plate structure, which docks with the U-shaped plate structure to close the opening of the U-shaped plate structure.

[0037] In other second embodiments, openings are provided at positions where the first shielding interface 2 and the second shielding interface 3 are adapted, and the two openings are arranged opposite to each other. The shielding member 9 provided at the opening 6 of the first shielding interface 2 and the second shielding interface 3 is a U-shaped plate structure, and the opening direction of the U-shaped plate structure is consistent with the opening direction of the opening. When the first shielding interface 2 and the second shielding interface 3 are docked, the two U-shaped plate structures are docked to form a waist-shaped tube structure.

[0038] The threadable shielding device is used in the following way: when the shielding cover 1 is opened, the medical pipeline accessory 7 can be placed on the supporting protective member 8; when the shielding cover 1 is closed and slidable, the supporting protective member 8 can prevent the medical pipeline accessory 7 from being squeezed, so as to facilitate operation; the opening 6 provided on the first shielding interface 2 and / or the second shielding interface 3 is docked to form a waveguide hole; the first shielding interface 2 and the second shielding interface 3 are docked, so that interference signals can be shielded at the connection between the shielding cover 1 and the magnetic resonance body 4 and at the opening 6.

[0039] In summary, the threadable shielding device provided in this embodiment can pass through the opening 6 set on the first shielding interface 2 and / or the second shielding interface 3, and the medical pipeline accessory 7 can pass through the opening 6 and penetrate into the shielding cover 1 to contact the patient on the bed board 5; in addition, the first shielding interface 2 and the second shielding interface 3 are connected to each other, which can realize electromagnetic shielding at the connection position between the shielding cover 1 and the magnetic resonance body 4. At the same time, the first shielding interface 2 and the second shielding interface 3 are connected at the opening to form a waveguide hole to shield or attenuate the interference signal entering the shielding cabin 1 from the opening 6, which can By using non-MRI-specific medical equipment during the MRI scanning process, compatibility between the MRI system and life-support equipment or life-monitoring equipment such as ventilator monitors can be achieved. During the MRI scanning, the patient can also be supplied with air for life support or life monitoring. This solves the problem of incompatible use of non-MRI-specific medical equipment and patients separated by the outside and inside of the shielding cavity in the existing electromagnetic shielding cabin. This enables uninterrupted or short-term intermittent provision of respiratory support while the patient is undergoing an MRI scan, greatly saves equipment costs, and improves the efficiency of patient treatment.

[0040] Magnetic resonance system embodiment:

[0041] This embodiment also provides a magnetic resonance system, on which the above-mentioned threadable shielding device is provided. The specific implementation process of the threadable shielding device can be found in the above description, and this embodiment will not be repeated here.

[0042] Since the threadable shielding device has the above-mentioned effects, the magnetic resonance system having the threadable shielding device also has corresponding technical effects.

[0043] 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 merely 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 cannot be understood as a limitation on the present invention.

[0044] 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.

[0045] 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. A threadable shielding device, characterized in that: include: A shielding cover, a first shielding interface and a second shielding interface; wherein, The first shielding interface is arranged at the end of the shielding cover; The second shielding interface is adapted to the first shielding interface, and when the shielding cover is closed, the second shielding interface is butted against the first shielding interface; An opening is provided on the first shielding interface and / or the second shielding interface. When the shielding cover is closed, the first shielding interface and the second shielding interface are docked, and a waveguide hole is formed at the opening, so that medical pipeline accessories can pass through the waveguide hole and extend to the interior of the shielding cover to contact the patient. The docked first shielding interface and second shielding interface shield or attenuate interference signals entering the shielding cover.

2. The threadable shielding device according to claim 1, characterized in that: A supporting protective member is provided at the opening or the opening adaptation position on the first shielding interface or the second shielding interface. When the shielding cover is closed, the supporting protective member is placed in the waveguide hole. The supporting protective member is used to support and protect the medical pipeline accessories.

3. The threadable shielding device according to claim 2, characterized in that: The supporting and protecting member is a U-shaped member with an opening facing upwards. The bottom wall of the U-shaped member is used to support the medical pipeline accessories, and the two side walls of the U-shaped member are used to limit and protect the medical pipeline accessories.

4. The threadable shielding device according to any one of claims 1 to 3, characterized in that: The first shielding interface and the second shielding interface are both provided with shielding members at the opening or at the opening adaptation position, for shielding or attenuating interference signals entering the shielding cover from the waveguide hole.

5. The threadable shielding device according to claim 4, characterized in that: The shielding member arranged at the opening is in a U-shaped plate structure, and the opening direction of the U-shaped plate structure is consistent with the opening direction of the opening.

6. The threadable shielding device according to any one of claims 1 to 3, characterized in that: The first shielding interface includes at least one latching protrusion, and the second shielding interface includes at least one latching groove matched with the latching protrusion; or, The first shielding interface includes at least one locking groove, and the second shielding interface includes at least one locking protrusion matched with the locking groove.

7. The threadable shielding device according to claim 6, characterized in that: The clearance between the clamping protrusion and the clamping groove is matched to refract and reflect the electromagnetic wave to achieve attenuation of the electromagnetic wave.

8. The threadable shielding device according to any one of claims 1 to 3, characterized in that: The first shielding interface and the second shielding interface are both provided with openings, and when the shielding cover is closed, the two openings are butted together to form a waveguide hole; or, The first shielding interface is provided with an opening, and when the shielding cover is closed, a waveguide hole is formed between the opening and the second shielding interface; or, The second shielding interface is provided with an opening, and when the shielding cover is closed, a waveguide hole is formed between the opening and the first shielding interface.

9. The threadable shielding device according to any one of claims 1 to 3, characterized in that: The opening is in a U-shaped opening structure.

10. A magnetic resonance system, characterized in that: A threadable shielding device as claimed in any one of claims 1 to 9 is provided.

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