Phantom adjustment device and magnetic resonance scanning apparatus

Abstract

The application relates to a phantom adjusting device and a magnetic resonance scanning device. The phantom adjusting device comprises a driving assembly and an adjusting assembly; the driving assembly comprises a first driving assembly and a second driving assembly; the first driving assembly is used for driving the phantom to move along an axial direction; the second driving assembly is used for driving the phantom to rotate around the axial direction; the adjusting assembly is connected with the phantom and the driving assembly, and is used for adjusting the distance between the phantom and the driving assembly in the axial direction. The first driving assembly is used for driving the phantom to rotate around the axial direction, so that the position of the phantom in the circumferential direction can be adjusted; the second driving assembly is used for driving the phantom to move along the axial direction, so that the position of the phantom in the axial direction can be adjusted, so that the phantom can simulate the real situation of an organ under different positions; and the adjusting assembly is used for adjusting the distance between the phantom and the driving assembly in the axial direction, so that the driving part on the driving assembly can be far away from a magnetic field scanning area, the influence on the magnetic field is reduced, and the precision of the phantom magnetic resonance scanning is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to phantom adjustment devices and magnetic resonance scanning equipment. Background Technology

[0002] In magnetic resonance imaging (MRI) systems, adjustment mechanisms are typically incorporated to drive the phantom's movement and rotation, thereby adjusting its positioning to simulate the actual condition of organs under different orientations. However, in existing technologies, the drive components within these adjustment mechanisms can interfere with the magnetic field of the MRI system, affecting the accuracy of the phantom's MRI scans. Utility Model Content

[0003] Therefore, it is necessary to provide a phantom adjustment device to address the problem that the driving components in the adjustment device may interfere with the magnetic field in the magnetic resonance system, thus affecting the accuracy of phantom magnetic resonance scanning.

[0004] A phantom adjustment device includes a drive assembly and an adjustment assembly; the drive assembly includes a first drive assembly and a second drive assembly.

[0005] The first driving component is used to drive the mold body to move along the axial direction of the mold body;

[0006] The second drive component is used to drive the mold body to rotate about the axis;

[0007] The adjustment component is connected to the mold and the drive component, and the adjustment component is used to adjust the distance between the mold and the drive component in the axial direction.

[0008] In one embodiment, the adjustment assembly includes an inner shaft, an outer shaft, and a fastener. The inner shaft and the outer shaft are coaxially nested, and one of the inner shaft and the outer shaft is connected to the drive assembly for transmission. The other of the inner shaft and the outer shaft is used to connect to the mold body, and the fastener is used to fix the relative position of the inner shaft and the outer shaft in the axial direction.

[0009] In one embodiment, the outer shaft is provided with a fastening hole, the fastener passes through the fastening hole and is connected to the outer shaft, and the fastener is used to abut against the inner shaft to restrict the relative movement of the inner shaft and the outer shaft in the axial direction.

[0010] In one embodiment, the inner shaft has a locking surface on the side facing the fastening hole, and the fastener is used to abut against the locking surface and fit against the locking surface.

[0011] In one embodiment, the first driving component is drively connected to the end of the adjusting component away from the mold body, and the first driving component is used to drive the adjusting component to rotate about the axial direction;

[0012] The second drive component is connected to the first drive component, and the second drive component is used to drive the first drive component to move along the axial direction.

[0013] In one embodiment, the first driving component includes a first non-magnetic ultrasonic motor, which is connected to the second driving component and the phantom, and is used to drive the adjustment component to rotate about the axis.

[0014] The second drive assembly includes a second non-magnetic ultrasonic motor, which is drively connected to the first drive assembly and is used to drive the first drive assembly to move along the axial direction.

[0015] In one embodiment, the mold adjustment device further includes a guide assembly, which includes a fixed part and a sliding part. The sliding part is connected to the first drive assembly and is slidably connected to the fixed part along the axial direction.

[0016] In one embodiment, the mold adjustment device further includes a connecting plate and a guide platform. The guide platform is provided with a guide hole. One end of the connecting plate is drively connected to the second driving component, and the other end of the connecting plate is connected to the first driving component. The connecting plate passes through the guide hole, and both sides of the connecting plate in a first direction are slidably connected to the hole wall of the guide hole, wherein the first direction is perpendicular to the axial direction.

[0017] In one embodiment, the mold body adjustment device further includes a base plate, a base, and a locking member. The base plate is used to support the mold body. The second drive assembly is mounted on the base. The base is slidably connected to the base plate along the axial direction. The locking member is connected to the base and passes through the base plate to restrict the movement of the base relative to the base plate.

[0018] This application also provides a magnetic resonance scanning device that can solve at least one of the above-mentioned technical problems.

[0019] A magnetic resonance scanning device includes the phantom adjustment device described above.

[0020] The phantom adjustment device provided in this application includes a driving component and an adjustment component. The driving component includes a first driving component and a second driving component. The first driving component drives the phantom to move along the phantom axis. The second driving component drives the phantom to rotate around the axis. The adjustment component is connected to the phantom and the driving component and is used to adjust the axial distance between the phantom and the driving component. In this application, the first driving component drives the phantom to rotate around the axis, thereby adjusting the circumferential position of the phantom. The second driving component drives the phantom to move along the axis, thereby adjusting the axial position of the phantom. This allows the phantom to simulate the real situation of organs under different positions. By adjusting the axial distance between the phantom and the driving component, the driving part on the driving component can be moved away from the magnetic field scanning area to reduce the influence of the driving part on the magnetic field and improve the accuracy of the phantom magnetic resonance scanning.

[0021] This application also provides a magnetic resonance scanning device, including the above-mentioned phantom adjustment device, which can achieve at least one of the above-mentioned technical effects. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a phantom adjustment device provided in an embodiment of this application.

[0023] Figure 2 This is a top view of a phantom adjustment device provided in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the adjustment component in a phantom adjustment device provided in an embodiment of this application.

[0025] Figure 4 This is a cross-sectional view of the adjustment component in a phantom adjustment device provided in an embodiment of this application.

[0026] Figure 5 This is a side view of a portion of the structure of a phantom adjustment device provided in an embodiment of this application.

[0027] Figure 6 A side view of a portion of the structure in a phantom adjustment device provided in another embodiment of this application.

[0028] Icon labels:

[0029] 100 - Adjustment component; 110 - Inner shaft; 120 - Outer shaft; 130 - Fastener; 160 - Fastening hole; 170 - Locking surface; 180 - Fixing component; 190 - Fixing hole; 200 - Drive assembly; 210 - First drive assembly; 211 - First non-magnetic ultrasonic motor; 220 - Connecting plate; 300 - Second drive assembly; 310 - Second drive component; 311 - Second non-magnetic ultrasonic motor; 320 - Transmission component; 330 - Sliding block; 40 0-Guide assembly; 410-Fixing part; 420-Sliding part; 430-Sliding sleeve; 440-Guide shaft; 510-Base plate; 511-Guide groove; 512-Locking hole; 520-Base; 521-Elongated hole; 522-Support plate; 523-Support bar; 530-Locking component; 540-Limiting block; 550-Support platform; 560-Guide platform; 561-Guide hole; 600-Mold body; 610-Moving mold body; 620-Mold body. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a phantom adjustment device provided in an embodiment of this application. Figure 2 This is a top view of a mold body adjustment device provided in an embodiment of this application. The mold body adjustment device provided in an embodiment of this application includes a drive assembly 200 and an adjustment assembly 100. The drive assembly 200 includes a first drive assembly 210 and a second drive assembly 300. The first drive assembly 210 is used to drive the mold body 600 to move along the axial direction of the mold body 600. The second drive assembly 300 is used to drive the mold body 600 to rotate about the axial direction. The adjustment assembly 100 is connected to the mold body 600 and the drive assembly 200, and is used to adjust the axial distance between the mold body 600 and the drive assembly 200.

[0037] Specifically, in this application, the first driving component 210 drives the phantom 600 to rotate around the axial direction, thereby adjusting the circumferential position of the phantom 600. The second driving component 300 drives the phantom 600 to move along the axial direction, thereby adjusting the axial position of the phantom 600. This allows the phantom 600 to simulate the real condition of organs under different positions. The adjusting component 100 can adjust the axial distance between the phantom 600 and the driving component 200, allowing the driving part on the driving component 200 to be moved away from the magnetic field scanning area, thereby reducing the influence of the driving part in the driving component 200 on the magnetic field and improving the accuracy of the phantom magnetic resonance scanning.

[0038] The axial distance between the mold body 600 and the drive component 200 can be adjusted by adjusting component 100, and it can also be adapted to different mold bodies 600, thereby improving the adaptability of the mold body adjustment device.

[0039] It should be noted that, compared with the prior art where the driving component drives the mold 600 to move so that the driving part inside the driving component moves away from the magnetic field scanning area, in this application, the adjusting component 100 can adjust the axial distance between the mold 600 and the driving component 200 to adjust the axial position of the first driving component 210 and the second driving component 300. It does not need to limit the axial adjustment range of the mold 600, thus making the mold adjustment device highly adjustable and able to meet the translational stroke requirements of different molds 600.

[0040] See Figure 1 and Figure 2 In one embodiment, the mold adjustment device further includes a base plate 510, a base 520, and a locking member 530. The base plate 510 is used to support the mold 600. The second drive assembly 300 is installed on the base 520. The base 520 is axially slidably connected to the base plate 510. The locking member 530 is connected to the base 520 and passes through the base plate 510 to restrict the movement of the base 520 relative to the base plate 510.

[0041] Specifically, the base plate 510 supports the mold 600, preventing the mold 600 from being suspended in the air, thereby enabling stable driving of the mold 600 to move in the circumferential and axial directions to adjust its position. The base 520 is slidably connected to the base plate 510 along the axial direction, making the position of the base 520 relative to the base plate 510 axially adjustable. Thus, when the adjustment component 100 adjusts the axial distance between the mold 600 and the driving component 200, it is possible to accurately control the base 520 to move away from the mold 600 in the axial direction while keeping the position of the mold 600 unchanged, so as to move the driving part of the driving component 200 out of the magnetic field scanning area.

[0042] Once the axial position of the base 520 relative to the base plate 510 is determined, the base 520 is connected to the base 520 by a locking member 530, which passes through the base plate 510, thereby restricting the movement of the base 520 relative to the base plate 510 and fixing the relative position of the base 520 and the base plate 510 in the axial direction. Thus, under the drive of the second drive assembly 300, the mold 600 can be stably driven to move in the axial direction.

[0043] Furthermore, the base 520 includes a support plate 522 and two support bars 523 respectively connected to both sides of the support plate 522. The second drive assembly 300 is installed on the side of the support plate 522 away from the support bars 523. The bottom plate 510 is provided with two spaced guide grooves 511 that extend axially. The support bars 523 are partially inserted into the guide grooves 511 and are slidably connected to the groove wall of the guide grooves 511 axially, thereby guiding the movement of the base 520 relative to the bottom plate 510.

[0044] Furthermore, the mold 600 includes a movable mold 610 and a mold body 620. The mold body 620 is mounted on the base plate 510. The movable mold 610 is connected to the adjustment component 100 and passes through the mold body 620. The movable mold 610 extends out of the mold body 620. Thus, under the drive of the first drive component 210 and the second drive component 300, the movable mold 610 can be driven to move relative to the mold body 620 in the circumferential and axial directions to adjust the position of the movable mold 610.

[0045] See Figure 1 and Figure 2 In one embodiment, one of the base plate 510 and the base 520 is provided with a plurality of locking holes 512 spaced apart along the axial direction, and the other is provided with an elongated hole 521 extending along the axial direction. A locking member 530 passes through the locking holes 512 and the elongated hole 521 and is connected to the base 520 and the base plate 510 to stably define the relative position between the base 520 and the base plate 510. Preferably, the locking member 530 is a bolt.

[0046] See Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the adjustment component in a phantom adjustment device provided in an embodiment of this application. Figure 4This is a cross-sectional view of an adjustment component in a mold adjustment device provided in one embodiment of this application. In one embodiment, the adjustment component 100 includes an inner shaft 110, an outer shaft 120, and a fastener 130. The inner shaft 110 and the outer shaft 120 are coaxially nested, and one of the inner shaft 110 and the outer shaft 120 is connected to the drive component 200 for transmission. The other of the inner shaft 110 and the outer shaft 120 is used to connect to the mold 600. The fastener 130 is used to fix the relative axial position of the inner shaft 110 and the outer shaft 120.

[0047] Specifically, both the inner shaft 110 and the outer shaft 120 extend axially. Since the inner shaft 110 and the outer shaft 120 are coaxially nested, controlling their relative sliding in the axial direction allows for changes in the axial length of the adjusting assembly 100, thus enabling the driving portion within the drive assembly 200 to be moved away from the magnetic field scanning area. Fasteners 130 restrict the relative axial movement of the inner shaft 110 and the outer shaft 120, fixing their relative axial positions and ensuring stable adjustment of the mold 600's position under the drive of the drive assembly 200. The coaxial nesting of the inner shaft 110 and the outer shaft 120 ensures stable axial changes in the length of the adjusting assembly 100, thereby improving the adjustment accuracy of the mold adjusting device.

[0048] In other embodiments, the adjustment component 100 can also adjust the axial distance between the module 600 and the drive component 200 in other ways. For example, the adjustment component 100 includes a folding member, and the length of the adjustment component 100 in the axial direction can be adjusted by the various folding postures of the folding member.

[0049] See Figure 1 , Figure 3 and Figure 4 In one embodiment, the outer shaft 120 is provided with a fastening hole 160, a fastener 130 passes through the fastening hole 160 and is connected to the outer shaft 120, and the fastener 130 is used to abut against the inner shaft 110 to limit the relative axial movement of the inner shaft 110 and the outer shaft 120.

[0050] Specifically, the fastener 130 is threaded into the wall of the fastening hole 160, thereby enabling stable contact with the outer shaft 120 to stably limit the relative axial position of the inner shaft 110 and the outer shaft 120. This also allows for convenient installation and removal relative to the inner shaft 110, improving the efficiency of length changes in the adjusting assembly 100, and consequently improving the efficiency of axial spacing adjustment between the adjusting mold 600 and the drive assembly 200. Preferably, the fastener 130 is a bolt.

[0051] See Figure 1 , Figure 3 and Figure 4In one embodiment, the inner shaft 110 has a locking surface 170 on the side facing the fastening hole 160. The fastener 130 is used to abut against the locking surface 170 and fits against the locking surface 170, thereby increasing the frictional force of the relative movement between the fastener 130 and the locking surface 170 to stably limit the relative position of the inner shaft 110 and the outer shaft 120 in the axial direction.

[0052] Furthermore, the locking surface 170 is a plane and is located at the end of the outer shaft 120.

[0053] See Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment, the inner shaft 110 is provided with a fixing hole 190. One end of the inner shaft 110 away from the outer shaft 120 passes through the mold body 600 and is connected to the mold body 600 via a fixing member 180, so that the mold body 600 is connected to the adjusting assembly 100. Preferably, the fixing member 180 is a pin.

[0054] See Figure 1 and Figure 5 , Figure 5 This is a side view of a portion of the structure of a mold adjustment device provided in one embodiment of this application. In one embodiment, a first drive assembly 210 is driven to the end of the adjustment assembly 100 away from the mold 600, and the first drive assembly 210 is used to drive the adjustment assembly 100 to rotate about the axial direction; a second drive assembly 300 is driven to the first drive assembly 210, and the second drive assembly 300 is used to drive the first drive assembly 210 to move along the axial direction.

[0055] Specifically, the first driving component 210 drives the adjusting component 100 to rotate the mold 600 around the axial direction, thereby adjusting the circumferential position of the mold 600. The second driving component 300 drives the first driving component 210 to move along the axial direction, thereby moving the adjusting component 100 and the mold 600 along the axial direction, thereby adjusting the axial position of the mold 500.

[0056] See Figure 1 and Figure 5 In one embodiment, the first driving component 210 includes a first non-magnetic ultrasonic motor 211, which is connected to the second driving component 300 and the phantom 600. The first non-magnetic ultrasonic motor 211 is used to drive the adjustment component 100 to rotate about the axial direction. The second driving component 300 includes a second non-magnetic ultrasonic motor 311, which is connected to the first driving component 210. The second non-magnetic ultrasonic motor 311 is used to drive the first driving component 210 to move along the axial direction.

[0057] Specifically, both the first driving component 210 and the second driving component 300 are non-magnetic components, so that under a strong magnetic field, the first non-magnetic ultrasonic motor 211 and the second non-magnetic ultrasonic motor 311 can realize the normal rotation and movement of the phantom 600 in the axial direction, so that the phantom adjustment device can adapt to the magnetic field environment. For example, the phantom adjustment device in this application can be used in conjunction with a magnetic resonance imaging device. All other materials in the phantom adjustment device are non-magnetic materials.

[0058] In other embodiments, the driving components in the first driving assembly 210 and the second driving assembly 300 may also employ hydraulic or pneumatic driving methods.

[0059] See Figure 1 and Figure 5 In one embodiment, the mold adjustment device further includes a guide assembly 400, which includes a fixed part 410 and a sliding part 420. The sliding part 420 is connected to the first drive assembly 210 and is axially slidably connected to the fixed part 410.

[0060] Specifically, the fixing part 410 is mounted on the base 520 and is axially slidably connected to the fixing part 410 via the sliding part 420. The sliding part 420 is connected to the first drive assembly 210, so that when the second drive assembly 300 drives the first drive assembly 210 to move axially, it can provide guidance to improve the positioning and adjustment accuracy of the mold 600.

[0061] Among them, see Figure 5 In this embodiment, the guide component 400 is a linear guide rail. To improve guiding stability, it can also be a double linear guide rail. (See reference...) Figure 6 , Figure 6 This is a side view of a portion of the structure of a mold adjustment device provided in another embodiment of this application. In other embodiments, the guide assembly 400 can also be a combination of a sliding sleeve 430 and a guide shaft 440, that is, as long as it can guide the axial movement of the first drive assembly 210.

[0062] Furthermore, the base 520 is provided with limiting blocks 540 on both sides of the guide assembly 400 in the axial direction. The limiting blocks 540 are used to abut against the sliding part 420 to limit the sliding part 420 and prevent the sliding part 420 from sliding out of the fixing part 410.

[0063] See Figure 1 and Figure 2In one embodiment, the mold adjustment device further includes a connecting plate 220 and a guide platform 560. The guide platform 560 is provided with a guide hole 561. One end of the connecting plate 220 is connected to the second drive assembly 300, and the other end of the connecting plate 220 is connected to the first drive assembly 210. The connecting plate 220 passes through the guide hole 561, and both sides of the connecting plate 220 in the first direction are slidably connected to the hole wall of the guide hole 561, wherein the first direction is perpendicular to the axial direction.

[0064] Specifically, the guide platform 560 is mounted on the base 520. The connecting plate 220 is slidably connected to the walls of the guide holes 561 on both sides in the first direction, which limits the swaying of the connecting plate 220 in the first direction. This allows the second drive assembly 300 to stably drive the first drive assembly 210 to move axially, improving the adjustment accuracy of the mold body adjustment device. The guide platform 560 is positioned between the first drive assembly 210 and the second drive assembly 300.

[0065] The first direction can be any direction perpendicular to the axis. For example, in this embodiment, the first direction is the width direction of the base.

[0066] Furthermore, the side of the connecting plate 220 facing away from the first drive assembly 210 is connected to the sliding part 420, that is, the connection with the first drive assembly 210 is achieved through the connecting plate 220, so as to stably realize the axial movement of the first drive assembly 210.

[0067] See Figure 1 and Figure 2 In one embodiment, the second drive assembly 300 includes a second drive member 310, a transmission member 320, and a sliding block 330. The transmission member 320 is tractively connected to the second drive member 310, and the sliding block 330 is tractively connected to the transmission member 320 and connected to the first drive assembly 210. The second drive member 310 is used to drive the transmission member 320 to rotate about the axial direction, so as to drive the sliding block 330 to move axially relative to the transmission member 320.

[0068] Specifically, the sliding block 330 is connected to the connecting plate 220 and sleeved on the transmission member 320, and threadedly connected to the transmission member 320. Thus, under the drive of the second driving member 310, the transmission member 320 rotates stably around the axial direction, and through threaded transmission, stably drives the sliding block 330 to move the connecting plate 220 axially. The sliding block 330 can be a backlash-free nut to reduce the meshing clearance between the transmission member 320 and the sliding block 330. Preferably, the second driving member 310 is a second non-magnetic ultrasonic motor.

[0069] In this embodiment, the transmission component 320 is a lead screw; in other embodiments, the transmission component 320 may also be a gear or rack.

[0070] In this application, the first driving component 210 and the second driving component 310 can be independently controlled in real time to realize real-time magnetic resonance scanning of the phantom 600 at various positions and angles.

[0071] Furthermore, the mold body adjustment device also includes a support platform 550, which is disposed on the base 520. The transmission component 320 passes through the support platform 550, and the support platform 550 is used to support the transmission component 320. The end of the transmission component 320 away from the second driving component 310 passes through the guide platform 560 to stably support the transmission component 320, thereby accurately driving the sliding block 330 to move axially and improving the adjustment accuracy of the mold body adjustment device.

[0072] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This application also provides a magnetic resonance scanning device, including the phantom adjustment device described above.

[0073] In this application, the first driving component 210 drives the phantom 600 to rotate around the axial direction, thereby adjusting the circumferential position of the phantom 600. The second driving component 300 drives the phantom 600 to move along the axial direction, thereby adjusting the axial position of the phantom 600. This allows the phantom 600 to simulate the real condition of organs under different positions. The adjusting component 100 can adjust the axial distance between the phantom 600 and the driving component 200, which can move the driving part of the driving component 200 away from the magnetic field scanning area, thereby reducing the influence of the driving part in the driving component 200 on the magnetic field and improving the accuracy of the phantom magnetic resonance scanning.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A phantom adjustment device, characterized in that, The phantom adjustment device includes a drive assembly (200) and an adjustment assembly (100); the drive assembly (200) includes a first drive assembly (210) and a second drive assembly (300); The first driving component (210) is used to drive the mold (600) to move along the axial direction of the mold (600); The second drive assembly (300) is used to drive the mold (600) to rotate about the axis; The adjustment component (100) is connected to the mold (600) and the drive component (200), and the adjustment component (100) is used to adjust the distance between the mold (600) and the drive component (200) in the axial direction.

2. The phantom adjustment device according to claim 1, characterized in that, The adjustment assembly (100) includes an inner shaft (110), an outer shaft (120), and a fastener (130). The inner shaft (110) and the outer shaft (120) are coaxially nested, and one of the inner shaft (110) and the outer shaft (120) is connected to the drive assembly (200) for transmission. The other of the inner shaft (110) and the outer shaft (120) is used to connect to the mold body (600). The fastener (130) is used to fix the relative position of the inner shaft (110) and the outer shaft (120) in the axial direction.

3. The phantom adjustment device according to claim 2, characterized in that, The outer shaft (120) is provided with a fastening hole (160), and the fastener (130) passes through the fastening hole (160) and is connected to the outer shaft (120). The fastener (130) is used to abut against the inner shaft (110) to limit the relative movement of the inner shaft (110) and the outer shaft (120) in the axial direction.

4. The phantom adjustment device according to claim 3, characterized in that, The inner shaft (110) has a locking surface (170) on the side facing the fastening hole (160), and the fastener (130) is used to abut against the locking surface (170) and fit against the locking surface (170).

5. The phantom adjustment device according to any one of claims 1-4, characterized in that, The first drive assembly (210) is connected to the end of the adjustment assembly (100) away from the mold (600) in a transmission connection, and the first drive assembly (210) is used to drive the adjustment assembly (100) to rotate about the axis; The second drive assembly (300) is connected to the first drive assembly (210) and is used to drive the first drive assembly (210) to move along the axial direction.

6. The phantom adjustment device according to claim 5, characterized in that, The first driving component (210) includes a first non-magnetic ultrasonic motor (211), which is connected to the second driving component (300) and the phantom (600). The first non-magnetic ultrasonic motor (211) is used to drive the adjustment component (100) to rotate about the axis. The second drive assembly (300) includes a second non-magnetic ultrasonic motor (311), which is connected to the first drive assembly (210) and is used to drive the first drive assembly (210) to move along the axial direction.

7. The phantom adjustment device according to claim 5, characterized in that, The mold adjustment device further includes a guide assembly (400), which includes a fixed part (410) and a sliding part (420). The sliding part (420) is connected to the first drive assembly (210) and is slidably connected to the fixed part (410) along the axial direction.

8. The phantom adjustment device according to claim 5, characterized in that, The mold adjustment device further includes a connecting plate (220) and a guide platform (560). The guide platform (560) is provided with a guide hole (561). One end of the connecting plate (220) is connected to the second drive assembly (300), and the other end of the connecting plate (220) is connected to the first drive assembly (210). The connecting plate (220) passes through the guide hole (561), and both sides of the connecting plate (220) in the first direction are slidably connected to the hole wall of the guide hole (561), wherein the first direction is perpendicular to the axial direction.

9. The phantom adjustment device according to any one of claims 1-4, characterized in that, The mold body adjustment device further includes a base plate (510), a base (520), and a locking member (530). The base plate (510) is used to support the mold body (600). The second drive assembly (300) is installed on the base (520). The base (520) is slidably connected to the base plate (510) along the axial direction. The locking member (530) is connected to the base (520) and passes through the base plate (510) to restrict the movement of the base (520) relative to the base plate (510).

10. A magnetic resonance scanning device, characterized in that, Includes the phantom adjustment device as described in any one of claims 1-9.

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