Magnetic resonance coil device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a magnetic resonance coil device which comprises a base, the top of the base is provided with a supporting face used for supporting the trunk of the human body, a cavity is formed below the supporting face, and the cavity is communicated with the space above the supporting face through an opening formed in the supporting face; the enclosing assembly comprises a plurality of side plates, a containing part used for containing the mammary gland part of the human body is formed between the side plates, and at least part of the side plates are movably arranged relative to the base; the plurality of coil units are arranged on the base and / or the enclosing assembly, and each coil unit is arranged around the accommodating part in an enclosing manner. According to the breast coil, through the enclosing assembly with the adjustable side plates and the multi-coil unit surrounding the containing part, the defects of an existing breast coil in adaptability, comfort and imaging quality are effectively overcome.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a magnetic resonance coil device. Background Technology

[0002] Magnetic resonance imaging (MRI) is a technique that uses the magnetic resonance phenomenon to create images. An MRI system typically includes a cavity superconducting magnet, gradient coils surrounding the superconducting magnet, a cavity body coil located within the gradient coils, an examination table for placing the patient, and local coils for covering specific areas of the patient, such as head and neck coils, spine coils, wrist coils, body coils, and so on. In clinical MRI applications, suitable local coils result in better image quality, easy coil placement improves operator efficiency, and adjustable lumens enhance patient comfort.

[0003] Breast coils are primarily used in two main scenarios: breast MRI and biopsy. Dedicated imaging coils offer advantages such as high signal-to-noise ratio and rapid scanning, but their enclosed design can compress larger breasts, leading to artifacts or even preventing scanning. Biopsy-specific coils, while adaptable to breasts of different sizes and easy to operate, suffer from poorer image quality and lower scanning efficiency. Coils compatible with both biopsy and imaging utilize replaceable components, but their complex structure results in bulkiness, cumbersome assembly, and increased operation time and difficulty of use. Existing coils generally suffer from deficiencies in adaptability, performance, or convenience. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a magnetic resonance coil device that can balance imaging quality and versatility.

[0005] To achieve the above and other related objectives, this utility model provides a magnetic resonance coil device, comprising:

[0006] The base has a support surface at the top for supporting the human torso, and a cavity below the support surface. The cavity communicates with the space above the support surface through an opening on the support surface.

[0007] An enclosure assembly is disposed within the cavity. The enclosure assembly includes a plurality of side plates, and a receiving portion for accommodating a human breast tissue is formed between each side plate. The receiving portion is located below the opening. At least a portion of the side plates are movably disposed relative to the base, and the volume of the receiving portion changes with the movement of the side plates.

[0008] A coil unit, a plurality of said coil units are disposed on the base and / or the enclosure assembly, and each said coil unit surrounds the receiving portion.

[0009] In an optional embodiment of the present invention, the enclosure component includes a first side plate movably disposed relative to the base along a first direction, the first side plate being disposed on at least one side of the receiving portion in the first direction, the first direction being the head-to-toe direction of a human body supported on the support surface.

[0010] In an optional embodiment of this utility model, a first sliding component for limiting the movement path of the first side plate is provided between the first side plate and the base. The first sliding component includes a first slide rail and a first slide block that are slidably engaged. The first slide rail is arranged along the first direction. One of the first slide rail and the first slide block is connected to the first side plate, and the other is connected to the base.

[0011] In an optional embodiment of this utility model, a first locking mechanism is provided between the first side plate and the base, and the first locking mechanism is configured to switch between the following work positions:

[0012] The locking position at least prevents the first side plate from moving away from the receiving part; and

[0013] Unlock the workstation to allow the first side plate to move freely back and forth along the first direction.

[0014] In an optional embodiment of the present invention, the first locking mechanism is configured such that, in response to the locking position, the first locking mechanism prevents the first side plate from moving away from the receiving portion and enables the first side plate to move towards the receiving portion.

[0015] In an optional embodiment of the present invention, the first locking mechanism includes a first rack and a first tooth block disposed opposite to each other. The length direction of the first rack is parallel to the first direction. One of the first rack and the first tooth block is disposed on the first side plate, and the other is disposed on the base. At least one of the first rack and the first tooth block is movably disposed in a manner that allows it to engage or disengage with the other.

[0016] In an optional embodiment of the present invention, the first rack is fixedly disposed relative to the base, the first tooth block is installed in a manner that enables it to move synchronously with the first side plate along the first direction, and the first tooth block is assembled to be able to generate a movement that is not parallel to the first direction relative to the first side plate, so that the first tooth block can engage or disengage with the first rack.

[0017] In an optional embodiment of this utility model, the first toothed block is rotatably disposed relative to the first side plate.

[0018] In an optional embodiment of the present invention, an elastic element is further included. The elastic element is assembled to drive the first tooth block to mesh with the first rack with its elastic force. The first tooth block is provided with a trigger part, which is configured to drive the first tooth block to separate from the first rack when it is subjected to an external force.

[0019] In an optional embodiment of the present invention, the tooth profiles of the first rack and the first tooth block are configured such that when the first tooth block meshes with the first rack, it can prevent the first side plate from moving away from the receiving portion, and when the first side plate moves towards the receiving portion, it can automatically separate the meshing first tooth block and the first rack.

[0020] In an optional embodiment of the present invention, at least two first side plates are provided, and the at least two first side plates are respectively disposed on both sides of the receiving portion along the first direction.

[0021] In an optional embodiment of this utility model, at least two first side plates are provided, and the at least two first side plates are respectively arranged on both sides of the receiving part along the first direction. The first slide rail is fixedly arranged relative to the base, and the first slide block is fixedly arranged relative to the first side plate. The two first slide blocks corresponding to the two first side plates share the same first slide rail.

[0022] In an optional embodiment of the present invention, the first side plate includes a base movably connected to the base and a replaceable portion detachably connected to the base, the replaceable portion defining at least a portion of the first side plate facing the receiving portion.

[0023] In an optional embodiment of this invention, at least one side of the replaceable portion facing the receiving portion is made of a flexible material.

[0024] In an optional embodiment of the present invention, the enclosure component includes a second side plate, which is disposed on the operating side of the receiving portion. The operating side is the side of the receiving portion away from the center of the supported human torso in a second direction, where the second direction is the left-right direction of the supported human torso. The second side plate is movably connected to the base so that the operating side of the receiving portion can be closed or exposed.

[0025] In an optional embodiment of this utility model, the second side plate is rotatably disposed relative to the base along an axis perpendicular to the second direction.

[0026] In an optional embodiment of the present invention, the second side plate is assembled to be able to translate along the second direction.

[0027] In an optional embodiment of this utility model, the base is provided with a second slide rail, the second slide rail is parallel to the second direction, the second side plate is provided with a second slide block, the second slide block is slidably connected to the second slide rail, and the second side plate is rotatably connected to the second slide block.

[0028] In an optional embodiment of the present invention, a second locking mechanism for limiting the rotation angle of the second side plate is provided between the second side plate and the base or between the second side plate and the slide block. The second locking mechanism is configured to hold the second side plate at at least a first preset angle and to release the second side plate from at least the first preset angle, wherein the first preset angle is the angle at which the second side plate closes the operating side.

[0029] In an optional embodiment of this utility model, the second locking mechanism includes a third slide rail parallel to the second slide rail disposed on the base, and a third slide block disposed on the second side plate; in response to the second side plate at the first preset angle, the third slide block slides in cooperation with the third slide rail; the third slide block and the third slide rail are configured such that when the second side plate is translated to a preset position along the second direction, the third slide block disengages from the third slide rail.

[0030] In an optional embodiment of the present invention, the second locking mechanism includes a locking groove provided on one of the second side plate and the second slide, and a locking pin provided on the other of the second side plate and the second slide, the locking pin being movably disposed relative to the second side plate or the second slide; in response to the second side plate at the first preset angle, the locking pin is configured to engage or disengage with the locking groove.

[0031] In an optional embodiment of the present invention, a retaining mechanism is provided between the second side plate and the base or between the second slide and the base. The retaining mechanism is configured to hold the second side plate in multiple positions in the second direction and to release the second side plate from the multiple positions.

[0032] In an optional embodiment of the present invention, the retaining mechanism includes a wave-like surface disposed on the base along the second direction, and an elastic telescopic component disposed on the second side plate or the second slide opposite to the wave-like surface.

[0033] In an optional embodiment of the present invention, the retaining mechanism includes a second rack and a second tooth block. The second rack is arranged along the second direction and is fixedly arranged relative to the base. The second tooth block is installed in a manner that enables it to move synchronously with the second side plate along the second direction. The second tooth block is assembled to be able to generate a non-parallel movement relative to the second side plate or the second slide, so that the second tooth block can engage or disengage with the second rack.

[0034] In an optional embodiment of the present invention, the tooth profiles of the second rack and the second tooth block are configured such that when the second tooth block meshes with the second rack, it can prevent the second side plate from moving away from the receiving portion, and when the second side plate moves towards the receiving portion, it can automatically separate the meshing second tooth block and the second rack.

[0035] In an optional embodiment of the present invention, the upper end of the second side plate is provided with an extension that is inclined away from the receiving portion.

[0036] In an optional embodiment of this invention, the extension is made of an elastic material, or the side of the extension facing the supported human body is made of a flexible material.

[0037] In an optional embodiment of this utility model, an observation window is provided on the second side plate.

[0038] In an optional embodiment of the present invention, the coil unit includes a first coil unit disposed within the second side plate; a second coil unit disposed on the side of the receiving portion opposite to the second side plate; a third coil unit disposed above and surrounding the receiving portion; and a fourth coil unit disposed below and surrounding the receiving portion.

[0039] The technical advantages of this invention are as follows: This invention effectively solves the shortcomings of existing breast coils in terms of adaptability, comfort, and imaging quality by using an enclosure component with adjustable side plates and a multi-coil unit surrounding the receiving part. First, the adjustable receiving part volume can adapt to breasts of different sizes, avoiding compression artifacts and improving patient comfort, thus improving the applicability of the breast coil. Second, the distributed coil unit layout takes into account both high signal-to-noise ratio and fast scanning performance, achieving synergistic optimization of imaging quality, ease of operation, and breast size adaptability, making it particularly suitable for the dual clinical needs of breast MRI examination and biopsy. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the magnetic resonance coil device in use provided in an embodiment of this utility model;

[0041] Figure 2 This is a perspective view of the magnetic resonance coil device provided in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the coil unit distribution of the magnetic resonance coil device provided in an embodiment of this utility model;

[0043] Figure 4 This is a schematic diagram of the internal structure of the magnetic resonance coil device provided in the second direction according to an embodiment of the present invention;

[0044] Figure 5 yes Figure 4 Partial sectional view of I;

[0045] Figure 6 This is an exploded view of the first side plate provided in an embodiment of the present invention;

[0046] Figure 7 This is a perspective view of the first side plate provided in an embodiment of the present utility model;

[0047] Figure 8 This is a partial structural schematic diagram of the magnetic resonance coil device provided in the first direction according to an embodiment of the present invention;

[0048] Figure 9 This is a partial cross-sectional view of the magnetic resonance coil device provided in an embodiment of the present invention in the second direction;

[0049] Figure 10 yes Figure 9 AA section view;

[0050] Figure 11 This is a perspective view of a magnetic resonance coil device provided in another embodiment of the present invention;

[0051] Figure 12 This is a perspective view of the magnetic resonance coil device provided in another embodiment of the present invention, with the support surface removed.

[0052] Figure 13 This is a three-dimensional structural schematic diagram of the second side plate provided in another embodiment of the present invention;

[0053] Figure 14 This is a three-dimensional structural diagram of the first side plate provided in another embodiment of the present invention;

[0054] Figure 15 This is a schematic diagram of the coil unit flattened state of the magnetic resonance coil device provided in another embodiment of this utility model. Detailed Implementation

[0055] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0056] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0057] Please see Figure 1 As shown, the magnetic resonance coil device provided by this utility model is used for magnetic resonance imaging of the breast. It includes a base 10, on which a receiving part 20 is provided. When the patient is supported on the base 10 in a prone position, the patient's breast is located within the receiving part 20. Coil units are distributed around the receiving part 20, and the coil units are used to receive magnetic resonance signals from the breast and its surrounding areas. It should be understood that there are two receiving parts 20, and these two receiving parts 20 and their surrounding auxiliary structures can be completely symmetrical. Therefore, the following specific embodiments of this utility model mainly describe the structure and working principle of one of the receiving parts 20.

[0058] Please see Figure 2 , 3 As shown, the magnetic resonance coil device provided in the embodiment of this utility model includes a base 10, an enclosure assembly, and a coil unit.

[0059] Please see Figure 1 , 2 As shown, the top of the base 10 is provided with a support surface 11 for supporting the human torso. A cavity 101 is provided below the support surface 11, and the cavity 101 communicates with the space above the support surface 11 through an opening 12 on the support surface 11. In a specific embodiment, the support surface 11 can be configured as an ergonomic curved surface, and the entire surface can have a certain angle of inclination to balance the force on the chest and abdomen, improving comfort. A slope opposite to the inclination direction of the support surface 11 can be provided on the side of the support surface 11 near the head; this area constitutes an arm support area, which can support the arm when the hand is swung forward, improving comfort.

[0060] Please see Figure 2As shown, the enclosure assembly is disposed within the cavity 101. The enclosure assembly includes a plurality of side plates, and a receiving portion 20 for accommodating a human breast tissue is formed between each of the side plates. The receiving portion 20 is located below the opening 12. At least a portion of the side plates are movably disposed relative to the base 10, and the volume of the receiving portion 20 changes with the movement of the side plates.

[0061] Please see Figure 3 As shown, a plurality of the coil units are disposed on the base 10 and / or the enclosure assembly, and each of the coil units surrounds the receiving portion 20.

[0062] This invention effectively solves the shortcomings of existing breast coils in terms of adaptability, comfort, and imaging quality through an enclosure assembly with adjustable side plates and a multi-coil unit surrounding the receiving part 20. First, the adjustable volume of the receiving part 20 can adapt to breasts of different sizes, avoiding compression artifacts and improving patient comfort, thus improving the applicability of the breast coil. Second, the distributed coil unit layout takes into account both high signal-to-noise ratio and fast scanning performance, achieving synergistic optimization of imaging quality, ease of operation, and breast size adaptability, making it particularly suitable for the dual clinical needs of breast MRI examination and biopsy.

[0063] Please see Figure 2 , 4 As shown, in an optional embodiment of this utility model, the enclosure component includes a first side plate 21 movably disposed relative to the base 10 along a first direction X. The first side plate 21 is disposed on at least one side of the receiving portion 20 in the first direction X, which is the head-to-toe direction of the human body supported on the support surface 11. This further embodiment achieves adaptive fixation of the breast in the scanning direction through the first side plate 21, which is adjustable along the head-to-toe direction. The first side plate 21 can be flexibly adjusted according to the size of the breast, providing stable support in the head-to-toe direction. This avoids excessive compression of traditional closed coils and effectively limits the longitudinal displacement of the breast during scanning. Combined with the ergonomic support surface 11 of the base 10, it significantly reduces motion artifacts caused by breathing or body position changes, while maintaining a natural anatomical shape, providing a stable geometric reference for high-resolution imaging.

[0064] Please see Figure 6 , 7As shown, in an optional embodiment of this utility model, a first sliding component for limiting the movement path of the first side plate 21 is provided between the first side plate 21 and the base 10. The first sliding component includes a first slide rail 212 and a first slide block 211 that are slidably engaged. The first slide rail 212 is disposed along the first direction X, the first slide block 211 is connected to the first side plate 21, and the first slide rail 212 is connected to the base 10. It should be understood that the limiting method between the first side plate 21 and the base 10 is not unique. For example, in some other embodiments, the slide rail can be disposed on the first side plate 21, while the slide block can be disposed on the base 10. This embodiment achieves stable and precise sliding adjustment of the first side plate 21 along the head-to-toe direction through the setting of the first sliding component; the cooperation structure of the slide rail and the slide seat ensures the linearity and smoothness of the side plate movement, which can quickly adjust the fixed position according to the patient's breast size and maintain rigid support during scanning; the modular sliding design enhances the assembly flexibility and provides the operator with an intuitive linear adjustment path, which not only improves the efficiency of breast positioning, but also further suppresses the generation of motion artifacts through mechanical stability.

[0065] Please see Figure 5 As shown, in an optional embodiment of this utility model, a first locking mechanism is provided between the first side plate 21 and the base 10. The first locking mechanism is configured to switch between the following positions: a locking position, which at least prevents the first side plate 21 from moving away from the receiving part 20; and an unlocking position, which allows the first side plate 21 to move freely back and forth along the first direction X. This further embodiment achieves reliable switching between fixing and adjusting the first side plate 21 through the setting of the first locking mechanism; the locking position can reliably prevent the first side plate 21 from retracting, ensuring that the breast is always in a stable and compressed state during the scanning process, effectively eliminating displacement artifacts caused by loosening; the unlocking position allows for quick adjustment of the side plate position to adapt to the needs of different patients, greatly improving operating efficiency, ensuring imaging quality while taking into account the convenience of clinical operation.

[0066] Please see Figure 5As shown, in an optional embodiment of this utility model, the first locking mechanism is configured such that, in response to the locking position, the first locking mechanism prevents the first side plate 21 from moving away from the receiving portion 20, and allows the first side plate 21 to move towards the receiving portion 20. This further embodiment achieves more precise side plate movement control through a one-way locking mechanism; in the locking position, the first side plate 21 is allowed to move unidirectionally towards the receiving portion 20, allowing the operator to further fine-tune the degree of compression while maintaining the basic locking force. This ensures flexible adaptive fixation of the breast to reduce motion artifacts, while avoiding the excessive compression problem caused by traditional rigid locking. It significantly improves comfort while maintaining scanning stability, and eliminates the need for repeated unlocking and adjustment, thus optimizing the workflow.

[0067] In some other embodiments, the first locking structure may also be configured to prevent the first side plate 21 from moving in both directions in the locking position, so as to achieve the basic fixing function of the first side plate 21.

[0068] Please see Figure 5 As shown, in an optional embodiment of the present invention, the first locking mechanism includes a first rack 214 and a first toothed block 213 disposed opposite to each other. The length direction of the first rack 214 is parallel to the first direction X. The first toothed block 213 is disposed on the first side plate 21. The two can be directly connected or indirectly connected. For example, the first toothed block 213 can be mounted on the first slide block 211, and the first rack 214 can be disposed on the base 10. Similarly, the two can be directly connected or indirectly connected. For example, the first rack 214 can be disposed on the first slide rail 212. The first toothed block 213 is movably disposed in a manner that allows it to engage or disengage with the first rack 214. It should be understood that the installation method of the first rack 214 and the first toothed block 213 is not unique. For example, in some other embodiments, the first toothed block 213 can be set on the base 10 and the first rack 214 can be set on the first side plate 21. The opening and closing method between the first rack 214 and the first toothed block 213 is also not unique. For example, the first rack 214 can be movably set, or the first rack 214 and the first toothed block 213 can be movably set simultaneously. This further embodiment achieves a reliable locking function through the meshing and separation mechanism of the rack and the toothed block. Utilizing the self-locking characteristics of the sawtooth structure, the first side plate 21 is automatically prevented from retracting when locked, ensuring the absolute stability of breast positioning during scanning. The rack / toothed block cooperation enhances the adaptability of the mechanism, and its mechanical interlocking method is more reliable than friction locking, eliminating the risk of fatigue failure of traditional elastic locking components and achieving millimeter-level precise micro-adjustment.

[0069] It should be understood that the toothed block / rack is not the only feasible solution to achieve the locking function. For example, in some other embodiments, the basic multi-point locking function can also be achieved by using locating pins and multiple spaced locating holes, or by using the friction between the preload bolt and the track surface to achieve the basic linear locking function.

[0070] Please see Figure 5 As shown, in an optional embodiment of this utility model, the first tooth block 213 is installed in a manner that allows it to move synchronously with the first side plate 21 along the first direction X, and the first tooth block 213 is assembled to be able to move relative to the first side plate 21 in a manner that is not parallel to the first direction X, so that the first tooth block 213 can engage or disengage with the first rack 214; for example, the first tooth block 213 is rotatably configured relative to the first side plate 21. This further embodiment significantly improves the convenience of operation through the rotational unlocking design of the tooth block; the rotating tooth block can be quickly separated and unlocked with just one hand, avoiding the disadvantage of traditional locking mechanisms requiring two-handed coordination; it retains the reliability of mechanical locking and allows technicians to easily complete the entire process of unlocking-adjusting-relocking with one hand. The installation method of the first tooth block 213 is not unique. For example, in some other embodiments, the first tooth block 213 can also be slidably configured relative to the first side plate 21 along the vertical direction of the first direction X, in which case the unlocking operation of the first locking mechanism can be achieved by pressing or pulling.

[0071] Please see Figure 5 As shown, in an optional embodiment of this utility model, an elastic element 215 is further included. The elastic element 215 is assembled to drive the first toothed block 213 to mesh with the first rack 214. The first toothed block 213 is provided with a trigger part 2131, which is configured to drive the first toothed block 213 to separate from the first rack 214 when it is subjected to an external force. This further embodiment achieves convenient operation of automatic engagement and one-button unlocking through the cooperation of the elastic element 215 and the trigger part 2131. The elastic element 215 provides a continuous and stable engagement holding force to ensure the reliability of locking during scanning, while the setting of the trigger part 2131 allows the operator to instantly unlock the device with just one finger, further simplifying the operation process.

[0072] Please see Figure 5As shown, in an optional embodiment of this utility model, the teeth of the first rack 214 and the first tooth block 213 are configured such that when the first tooth block 213 engages with the first rack 214, it can prevent the first side plate 21 from moving away from the receiving portion 20, and when the first side plate 21 moves towards the receiving portion 20, it can automatically separate the meshing first tooth block 213 and the first rack 214. Specifically, for example, the teeth can be set as a serrated structure with one side vertical and the other side inclined. This further embodiment achieves a reliable one-way locking function through the meshing and separating mechanism of the rack and tooth block; utilizing the self-locking characteristic of the serrated structure, it automatically prevents the first side plate 21 from retracting in the locking position, ensuring the absolute stability of breast positioning during scanning; at the same time, it allows for gradual adjustment of positive pressure, enabling the operator to optimize the pressure force in real time according to the characteristics of breast tissue.

[0073] Please see Figure 4 As shown, in an optional embodiment of this utility model, at least two first side plates 21 are provided, and at least two first side plates 21 are respectively arranged on both sides of the receiving portion 20 along the first direction X. This further embodiment achieves bidirectional adaptive fixation of the breast through the symmetrical arrangement of the two first side plates 21; the independently adjustable first side plates 21 on both sides can accurately clamp according to the actual position of the breast in the head-to-foot direction of different patients, forming a balanced distribution of pressure force, which not only avoids tissue distortion and deformation caused by unilateral pressure, but also significantly reduces the risk of breast displacement in the head-to-foot direction during scanning through symmetrical constraints. In some alternative embodiments, a single first side plate 21 can also be provided to achieve basic clamping and spatial adjustment functions.

[0074] Please see Figure 14 As shown, in an optional embodiment of this utility model, the two first slide blocks 211 corresponding to the two first side plates 21 share the same first slide rail 212. This further embodiment achieves a dual improvement in compactness and synchronization accuracy through the dual-side slide block common rail design; the shared slide rail structure not only saves installation space, but also ensures the parallel movement accuracy of the two first side plates 21 through a single reference rail.

[0075] Please see Figure 6 , 7As shown, in an optional embodiment of this utility model, the first side plate 21 includes a base 2101 movably connected to the base 10, and a replaceable portion 2102 detachably connected to the base 2101. The replaceable portion 2102 defines at least a portion of the first side plate 21 facing the receiving portion 20. This further embodiment significantly improves the clinical adaptability of the breast coil through the modular design of the replaceable portion 2102; the matching replaceable portion 2102 can be quickly replaced according to the different breast sizes and morphological characteristics of different patients, achieving personalized adaptation and avoiding excessive pressure.

[0076] In an optional embodiment of this invention, at least one side of the replaceable portion 2102 facing the receiving portion 20 is made of a flexible material. This further embodiment significantly improves patient comfort through the design of the flexible contact surface.

[0077] Please see Figure 2 , 8 As shown in Figures 11 and 13, in an optional embodiment of this utility model, the enclosure component includes a second side plate 22, which is disposed on the operating side of the receiving portion 20. The operating side is the side of the receiving portion 20 away from the center of the supported human torso in the second direction Y, where the second direction Y is the left-right direction of the supported human torso. The second side plate 22 is movably connected to the base 10 so that the operating side of the receiving portion 20 can be closed or exposed. A coil unit is provided inside the second side plate 22. This further embodiment achieves multi-dimensional breast positioning optimization through the design of the second side plate 22, which can be opened and closed on the operating side. After the first side plate 21 completes the basic fixation in the head-to-foot direction, the technician can manually position the breast by opening and closing the second side plate 22, further improving the imaging quality and facilitating live puncture operations.

[0078] Please see Figure 8 As shown, in an optional embodiment of this utility model, the second side plate 22 is rotatably disposed relative to the base 10 along an axis perpendicular to the second direction Y. In a specific embodiment, the second side plate 22 is rotatably disposed along a horizontal axis. This further embodiment achieves rapid opening and closing of the second side plate 22 through a horizontal pivot design; the horizontal rotation structure allows the second side plate 22 to open and close smoothly at a large angle, facilitating single-handed operation by the technician. While ensuring the flexibility of manual positioning of the breast in the left and right directions, it avoids the limitation of operating space imposed by a sliding side plate. This flip-top design can fully expose the operating area for easy adjustment when open, and maintain complete signal coverage through the built-in coil unit when closed, significantly improving the efficiency of multi-angle positioning and imaging preparation of the breast. In other embodiments, the second side plate 22 can also be rotatably disposed along a vertical axis, or the second side plate 22 can be configured as a vertical sliding structure to achieve basic opening and closing functions.

[0079] Please see Figure 8 , 10 As shown, in an optional embodiment of this utility model, the second side plate 22 is assembled to be able to translate along the second direction Y. This further embodiment achieves adjustable compression function in the left and right directions through the translational design of the second side plate 22; the translational structure allows the second side plate 22 to be precisely adjusted in the horizontal direction according to the actual position of the breast, and forms a three-dimensional positioning effect through lateral pushing combined with head-to-toe fixation; this design not only retains the operation window for manual positioning, but also provides active lateral pressure force when closed, suppressing displacement in the left and right directions, and further improving imaging quality.

[0080] Please see Figure 8-10 As shown in Figure 13, in an optional embodiment of this utility model, the base 10 is provided with a second slide rail 222, which is parallel to the second direction Y. The second side plate 22 is provided with a second slide block 221, which is slidably connected to the second slide rail 222, and the second side plate 22 is rotatably connected to the second slide block 221. This further embodiment achieves multi-degree-of-freedom adjustment of the second side plate 22 through a composite motion design of the slide rail and the rotating shaft. The slide rail structure ensures the translational accuracy and smoothness of the second side plate 22 in the left and right directions, while the rotating shaft connection retains the quick opening and closing function of the side plate. This combined motion mechanism not only meets the precise control requirements of the horizontal compression force of the breast, but also ensures the direct accessibility of the operating side.

[0081] Please see Figure 8-10 As shown in Figure 13, in an optional embodiment of this utility model, a second locking mechanism for limiting the rotation angle of the second side plate 22 is provided between the second side plate 22 and the base 10 or between the second side plate 22 and the slide. The second locking mechanism is configured to hold the second side plate 22 at at least a first preset angle and to release the second side plate 22 from at least the first preset angle, where the first preset angle is the angle at which the second side plate 22 closes the operating side. This further embodiment achieves precise control of the opening and closing angle of the second side plate 22 through the setting of the second locking mechanism. When the second side plate 22 rotates to the first preset angle that closes the operating side, the locking mechanism can maintain this closed state, ensuring the absolute stability of the side plate position during scanning and avoiding accidental opening due to vibration or accidental contact. At the same time, it allows for quick release of the lock for manual adjustment when needed, which not only meets the requirements for mechanical stability during imaging but also retains the necessary flexibility for clinical operation, significantly improving work efficiency and operational reliability.

[0082] Please see Figure 8-10As shown, in an optional embodiment of this utility model, the second locking mechanism includes a third slide rail 224 disposed on the base 10 and parallel to the second slide rail 222, and a third slide block 223 disposed on the second side plate 22; in response to the second side plate 22 at the first preset angle, the third slide block 223 slides in cooperation with the third slide rail 224; the third slide block 223 and the third slide rail 224 are configured such that when the second side plate 22 is translated along the second direction Y to a preset position, the third slide block 223 disengages from the third slide rail 224. This further embodiment achieves coordinated control of the translation and rotation of the second side plate 22 through the linkage design of the third slide rail 224 and the third slide block 223. When the second side plate 22 is in the closed state, the cooperation between the third slide block 223 and the slide rail forms a dual guide, enhancing the stability of the side plate when moving left and right. The automatic disengagement design after translation to the preset position ensures that the side plate can be freely rotated and opened. This mechanical interlocking structure not only ensures the accuracy of the side plate translation in the closed state, but also realizes the automatic switching of the operation state, enabling technicians to smoothly complete the translation adjustment-flipping operation process during breast positioning, improving operation efficiency and reliability.

[0083] Please see Figure 13 As shown, in an optional embodiment of the present invention, the second locking mechanism includes a locking groove 2211 provided on one of the second side plate 22 and the second slide block 221, and a locking pin 228 provided on the other of the second side plate 22 and the second slide block 221. The locking pin 228 is movably disposed relative to the second side plate 22 or the second slide block 221. In response to the second side plate 22 at the first preset angle, the locking pin 228 is configured to engage or disengage with the locking groove 2211. In a specific embodiment, the locking groove 2211 is disposed on the second slide block 221, the locking pin 228 is disposed on the second side plate 22, and the locking pin 228 is capable of engaging or disengaging with the locking groove 2211. Figure 13The device moves up and down as shown. A return spring can be provided between the locking pin 228 and the second side plate 22. The spring force of the return spring can keep the locking pin 228 in the locking groove 2211. When unlocking is required, the locking pin 228 can be manually lifted to separate it from the locking groove 2211. It should be understood that the installation positions of the locking pin 228 and the locking groove 2211 can be interchanged. For example, the locking pin 228 can be set on the second slide 221, and the locking groove 2211 can be set on the second side plate 22. This further embodiment achieves reliable locking and quick release of the second side plate 22 in the closed state through the elastic engagement mechanism of the locking pin 228 and the locking groove 2211; the automatic engagement function maintained by the spring preload ensures that the second side plate 22 obtains stable mechanical locking in the closed position, effectively preventing accidental displacement during the scanning process; at the same time, the simple lifting pin unlocking design allows the operator to easily complete the release action, greatly improving the convenience of operation while ensuring positioning accuracy.

[0084] Please see Figure 10 , 13 As shown, in an optional embodiment of this utility model, a retaining mechanism is provided between the second side plate 22 and the base 10 or between the second slide 221 and the base 10. The retaining mechanism is configured to hold the second side plate 22 at multiple positions in the second direction Y and to release the second side plate 22 from the multiple positions. This further embodiment achieves precise positioning and rapid adjustment of the second side plate 22 in the left-right direction through a multi-position retaining mechanism. The retaining mechanism can provide discrete or continuous positioning retention during the translation of the second side plate 22, allowing the technician to precisely lock the compression plate in the optimal position according to the actual size of the breast. This releasable progressive fixation method not only meets the needs of patients with different body types but also enables fine-tuning of the position through rapid release. While ensuring stable fixation of the breast, it significantly improves the flexibility and repeatability of the positioning operation, providing a reliable mechanical guarantee for high-quality imaging.

[0085] Please see Figure 10As shown, in an optional embodiment of this utility model, the retaining mechanism includes a wave surface 2241 disposed on the base 10 along the second direction Y, and an elastic telescopic component disposed on the second side plate 22 or the second slide block 221 opposite to the wave surface 2241. Specifically, the elastic telescopic component may be, for example, a telescopic pin 2231 and a compression spring 2232. The elastic force of the compression spring 2232 causes the telescopic pin 2231 to abut against the wave surface 2241, thereby maintaining the position of the second side plate 22. The top end of the telescopic pin 2231 may be configured as a spherical surface, an arc surface, or an inclined surface. When the force on the second side plate 22 is sufficient to overcome the elastic force of the compression spring 2232, the retaining effect of the retaining mechanism can be released, allowing the second side plate 22 to translate along the second direction Y. This further embodiment achieves adaptive retention of the second side plate 22 through the cooperation of the wave surface 2241 and the elastic telescopic component; the continuous engagement of the elastic telescopic component on the wave surface 2241 forms a multi-point flexible braking, enabling the second side plate 22 to obtain a stable holding force at any position, while allowing the operator to achieve smooth position adjustment by moderate thrust; this adaptive mechanical retention structure avoids the limitations of traditional gear positioning, and provides the technician with an intuitive operating feel through elastic feedback, achieving a balance between compression force and ease of operation while ensuring the accuracy of lateral breast compression.

[0086] Please see Figure 13 As shown, in an optional embodiment of this utility model, the retaining mechanism includes a second rack 2221 and a second toothed block. The second rack 2221 is disposed along the second direction Y and is fixedly disposed relative to the base 10. The second toothed block is installed in a manner that allows it to move synchronously with the second side plate 22 along the second direction Y, and the second toothed block is assembled to be able to move relative to the second side plate 22 or the second slide block 221 in a direction not parallel to the second direction Y, so that the second toothed block can engage or disengage with the second rack 2221. The tooth profiles of the second rack 2221 and the second toothed block are configured such that when the second toothed block engages with the second rack 2221, it can prevent the second side plate 22 from moving away from the receiving portion 20, and when the second side plate 22 moves towards the receiving portion 20, it can automatically disengage the engaging second toothed block and the second rack 2221. The working principle of the retaining mechanism in this embodiment is similar to that of the first locking mechanism, and will not be described again here.

[0087] Please see Figure 8 , 13As shown, in an optional embodiment of this utility model, the upper end of the second side plate 22 is provided with an extension 225 inclined away from the receiving portion 20, and a coil unit is provided inside the extension 225. This further embodiment achieves coordinated support and signal acquisition for the axillary region through the inclined design of the extension 225 and the built-in coil unit; while providing comfortable support by conforming to the anatomical curve of the rib and armpit, the inclined extension 225 can effectively cover the armpit area with its built-in coil unit, solving the defect of insufficient axillary signal acquisition by traditional breast coils.

[0088] Please see Figure 8 As shown, in an optional embodiment of this invention, the extension 225 is made of an elastic material. This further embodiment achieves better ergonomic fit through the overall deformation characteristics of the elastic extension 225; the elastic material allows the extension 225 to undergo overall flexible deformation according to the patient's body shape, maintaining uniform support for the axillary region while avoiding localized stress concentration. Please refer to... Figure 13 As shown, in some other embodiments, the extension 225 may also be configured as a rigid structure and a flexible pad may be provided on the extension 225 to achieve reliable lateral support for the human body.

[0089] Please see Figure 9 , 13 As shown, in an optional embodiment of this utility model, an observation window 220 is provided on the second side plate 22. This further embodiment achieves real-time visual monitoring of the breast positioning process through the setting of the observation window 220; the operator can directly confirm the breast position and compression status through the observation window 220 without repeatedly opening and closing the second side plate 22, which avoids the impact of frequent adjustments on positioning accuracy and can promptly detect positioning deviations, significantly improving the accuracy and efficiency of operation in complex cases.

[0090] Please see Figure 2 , 3 As shown in Figures 11 and 15, in an optional embodiment of this utility model, the coil unit may include a first coil unit 1 disposed within the second side plate 22, a second coil unit 2 disposed on the side of the receiving portion 20 opposite to the second side plate 22, a third coil unit 3 disposed above and surrounding the receiving portion 20, and a fourth coil unit 4 disposed below and surrounding the receiving portion 20. It should be noted that the specific number of coil units is not unique. In practical applications, the number of coil units can be appropriately increased or decreased according to the requirements of detection accuracy and detection rate, and coil units in some areas can also be removed. For example, in... Figure 2 , 3In the illustrated embodiment, four first coil units 1 can be arranged in a 2×2 array within the main body of the second side plate 22, and two first coil units 1 can be linearly arranged within the extension 225; a fixed side plate 23 can be provided on the side of the receiving portion 20 opposite to the second side plate 22, and four second coil units 2 can be arranged in a 2×2 array within the fixed side plate 23; a third coil unit 3 can be pre-embedded in the housing below the support surface 11; and a fourth coil unit 4 can be pre-embedded in the base plate of the base 10. For example, in... Figure 11 , 15 In the illustrated embodiment, four first coil units 1 can be arranged in a 2×2 array within the main body of the second side plate 22, and three first coil units 1 can be linearly arranged within the extension 225; a fixed side plate 23 can be provided on the side of the receiving portion 20 opposite to the second side plate 22, and four second coil units 2 can be arranged in a 2×2 array within the fixed side plate 23; the third coil unit 3 can be pre-embedded in the housing below the support surface 11; a fourth coil unit 4 is not provided in this embodiment. Figure 3 Compared to the embodiments shown, Figure 15 The illustrated embodiment omits the coil unit at the bottom of the receiving section 20 and increases the number of coil units under the armpit, which can improve the signal-to-noise ratio of the axillary magnetic resonance signal. This further embodiment achieves omnidirectional high-precision signal acquisition of breast tissue through a multi-dimensional distributed coil array; the coil units arranged in four directions—the second side plate 22, the fixed side plate 23, the support surface 11, and the base 10—form a three-dimensional coverage network, which can not only ensure the uniformity of signal reception in various areas of the breast, but also enhance the signal-to-noise ratio for lesion sites. While ensuring rapid scanning, it provides richer imaging information for the early diagnosis and precise localization of breast diseases.

[0091] In summary, the magnetic resonance coil device provided by this invention can provide a high signal-to-noise ratio and image quality for the entire breast area and axilla. It can also support up to 4th order IPAT (Integrated Parallel Acquisition Technology) acceleration in multiple directions, thereby improving scanning speed and reducing scanning time. The coil can also support scanning and positioning of patients of different sizes, and can compress, position, and fix the breast from the head-to-toe direction and left-right direction to reduce motion artifacts during the scanning process. At the same time, the coil has a neat design, high integration, simple workflow, and is easy to operate.

[0092] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0093] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Claims

1. A magnetic resonance coil device, characterized in that, include: The base has a support surface at the top for supporting the human torso, and a cavity below the support surface. The cavity communicates with the space above the support surface through an opening on the support surface. An enclosure assembly is disposed within the cavity. The enclosure assembly includes a plurality of side plates, and a receiving portion for accommodating a human breast tissue is formed between each side plate. The receiving portion is located below the opening. At least a portion of the side plates are movably disposed relative to the base, and the volume of the receiving portion changes with the movement of the side plates. A coil unit, a plurality of said coil units are disposed on the base and / or the enclosure assembly, and each said coil unit surrounds the receiving portion.

2. The magnetic resonance coil device according to claim 1, characterized in that, The enclosure component includes a first side plate movably disposed relative to the base along a first direction, the first side plate being disposed on at least one side of the receiving portion in the first direction, the first direction being the head-to-toe direction of a human body supported on the support surface.

3. The magnetic resonance coil device according to claim 2, characterized in that, A first locking mechanism is provided between the first side plate and the base, and the first locking mechanism is configured to switch between the following workstations: The locking position at least prevents the first side plate from moving away from the receiving part; and Unlock the workstation to allow the first side plate to move freely back and forth along the first direction.

4. The magnetic resonance coil device according to claim 3, characterized in that, The first locking mechanism includes a first rack and a first tooth block disposed opposite to each other, wherein the length direction of the first rack is parallel to the first direction; The first rack is fixedly disposed relative to the base, the first tooth block is installed in a manner that enables it to move synchronously with the first side plate along the first direction, and the first tooth block is assembled to be able to move relative to the first side plate in a direction that is not parallel to the first direction, so that the first tooth block can engage or disengage with the first rack.

5. The magnetic resonance coil device according to claim 4, characterized in that, The first toothed block is rotatably configured relative to the first side plate; It also includes an elastic element, which is assembled to drive the first tooth block to mesh with the first rack with its elastic force. The first tooth block is provided with a trigger part, which is configured to drive the first tooth block to separate from the first rack when it is subjected to an external force.

6. The magnetic resonance coil device according to claim 4, characterized in that, The tooth profiles of the first rack and the first tooth block are configured such that when the first tooth block meshes with the first rack, it can prevent the first side plate from moving away from the receiving portion, and when the first side plate moves towards the receiving portion, it can automatically separate the meshing first tooth block and the first rack.

7. The magnetic resonance coil device according to claim 2, characterized in that, A first sliding assembly for limiting the movement path of the first side plate is provided between the first side plate and the base. The first sliding assembly includes a first slide rail and a first slide block that are slidably engaged. The first slide rail is arranged along the first direction. The first side plate is provided in at least two, and the at least two first side plates are respectively arranged on both sides of the receiving part along the first direction. The first slide rail is fixedly arranged relative to the base, and the first slide block is fixedly arranged relative to the first side plate. The two first slide blocks corresponding to the two first side plates share the same first slide rail.

8. The magnetic resonance coil device according to claim 2, characterized in that, The first side plate includes a base movably connected to the base and a replaceable portion detachably connected to the base, the replaceable portion defining at least a portion of the first side plate facing the receiving portion; at least one side of the replaceable portion facing the receiving portion is made of a flexible material.

9. The magnetic resonance coil device according to claim 1, characterized in that, The enclosure component includes a second side plate disposed on the operating side of the receiving portion. The operating side is the side of the receiving portion away from the center of the supported human torso in a second direction, which is the left-right direction of the supported human torso. The second side plate is movably connected to the base so that the operating side of the receiving portion can be closed or exposed.

10. The magnetic resonance coil device according to claim 9, characterized in that, The base is provided with a second slide rail, which is parallel to the second direction. The second side plate is provided with a second slide block, which is slidably connected to the second slide rail. The second side plate is rotatably connected to the second slide block.

11. The magnetic resonance coil device according to claim 10, characterized in that, A second locking mechanism for limiting the rotation angle of the second side plate is provided between the second side plate and the base or between the second side plate and the slide. The second locking mechanism is configured to hold the second side plate at at least a first preset angle and to release the second side plate from at least the first preset angle, where the first preset angle is the angle at which the second side plate closes the operating side.

12. The magnetic resonance coil device according to claim 11, characterized in that, The second locking mechanism includes a third slide rail parallel to the second slide rail disposed on the base, and a third slide block disposed on the second side plate; in response to the second side plate at the first preset angle, the third slide block slides in conjunction with the third slide rail; the third slide block and the third slide rail are configured such that when the second side plate is translated along the second direction to a preset position, the third slide block disengages from the third slide rail.

13. The magnetic resonance coil device according to claim 11, characterized in that, The second locking mechanism includes a locking groove provided on one of the second side plate and the second slide, and a locking pin provided on the other of the second side plate and the second slide, the locking pin being movably disposed relative to the second side plate or the second slide; in response to the second side plate at the first preset angle, the locking pin is configured to engage or disengage with the locking groove.

14. The magnetic resonance coil device according to claim 10, characterized in that, A retaining mechanism is provided between the second side plate and the base or between the second slide and the base. The retaining mechanism is configured to hold the second side plate in multiple positions in the second direction and to release the second side plate from the multiple positions.

15. The magnetic resonance coil device according to claim 14, characterized in that, The retaining mechanism includes a wave-like surface on the base arranged along the second direction, and an elastic telescopic component on the second side plate or the second slide that is arranged opposite to the wave-like surface.

16. The magnetic resonance coil device according to claim 9, characterized in that, The upper end of the second side plate is provided with an extension that is inclined away from the receiving part; the extension is made of an elastic material, or the side of the extension facing the supported human body is made of a flexible material.

17. The magnetic resonance coil device according to claim 9, characterized in that, An observation window is provided on the second side panel.

18. The magnetic resonance coil device according to claim 9, characterized in that, The coil unit includes a first coil unit disposed within the second side plate; and / or a second coil unit disposed on the side of the receiving portion opposite to the second side plate; and / or a third coil unit located above and surrounding the receiving portion; and / or a fourth coil unit located below and surrounding the receiving portion.

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