Integrated bilateral ankle joint magnetic resonance coil integrating ankle fixing function

Abstract

The invention belongs to the technical field of magnetic resonance coils, and particularly relates to an integrated bilateral ankle joint magnetic resonance coil integrating an ankle fixing function, the integrated bilateral ankle joint magnetic resonance coil comprises a magnetic resonance coil and a coil plate, and the magnetic resonance coil is fixedly connected in the coil plate; a pedal plate is connected to the coil plate in a sliding manner; two sides of the coil plate are respectively connected with a width adjusting plate in a sliding manner; two fixing frames are fixedly connected to the pedal plate; the fixing frame is rotationally connected with a double-thread rod, and two threads on the double-thread rod are arranged to be opposite. According to the size of the foot of a currently detected patient, a doctor adaptively rotates a double-threaded rod, the double-threaded rod rotates to synchronously drive two width adjusting plates to be close to or far away from each other through two length adjusting assemblies, after adjustment is completed, the positions of the two width adjusting plates are fixed to a coil plate, the two width adjusting plates clamp and fix the foot of the patient, and the width adjusting plates are fixed to the coil plate. The width of feet of different patients is adapted; the position of the pedal plate is also adjusted through the length adjusting assembly, and the device adapts to the thicknesses of feet of different patients.

Description

Technical Field

[0001] This invention belongs to the field of magnetic resonance coil technology, specifically an integrated bilateral ankle joint magnetic resonance coil that integrates foot and ankle fixation functions. Background Technology

[0002] Magnetic resonance imaging (MRI) is a medical imaging technique that uses strong magnetic fields and radio frequency pulses to induce resonance in hydrogen nuclei within human tissues and receives the signals they release. These signals are then processed by a computer to form anatomical images. The magnetic resonance coil is a key component of this system. It serves as both an antenna that transmits radio frequency pulses to excite the nuclei and a detector that receives the weak signals generated during the relaxation process of the nuclei. Its performance directly determines the signal-to-noise ratio, resolution, and scanning speed of the image. Depending on the examination site and purpose, the coil is designed in various shapes and with different numbers of channels to accurately cover the target area and efficiently acquire signals.

[0003] Bilateral ankle MRI coils are specialized surface coils, typically designed to accommodate both rigid and flexible structures of the ankles simultaneously. Their shape often resembles a box or support structure with two parallel holes, into which the patient inserts both feet side by side for fixation. These coils employ a multi-channel array design, enabling highly sensitive signal reception around both ankle joints, thereby achieving simultaneous high-resolution imaging of both joints. This improves examination efficiency and facilitates direct comparison of the anatomical structures and lesions of both joints in a single scan.

[0004] When using a traditional integrated bilateral ankle MRI coil, the patient lies supine on the MRI examination table. The physician assists in placing both feet smoothly into the two designated foot slots of the coil, ensuring that both ankles are roughly located in the central sensitive area of ​​the coil. Usually, a restraint strap is used to gently restrain the feet and distal lower legs to reduce motion artifacts during the scan. Subsequently, the electrical interface of the coil is correctly connected to the receiving channel of the scanning table. In the control room, the physician selects the corresponding bilateral ankle coil profile in the scan sequence. The system then activates the relevant receiving channel and performs necessary pre-scan calibration. Throughout the scan, the coil must remain in a stable position to ensure clear and symmetrical bilateral ankle images are obtained.

[0005] When performing bilateral ankle MRI examinations, the aforementioned traditional single-size integrated bilateral ankle coil is widely used. This coil design is suitable for detecting both feet of normal size. It can image both ankles simultaneously in a single scan, thereby reducing the patient's examination time and improving efficiency. However, the size of each person's feet is not uniform, especially for patients with larger or smaller feet. When using a traditional single-size coil, it is difficult to adjust the corresponding position for fixed detection according to the different sizes of the patient's feet, which can easily affect the image quality.

[0006] Therefore, the present invention provides an integrated bilateral ankle joint magnetic resonance coil that integrates foot and ankle fixation function. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: An integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function, comprising a magnetic resonance coil and a coil plate, wherein the magnetic resonance coil is fixedly connected within the coil plate; a foot pedal is slidably connected to the coil plate; a width adjustment plate is slidably connected to both sides of the coil plate; two fixing brackets are fixedly connected to the foot pedal; a double-threaded rod is rotatably connected to the fixing bracket, and the two threads on the double-threaded rod are set in opposite directions; a turntable is fixedly connected to the double-threaded rod near its center; an adjustment length component is provided on the side of the width adjustment plate near the double-threaded rod, the adjustment length component being used to connect the width adjustment plate to the double-threaded rod and to adjust the position of the foot pedal.

[0009] Preferably, the length adjustment assembly includes an length adjustment plate, length adjustment holes, and a No. 1 bolt; the length adjustment plate is slidably connected to one end of the width adjustment plate near the foot pedal, and the two ends of the double threaded rod are respectively threaded to the two length adjustment plates; multiple length adjustment holes are formed on the length adjustment plate; the No. 1 bolt is threaded to the width adjustment plate and the length adjustment plate.

[0010] Preferably, an arc-shaped plate is fixedly connected to the side of the width adjustment plate near the foot pedal, and the arc-shaped plate is slidably connected to the coil plate; the bottom of the arc-shaped plate is slidably connected to a telescopic plate through a first elastic element.

[0011] Preferably, a fixing rod is fixedly connected to the side of the width adjustment plate away from the foot pedal; the fixing rod is slidably connected to the sliding plate; a second elastic element is sleeved on the fixing rod, and the second elastic element is fixed between the sliding plate and the width adjustment plate; an anti-loosening bolt is threaded to the end of the fixing rod away from the width adjustment plate.

[0012] Preferably, two hanging rods are fixedly connected to the end of the width adjustment plate away from the foot pedal; flexible coil strips are provided on the two hanging rods, and Velcro is fixedly connected to the hanging rods.

[0013] Preferably, a fixing plate is provided at the bottom of the coil plate; two sliding seats are slidably connected to the fixing plate; multiple adjustment holes are provided on the fixing plate; No. 2 bolts are threadedly connected to the fixing plate and the sliding seats; an angle adjustment mechanism is provided between the sliding seats and the coil plate, and the angle adjustment mechanism is used to adjust the angle of the coil plate on the sliding seats.

[0014] Preferably, the angle adjustment mechanism includes a support base, a rotating rod, a roller frame, and a positioning component; the support base is fixedly connected to the sliding base; the rotating rod is rotatably connected to the support base; the roller frame is fixedly connected to the rotating rod; and the positioning component is disposed on the roller frame and is used to position the rotated roller frame.

[0015] Preferably, the positioning component includes angle holes and No. 3 bolts; a plurality of angle holes are formed on the roller frame, and one end of the angle hole is set in a trumpet shape; the No. 3 bolts are threadedly connected to the support base and pass through the roller frame.

[0016] Preferably, an extension support is fixedly connected to the rotating rod; an extension plate is fixedly connected to the extension support, and an arc-shaped groove is formed on the extension plate.

[0017] Preferably, a first memory foam is fixedly connected to the two arc-shaped plates, and the first memory foam is located on the arc surface of the arc-shaped plate; a second memory foam is fixedly connected to the extension plate, and the second memory foam is located on the arc groove.

[0018] The beneficial effects of this invention are as follows: 1. The present invention discloses an integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function. Based on the size of the patient's foot being tested, the physician adaptively rotates a double-threaded rod. This rotation of the double-threaded rod synchronously drives two width-adjusting plates closer together or further apart via two sets of length-adjusting components. After adjustment, the positions of the two width-adjusting plates are fixed on the coil plate, clamping and fixing the patient's foot to accommodate different foot widths. Similarly, the length-adjusting components adjust the position of the foot pedal to accommodate different foot thicknesses. When testing patients with similar foot sizes, the patient's feet are placed on the two sets of coil plates, respectively, and fixed between the two width-adjusting plates for testing. This integrated bilateral ankle joint magnetic resonance coil... Its unique structural design enables effective fixation of the foot and ankle, as well as flexible adjustment of the magnetic resonance coil, improving the accuracy and comfort of bilateral ankle MRI examinations and providing a more reliable basis for clinical diagnosis and treatment. Furthermore, for patients whose feet are of different sizes due to illness or other reasons, the distance between the two width adjustment plates and the position of the foot pedal can be adaptively adjusted according to the different sizes of each foot, ensuring stable positioning and magnetic resonance signal acquisition for each foot. This enhances the applicability and personalization of the examination. This refined adjustment mechanism not only reduces patient discomfort during the examination but also avoids image artifacts that may result from improper fixation, further ensuring image quality.

[0019] 2. The integrated bilateral ankle joint magnetic resonance coil with foot and ankle fixation function described in this invention allows for adjustment of the angle of each magnetic resonance coil according to different patient body types and testing comfort, such as for patients with inward or outward toes. The support base serves as the support for the rotating roller frame. After the physician releases the limiting position of the positioning component, the rotating roller frame is rotated on the rotating rod, simultaneously driving the coil plate and multiple components to rotate. After adjusting the angle according to the patient's specific posture, the rotating roller frame is fixed using the positioning component. This angle adjustment mechanism ensures both the flexibility of angle adjustment and stable locking through the positioning component. Through this angle adjustment design, the device can adapt to different patients' foot postures, ensuring that the magnetic resonance coil always maintains a stable detection state with the foot, thereby improving the accuracy of signal acquisition and imaging quality. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the arc-shaped plate in this invention; Figure 3 This is a schematic diagram of the double-threaded rod in this invention; Figure 4 This is a schematic diagram of the length adjustment plate in this invention; Figure 5 This is a schematic diagram of the extension plate in this invention.

[0022] In the diagram: 1. Coil plate; 11. Foot pedal; 12. Width adjustment plate; 13. Fixing frame; 14. Double threaded rod; 15. Turntable; 2. Length adjustment plate; 21. Length adjustment hole; 22. Bolt No. 1; 3. Arc plate; 31. Telescopic plate; 4. Fixing rod; 41. Sliding plate; 42. Elastic element No. 2; 43. Anti-detachment bolt; 5. Hanging rod; 51. Flexible coil strip; 6. Fixing plate; 61. Sliding seat; 62. Adjustment hole; 63. Bolt No. 2; 7. Support seat; 71. Rotating rod; 72. Roller frame; 8. Angle hole; 81. Bolt No. 3; 9. Extension support; 91. Extension plate; 92. Memory foam No. 1; 93. Memory foam No. 2. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 5As shown in the embodiment of the present invention, an integrated bilateral ankle joint magnetic resonance coil with foot and ankle fixation function includes a magnetic resonance coil and a coil plate 1, with the magnetic resonance coil fixedly connected inside the coil plate 1; a foot pedal 11 is slidably connected to the coil plate 1; a width adjustment plate 12 is slidably connected to both sides of the coil plate 1; two fixing brackets 13 are fixedly connected to the foot pedal 11; a double-threaded rod 14 is rotatably connected to the fixing bracket 13, and the two threads on the double-threaded rod 14 are set in opposite directions; a turntable 15 is fixedly connected to the double-threaded rod 14 near its center; an adjustment component is provided on the side of the width adjustment plate 12 near the double-threaded rod 14, the adjustment component being used to connect the width adjustment plate 12 to the double-threaded rod 14 and to adjust the position of the foot pedal 11; during bilateral ankle joint magnetic resonance imaging examination, the two coil plates 1 are fixed to one On the MRI examination table, an integrated structure is used. Each coil plate 1 contains an MRI coil, and two width adjustment plates 12 on the coil plate 1 also contain MRI coils. Depending on the size of the patient's foot being examined, the physician adaptively rotates the turntable 15 on the double threaded rod 14. The turntable 15 drives the double threaded rod 14 to rotate on two fixed frames 13. The two threads on both sides of the double threaded rod 14 are set in opposite directions. The rotation of the double threaded rod 14 can synchronously drive the two width adjustment plates 12 to move closer or further apart through two sets of length adjustment components. If the patient's foot is large, the two width adjustment plates 12 are adjusted to move further apart; if the patient's foot is small, the two width adjustment plates 12 are adjusted to move closer together. After adjustment, the positions of the two width adjustment plates 12 are fixed on the coil plate 1, and the two width adjustment plates 12 clamp and fix the patient's foot to adapt to the width of different patients' feet. The position of the foot pedal 11 can also be adjusted by the length adjustment component to adapt to the thickness of different patients' feet. When testing patients with similar foot sizes, the patient's feet are placed on two sets of coil plates 1 and fixed between two width adjustment plates 12 for testing. This integrated bilateral ankle joint magnetic resonance coil, through its unique structural design, achieves effective fixation of the foot and ankle and flexible adjustment of the magnetic resonance coil, improving the accuracy and comfort of bilateral ankle joint magnetic resonance imaging examination, and providing a more reliable basis for clinical diagnosis and treatment. Meanwhile, some patients have feet of different sizes due to illness or other reasons. In this case, the distance between the two width adjustment plates 12 and the position of the foot pedal 11 can be adjusted according to the different sizes of each foot, so as to ensure that each foot can be stably limited and magnetic resonance signal acquired, thereby improving the applicability and personalization of the examination. This fine adjustment mechanism not only reduces the patient's discomfort during the examination, but also avoids image artifacts that may be caused by improper fixation, further ensuring the imaging quality.

[0025] The length adjustment assembly includes an adjustment plate 2, adjustment holes 21, and a No. 1 bolt 22. The adjustment plate 2 is slidably connected to the end of the width adjustment plate 12 near the foot pedal 11, and the two ends of the double-threaded rod 14 are threadedly connected to the two adjustment plates 2 respectively. Multiple adjustment holes 21 are formed on the adjustment plate 2. The No. 1 bolt 22 is threadedly connected to the width adjustment plate 12 and the length adjustment plate 2. When adjusting the distance between the two width adjustment plates 12, the physician holds the turntable 15 and rotates the double-threaded rod 14. The threads at both ends of the double-threaded rod 14 engage with the two adjustment plates 2 respectively, allowing the two width adjustment plates 12 to slide closer or further apart, thus adjusting the distance between the two width adjustment plates 12. When it is necessary to adjust the position of the foot pedal 11... The physician first rotates bolt 22 to separate it from the length adjustment hole 21, releasing the length adjustment plate 2 from its fixed position on the width adjustment plate 12. Then, the physician pushes or pulls the foot pedal 11, causing it to slide on the coil plate 1 and slide the length adjustment plate 2 on the width adjustment plate 12. Once the foot pedal 11 is in the appropriate position, bolt 22 is rotated in the opposite direction to connect it to the corresponding length adjustment hole 21, fixing the length adjustment plate 2 onto the width adjustment plate 12. This completes the adjustment of the foot pedal 11's position. This length adjustment component design is simple in structure and easy to operate, enabling quick and accurate adjustment of the width adjustment plate 12's spacing and the foot pedal 11's position to meet the testing needs of different patients' feet.

[0026] like Figures 1 to 3 , Figure 5 As shown, an arc-shaped plate 3 is fixedly connected to the side of the adjustable plate 12 near the foot pedal 11, and the arc-shaped plate 3 is slidably connected to the coil plate 1; the bottom of the arc-shaped plate 3 is slidably connected to a telescopic plate 31 through an elastic element; when placed for different patients' feet, multiple arc-shaped plates 3 and telescopic plates 31 contain built-in magnetic resonance coils, or the original magnetic resonance coils in the coil plate 1 are configured in multiple arc-shaped plates 3 and telescopic plates 31. One adjustable plate 12, arc-shaped plate 3, and telescopic plate 31 are integrated into a group. When adjusting the distance between two groups of adjustable plates 12, the two groups of adjustable plates 12 move closer to each other, and the two telescopic plates 31 move closer together as the two adjustable plates 12 slide. The first elastic element is compressed and compressed into the interior of the two arc-shaped plates 3. When the two sets of width-adjusting plates 12 move away from each other, the first elastic element pushes the telescopic plate 31 outward to reset through its own elastic restoring force, ensuring that the magnetic resonance coil is always in contact with the foot and improving the stability of signal acquisition. The patient's two feet are placed on the two arc-shaped plates 3 and the telescopic plate 31 respectively. The inclined surfaces of the two arc-shaped plates 3 conform to the shape of the patient's feet. This elastic buffer structure works in synergy with the sliding adjustment function of the width-adjusting plate 12 to adapt to different foot widths and compensate for differences in foot shape through dynamic deformation, further enhancing the compatibility of the device with complex foot morphology.

[0027] like Figures 1 to 3As shown, a fixing rod 4 is fixedly connected to the side of the adjustable plate 12 away from the foot pedal 11; the fixing rod 4 is slidably connected to the sliding plate 41; a second elastic element 42 is sleeved on the fixing rod 4, and the second elastic element 42 is fixed between the sliding plate 41 and the adjustable plate 12; an anti-dislodgement bolt 43 is threadedly connected to the end of the fixing rod 4 away from the adjustable plate 12; when the patient's bilateral ankle joints are fixed for testing, each sliding plate 41 has a built-in magnetic resonance coil. During the process of the two adjustable plates 12 sliding closer to each other, the two sliding plates 41 press against each other and slide on the two fixed plates respectively. On rod 4, two elastic elements 42 are stretched and stressed, so that the two sliding plates 41 always cover the top of the ankle joint. The anti-dislodgement bolts 43 are threaded onto the fixing rod 4 to limit the sliding plates 41 from dislodgement. This dynamic fitting mechanism ensures the continuous and stable detection of the magnetic resonance coil and the ankle joint, and maintains the integrity of signal acquisition even under different foot widths. When the two width adjustment plates 12 move away from each other, the elastic elements 42 pull the sliding plates 41 back to the initial position through their own elastic restoring force, so that the device can quickly adapt to the detection needs of the next patient.

[0028] like Figure 1 and Figure 2 As shown, two hanging rods 5 are fixed to the end of the adjustable plate 12 away from the foot pedal 11; flexible coil strips 51 are provided on the two hanging rods 5, and Velcro is fixed to the hanging rods 5; when examining patients with slender ankles, the coverage of the two adjustable plates 12 is insufficient. The two flexible coil strips 51 suspended on the two adjustable plates 12 are used as extensions. The two flexible coil strips 51 are not usually used, but only for special patients. Each flexible coil strip 51 is wrapped around the two hanging rods 5 with Velcro. After the two flexible coil strips 51 are removed, they are wrapped around the patient's ankle joint that extends beyond the two adjustable plates 12. The Velcro fixation expands the coverage of the magnetic resonance coil, ensuring comprehensive examination of slender ankle joints. This adjustable extension design not only improves the applicability of the equipment, but also avoids blind spots caused by insufficient coverage, providing more detailed imaging information for clinical diagnosis. At the same time, the use of Velcro makes the operation simpler and faster, and doctors can quickly and adaptively adjust according to the specific situation of the patient, improving the examination efficiency.

[0029] like Figures 1 to 5As shown, a fixing plate 6 is provided at the bottom of the coil plate 1; two sliding seats 61 are slidably connected to the fixing plate 6; multiple adjustment holes 62 are provided on the fixing plate 6; No. 2 bolts 63 are threadedly connected to the fixing plate 6 and the sliding seats 61; an angle adjustment mechanism is provided between the sliding seats 61 and the coil plate 1, which is used to adjust the angle of the coil plate 1 on the sliding seats 61; when integrating two sets of magnetic resonance coils for bilateral ankle joints, the fixing plate 6 serves as the base for the two sets of magnetic resonance coils and is fixed on the magnetic resonance examination table. The angle adjustment mechanism serves as the connection between the coil plate 1 and the sliding seats 61. The two sliding seats 61 slide on the fixing plate 6 respectively, which can adjust the position of each set of magnetic resonance coils. Then, two No. 2 bolts 63 are threadedly fixed in the two adjustment holes 62 to integrate one set of coils. The magnetic resonance coil is fixed in position. The distance between the two sliding seats 61 is adaptively adjusted according to each patient's specific physical condition to achieve a more comfortable examination position. Simultaneously, the angle adjustment mechanism can flexibly adjust the tilt of the coil plate 1 on the sliding seat 61 based on the relative angle between the patient's feet and the examination bed, ensuring optimal contact between the magnetic resonance coil and the feet. This collaborative design of the base and angle adjustment mechanism not only enables horizontal position adjustment of the device but also supports vertical posture optimization, further enhancing patient comfort during the examination. The sliding adjustment of the sliding seats 61 and the multi-point fixation of the second bolt 63 ensure the stability of the device on patients of different body types, avoiding imaging deviations caused by patient movement and providing more reliable imaging support for clinical diagnosis.

[0030] The angle adjustment mechanism includes a support base 7, a rotating rod 71, a roller frame 72, and a positioning component. The support base 7 is fixedly connected to the sliding seat 61. The rotating rod 71 is rotatably connected to the support base 7. The roller frame 72 is fixedly connected to the rotating rod 71. The positioning component is disposed on the roller frame 72 and is used to position the rotated roller frame 72. When adjusting the angle of each set of magnetic resonance coils according to different body types and testing comfort, such as for patients with in-toeing and out-toeing feet, the support base 7 serves as the support for the roller frame 72. After the physician releases the limiting position of the positioning component, the roller frame 72 is rotated on the rotating rod 71, which simultaneously drives the coil plate 1 and multiple components to rotate. After adjusting the angle according to the patient's specific posture, the positioning component is used to fix the roller frame 72. This angle adjustment mechanism ensures the flexibility of angle adjustment and achieves stable locking through the positioning component. Through this angle adjustment design, the device can adapt to different patients' foot postures, ensuring that the magnetic resonance coil always maintains a stable detection state with the foot, thereby improving the accuracy of signal acquisition and imaging quality.

[0031] The positioning component includes angle holes 8 and No. 3 bolts 81; multiple angle holes 8 are formed on the roller frame 72, and one end of the angle hole 8 is flared; the No. 3 bolts 81 are threaded onto the support base 7 and pass through the roller frame 72; when rotating the roller frame 72 to adjust the angle of the coil plate 1, the roller frame 72 is rotated first until it is rotated to the angle suitable for the patient's foot, and then the No. 3 bolts 81 are inserted into the support base 7, guided by the flared end of the angle holes 8, and pass through the corresponding angle holes 8. This design allows the No. 3 bolt 81 to be threaded onto the support base 7. By utilizing the threaded connection between the No. 3 bolt 81 and the support base 7, as well as the through-hole limiting effect of the No. 3 bolt 81 on the rotating roller frame 72, precise positioning of the rotating roller frame 72 after rotation is achieved. This flared guide design simplifies the positioning operation process, enabling quick angle fixing and effectively improving the equipment adjustment efficiency. At the same time, the threaded connection structure ensures positioning stability, preventing angle deviation caused by slight patient movement, ensuring the continuity of magnetic resonance signal acquisition, and enhancing the equipment's adaptability to different foot postures.

[0032] like Figure 1 and Figure 5 As shown, an extension support 9 is fixedly connected to the rotating rod 71; an extension plate 91 is fixedly connected to the extension support 9, and an arc-shaped groove is formed on the extension plate 91; when performing an ankle joint magnetic resonance imaging (MRI) test, the patient's foot is placed on the arc-shaped plate 3, and the extension support 9 and the extension plate 91 extend the arc-shaped plate 3, so that part of the lower leg can rest on the extension plate 91. The arc-shaped groove is designed to fit the curve of the lower leg, and by increasing the support area, it disperses the pressure on the foot and reduces the discomfort of the patient maintaining a fixed posture for a long time; this extension support structure works in conjunction with the foot fixation device to ensure the fit between the MRI coil and the ankle, and to improve the overall comfort of the test, which is especially suitable for patients with limited joint mobility and those who need to maintain a specific position for a long time.

[0033] like Figure 1 , Figure 2 and Figure 5As shown, a first memory foam 92 is fixed to both of the arc-shaped plates 3, and the first memory foam 92 is located on the arc surface of the arc-shaped plate 3; a second memory foam 93 is fixed to the extension plate 91, and the second memory foam 93 is located on the arc groove; when the patient's foot is placed on the arc-shaped plate 3 and the extension plate 91, the first memory foam 92 is fixed to the arc surface of the arc-shaped plate 3, and the second memory foam 93 is fixed to the arc groove of the extension support 9. The first memory foam 92 and the second memory foam 93 can, relying on the polyurethane material, adapt to the contour of the patient's foot and lower leg. Adapting to deformation, memory foam No. 1 (92) fills the gap between the arch of the foot and the device, while memory foam No. 2 (93) wraps around the protruding part of the back of the calf. Through the dual elastic support structure, the pressure is evenly distributed to a larger contact surface, effectively reducing local pressure. This dynamic fit design not only avoids skin pressure injuries that are easily caused by traditional rigid support components, but also reduces the displacement of the contact surface caused by the patient's slight movements during the examination due to the slow rebound characteristics of memory foam. After the test, the memory foam material can automatically return to its original shape, ensuring the accuracy of repeated use of the device for patients of different body types.

[0034] Working process: During bilateral ankle MRI examination, two coil plates 1 are fixed on an MRI examination table, integrated into a single structure. Each coil plate 1 contains an MRI coil, and the two width adjustment plates 12 on the coil plate 1 also contain MRI coils. Based on the size of the patient's foot being examined, the physician adaptively rotates the turntable 15 on the double-threaded rod 14. The turntable 15 drives the double-threaded rod 14 to rotate on two fixed frames 13. The two threads on both sides of the double-threaded rod 14 are set in opposite directions, so the rotation of the double-threaded rod 14 can synchronously drive the two width adjustment plates 12 to move closer together or... For patients with larger feet, the two width-adjusting plates 12 are adjusted to be further apart; for patients with smaller feet, they are adjusted to be closer together. After adjustment, the positions of the two width-adjusting plates 12 are fixed on the coil plate 1, clamping and fixing the patient's foot to accommodate different foot widths. Similarly, the position of the foot pedal 11 is adjusted using the length-adjusting component to accommodate different foot thicknesses. When testing patients with similar foot sizes, the patient's feet are placed on the two sets of coil plates 1 respectively, and fixed between the two width-adjusting plates 12 for testing. This integrated bilateral ankle joint magnetic resonance coil, through its unique structural design... This achieves effective fixation of the foot and ankle and flexible adjustment of the magnetic resonance coil, improving the accuracy and comfort of bilateral ankle joint magnetic resonance imaging examinations and providing a more reliable basis for clinical diagnosis and treatment. When adjusting the distance between the two width adjustment plates 12, the physician holds the turntable 15 and rotates the double threaded rod 14. The threads at both ends of the double threaded rod 14 engage with the two length adjustment plates 2, allowing the two width adjustment plates 12 to slide closer or further apart, thus adjusting the distance between them. When adjusting the position of the foot pedal 11, the physician first rotates the first bolt 22, so that the first bolt 22 engages with the length adjustment hole 2. 1. Separate and release the length adjustment plate 2 from the width adjustment plate 12. Then push or pull the foot pedal 11. The foot pedal 11 slides on the coil plate 1 and drives the length adjustment plate 2 to slide on the width adjustment plate 12. When the foot pedal 11 moves to the appropriate position, turn the first bolt 22 in the opposite direction to make the first bolt 22 threadedly connected to the corresponding length adjustment hole 21, and fix the length adjustment plate 2 on the width adjustment plate 12. This completes the adjustment of the position of the foot pedal 11. The design of this length adjustment component is simple in structure and easy to operate. It can quickly and accurately adjust the spacing of the width adjustment plate 12 and the position of the foot pedal 11 to meet the detection needs of different patients' feet. When placed on the feet of different patients, multiple arc-shaped plates 3 and telescopic plates 31 contain built-in magnetic resonance coils, or the original magnetic resonance coils in the coil plate 1 are configured within multiple arc-shaped plates 3 and telescopic plates 31. A width-adjusting plate 12, arc-shaped plates 3, and telescopic plates 31 are integrated into a set. When adjusting the distance between two sets of width-adjusting plates 12, the two sets of width-adjusting plates 12 move closer to each other. As the two width-adjusting plates 12 slide closer, they are squeezed and pushed into the interior of the two arc-shaped plates 3, and the first elastic element is compressed and compressed under force. When the two sets of width-adjusting plates 12 move closer to each other, they are squeezed and pushed into the interior of the two arc-shaped plates 3. When the two feet are separated, the first elastic element pushes the telescopic plate 31 to slide outward and reset through its own elastic restoring force, ensuring that the magnetic resonance coil is always in contact with the foot and improving the stability of signal acquisition. The patient's two feet are placed on the two arc-shaped plates 3 and the telescopic plate 31 respectively. The inclined surfaces of the two arc-shaped plates 3 are in contact with the shape of the patient's feet. This elastic buffer structure works in synergy with the sliding adjustment function of the width adjustment plate 12 to adapt to different foot widths and compensate for differences in foot shape through dynamic deformation, further enhancing the compatibility of the device with complex foot shapes. When performing bilateral ankle joint fixation testing on a patient, each sliding plate 41 contains a built-in magnetic resonance coil. As the two width-adjusting plates 12 slide closer to each other, the two sliding plates 41 press against each other and slide onto the two fixed rods 4 respectively. The two second elastic elements 42 are stretched and stressed, ensuring that the two sliding plates 41 always cover the top of the ankle joint. The anti-dislodgement bolts 43 are threaded onto the fixed rods 4 to limit the sliding plates 41 from dislodgement. This dynamic fitting mechanism ensures continuous and stable detection of the magnetic resonance coil and the ankle joint, maintaining the integrity of signal acquisition even with different foot widths. When the two width-adjusting plates 12 move away from each other, the second elastic element 42 pulls the sliding plate 41 back to its initial position through its own elastic restoring force, allowing the device to quickly adapt to the testing needs of the next patient. When examining patients with slender ankles, the coverage of the two adjustable plates 12 is insufficient. Two flexible coil strips 51 suspended from the two adjustable plates 12 are used as an extension. These two flexible coil strips 51 are not normally used, but only for specific patients. Each flexible coil strip 51 is wrapped around the two hanging rods 5 with Velcro. After removing the two flexible coil strips 51, they are wrapped around the patient's ankle joint extending beyond the two adjustable plates 12. The Velcro provides adhesive fixation, expanding the coverage of the magnetic resonance coil and ensuring comprehensive examination of slender ankles. This adjustable extension design not only improves the applicability of the equipment but also avoids blind spots caused by insufficient coverage, providing more detailed imaging information for clinical diagnosis. Furthermore, the use of Velcro makes operation simpler and faster, allowing physicians to quickly adapt to the patient's specific situation, thus improving examination efficiency. When integrating two sets of magnetic resonance coils for both ankle joints, a fixed plate 6 serves as the base for the two sets of magnetic resonance coils, fixed to the magnetic resonance examination table. An angle adjustment mechanism connects the coil plate 1 and the sliding seats 61. The two sliding seats 61 slide on the fixed plate 6, allowing adjustment of the position of each set of magnetic resonance coils. Two No. 2 bolts 63 are then threaded into the two adjustment holes 62 to fix the position of one set of magnetic resonance coils. The distance between the two sliding seats 61 is adaptively adjusted according to each patient's specific physical condition to achieve a more comfortable examination position. Simultaneously, the angle adjustment mechanism can flexibly adjust the position of the coil plate 1 according to the relative angle between the patient's foot and the examination table. The tilt angle on the sliding seat 61 ensures optimal contact between the magnetic resonance coil and the foot. This coordinated design of the base and the angle adjustment mechanism not only enables horizontal position adjustment of the device but also supports vertical posture optimization, further enhancing patient comfort during the examination. The sliding adjustment of the sliding seat 61 and the multi-point fixation of the second bolt 63 ensure the stability of the device on patients of different body types, avoiding imaging deviations caused by patient movement and providing more reliable imaging support for clinical diagnosis. When adjusting the angle of each group of magnetic resonance coils according to different patient body types and examination comfort, such as for patients with inward or outward toes, the support seat 7 acts as a support for the roller frame 72. After the physician releases the limiting position of the positioning component, the rotating roller frame 72 is rotated onto the rotating rod 71, simultaneously driving the coil plate 1 and multiple components to rotate. After adjusting the angle according to the patient's specific posture, the positioning component is used to fix the rotating roller frame 72. This angle adjustment mechanism ensures both the flexibility of angle adjustment and stable locking through the positioning component. Through this angle adjustment design, the device can adapt to different patients' foot postures, ensuring that the magnetic resonance coil always maintains a stable detection state with the foot, thereby improving the accuracy of signal acquisition and imaging quality. When adjusting the angle of the coil plate 1 by rotating the rotating roller frame 72, the rotating roller frame 72 is rotated first until it adapts to the patient's foot angle, then... A No. 3 bolt 81 is inserted into the support base 7 and guided by the flared end of the angle hole 8. The No. 3 bolt 81 passes through the corresponding angle hole 8, so that the No. 3 bolt 81 is threadedly fixed on the support base 7. By using the threaded connection between the No. 3 bolt 81 and the support base 7 and the through-hole limit of the No. 3 bolt 81 on the rotating roller frame 72, the precise positioning of the rotating roller frame 72 after rotation is achieved. This flared guide design simplifies the positioning operation process, which can quickly complete the angle fixation and effectively improve the equipment adjustment efficiency. At the same time, the threaded connection structure ensures the positioning stability and avoids angle deviation caused by slight movement of the patient, ensuring the continuity of magnetic resonance signal acquisition and enhancing the adaptability of the equipment to different foot postures. During an ankle MRI scan, the patient's foot is placed on the curved plate 3, and the extension support 9 and extension plate 91 extend the curved plate 3, allowing part of the lower leg to rest on the extension plate 91. The curved groove design conforms to the curve of the lower leg, increasing the support area and dispersing foot pressure, reducing discomfort from maintaining a fixed posture for extended periods. This extended support structure works synergistically with the foot fixation device, ensuring proper fit between the MRI coil and the ankle, and improving overall comfort during the scan. It is particularly suitable for patients with limited joint mobility or those who need to maintain a specific position for extended periods. When the patient's foot is placed on the curved plate 3 and extension plate 91, memory foam 92 is used to fix it to the curved surface of the curved plate 3, and... Memory foam 93 is fixed in the arc-shaped groove of the extension support 9. Memory foam 92 and 93, made of polyurethane, can adaptively deform according to the contours of the patient's foot and calf. Memory foam 92 fills the gap between the arch of the foot and the device, while memory foam 93 wraps around the protruding part of the back of the calf. The dual elastic support structure evenly distributes pressure to a larger contact surface, effectively reducing local pressure. This dynamic fit design not only avoids skin pressure injuries caused by traditional rigid supports, but also reduces contact surface displacement caused by the patient's slight movements during the examination due to the slow rebound characteristics of memory foam. After the test, the memory foam material can automatically return to its original shape, ensuring the accuracy of repeated use of the device for patients of different body types.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function, characterized in that: The device includes a magnetic resonance coil and a coil plate, with the magnetic resonance coil fixedly attached inside the coil plate. A foot pedal is slidably connected to the coil plate. Adjustment plates are slidably connected to both sides of the coil plate. Two fixing brackets are fixedly attached to the foot pedal. A double-threaded rod is rotatably connected to each fixing bracket, with the two threads on the double-threaded rod being set in opposite directions. A turntable is fixedly attached to the double-threaded rod near its center. An adjustment component is provided on the side of the adjustment plate near the double-threaded rod, and the adjustment component is used to connect the adjustment plate to the double-threaded rod and to adjust the position of the foot pedal.

2. The integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 1, characterized in that: The length adjustment assembly includes an length adjustment plate, length adjustment holes, and a No. 1 bolt; the length adjustment plate is slidably connected to one end of the width adjustment plate near the foot pedal, and the two ends of the double threaded rod are respectively threaded to the two length adjustment plates; multiple length adjustment holes are formed on the length adjustment plate; the No. 1 bolt is threaded to the width adjustment plate and the length adjustment plate.

3. The integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 1, characterized in that: An arc-shaped plate is fixed to the side of the width adjustment plate near the foot pedal, and the arc-shaped plate is slidably connected to the coil plate; a telescopic plate is slidably connected to the bottom of the arc-shaped plate through a first elastic element.

4. The integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 1, characterized in that: A fixing rod is fixedly connected to the side of the width adjustment plate away from the foot pedal; the fixing rod is slidably connected to the sliding plate; a second elastic element is sleeved on the fixing rod, and the second elastic element is fixed between the sliding plate and the width adjustment plate; an anti-loosening bolt is threaded to the end of the fixing rod away from the width adjustment plate.

5. The integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 1, characterized in that: Two hanging rods are fixed to the end of the width adjustment plate away from the foot pedal; flexible coil strips are provided on the two hanging rods, and Velcro is fixed to the hanging rods.

6. The integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 3, characterized in that: A fixing plate is provided at the bottom of the coil plate; two sliding seats are slidably connected to the fixing plate; multiple adjustment holes are provided on the fixing plate; No. 2 bolts are threadedly connected to the fixing plate and the sliding seats; an angle adjustment mechanism is provided between the sliding seats and the coil plate, which is used to adjust the angle of the coil plate on the sliding seats.

7. The integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 6, characterized in that: The angle adjustment mechanism includes a support base, a rotating rod, a roller frame, and a positioning component; the support base is fixedly connected to the sliding base; the rotating rod is rotatably connected to the support base; the roller frame is fixedly connected to the rotating rod; the positioning component is disposed on the roller frame and is used to position the rotated roller frame.

8. The integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 7, characterized in that: The positioning component includes angle holes and No. 3 bolts; multiple angle holes are formed on the roller frame, and one end of the angle hole is set in a trumpet shape; the No. 3 bolts are threaded onto the support base and pass through the roller frame.

9. An integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 7, characterized in that: An extension support is fixedly connected to the rotating rod; an extension plate is fixedly connected to the extension support, and an arc-shaped groove is formed on the extension plate.

10. An integrated bilateral ankle joint magnetic resonance coil with integrated foot and ankle fixation function according to claim 9, characterized in that: A first memory foam is fixedly attached to one of the two curved plates, and the first memory foam is located on the curved surface of the curved plate; a second memory foam is fixedly attached to the extension plate, and the second memory foam is located on the curved groove.

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