Magnetic resonance imaging equipment
By setting a drive bed plate and examination chamber spaced apart in the magnetic resonance imaging device and installing a sound insulation layer on the inner wall of the examination chamber, the problem of noise and vibration transmission to the patient is solved, and the examination comfort is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-04-03
AI Technical Summary
During the operation of magnetic resonance imaging equipment, the noise and vibration generated by the coil vibration in the examination chamber are transmitted to the patient through the bed, causing discomfort to the patient.
The bed plate is moved inside and outside the examination chamber by a drive assembly, so that it is spaced apart from the inner wall of the examination chamber to reduce the transmission of vibration and noise. A sound insulation layer is also set on the inner wall of the examination chamber to reduce airborne noise.
It effectively reduces the vibration and noise felt by patients, improves examination comfort, and prevents patients from feeling uncomfortable due to noise and vibration.
Smart Images
Figure CN224070449U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and more particularly to a magnetic resonance imaging device. Background Technology
[0002] Magnetic Resonance Imaging (MRI) is an imaging device that utilizes the principle of nuclear magnetic resonance and is widely used in the medical field. MRI equipment generally consists of a bed and an examination chamber. During the examination, the patient lies on the bed, and the bed and patient are pushed together into the examination chamber for the procedure.
[0003] During the operation of a magnetic resonance imaging (MRI) device, the coils in the examination chamber generate a strong Lorentz force when rapidly switching current, causing the coils to vibrate and produce significant noise. The strong noise and vibration can cause discomfort to the patient. Utility Model Content
[0004] This application provides a magnetic resonance imaging device that can prevent vibrations and noise generated in the examination chamber from being transmitted to the patient through fixed conduction, thereby reducing the vibrations and noise felt by the patient and preventing strong noises and vibrations from causing discomfort to the patient.
[0005] Specifically, a magnetic resonance imaging device includes:
[0006] The inspection chamber has an inspection cavity extending in a first direction;
[0007] The bed frame includes a bed frame and a bed board, the bed board being disposed on the bed frame and used for placing a patient; and,
[0008] A drive assembly is connected to the bed body for driving the bed board to move along the first direction so that the bed board enters and exits the examination chamber;
[0009] When the bed board is located inside the examination cavity, the bed board is spaced apart from the inner wall surface of the examination cavity.
[0010] In some embodiments of this application, the bed frame and the examination chamber are spaced apart.
[0011] In some embodiments of this application, the bed frame includes:
[0012] A support frame is provided, which passes through the examination cavity. The bed board is provided on the support frame. Support legs are connected to both ends of the support frame arranged along the first direction. The support legs are located outside the examination cavity.
[0013] In some embodiments of this application, the drive assembly is connected to the bed frame in a transmission manner, and the drive assembly is used to drive the bed frame to move along the first direction, so as to drive the bed board to move along the first direction.
[0014] In some embodiments of this application, the driving component includes:
[0015] A guide rail extends along the first direction, and the bed frame is slidably connected to the guide rail;
[0016] A driving component is connected to the bed frame for driving the bed frame to move along the guide rail, thereby causing the bed board to move in the first direction.
[0017] In some embodiments of this application, the guide rail is located above or below the bed frame.
[0018] In some embodiments of this application, the bed frame includes:
[0019] A support frame is provided, which passes through the examination cavity. The bed board is provided on the support frame. Support legs are connected to both ends of the support frame arranged along the first direction. The support legs are located outside the examination cavity.
[0020] The support frame is provided with guide rails at both ends along the first direction, and the support foot is located between the guide rail and the support frame, and the support foot is slidably connected to the guide rail.
[0021] In some embodiments of this application, the magnetic resonance imaging device further includes:
[0022] A lifting assembly is connected to the bed frame via a transmission mechanism. The lifting assembly is used to drive the bed frame to lift and lower, thereby driving the bed board to lift and lower.
[0023] In some embodiments of this application, the driving component includes:
[0024] A guide rail extends along the first direction, and the lifting assembly is slidably connected to the guide rail;
[0025] A driving component is connected to the lifting assembly for transmission. The driving component is used to drive the lifting assembly to move along the guide rail, so as to drive the bed frame and the bed board to move in the first direction.
[0026] In some embodiments of this application, a sound insulation layer is provided on the inner wall surface of the inspection cavity.
[0027] The beneficial effects of this application are as follows: When an examination is required for a patient, the bed board can be moved out of the examination chamber along the first direction by the drive assembly. After the patient lies on the bed board, the bed board and the patient can then be moved together into the examination chamber for examination by the drive assembly. At this time, the bed board and the inner wall of the examination chamber are spaced apart. Since the bed board does not contact the examination chamber, the vibration generated by the coil in the examination chamber when rapidly switching current is difficult to be transmitted to the bed board, thereby preventing the patient from feeling strong vibration. At the same time, it can prevent noise from being conducted to the patient along the bed board and other solids, thereby reducing the impact of solid-conducted noise on the patient. Most of the noise heard by the patient is conducted to the patient through the air, which can greatly reduce the noise heard by the patient, thereby preventing strong noise and vibration from causing discomfort to the patient. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of the magnetic resonance imaging device with the bed plate located outside the examination cavity in one embodiment of this application;
[0030] Figure 2 This is a schematic diagram of the magnetic resonance imaging device with the bed plate located inside the examination cavity in one embodiment of this application;
[0031] Figure 3 This is a partial structural schematic diagram of the magnetic resonance imaging device when the bed plate is located inside the examination cavity in one embodiment of this application;
[0032] Figure 4 This is a partial structural schematic diagram of the magnetic resonance imaging device when the bed plate is located inside the examination cavity in one embodiment of this application;
[0033] Figure 5 This is a schematic diagram of the magnetic resonance imaging device when the bed plate is located inside the examination cavity, according to another embodiment of this application.
[0034] Figure label:
[0035] 10. Inspection compartment; 11. Inspection chamber; 111. Inner wall surface; 20. Bed body; 21. Bed frame; 211. Support frame; 212. Support legs; 213. Weight reduction opening; 22. Bed board; 30. Drive assembly; 31. Guide rail; 40. Lifting assembly. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0037] Magnetic Resonance Imaging (MRI) equipment is an imaging examination device that utilizes the principle of nuclear magnetic resonance and is widely used in the medical field. MRI equipment generally consists of a bed and a magnet assembly. The magnet assembly has an examination chamber. During the examination, the patient lies on the bed, and the bed and the patient are pushed into the examination chamber together for the examination.
[0038] During the operation of a magnetic resonance imaging (MRI) device, the coils in the examination chamber generate a strong Lorentz force when the current is switched rapidly, causing the coils to vibrate and produce a lot of noise, usually equivalent to the sound of an electric drill or a lawnmower. The vibration and noise are transmitted to the bed through the contact part between the bed and the examination chamber, and then to the patient, so that the patient can feel strong noise and vibration, which can cause discomfort to the patient.
[0039] In view of the above-mentioned technical problems, this application provides a magnetic resonance imaging device to solve the problem that strong noise and vibration during the operation of the magnetic resonance imaging device can cause discomfort to patients.
[0040] Specifically, such as Figure 1 and Figure 2 As shown, the magnetic resonance imaging device includes an examination chamber 10, a bed 20, and a drive assembly 30.
[0041] The examination chamber 10 has an examination cavity 11 extending along the first direction XX. The examination chamber 10 is equipped with magnetic components such as magnetic gradient coils for MRI. The examination cavity 11 is used to provide space for the patient to undergo examination. When the examination chamber 10 is cylindrical in shape, the first direction XX is parallel to the axis of the examination chamber 10.
[0042] The bed body 20 includes a bed frame 21 and a bed board 22. The bed board 22 is set on the bed frame 21 and is used to place the patient. The bed board 22 can be rectangular in shape. When providing examination for the patient, the patient lies on the bed board 22. Then the bed board 22 and the patient can be moved together to the examination chamber 11 for examination. The bed frame 21 is used to provide support for the bed board 22 and the patient.
[0043] The drive assembly 30 is driven to the bed frame 20. The drive assembly 30 drives the bed board 22 to move along the first direction XX, so that the bed board 22 enters and exits the inspection chamber 11. It is understood that in some embodiments, the drive assembly 30 can be directly driven to the bed board 22, with the bed frame 21 and the inspection chamber 10 relatively stationary. The drive assembly 30 can drive the bed board 22 to move relative to the bed frame 21 and the inspection chamber 10 along the first direction XX. In this case, the drive assembly 30 can be installed on the bed frame 21 or on the ground. In other embodiments, the drive assembly 30 can also be directly driven to the bed frame 21, driving the bed frame 21 to move relative to the inspection chamber 10 along the first direction XX, thereby moving the bed board 22. In this case, the drive assembly 30 can be installed on the ground.
[0044] Among them, such as Figure 3 and Figure 4 As shown, when the bed board 22 is located inside the examination chamber 11, the bed board 22 is spaced apart from the inner wall surface 111 of the examination chamber 11, that is, the bed board 22 does not contact the inner wall surface 111 of the examination chamber 11 at any point, and there is a gap between the bed board 22 and the inner wall surface 111 of the examination chamber 11 at any point.
[0045] It is understandable that when an examination is required for a patient, the bed board 22 can be moved outside the examination chamber 11 via the drive assembly 30 along the first direction XX (e.g., Figure 1 After the patient lies on the bed board 22, the bed board 22 and the patient can then be moved together into the examination chamber 11 by the drive assembly 30 for examination (e.g., Figure 2 At this time, the bed board 22 is spaced apart from the inner wall 111 of the examination chamber 11. Since the bed board 22 does not contact the examination chamber 10, the vibration generated by the coil in the examination chamber 10 when the current is switched quickly is difficult to be transmitted to the bed board 22. This can prevent the patient from feeling strong vibrations, and at the same time prevent noise from being conducted to the patient along the bed board 22 and other solids. This can reduce the impact of solid-conducted noise on the patient. Most of the noise heard by the patient is conducted to the patient through the air, which can greatly reduce the noise heard by the patient. This can prevent strong noise and vibration from causing discomfort to the patient.
[0046] In some embodiments, a sound-insulating layer is provided on the inner wall surface 111 of the examination chamber 11. The sound-insulating layer can effectively prevent noise generated by the examination chamber 10 from being transmitted to the patient through the air, thereby further reducing the noise perceived by the patient. The sound-insulating layer can be sound-absorbing cotton adhered to the inner wall surface 111 of the examination chamber 11, or it can be formed by coating the inner wall surface 111 of the examination chamber 11 with sound-insulating material.
[0047] In some embodiments, the bed frame 21 is spaced apart from the examination chamber 10. It should be noted that when the bed board 22 is located outside or inside the examination chamber 11, the bed frame 21 is spaced apart from the examination chamber 10, so that no part of the bed frame 21 contacts the examination chamber 10, thereby preventing vibration and noise in the examination chamber 10 from being transmitted to the bed board 22 through the bed frame 21.
[0048] Specifically, the bed frame 21 includes a support frame 211, which passes through the examination cavity 11. The bed board 22 is disposed on the support frame 211. Support legs 212 are connected to both ends of the support frame 211 arranged along the first direction XX, and the support legs 212 are located outside the examination cavity 11. The support frame 211 is used to place and support the bed board 22, and the support legs 212 are used to connect to the ground or ceiling, providing support for the support frame 211 and the bed board 22. It is understood that in this embodiment, by passing the support frame 211 through the examination cavity 11, when the bed board 22 is moved into the examination cavity 11, the entire bed board 22 can be supported by the portion of the support frame 211 located in the examination cavity 11, thereby providing more stable support for the patient on the bed board 22 and preventing the bed board 22 from being suspended and unsupported in the examination cavity 11 and easily swaying due to vibration.
[0049] In some embodiments, the support frame 211 may be provided with weight-reducing openings 213. The weight-reducing openings 213 can reduce the overall weight of the support frame 211, thereby reducing the power consumption for driving the support frame 211 to move, and can also reduce the number of support frames 211 used, thus reducing production costs. Multiple weight-reducing openings 213 may be provided, and the multiple weight-reducing openings 213 may be arranged at intervals along a first direction XX.
[0050] In some embodiments, the drive assembly 30 is connected to the bed frame 21 via a transmission. The drive assembly 30 drives the bed frame 21 to move along the first direction XX, thereby causing the bed board 22 to move along the first direction XX. The drive assembly 30 indirectly drives the bed board 22 to move by driving the bed frame 21, so that the bed board 22 can be fixed on the bed frame 21, making the bed board 22 more stable on the bed frame 21. The drive assembly 30 can be set on the ground or ceiling, etc., without having to be set on the bed frame 21, which can avoid the user from bumping into the drive assembly 30 when lying on the bed board 22. Furthermore, the output shaft of the drive assembly 30 does not need to be directly connected to the bed board 22. When the bed board 22 moves into the inspection cavity 11, the output shaft of the drive assembly 30 does not need to extend into the inspection cavity 11, which can avoid the strong Lorentz force heating the output shaft of the drive assembly 30 and causing the output shaft temperature to become too high.
[0051] The drive assembly 30 may include a guide rail 31 and a drive component (not shown in the figure). The guide rail 31 extends along the first direction XX. The bed frame 21 is slidably connected to the guide rail 31, so that the bed frame 21 and the bed board 22 can move along the guide rail 31 in the first direction XX. The guide rail 31 provides a limit for the bed frame 21, so that the bed frame 21 slides more smoothly and stably in the first direction XX. The drive component is driven to move the bed frame 21 along the guide rail 31, so as to drive the bed board 22 to move in the first direction XX.
[0052] The driving component can be a cylinder or electric lever with a telescopic rod, in which case the output shaft of the driving component is the telescopic rod of the driving component. The telescopic rod of the driving component can be connected to the bed frame 21, and the bed frame 21 can be moved along the first direction XX by the telescopic rod of the driving component extending and retracting. Of course, the driving component can also be a motor, electric motor or other device that can drive the bed frame 21 to move. In this case, a gear transmission assembly, linkage transmission assembly or other transmission assembly can be set between the driving component and the bed frame 21, and the output shaft of the driving component is connected to the bed frame 21 through the transmission assembly. When the output shaft of the driving component rotates, it drives the transmission assembly to move, thereby driving the bed frame 21 to move along the first direction XX.
[0053] In some embodiments, the support frame 211 is provided with guide rails 31 at both ends along the first direction XX, and the support feet 212 are located between the guide rails 31 and the support frame 211, and the support feet 212 are slidably connected to the guide rails 31. When the bed frame 21 moves, the guide rails 31 at both ends of the support frame 211 provide limits for both ends of the bed frame 21, making the bed frame 21 slide more smoothly and stably in the first direction XX. The guide rails 31 can also be used to isolate all the support feet 212 from the ground or ceiling. Vibration and noise need to be transmitted to the support feet 212 through the guide rails 31, and then sequentially to the support frame 211 and the bed board 22, which can increase the loss of vibration and noise in the transmission process, thereby further reducing the vibration and noise felt by the patient.
[0054] In some embodiments, such as Figure 2 As shown, the guide rail 31 is located below the bed frame 21, allowing the guide rail 31 to be installed on the ground using screws or other devices. At this time, the drive unit can also be installed on the ground, making the installation of the guide rail 31 more stable.
[0055] In other embodiments, such as Figure 5 As shown, the guide rail 31 can be located above the bed frame 21, so that the guide rail 31 can be installed on the ceiling by screws or other devices, thereby allowing the bed body 20 to be installed in a suspended manner. The examination chamber 10 is usually placed on the ground, which can prevent the noise and vibration generated when the chamber is working from being transmitted to the bed body 20 through the ground, thereby further reducing the vibration and noise felt by the patient.
[0056] See also Figure 5 As shown, in some embodiments of this application, the magnetic resonance imaging device further includes a lifting assembly 40, which is connected to the bed frame 21 via a transmission mechanism. The lifting assembly 40 is used to drive the bed frame 21 to rise and fall, thereby driving the bed board 22 to rise and fall. It is understood that by adjusting the height of the bed frame 21 through the lifting assembly 40, the height of the bed board 22 can be adjusted. Before the patient lies down on the bed board 22, the lifting assembly 40 can drive the bed frame 21 to move downwards to lower the height of the bed board 22, making it easier for the patient to lie down on the bed board 22. Subsequently, the lifting assembly 40 can drive the bed frame 21 to move upwards to raise the height of the bed board 22, so that the height of the bed board 22 matches the height of the examination cavity 11. The bed board 22 can then be smoothly moved into the examination cavity 11, and the bottom surface of the bed board 22 will not contact the inner wall surface 111 of the examination cavity 11.
[0057] The lifting assembly 40 can be a cylinder or electric lever with a telescopic rod. The telescopic rod of the lifting assembly 40 can be connected to the bed frame 21. The bed frame 21 can be raised or lowered by the vertical extension and retraction of the telescopic rod of the lifting assembly 40. Alternatively, the lifting assembly 40 can be a motor, electric motor or other device that can drive the bed frame 21 to move. In this case, a gear transmission assembly, linkage transmission assembly or other transmission assembly can be set between the lifting assembly 40 and the bed frame 21. The output shaft of the lifting assembly 40 can be connected to the bed frame 21 through the transmission assembly. When the output shaft of the lifting assembly 40 rotates, it drives the transmission assembly to move, thereby driving the bed frame 21 to rise or fall.
[0058] In some embodiments, the lifting assembly 40 is slidably connected to the guide rail 31, and the driving member is drively connected to the lifting assembly 40. The driving member is used to drive the lifting assembly 40 to move along the guide rail 31, so as to drive the bed frame 21 and the bed board 22 to move along the first direction XX, so that when the driving member drives the lifting assembly 40 to slide along the guide rail 31, it drives the bed body 20 to move along the first direction XX, and the lifting assembly 40 can move synchronously with the bed body 20.
[0059] In some embodiments, the bed frame 21 and the bed board 22 are both made of weak magnetic materials or antimagnetic materials, such as non-magnetic steel, wood, or plastic, which can reduce the influence of magnetic fields on the bed frame 21 and the bed board 22.
[0060] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A magnetic resonance imaging device, characterized in that, include: The inspection chamber has an inspection cavity extending in a first direction; The bed frame includes a bed frame and a bed board, wherein the bed board is disposed on the bed frame and is used to place the patient; as well as, A drive assembly is connected to the bed body for driving the bed board to move along the first direction so that the bed board enters and exits the examination chamber; When the bed board is located inside the examination cavity, the bed board is spaced apart from the inner wall surface of the examination cavity.
2. The magnetic resonance imaging device according to claim 1, characterized in that, The bed frame and the examination chamber are spaced apart.
3. The magnetic resonance imaging device according to claim 1, characterized in that, The bed frame includes: A support frame is provided, which passes through the examination cavity. The bed board is provided on the support frame. Support legs are connected to both ends of the support frame arranged along the first direction. The support legs are located outside the examination cavity.
4. The magnetic resonance imaging device according to claim 1, characterized in that, The drive assembly is connected to the bed frame in a transmission manner, and the drive assembly is used to drive the bed frame to move along the first direction, so as to drive the bed board to move along the first direction.
5. The magnetic resonance imaging device according to claim 4, characterized in that, The driving component includes: A guide rail extends along the first direction, and the bed frame is slidably connected to the guide rail; A driving component is connected to the bed frame for driving the bed frame to move along the guide rail, thereby causing the bed board to move in the first direction.
6. The magnetic resonance imaging device according to claim 5, characterized in that, The guide rail is located above or below the bed frame.
7. The magnetic resonance imaging device according to claim 5, characterized in that, The bed frame includes: A support frame is provided, which passes through the examination cavity. The bed board is provided on the support frame. Support legs are connected to both ends of the support frame arranged along the first direction. The support legs are located outside the examination cavity. The support frame is provided with guide rails at both ends along the first direction, and the support foot is located between the guide rail and the support frame, and the support foot is slidably connected to the guide rail.
8. The magnetic resonance imaging device according to claim 1, characterized in that, The magnetic resonance imaging device also includes: A lifting assembly is connected to the bed frame via a transmission mechanism. The lifting assembly is used to drive the bed frame to lift and lower, thereby driving the bed board to lift and lower.
9. The magnetic resonance imaging device according to claim 8, characterized in that, The driving component includes: A guide rail extends along the first direction, and the lifting assembly is slidably connected to the guide rail; A driving component is connected to the lifting assembly for transmission. The driving component is used to drive the lifting assembly to move along the guide rail, so as to drive the bed frame and the bed board to move in the first direction.
10. The magnetic resonance imaging device according to claim 1, characterized in that, A sound insulation layer is provided on the inner wall surface of the inspection chamber.