Treatment bed and nuclear magnetic resonance equipment

Abstract

The utility model belongs to the technical field of noninvasive medical treatment, and particularly relates to a treatment bed and nuclear magnetic resonance equipment. The treatment bed comprises a bed body, a treatment probe and an anti-interference device, wherein the bed body is used for bearing a patient; the treatment probe is arranged in the bed body and can move to the wounded part of the patient; the anti-interference device is arranged on the bed body, the geometric center of the anti-interference device coincides with the geometric center of the treatment probe, and the anti-interference device can generate an induced magnetic field. The direction of an induced magnetic field formed by the anti-interference device is opposite to that of a magnetic field generated by the nuclear magnetic resonance equipment, and the induced magnetic field can hinder the magnetic flux change when the magnetic field generated by the nuclear magnetic resonance equipment penetrates through the anti-interference device, so that the energy of an electromagnetic field of the magnetic field generated by the nuclear magnetic resonance equipment in the scanning process is reduced; the impedance mismatch of the load end of the body coil of the nuclear magnetic resonance equipment is reduced, and the scanning success rate of the nuclear magnetic resonance equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of non-invasive medical treatment, in particular to a treatment bed and a nuclear magnetic resonance device. Background Art

[0002] Magnetic wave knife is a new treatment technology. It uses nuclear magnetic resonance equipment to locate and scan human tissues, and then transmits the scanned images to the focused ultrasound system to guide the focused ultrasound system to heat specific tissue areas in the body, and use the thermal effect of ultrasound to ablate local specific tissues, such as uterine fibroids and bone tumors, to achieve the purpose of non-invasive treatment.

[0003] In the prior art, when the focused ultrasound therapy system works in a nuclear magnetic resonance environment, it will cause impedance mismatch at the load end of the body coil of the nuclear magnetic resonance device, resulting in an increase in the reflection coefficient of the body coil. When the reflection coefficient of the body coil increases to a certain extent and exceeds the reflection coefficient threshold set by the nuclear magnetic resonance device, frequent errors will occur during the scanning process of the nuclear magnetic resonance device, resulting in the failure of the nuclear magnetic resonance device to scan, and then the focused ultrasound system cannot complete the treatment. Utility Model Content

[0004] The utility model aims to provide a treatment bed and a nuclear magnetic resonance device to solve the problem in the prior art that when a focused ultrasound treatment system works in a nuclear magnetic resonance environment, an impedance mismatch may occur at the load end of a body coil of the nuclear magnetic resonance device, and a reflection coefficient of the body coil may exceed a reflection coefficient threshold set by the nuclear magnetic resonance device, resulting in a failure in scanning the nuclear magnetic resonance device, and further resulting in the inability of the focused ultrasound system to complete treatment, thereby improving the success rate of scanning of the nuclear magnetic resonance device.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Treatment couch, including:

[0007] A bed, a treatment probe and an anti-interference device, wherein the bed is used to carry a patient; the treatment probe is arranged inside the bed and can be moved to the injured part of the patient; the anti-interference device is placed on the bed, the geometric center of the anti-interference device coincides with the geometric center of the treatment probe, and the anti-interference device can generate an induced magnetic field.

[0008] As an optional technical solution for the treatment bed, the anti-interference device includes a frame, and the frame is enclosed in a closed shape.

[0009] As an optional technical solution for the treatment bed, the closed shape is a regular geometric figure.

[0010] As an optional technical solution for the treatment bed, a plurality of the frames are provided, and the plurality of frames are stacked in a vertical direction and connected by a connecting assembly.

[0011] As an optional technical solution for the treatment bed, the frame is provided with a connecting hole, and the connecting assembly includes a connecting rod, and both ends of the connecting rod are respectively plugged into the connecting holes corresponding to the positions on two adjacent frames to connect the two adjacent frames.

[0012] As an optional technical solution for the treatment bed, a plurality of connection holes are arranged at intervals.

[0013] As an optional technical solution for the treatment bed, the connecting rod includes a first rod and a second rod, the diameter of the second rod is smaller than the diameter of the first rod and is sleeved in the first rod, and the first rod and the second rod can move relative to each other to change the distance between two adjacent frames.

[0014] As an optional technical solution of the treatment bed, the connecting assembly further includes a fixing member, and the fixing member can abut against the first rod member and the second rod member to limit the relative movement between the first rod member and the second rod member.

[0015] As an optional technical solution for the treatment bed, the anti-interference device is made of conductive material.

[0016] The nuclear magnetic resonance device comprises a body and the above-mentioned treatment bed, wherein the body can accommodate the treatment bed.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a treatment bed, which includes a bed body, a treatment probe and an anti-interference device. The bed body is used to carry a patient; the treatment probe is arranged inside the bed body and can be moved to the patient's injured part; the anti-interference device is placed on the bed body, the geometric center of the anti-interference device coincides with the geometric center of the treatment probe, and the anti-interference device can generate an induced magnetic field. The induced magnetic field formed by the anti-interference device is opposite in direction to the magnetic field generated by the nuclear magnetic resonance device, and the induced magnetic field will hinder the change of magnetic flux when the magnetic field generated by the nuclear magnetic resonance device passes through the anti-interference device, reduce the energy of the electromagnetic field of the magnetic field generated by the nuclear magnetic resonance device during the scanning process, so as to reduce the impedance mismatch of the load end of the body coil of the nuclear magnetic resonance device, and improve the success rate of the nuclear magnetic resonance device scanning.

[0019] The utility model provides a nuclear magnetic resonance device, comprising a body and a treatment bed, wherein the body can accommodate the treatment bed. The treatment bed can realize the function of reducing the energy of the electromagnetic field of the magnetic field generated by the nuclear magnetic resonance device during the scanning process, so as to achieve the purpose of reducing the impedance mismatch of the load end of the body coil of the nuclear magnetic resonance device, thereby improving the success rate of the nuclear magnetic resonance device scanning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a top view of a treatment bed provided by an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of an anti-interference device of a treatment bed provided in an embodiment of the utility model.

[0022] In the figure:

[0023] 10. Bed;

[0024] 20. Treatment probe;

[0025] 30. Anti-interference device; 31. Frame; 311. Connection hole;

[0026] 40. Connecting assembly; 41. Connecting rod; 411. First rod; 412. Second rod; 42. Fixing member. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] In the prior art, when the focused ultrasound therapy system works in a nuclear magnetic resonance environment, it will cause impedance mismatch at the load end of the body coil of the nuclear magnetic resonance device, resulting in an increase in the reflection coefficient of the body coil. When the reflection coefficient of the body coil increases to a certain extent and exceeds the reflection coefficient threshold set by the nuclear magnetic resonance device, frequent errors will occur during the scanning process of the nuclear magnetic resonance device, resulting in the failure of the nuclear magnetic resonance device to scan, and then the focused ultrasound system cannot complete the treatment.

[0032] In order to solve the above problems, the utility model provides a treatment bed. Figure 1 1 is a top view of a treatment bed provided by an embodiment of the utility model. Figure 1 The treatment bed includes a bed body 10, a treatment probe 20 and an anti-interference device 30. The bed body 10 is used to carry the patient; the treatment probe 20 is arranged inside the bed body 10 and can be moved to the patient's injured part; the anti-interference device 30 is placed on the bed body 10, and the geometric center of the anti-interference device 30 coincides with the geometric center of the treatment probe 20, and the anti-interference device 30 can generate an induced magnetic field. The induced magnetic field formed by the anti-interference device 30 is opposite to the magnetic field generated by the nuclear magnetic resonance device. The induced magnetic field will hinder the change of magnetic flux when the magnetic field generated by the nuclear magnetic resonance device passes through the anti-interference device 30, reduce the energy of the electromagnetic field of the magnetic field generated by the nuclear magnetic resonance device during the scanning process, so as to reduce the impedance mismatch at the load end of the body coil of the nuclear magnetic resonance device, and improve the success rate of the nuclear magnetic resonance device scanning.

[0033] Further, Figure 2 Schematic diagram of the structure of the anti-interference device of the treatment bed provided by the embodiment of the utility model. Figure 2 , the anti-interference device 30 includes a frame 31, and the frame 31 is enclosed in a closed shape. Specifically, the anti-interference device 30 is made of a conductive material. When the frame 31 is enclosed in a closed shape, the frame 31 can form a closed conductor. During the scanning process of the nuclear magnetic resonance device, the changing magnetic field of the nuclear magnetic resonance forms an induced current on the surface of the frame 31, and the changing induced current further forms an induced magnetic field. Specifically, the closed shape is a regular geometric figure. When the geometric center of the frame 31 coincides with the treatment probe 20, the regular geometric figure can form a uniform induced magnetic field, which is beneficial to reducing the impedance mismatch at the load end of the body coil of the nuclear magnetic resonance device. In this embodiment, the frame 31 is closed to form a square. In other embodiments, the frame 31 can be closed to form a circle or an equilateral triangle.

[0034] Further, a plurality of frames 31 are provided, and the plurality of frames 31 are stacked in the vertical direction and connected by the connecting assembly 40. The length, width and height of the frame 31 need to be determined according to the relative positional relationship between the frame 31 and the treatment probe 20. A plurality of detachable frames 31 are provided to match different nuclear magnetic resonance main magnet apertures and treatment bed bed 10 sizes, thereby increasing the versatility of the anti-interference device 30.

[0035] Specifically, the frame 31 is provided with connection holes 311, and the connection assembly 40 includes a connection rod 41, and the two ends of the connection rod 41 are respectively plugged into the connection holes 311 corresponding to the positions of the two adjacent frames 31 to connect the two adjacent frames 31. A plurality of connection holes 311 are arranged at intervals. In this embodiment, the connection holes 311 are arranged at the four corners of the frame 31. In other embodiments, the connection holes 311 can also be arranged on the four sides of the frame 31.

[0036] The connection method of the multiple frames 31 is not limited to plug-in connection, and screw connection or clip connection can also be used, which will not be listed here one by one.

[0037] Furthermore, the connecting rod 41 includes a first rod 411 and a second rod 412. The diameter of the second rod 412 is smaller than that of the first rod 411 and is sleeved in the first rod 411. The first rod 411 and the second rod 412 can move relative to each other to change the distance between two adjacent frames 31. The connecting rod 41 is configured to be retractable to adjust the distance between two adjacent frames 31, so that the height adjustment of the anti-interference device 30 is more accurate.

[0038] Furthermore, the connection assembly 40 further includes a fixing member 42, which can abut against the first rod 411 and the second rod 412 to limit the relative movement between the first rod 411 and the second rod 412. In this embodiment, the fixing member 42 is configured as a stepped hollow tube, which matches the outer diameters of the first rod 411 and the second rod 412, respectively, to abut against the peripheral walls of the first rod 411 and the second rod 412. In order to increase the friction between the fixing member 42 and the first rod 411 and the second rod 412, the fixing member 42 can be made of rubber material or soft plastic material.

[0039] This embodiment also provides a nuclear magnetic resonance device, including a body and a treatment bed, wherein the body can accommodate the treatment bed. The treatment bed can realize the function of reducing the energy of the electromagnetic field of the magnetic field generated by the nuclear magnetic resonance device during the scanning process, so as to achieve the purpose of reducing the impedance mismatch of the load end of the body coil of the nuclear magnetic resonance device, thereby improving the success rate of the nuclear magnetic resonance device scanning.

[0040] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A treatment bed, characterized in that: include: A bed body (10), wherein the bed body (10) is used to carry a patient; A treatment probe (20), the treatment probe (20) being arranged inside the bed (10) and being movable to the injured part of the patient; An anti-interference device (30), wherein the anti-interference device (30) is placed on the bed (10), the geometric center of the anti-interference device (30) coincides with the geometric center of the treatment probe (20), and the anti-interference device (30) can generate an induced magnetic field.

2. The treatment bed according to claim 1, characterized in that: The anti-interference device (30) comprises a frame (31), and the frame (31) is arranged in a closed shape.

3. The treatment bed according to claim 2, characterized in that: The closed shape is a regular geometric figure.

4. The treatment bed according to claim 2, characterized in that: A plurality of the frames (31) are provided, and the plurality of frames (31) are stacked in a vertical direction and connected via a connecting assembly (40).

5. The treatment bed according to claim 4, characterized in that: The frame (31) is provided with a connection hole (311), and the connection assembly (40) comprises a connection rod (41), and two ends of the connection rod (41) are respectively plugged into the connection holes (311) corresponding to the positions of two adjacent frames (31) to connect the two adjacent frames (31).

6. The treatment bed according to claim 5, characterized in that: A plurality of connection holes (311) are arranged at intervals.

7. The treatment bed according to claim 5, characterized in that: The connecting rod (41) comprises a first rod member (411) and a second rod member (412); the diameter of the second rod member (412) is smaller than the diameter of the first rod member (411) and is sleeved in the first rod member (411); the first rod member (411) and the second rod member (412) can move relative to each other to change the distance between two adjacent frames (31).

8. The treatment bed according to claim 7, characterized in that: The connecting assembly (40) further comprises a fixing member (42), wherein the fixing member (42) can abut against the first rod member (411) and the second rod member (412) to limit the relative movement between the first rod member (411) and the second rod member (412).

9. The treatment bed according to any one of claims 1 to 8, characterized in that: The anti-interference device (30) is made of conductive material.

10. A nuclear magnetic resonance apparatus comprising a body, characterized in that It also includes the treatment bed as described in any one of claims 1 to 9, and the body can accommodate the treatment bed.

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