CN117860226B - Large-caliber short-cavity interventional therapy type magnetic resonance equipment and design method thereof - Google Patents
Large-caliber short-cavity interventional therapy type magnetic resonance equipment and design method thereof Download PDFInfo
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- CN117860226B CN117860226B CN202410048353.2A CN202410048353A CN117860226B CN 117860226 B CN117860226 B CN 117860226B CN 202410048353 A CN202410048353 A CN 202410048353A CN 117860226 B CN117860226 B CN 117860226B
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- 238000002560 therapeutic procedure Methods 0.000 title claims abstract description 25
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- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 3
- 238000011477 surgical intervention Methods 0.000 claims description 3
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- 238000010586 diagram Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000002595 magnetic resonance imaging Methods 0.000 description 4
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- 238000013152 interventional procedure Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
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- 238000005481 NMR spectroscopy Methods 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
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Abstract
The invention discloses a large-caliber short-cavity interventional therapy type magnetic resonance device and a design method thereof. As the interventional magnetic resonance device, the interventional magnetic resonance device has relatively low requirements on the FOV and the shimming area relative to the diagnostic magnetic resonance device, and meanwhile, the focus and the part of a patient are positioned by the diagnostic magnetic resonance device before the actual operation, the interventional magnetic resonance device does not need to find the focus any more, but is used as real-time observation and image guidance in the operation process, thus creating an advantageous objective factor for the design and the manufacture of the large caliber and the short cavity of the magnetic resonance device. By fully utilizing the objective factors and properly adjusting the cavity length and the cavity diameter of the magnetic resonance, the cavity inner diameter of the magnetic resonance main body is increased, the cavity length is shortened, and a larger operation space is reserved for the actual interventional therapy operation of medical staff.
Description
Technical Field
The invention relates to the technical field of magnetic resonance equipment, in particular to large-caliber short-cavity interventional therapy type magnetic resonance equipment and a design method thereof.
Background
Magnetic resonance apparatuses are classified into diagnostic type and interventional type, the interventional type is also called as nuclear magnetic resonance in operation (intraoperative MRI, iMRI for short), and the diagnostic type magnetic resonance apparatus requires a large magnetic resonance field of view (FOV, field ofView) in order to find a specific location of a lesion in a scan, so that the caliber of the magnetic resonance apparatus is required to be small and the depth is required to be long.
While in actual use of the interventional magnetic resonance device, there are still some practical problems that the FOV and the shimming area of the interventional magnetic resonance device are small, and in the actual use process, the focal position of the patient needs to be aligned to the detection position of the interventional magnetic resonance device by adjusting the scanning bed, and meanwhile, because the interventional magnetic resonance device is in the use process, medical staff needs to obtain a better operation position to adjust the position of the patient, and the adjustment mode of the conventional magnetic resonance device cannot meet the actual use of the interventional magnetic resonance device;
In addition, because the intervention type magnetic resonance equipment is directly used in the operation, the conventional magnetic resonance equipment generally needs to wear a body radio frequency coil by a patient to receive magnetic resonance signals, and the radio frequency coil of the intervention type magnetic resonance equipment is required to be different from the conventional body radio frequency coil, a yielding hole for exposing an affected part of the patient is generally arranged on the body radio frequency coil of the intervention type magnetic resonance equipment and is used for the operation direct operation, at the moment, the yielding hole and the body of the patient are required to have better fitting degree, the conventional treatment type magnetic resonance radio frequency coil does not need to be used for the operation, and the fitting effect of the radio frequency coil and the body of the patient is more general.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a large-caliber short-cavity interventional therapy type magnetic resonance device and a design method thereof.
The aim of the invention can be achieved by the following technical scheme:
a large caliber short cavity interventional therapy type magnetic resonance device, comprising:
a magnetic resonance main body, a scanning bed and an adjusting mechanism;
The magnetic field intensity of the magnetic resonance main body is 1.0T-3.0T, the diameter in a cavity of the magnetic resonance main body is more than 70cm, the uniform field area of the FOV of the magnetic resonance main body is at least 20cm (X) multiplied by 20cm (Y) multiplied by 20cm (Z), and the horizontal length of the cavity of the magnetic resonance main body is less than 120 cm;
the scanning bed comprises a bottom plate and a bed plate which is slidably arranged on the bottom plate;
the adjusting mechanism comprises two groups of lifting assemblies which can independently operate, and the tops of the two groups of lifting assemblies are respectively pivoted on two sides of the bottom plate;
when the two groups of lifting components of the adjusting mechanism independently operate, the adjusting mechanism is used for adjusting the inclination angle of the bottom plate, and when the two groups of lifting components of the adjusting mechanism synchronously operate, the adjusting mechanism is used for adjusting the height of the bottom plate.
As a further aspect of the present invention, the lifting assembly includes a lifting fork and a driver for height adjustment of the lifting fork, and a screw.
As a further scheme of the invention, one end of the bottom of the lifting shear fork is rotatably arranged on a base at the inner bottom of the scanning bed, the other end of the bottom of the lifting shear fork is slidably arranged on the base through a moving block matched with a second sliding rail, and screw threads penetrate through the moving block;
one end of the top of the lifting shear fork is rotatably arranged at the bottom of the bottom plate through a pivoting part, and the other end of the top of the lifting shear fork is slidably arranged at the bottom of the bottom plate through a sliding sleeve and a sliding rod.
As a further development of the invention, the drive is provided as a servomotor with a brake.
As a further aspect of the present invention, there is provided a coil for an interventional magnetic resonance apparatus, the coil including:
the detachable radio frequency coil and the protection pad are provided with a abdication hole;
locking components are arranged on two sides of the radio frequency coil and the protection pad, and a supporting pad with adjustable height is arranged on the protection pad;
The locking degree between the radio frequency coil and the protection pad is adjusted by the locking component, and meanwhile, the body of a patient is supported by the support pad from the bottom, so that the abdication hole is better attached to the surgical intervention area of the patient.
As a further scheme of the invention, the locking component comprises a plurality of groups of buckling seats arranged on two sides of the radio frequency coil, locking buckles are arranged on the buckling seats, adjusting holes are formed in two sides of the protection pad, and the locking buckles can lock and adjust the radio frequency coil and the protection pad by penetrating through the buckling seats and the adjusting holes.
As a further scheme of the invention, the radio frequency coil is communicated with a plurality of groups of buckling seats at the two sides of the radio frequency coil, and the moving position of the radio frequency coil can be adjusted on the protection pad.
As a further scheme of the invention, the bottom of the protection pad, which is positioned at the supporting pad, is provided with a supporting air bag which can be inflated and deflated.
As a further scheme of the invention, the middle position of the supporting pad is provided with a supporting part for supporting the lumbar vertebra position of a patient, the supporting air bags are divided into a plurality of split air bags, and the middle air bag in the split air bags is positioned at the bottom of the supporting part.
The invention also provides a design method of the large-caliber short-cavity interventional therapy type magnetic resonance equipment, which is used for increasing the cavity diameter of the magnetic resonance main body (1) and reducing the axial length of the cavity by reducing the central shimming area and the FOV.
The invention has the beneficial effects that:
The application can adjust the height and the left and right inclination angles of a patient, so as to facilitate the adjustment of detection setting of interventional therapeutic magnetic resonance equipment, and can leave more operation space in an adjustable mode, thereby facilitating the operation of medical staff.
As an interventional magnetic resonance device, because the interventional magnetic resonance device has lower requirements for FOV, shimming range and magnetic field strength of magnetic resonance than the diagnostic magnetic resonance device, and the patient's patient position is already located by the diagnostic magnetic resonance device before the actual operation, the interventional magnetic resonance device no longer needs to find the affected part, but is used as a real-time observation in the operation process, and creates an advantageous objective factor for the large caliber and short cavity manufacturing of the magnetic resonance device. The cavity width and the inner cavity diameter of the magnetic resonance can be adjusted through the objective factors, so that the inner diameter of the magnetic resonance main body is increased, the horizontal cavity length is reduced, and a larger operation space is reserved for actual interventional therapy operation of medical staff.
Through the setting of the locking mode of radio frequency coil and protection pad, change the locking degree of radio frequency coil and protection pad through locking subassembly, can make radio frequency coil laminate more in patient's body surface, modes such as accessible inflation make the protection pad highly rise in addition, then support from patient's back, also can make radio frequency coil laminate more in patient's body surface, then make the hole of stepping down better laminating in patient's operation intervention area to medical staff's actual operation is convenient for.
Drawings
The invention is further described below with reference to the accompanying drawings.
Figure 1 is a schematic diagram of a therapeutic magnetic resonance apparatus in accordance with the present invention;
figure 2 is a schematic top view of a therapeutic magnetic resonance apparatus in accordance with the present invention;
figure 3 is a schematic diagram of a top view of a therapeutic magnetic resonance apparatus in accordance with a second aspect of the present invention;
figure 4 is a schematic diagram of the internal structure of a magnetic resonance subject of the present invention;
FIG. 5 is a schematic illustration of diagnostic and interventional magnetic resonance FOV differences in accordance with the present invention;
FIG. 6 is a schematic diagram of a scanning bed and an adjusting mechanism according to the present invention;
FIG. 7 is a second schematic view of the structure of the scanning bed and the adjusting mechanism of the present invention;
FIG. 8 is a schematic diagram of a RF coil according to the present invention;
FIG. 9 is a second schematic diagram of the RF coil of the present invention;
FIG. 10 is a schematic top view of a radio frequency coil of the present invention;
FIG. 11 is a third schematic diagram of the RF coil of the present invention;
FIG. 12 is a detailed schematic diagram of the structure of FIG. 11A in accordance with the present invention;
FIG. 13 is a fourth schematic diagram of the RF coil structure of the present invention;
FIG. 14 is a schematic view of the structure of the support airbag inside the support pad of the present invention;
fig. 15 is a schematic view showing an internal structure of a main body case of the radio frequency coil of the present invention;
FIG. 16 is a schematic diagram of a split structure of a RF coil and a pad according to the present invention;
Fig. 17 is a schematic diagram of a rf coil structure according to the present invention.
In the figure:
1. a magnetic resonance main body; 2. a scanning bed; 3. an adjusting mechanism; 4. a radio frequency coil; 5. a protective pad;
11. a main body housing; 12. a main coil magnet; 13. a compensation coil; 14. shimming coils; 15. passive shimming piece;
21. A base; 22. a bottom plate; 23. a bed board; 24. a housing; 25. a first slide rail; 26. a headrest;
31. A driver; 32. a screw; 33. a second slide rail; 34. a moving block; 35. lifting a scissor fork; 36. a sliding sleeve; 37. a slide bar; 38. a pivoting part; 39. a rotating seat;
41. a coil housing; 42. a relief hole; 43. a connection housing; 44. a connecting wire; 45. locking buckles; 46. a connecting plate; 47. a buckle seat; 48. penetrating holes; 49. a magic tape; 410. a radio frequency coil; 411. a circuit board; 412. a protective sleeve;
51. A bottom pad; 52. an adjustment aperture; 53. a support pad; 54. a support part; 55. a shunt joint; 56. a connecting pipe; 57. supporting the air bag.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Interventional magnetic resonance is an image guidance tool for accurate interventional therapy, magnetic Resonance (MRI) has the advantages incomparable with other imaging methods, tissue contrast is excellent, spatial resolution reaches the sub-millimeter level, and the interventional magnetic resonance is beneficial to lesion positioning and interventional guidance, and more importantly, magnetic resonance has the capabilities of multi-plane and three-dimensional volume reconstruction, so that important anatomical relations between an interventional target range and adjacent tissues can be comprehensively evaluated. During the interventional operation, a doctor can access the patient at any time, and the development of the open magnet technology and the progress of the rapid imaging technology lead the interventional treatment under the guidance of magnetic resonance to be developed. Large aperture interventions refer to interventional procedures through large diameter surgical passageways, where conventional interventional procedures require guiding the procedure through X-ray, CT, etc. imaging techniques, but these imaging techniques have limited resolution, do not provide sufficient accuracy, and at the same time produce radiation to the patient, with some risk, in contrast to the high resolution real-time imaging guidance that large aperture interventional magnetic resonance imaging systems can provide for, and make the procedure more accurate and safe.
The magnetic resonance apparatus is classified into a diagnostic type and an interventional type, the interventional type is also called an intraoperative nuclear magnetic (intraoperative MRI, iMRI for short), the diagnostic type magnetic resonance apparatus requires a large magnetic resonance field of view (FOV, field ofView) so as to find a specific position of a focus in scanning, so that the caliber of the magnetic resonance apparatus is required to be small and the depth is required to be long; in the magnetic resonance interventional therapy process, the specific position of a focus is known, so that the requirement of the interventional therapy type magnetic resonance equipment on the FOV is relatively low, the interventional therapy type magnetic resonance equipment with larger caliber and smaller depth can be obtained in a mode of reducing the FOV as shown in fig. 5, and the medical staff can perform operation conveniently.
Because the interventional magnetic resonance device has relatively low requirements on the FOV and shimming range relative to the diagnostic magnetic resonance device, the patient position of the patient is positioned by the diagnostic magnetic resonance device before the operation is actually performed, the interventional magnetic resonance device does not need to find an affected part any more, but is used as a real-time observation in the operation process, and a favorable objective factor is created for manufacturing the large caliber and the short cavity of the magnetic resonance device.
When the interventional magnetic resonance device is actually used, some practical problems still exist, as the FOV of the interventional magnetic resonance device is reduced, the focal position of a patient needs to be aligned to the detection position of the interventional magnetic resonance device by adjusting through a scanning bed in the actual use process, and meanwhile, as medical staff needs to obtain a better operation position to adjust the position of the patient in the use process of the interventional magnetic resonance device, the adjustment mode of the conventional magnetic resonance device cannot meet the actual use requirement of the interventional magnetic resonance device;
As shown in fig. 1-7, a large-caliber short-cavity interventional therapy type magnetic resonance device includes:
A magnetic resonance main body 1, a scanning bed 2 and an adjusting mechanism 3;
The scanning bed 2 includes a bottom plate 22 and a bed plate 23 slidably mounted on the bottom plate 22;
The adjusting mechanism 3 comprises two groups of lifting components which can independently operate, and the tops of the two groups of lifting components are respectively pivoted on two sides of the bottom plate 22;
When the two groups of lifting components of the adjusting mechanism 3 operate independently, the adjusting mechanism is used for adjusting the inclination angle of the bottom plate 22, and when the two groups of lifting components of the adjusting mechanism 3 operate synchronously, the adjusting mechanism is used for adjusting the height of the bottom plate 22.
Working principle: the height adjustment or inclination angle of the bottom plate 22 and the bed plate 23 can be realized through two groups of lifting components capable of independently operating, the two groups of lifting components can synchronously lift, the bottom plate 22 can maintain the horizontal height lifting adjustment, the height lifting adjustment of the conventional scanning bed 2 is realized, one of the two groups of lifting components capable of independently operating operates, the other group of lifting components does not operate, the inclination adjustment of the bottom plate 22 and the bed plate 23 along the axial position of the magnetic resonance main body 1 can be carried out, the two groups of lifting components capable of operating and not operating can be replaced, the inclination adjustment of the other direction can be carried out, and the bottom plate 22 and the bed plate 23 which slide mutually are matched.
Further embodiments, as shown in fig. 6 and 7, are more common lifting assemblies that include a lifting fork 35 and a driver 31 for height adjustment of the lifting fork 35 and a screw 32, while compromising the stability of the lifting adjustment process. The lifting scissors 35 are adopted as lifting components, and the driver 31 and the screw 32 are adopted as a driving mechanism for cross adjustment of the lifting scissors 35; compared with a conventional driving assembly such as an electric push rod, the lifting assembly of the lifting scissor type has good weight supporting effect and lifting stability, and meanwhile, the influence of a magnetic field generated by magnetic resonance equipment is relatively small, and the bearing effect of the lifting assembly also enables patients with different weights to have small lifting influence on the assembly; meanwhile, compared with the conventional lifting structures such as a cylinder, a hydraulic cylinder and the like, the lifting structure has possible failure rate, and once the failure rate appears, the lifting structure is not acceptable in medical treatment; therefore, by adopting the self-locking scissor structure, even if the driving motor fails, for example, the motor burns out, the safety of the whole device can be ensured due to the self-locking effect of the screw 32; but conventional oil leakage once leaked may cause instability.
In a further embodiment, as shown in fig. 6 and 7, since two sets of lifting scissors 35 are used as driving components and it is desired to implement the height adjustment and the inclination angle adjustment by the synchronous operation adjustment and the asynchronous operation adjustment of the two sets of lifting scissors 35, a special mounting structure is required to be provided between the lifting scissors 35 and the bottom of the base plate 22; one end of the bottom of the lifting shear fork 35 is rotatably arranged on the base 21 at the inner bottom of the scanning bed 2 through a rotating seat 39, the other end of the bottom of the lifting shear fork 35 is slidably arranged on the base 21 through a moving block 34 in cooperation with a second sliding rail 33, and a screw rod 32 is threaded through the moving block 34;
one end of the top of the lifting scissor 35 is rotatably mounted at the bottom of the bottom plate 22 through a pivot 38, and the other end of the top of the lifting scissor 35 is slidably mounted at the bottom of the bottom plate 22 through a sliding sleeve 36 and a sliding rod 37. Namely, the bottom of the lifting scissor 35 adopts a more conventional installation mode, specifically, one end is rotatably installed with the base 21, the other end is rotatably installed with the moving block 34, the second sliding rail 33 is fixedly installed on the base 21, the moving block 34 is slidably installed on the second sliding rail 33, one end of the top of the lifting scissor 35 is slidably installed in a sliding sleeve 36 and a sliding rod 37 mode to realize the sliding and rotating degrees of freedom, the other end of the top is rotatably installed at the bottom of the bottom plate 22 through a pivot joint 38, specifically, the pivot joint 38 is provided with a rotating seat and a rotating block which are rotatably installed through a rotating shaft, the rotating seat is fixed at the bottom of the bottom plate 22, the rotating block is rotatably installed at the other end of the top of the lifting scissor 35, and the installation modes enable the bottom plate 22 and the bed plate 23 to be adjusted to be inclined angles when only one group of lifting components is operated;
It should be noted that, the first slide rail 25 is disposed on the bottom plate 22, the bed plate 23 is slidably mounted on the bottom plate 22 through the first slide rail 25, the specific first slide rail 25 is made of non-magnetic material, the first slide rail 25 can be made of an actively driven slide rail, that is, a slide rail structure in the existing magnetic resonance device is directly adopted, the slide rail and the driving structure adopt non-magnetism to prevent the influence of the magnetic field, and meanwhile, the first slide rail 25 can be made of a passive slide rail, that is, a slide rail which can be directly pushed and moved by medical staff;
It should be noted that the first slide rail 25 is used to drive the movement between the base plate 22 and the bed plate 23, and the lifting assembly is used to know the height or angle of the base plate 22, so that the driving of the two components does not affect each other.
The included angle between the bottom plate 22 and the bed plate 23 after the inclination adjustment and the horizontal plane is not more than 30 degrees, the main purpose of the inclination adjustment is to adapt to the detection mode of the interventional magnetic resonance equipment, and meanwhile, enough operation space is reserved for medical staff in the operation process, and in addition, when the inclination adjustment is needed, the bed plate 23 is provided with a binding belt for binding a patient, so that the patient is prevented from sliding off the inclined bed plate.
Specifically, the side of the scanning bed 2 is provided with a housing 24, the whole of the scanning bed 2 and the housing 24 on the side are provided with magnetic shielding materials for preventing interference of the magnetic resonance device on the operation of the scanning bed 2, and in addition, a headrest 26 for supporting the neck of a patient when lying is arranged on the bed plate 23.
In a further embodiment, as shown in fig. 6 and 7, the drive 31 is provided as a servomotor with a brake. After different adjustment modes are performed through the two groups of lifting assemblies, the positioning is needed, and the braking positioning can be performed through a brake of a servo motor, so that the bed plate 23 is positioned to a certain height and a certain inclination angle.
In a further embodiment, as shown in fig. 2-5, the magnetic resonance body 1 generates a magnetic field having a strength of at least 1.0T, as indicated in fig. 2, the magnetic resonance body 1 has an inner diameter of 70cm or more, the magnetic resonance body 1 has a horizontal length of the cavity of 120cm or less, and the FOV of the magnetic resonance body 1 is at least 20cm (X) X20 cm (Y) X20 cm (Z) as indicated in fig. 5. As an interventional magnetic resonance device, because the interventional magnetic resonance device has lower requirements for FOV, shimming range and magnetic field strength of magnetic resonance than the diagnostic magnetic resonance device, and the patient's patient position is already located by the diagnostic magnetic resonance device before the actual operation, the interventional magnetic resonance device no longer needs to find the affected part, but is used as a real-time observation in the operation process, and creates an advantageous objective factor for the large caliber and short cavity manufacturing of the magnetic resonance device. The cavity width and the inner cavity diameter of the magnetic resonance can be adjusted through the objective factors, so that the inner diameter of the magnetic resonance main body 1 is increased, the horizontal cavity length is reduced, and a larger operation space is reserved for actual interventional therapy operation of medical staff.
As shown in fig. 4, the magnetic resonance main body 1 includes a main body housing 11, a magnetic field main generation assembly of a magnetic resonance device is provided inside the main body housing 11, a main coil magnet 12, a compensation coil 13, a shim coil 14, and passive shim pieces 15, wherein the passive shim pieces 15 are provided as silicon steel pieces or iron pieces.
In addition, because the intervention type magnetic resonance equipment is directly used in the operation, the conventional magnetic resonance equipment generally needs to wear a body radio frequency coil by a patient to receive magnetic resonance signals, and the radio frequency coil of the intervention type magnetic resonance equipment is required to be different from the conventional body radio frequency coil, a yielding hole for exposing an affected part of the patient is generally arranged on the body radio frequency coil of the intervention type magnetic resonance equipment and is used for the operation direct operation, at the moment, the yielding hole and the body of the patient are required to have better fitting degree, the conventional treatment type magnetic resonance radio frequency coil does not need to be used for the operation, and the fitting effect of the radio frequency coil and the body of the patient is more general.
As shown in fig. 8-17, the present invention further includes a coil for an interventional therapy type magnetic resonance apparatus, the coil including:
The detachable radio frequency coil 4 and the protection pad 5, and the radio frequency coil 4 is provided with a yielding hole 42;
locking components are arranged on two sides of the radio frequency coil 4 and the protection pad 5, the protection pad 5 comprises a bottom pad 51, and a supporting pad 53 with adjustable height is arranged on the bottom pad 51;
The locking assembly adjusts the degree of locking between the rf coil 4 and the pad 5 while the support pad 53 supports the patient's torso from the bottom so that the relief holes 42 better fit the patient's surgical intervention area.
Through the setting of the locking mode of radio frequency coil 4 and protection pad 5, change the locking degree of radio frequency coil 4 and protection pad 5 through locking subassembly, can make radio frequency coil 4 laminate more in patient's body surface, in addition modes such as the accessible is inflated and makes protection pad 5 highly rise, then supports from patient's back, also can make radio frequency coil 4 laminate more in patient's body surface, then make the hole 42 of stepping down better laminating in patient's operation intervention area, thereby medical staff's actual operation of being convenient for.
It should be noted that, although the radio frequency coil 4 of the interventional magnetic resonance device is different from the conventional radio frequency coil 4, there are several sets of yield holes 42, the size of the yield holes 42 is generally smaller, and the size of the yield holes 42 is sufficient to complete most of the conventional minimally invasive procedures as the interventional magnetic resonance device is generally used for minimally invasive procedures.
Specifically, as shown in fig. 15, the radio frequency coil 4 includes a coil housing 41, in which a radio frequency coil 410 and a circuit board 411 are uniformly distributed, the radio frequency coil 410 is used for receiving radio frequency signals generated by exciting a human body by a magnetic resonance device, the circuit board 411 is used for amplifying the radio frequency signals, the circuit board 411 is connected to a display system of the magnetic resonance device through a connection line 44, a connection shell 43 is arranged on the outside of the connection position of the circuit board 411 and the connection line 44 on the coil housing 41, and the connection position of the circuit board 411 and the connection line 44 can be protected during use;
further, the coil housing 41 is made of a flexible material, and can be attached to the body surface of the patient well,
Furthermore, in practical use, the rf coil 4 is configured to be three-sided bendable, the rf coil 4 can be better attached to the chest and two sides of the body of the patient through bending, and the protecting sleeve 412 is disposed in the coil housing 41 at the bending position of the rf coil 410, so as to prevent the rf coil 410 from being damaged during bending.
As shown in fig. 8 and 9, in a further embodiment, the locking assembly includes a plurality of groups of fastening seats 47 disposed on two sides of the rf coil 4, fastening buckles 45 are disposed on the fastening seats 47, adjusting holes 52 are disposed on two sides of the protection pad 5, and the fastening buckles 45 can perform locking adjustment on the rf coil 4 and the protection pad 5 by passing through the fastening seats 47 and the adjusting holes 52. The locking assembly is in the form of a lock catch, and the locking assembly is locked by the locking buckle 45 penetrating through the buckle seat 47 on the radio frequency coil 4 and the adjusting holes 52 on the two sides of the protection pad 5;
Specifically, as shown in fig. 11 and 12, the locking buckle 45 is a rope buckle, the rope buckle is provided with a penetrating hole 48 and a magic tape 49, the rope buckle can pass through the penetrating hole 48 and be adhered in the form of the magic tape 49 in a mode shown in fig. 12, and due to the arrangement of the rope buckle and the magic tape, the locking assembly is convenient to adjust, and meanwhile, a good locking effect can be achieved by multiple groups of locking assemblies.
Specifically, as shown in fig. 9, the two sides of the radio frequency coil 4 are provided with connecting plates 46, and the plurality of groups of buckling seats 47 are fixedly connected to the connecting plates 46, so that the plurality of groups of buckling seats 47 can be more conveniently installed by the arrangement of the connecting plates 46.
It should be noted that, the two sides of the protection pad 5 are made of non-flexible materials, so that deformation caused by pulling of the two side adjusting holes 52 by the locking buckle 45 is prevented from damaging the fitting effect of the coil and the body surface of the patient, and the middle position of the protection pad 5 can be made of flexible materials, so that the patient can have better lying comfort experience.
As shown in fig. 10, in a further embodiment, the rf coil 4 is connected to the plurality of sets of fastening seats 47 on two sides of the rf coil 4 to perform a moving position adjustment on the protection pad 5, and when the rf coil 4 is in a state where the fastening buckle 45 is not completely fastened, the rf coil 4 can slide along with the plurality of fastening buckles 45 on the protection pad 5, so that the position adjustment can be performed according to the affected part of the patient in a practical situation, so that the abdicating hole 42 is better aligned with the position to be operated of the patient, which also makes the practical adjustment more convenient for the medical staff in the operation process.
As shown in fig. 14, in a further embodiment, the pad 5 is provided with an inflatable support airbag 57 at the bottom of the support pad 53. The supporting air bag 57 is used for realizing the height adjustment of the supporting pad 53, the supporting air bag 57 can be better attached to the back line of a patient after being inflated, the patient can lie more comfortably while a better supporting effect is obtained, and as an alternative scheme, the filling of the air bag can be carried out in a liquid injection mode.
In still a further embodiment, the support pad 53 is provided with a support portion 54 for supporting the lumbar vertebra position of the patient at a middle position, and the support airbag 57 is provided as a split type plurality of airbags, and an innermost airbag among the split type plurality of airbags is located at the bottom of the support portion 54. As shown in fig. 9, the split type air bags of the support air bag 57 are arranged into three groups, and the air bag is inflated and deflated through the split joint 55, the split joint 55 is connected to the air source assembly through the connecting pipe 56, and specifically, the split joint 55 is further provided with a locking mechanism, so that the support air bag 57 can not deflate due to the weight pressure of a patient after the support air bag 57 is inflated.
The invention also provides a design method of the large-caliber short-cavity interventional therapy type magnetic resonance equipment, which is used for increasing the cavity diameter of the magnetic resonance main body 1 and reducing the axial length of the cavity by reducing the central shimming area and the FOV.
The parameters in the specific design and manufacturing process are that the magnetic field intensity of the magnetic resonance main body is 1.0T-3.0T, the inner diameter of the cavity of the magnetic resonance main body is more than 70cm, the uniform field area of the FOV of the magnetic resonance main body is at least 20cm (X) X20 cm (Y) X20 cm (Z), and the horizontal length of the cavity of the magnetic resonance main body is less than 120 cm.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing describes one embodiment of the present invention in detail, but the disclosure is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (9)
1. A large caliber short cavity interventional therapy type magnetic resonance device, comprising:
a magnetic resonance main body (1), a scanning bed (2) and an adjusting mechanism (3);
The magnetic field intensity of the magnetic resonance main body (1) is 1.0T-3.0T, the diameter of the cavity of the magnetic resonance main body (1) is more than 70cm, the shimming area of the FOV of the magnetic resonance main body (1) is at least 20cm of an X axis, 20cm of a Y axis and 20cm of a Z axis, the X axis, the Y axis and the Z axis form a three-dimensional coordinate system, and the horizontal length of the cavity of the magnetic resonance main body (1) is less than 120 cm;
the scanning bed (2) comprises a bottom plate (22) and a bed plate (23) which is slidably arranged on the bottom plate (22);
The adjusting mechanism (3) comprises two groups of lifting assemblies which can independently operate, and the tops of the two groups of lifting assemblies are respectively pivoted on two sides of the bottom plate (22);
When the two groups of lifting components of the adjusting mechanism (3) independently operate, the two groups of lifting components of the adjusting mechanism (3) are used for adjusting the inclination angle of the bottom plate (22), and when the two groups of lifting components of the adjusting mechanism (3) synchronously operate, the two groups of lifting components of the adjusting mechanism are used for adjusting the height of the bottom plate (22);
Comprising a coil for an interventional magnetic resonance device, the coil comprising:
The detachable radio frequency coil (4) and the protection pad (5), wherein a yielding hole (42) is formed in the radio frequency coil (4);
locking components are arranged on two sides of the radio frequency coil (4) and the protection pad (5), and a supporting pad (53) with adjustable height is arranged on the protection pad (5);
The locking assembly adjusts the locking degree between the radio frequency coil (4) and the protection pad (5), and meanwhile the support pad (53) supports the body of the patient from the bottom so that the abdication hole (42) is better attached to the surgical intervention area of the patient.
2. A large caliber short cavity interventional therapy type magnetic resonance apparatus according to claim 1, characterized in that the lifting assembly comprises a lifting fork (35) and a driver (31) for lifting fork (35) height adjustment and a screw (32).
3. The large-caliber short-cavity interventional therapy type magnetic resonance device according to claim 2, wherein one end of the bottom of the lifting shear fork (35) is rotatably arranged on a base (21) at the inner bottom of the scanning bed (2), the other end of the bottom of the lifting shear fork (35) is slidably arranged on the base (21) through a moving block (34) matched with a second sliding rail (33), and the screw (32) is threaded through the moving block (34);
One end of the top of the lifting shear fork (35) is rotatably arranged at the bottom of the bottom plate (22) through a pivot joint part (38), and the other end of the top of the lifting shear fork (35) is slidably arranged at the bottom of the bottom plate (22) through a sliding sleeve (36) and a sliding rod (37).
4. A large caliber short lumen interventional therapy type magnetic resonance apparatus according to claim 3, characterized in that the driver (31) is provided as a servo motor with a brake.
5. The large-caliber short-cavity interventional therapy type magnetic resonance device according to claim 1, wherein the locking assembly comprises a plurality of groups of buckling seats (47) arranged on two sides of the radio frequency coil (4), locking buckles (45) are arranged on the buckling seats (47), adjusting holes (52) are formed in two sides of the protection pad (5), and the locking buckles (45) can carry out locking adjustment on the radio frequency coil (4) and the protection pad (5) by penetrating through the buckling seats (47) and the adjusting holes (52).
6. The large-caliber short-cavity interventional therapy type magnetic resonance equipment according to claim 5, wherein the radio frequency coil (4) is communicated with a plurality of groups of buckling seats (47) on two sides of the radio frequency coil, and the moving position of the buckling seats can be adjusted on the protection pad (5).
7. A large caliber short cavity interventional therapy type magnetic resonance apparatus according to claim 1, characterized in that the bottom of the cushion (5) located at the support pad (53) is provided with an inflatable support airbag (57).
8. The large-caliber short-cavity interventional therapy type magnetic resonance device according to claim 7, wherein a supporting portion (54) for supporting the lumbar vertebra position of a patient is arranged at the middle position of the supporting pad (53), the supporting air bag (57) is formed by a plurality of split air bags, and the middle air bag in the split air bags is located at the bottom of the supporting portion (54).
9. Method of designing a large caliber short cavity interventional magnetic resonance device according to any one of claims 1-8, characterized in that by reducing the central shimming area and FOV the cavity diameter of the magnetic resonance body (1) is increased and the axial length of the cavity is reduced.
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| CN106725477B (en) * | 2016-12-05 | 2023-11-03 | 苏州众志医疗科技有限公司 | Special radio frequency coil for vertical field magnetic resonance body intervention |
| CN209713483U (en) * | 2018-11-26 | 2019-12-03 | 李成利 | A kind of magnetic resonance bed transport |
| CN210354688U (en) * | 2019-04-02 | 2020-04-21 | 佛山瑞加图医疗科技有限公司 | Magnetic resonance guiding and positioning device |
| CN113081263A (en) * | 2019-12-23 | 2021-07-09 | 武汉联影智融医疗科技有限公司 | Intervene puncture system and have its diagnosis and treatment equipment |
| CN213696899U (en) * | 2020-09-17 | 2021-07-16 | 上海联影医疗科技股份有限公司 | Magnetic resonance scanning system and medical imaging scanning system |
| CN113156350B (en) * | 2021-03-25 | 2022-07-19 | 华南理工大学 | Non-invasive light opaque micron-sized living tissue magnetic resonance tomography method and system |
| CN115414118A (en) * | 2022-08-30 | 2022-12-02 | 宁波穿山甲机电有限公司 | Head special magnetic resonance imaging operation intervention device |
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| CN103260701A (en) * | 2010-12-16 | 2013-08-21 | 皇家飞利浦电子股份有限公司 | Radiation therapy planning and follow-up system with large bore nuclear and magnetic resonance imaging or large bore CT and magnetic resonance imaging |
| CN103622695A (en) * | 2012-08-22 | 2014-03-12 | 三星电子株式会社 | Magnetic resonance imaging apparatus and control method for the same |
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