CN111685762A - Rotatable liquid helium-free superconducting magnetic resonance instrument - Google Patents
Rotatable liquid helium-free superconducting magnetic resonance instrument Download PDFInfo
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- CN111685762A CN111685762A CN202010363291.6A CN202010363291A CN111685762A CN 111685762 A CN111685762 A CN 111685762A CN 202010363291 A CN202010363291 A CN 202010363291A CN 111685762 A CN111685762 A CN 111685762A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/37—Restraining devices for the body or for body parts, e.g. slings; Restraining shirts
- A61F5/3769—Restraining devices for the body or for body parts, e.g. slings; Restraining shirts for attaching the body to beds, wheel-chairs or the like
- A61F5/3776—Restraining devices for the body or for body parts, e.g. slings; Restraining shirts for attaching the body to beds, wheel-chairs or the like by means of a blanket or belts
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Abstract
The invention relates to a rotatable liquid-helium-free superconducting magnetic resonance instrument, which relates to the technical field of magnetic resonance and comprises a nuclear magnetic resonance scanning system and a movable detection bed connected to the nuclear magnetic resonance scanning system in a sliding manner, wherein the nuclear magnetic resonance scanning system comprises two supporting columns, a scanning device rotationally connected between the two supporting columns and a driving component driving the scanning device to rotate; the driving assembly comprises a driving motor which is fixed on one side of the supporting column far away from the scanning device and an output shaft of which is connected with the scanning device. The invention has the advantages that the lying posture of the patient during detection can be adjusted according to different detection parts and systems, and the accuracy of the result of the patient during detection is improved.
Description
Technical Field
The invention relates to the technical field of magnetic resonance, in particular to a rotatable liquid-helium-free superconducting magnetic resonance instrument.
Background
Magnetic resonance refers to the phenomenon of spin magnetic resonance (spin magnetic resonance). It has a wide meaning, including Nuclear Magnetic Resonance (NMR), Electron Paramagnetic Resonance (EPR), or Electron Spin Resonance (ESR); in addition, Magnetic Resonance, which is a common term in daily life, refers to Magnetic Resonance Imaging (MRI), which is a type of Imaging apparatus for medical examination made by using the phenomenon of nuclear Magnetic Resonance.
Chinese patent with publication number CN106093815A discloses a nuclear magnetic resonance device, including removal detection bed and nuclear magnetic resonance scanning system, the removal is detected and is equipped with the propulsion bed board on the bed, it is equipped with the sponge cushion to impel the bed board upside, impel the bed board downside and be equipped with the fixed pulley bottom plate, fixed pulley bottom plate front side is equipped with adjustable fender, fixed pulley bottom plate downside is equipped with fixed supporting bench, fixed supporting bench downside is equipped with the under casing, the under casing front side is equipped with convenient step, the under casing left side is equipped with the scanning system connector, be equipped with fixed lock on the scanning system connector, scanning system connector downside is equipped with the ground fixing base.
The above prior art solutions have the following drawbacks: when the device is used, a patient can only image in a lying posture, and images of a skeletal muscle system, a nervous system and other systems of the patient in different postures are different, so that the detection result of the patient in imaging through the device is not accurate enough, and the improvement space is provided.
Disclosure of Invention
The existing superconducting magnetic resonance system adopts liquid helium as a refrigerant, a superconducting coil is soaked in the liquid helium and sealed in a 4K Dewar, the 4K Dewar is connected with a magnet shell through a suspension structure such as a carbon fiber pull rod, and meanwhile, in order to prevent a large amount of helium from leaking instantly during quench, a magnet must be connected with an emergency quench pipeline; due to the complex suspension structure and the quench pipeline, the rotation attitude of the traditional superconducting magnetic resonance system cannot be detected.
Aiming at the defects in the prior art, the invention aims to provide a rotatable liquid-helium-free superconducting magnetic resonance instrument, the system adopts a liquid-helium-free superconducting magnet, and because the magnet does not contain liquid helium, the magnet has a simple suspension structure, no quench pipeline is needed, the lying posture of a patient during detection can be adjusted according to different detection parts and systems, and the accuracy of the result during detection of the patient is improved.
The above object of the present invention is achieved by the following technical solutions:
a rotatable liquid helium-free superconducting magnetic resonance instrument comprises a nuclear magnetic resonance scanning system and a movable detection bed connected to the nuclear magnetic resonance scanning system in a sliding mode, wherein the nuclear magnetic resonance scanning system comprises two supporting columns, a scanning device connected between the two supporting columns in a rotating mode and a driving assembly driving the scanning device to rotate;
the driving assembly comprises a driving motor which is fixed on one side of the supporting column far away from the scanning device and an output shaft of which is connected with the scanning device.
By adopting the technical scheme, the scanning device is rotationally connected to the two supporting columns, so that when the patient is detected through the resonance instrument, the patient can be adjusted to lie postures during detection according to different detection parts and systems, and the accuracy of the result during detection of the patient is improved.
The present invention in a preferred example may be further configured to: be fixed with two axis of rotation that are relative setting on scanning device's the lateral wall, the axis of rotation one-to-one is worn to locate the upside of support column and is rotated with the support column and is connected, drive assembly still include the key-type connect in an epaxial gear wheel of rotation and key-type connect in driving motor's output shaft on and with gear wheel engagement's pinion, be close to still be equipped with the locking cylinder on driving motor's the support column, the piston rod of locking cylinder sets up and runs through the support column towards the gear wheel, be fixed with the locking piece with gear wheel intermeshing on the piston rod of locking cylinder.
Through adopting above-mentioned technical scheme, driving motor orders about scanning device and rotates to the angle that needs after, the locking cylinder orders about locking piece and gear wheel intermeshing to lock the gear wheel, scanning device's stability when having improved the detection has improved the accuracy that the patient detected through the nuclear magnetic resonance appearance.
The present invention in a preferred example may be further configured to: the movable detection bed is arranged in the inner hole of the scanning device in a penetrating mode and connected with the scanning device in a sliding mode, a pedal is arranged at one end of the movable detection bed, and a power assembly driving the movable detection bed to move along the axial direction of the scanning device is further arranged in the inner hole of the scanning device.
By adopting the technical scheme, the pedals are used for being stepped by people, so that a patient is not easy to slide off the movable detection bed when the scanning device rotates, and the safety of the nuclear magnetic resonance apparatus during use is improved; the mobile detection bed is connected in the inner hole of the scanning device in a sliding manner, and the mobile detection bed is driven to slide by the power assembly, so that a patient can lie on the mobile detection bed firstly when detecting, the mobile detection bed is driven to move by the power assembly, the patient is conveyed into the inner hole of the scanning device to be detected, and the convenience of the nuclear magnetic resonance spectrometer during use is improved.
The present invention in a preferred example may be further configured to: the power assembly comprises a spur rack arranged on the lower side of the movable detection bed, a power gear which is rotatably connected to the scanning device and is meshed with the spur rack, and a power motor which is fixed on the scanning device and has an output shaft connected with the power gear.
By adopting the technical scheme, the power gear is driven to rotate by the power motor, the straight rack is driven to move along the axis of the scanning device by the power gear through the meshing with the straight rack, the movement is stable, and the stability of the movable detection bed during movement is improved.
The present invention in a preferred example may be further configured to: still include at least one and locate the constraint subassembly that removes detection bed upside, the constraint subassembly is including locating the removal and detecting the bed upside and along removing the sub-magic subsides that detection bed length direction set up, at least two along removing the setting of detection bed length direction and one end with remove the constraint area that the detection bed is connected with locate the other end in constraint area and paste the complex female magic subsides with sub-magic.
Through adopting above-mentioned technical scheme, the patient can fix the patient through the constraint area after lying on the removal detection bed to make scanning device when rotating, the patient is difficult for taking place to slide on the removal detection bed, has improved the stability of patient when lying on the removal detection bed.
The present invention in a preferred example may be further configured to: the constraint subassembly still includes fixed connection and takes the sliding block that is close to removal detection bed one end in the constraint, the both sides of removing the detection bed are all seted up and are supplied the sliding block to inlay the groove that slides of establishing.
Through adopting above-mentioned technical scheme, the position in constraint area can be adjusted through the slip in sliding block and the groove that slides to fix the patient of different heights, improved the application scope of constraint subassembly.
The present invention in a preferred example may be further configured to: still be equipped with the locking tooth of a plurality of even settings on the removal detection bed, locking tooth an organic whole is located on the lateral wall relative with the groove tank bottom that slides, an organic whole is equipped with the meshing tooth with locking tooth intermeshing on the sliding block, one side that the meshing tooth was kept away from to the sliding block is equipped with compression spring, compression spring's one end and the groove tank bottom butt of sliding block butt other end and sliding tank.
Through adopting above-mentioned technical scheme, after the position control of sliding block was accomplished, can lock through the meshing of locking tooth and meshing tooth, make after fixed to the patient, the position of sliding block and constraint area is difficult for taking place the change, and then makes the patient be difficult for taking place relative slip with the removal detection bed, has improved the stability of patient when lying on the removal detection bed.
The present invention in a preferred example may be further configured to: and a detection bed supporting table is arranged on one side of the scanning device.
Through adopting above-mentioned technical scheme, detect the setting of bed brace table, support partial roll-off scanning device's removal detection bed, the patient lies in when removing the part that the detection bed stretches out scanning device, and the removal is detected the difficult emergence of bed and is buckled because of patient's gravity, has improved the life that removes the detection bed.
The present invention in a preferred example may be further configured to: the scanning device comprises a vacuum cylinder, a first supporting plate arranged at one end of an opening of the vacuum cylinder, an inner cylinder which is fixed at one side of the first supporting plate close to the vacuum cylinder and is concentrically arranged with the vacuum cylinder, a first supporting cylinder which is sleeved on the inner cylinder and one end of which is fixed with the first supporting plate, a cold shield upper end plate which is fixed at one end of the first supporting cylinder far away from the first supporting plate, a cold shield cylinder which is penetrated in the first supporting cylinder and one end of which is fixed with the cold shield upper end plate, a cold shield lower end plate which is fixed at one end of the cold shield cylinder far away from the cold shield upper end plate, a second supporting cylinder which is embedded in the cold shield cylinder and one end of which is fixed with the cold shield upper end plate, a second supporting plate which is fixed at the other end of the second supporting cylinder, a superconducting magnet which is sleeved on the inner;
the vacuum cylinder is connected with the first supporting plate and the inner cylinder in a sealing mode, the first supporting cylinder is connected with the cold screen upper end plate, the first supporting plate and the inner cylinder in a sealing mode, the cold screen cylinder is connected with the cold screen upper end plate, the cold screen lower end plate and the inner cylinder in a sealing mode, and the second supporting cylinder is connected with the second supporting plate, the cold screen upper end plate and the inner cylinder in a sealing mode.
By adopting the technical scheme, the conventional superconducting magnetic resonance system adopts liquid helium as a refrigerant, a superconducting coil is soaked in the liquid helium and sealed in a 4K Dewar, the 4K Dewar is connected with a magnet shell through a suspension structure such as a carbon fiber pull rod, and meanwhile, in order to prevent a large amount of helium from leaking instantly during quench, a magnet is required to be connected with an emergency quench pipeline; due to the complex suspension structure and the quench pipeline, the rotation attitude of the traditional superconducting magnetic resonance system cannot be detected; the resonance instrument adopts the refrigerator to create a temperature environment for the operation of the superconducting magnet, thereby ensuring the normal use of the superconducting magnet and further ensuring the normal operation of the nuclear magnetic resonance instrument.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the lying posture of the patient during detection can be adjusted according to different detection parts and systems, so that the accuracy of the result of the patient during detection is improved;
2. the position of constraint area can be adjusted through the slip in sliding block and sliding groove to the patient to different heights fixes, has improved the application scope of constraint subassembly, and then has improved the application scope of nuclear magnetic resonance appearance.
Drawings
FIG. 1 is a schematic diagram of a rotatable liquid-helium-free superconducting magnetic resonance apparatus.
Fig. 2 is a full sectional view of the scanning device.
Fig. 3 is an exploded view of the driving assembly, the supporting column, the locking cylinder, the locking block and the limiting block.
Fig. 4 is a schematic structural diagram of the scanning device and the mobile detection bed.
FIG. 5 is a schematic diagram of the structure of the mobile test bed and the power assembly.
FIG. 6 is a top view of the mobile detection bed.
Fig. 7 is a view from a-a in fig. 6.
Fig. 8 is an enlarged view of a portion B in fig. 7.
Fig. 9 is a schematic partial exploded view of a restraining strip and a mobile test bed.
Fig. 10 is an enlarged view of a portion C in fig. 9.
In the figure, 1, a detection bed is moved; 11. a pedal; 12. a sliding groove; 13. a locking tooth; 14. a detection bed support table; 2. a nuclear magnetic resonance scanning system; 21. a support pillar; 211. a rotating shaft; 22. a scanning device; 221. a vacuum cylinder; 222. a first support plate; 2221. a support frame; 223. an inner barrel; 2231. positioning blocks; 224. a first support cylinder; 225. an upper end plate of the cold shield; 226. a cold shield cylinder; 227. a cold shield lower end plate; 228. a second support cylinder; 229. a second support plate; 2291. a superconducting magnet; 2292. a refrigerator; 23. a drive assembly; 231. a drive motor; 232. a bull gear; 233. a pinion gear; 234. locking the air cylinder; 235. a locking block; 236. a limiting block; 24. a power assembly; 241. straight rack; 242. a power gear; 243. a power motor; 3. a tie-down assembly; 31. a sub-magic tape; 32. a binding belt; 33. female magic tape; 34. a sliding block; 341. meshing teeth; 35. compressing the spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the rotatable liquid-helium-free superconducting magnetic resonance apparatus disclosed by the invention comprises a movable detection bed 1 and a nuclear magnetic resonance scanning system 2, wherein the nuclear magnetic resonance scanning system 2 comprises two supporting columns 21, two scanning devices 22 and a driving assembly 23, the scanning devices 22 are rotatably connected between the two supporting columns 21, the driving assembly 23 is used for driving the scanning devices 22 to rotate, and the movable detection bed 1 is arranged in an inner hole of the scanning devices 22 in a penetrating manner and is connected with the scanning devices 22 in a sliding manner; one side of the scanning device 22 is provided with a detection bed supporting table 14, the detection bed supporting table 14 is used for supporting the movable detection bed 1 extending out of the scanning device 22, and one end of the movable detection bed 1 close to the detection bed supporting table 14 is integrally provided with a pedal 11 for a patient to step on when lying on the movable detection bed 1, so that the patient is not easy to slide off the movable detection bed 1 when the scanning device 22 rotates.
Referring to fig. 1 and 2, the scanning device 22 includes a vacuum cylinder 221, a first support plate 222, an inner cylinder 223, a first support cylinder 224, a cold shield upper end plate 225, a cold shield cylinder 226, a cold shield lower end plate 227, a second support cylinder 228, a second support plate 229, a superconducting magnet 2291 and a refrigerator 2292, the lower end of the vacuum cylinder 221 is open, the upper end plate of the vacuum cylinder 221 is provided with an inner hole having the same inner diameter as the inner cylinder 223, the inner cylinder 223 is embedded in the vacuum cylinder 221, the upper end of the inner cylinder 223 is fixed on the upper end plate of the vacuum cylinder 221 and is concentrically arranged with the vacuum cylinder 221, the first support plate 222 is fixed on the lower end of the vacuum cylinder 221, the first support plate 222 has an inner hole having the same inner diameter as the inner cylinder 223, the vacuum cylinder 221 is hermetically connected with the inner cylinder 223 and the first support plate 222, the first support cylinder 224 is fixed on the upper side of the first support cylinder 222 and is concentrically arranged with the inner cylinder 223, the cold shield upper end plate, the first support cylinder 224 is hermetically connected with the first support plate 222 and the cold shield upper end plate 225, the cold shield upper end plate 225 is sleeved on the inner cylinder 223 and is hermetically connected with the outer side wall of the inner cylinder 223, the cold shield cylinder 226 is fixed on the lower side of the cold shield upper end plate 225 and is hermetically connected with the cold shield upper end plate 225, the cold shield cylinder 226 is concentrically arranged with the inner cylinder 223, the cold shield lower end plate 227 is fixed on the lower side of the cold shield cylinder 226 and is hermetically connected with the cold shield cylinder 226, the cold shield lower end plate 227 is concentrically arranged with the inner cylinder 223, the cold shield lower end plate 227 is sleeved on the inner cylinder 223 and is hermetically connected with the inner cylinder 223, the second support cylinder 228 is fixed on the lower side of the cold shield upper end plate 225 and is hermetically connected with the cold shield upper end plate 225, the second support cylinder 228 is embedded in the cold shield cylinder 226 and is concentrically arranged with the inner cylinder 223, the second support plate 229 is fixed on the lower side of the second support cylinder 228 and is hermetically connected with the second support cylinder 228, the second support, a superconducting magnet 2291 is sleeved on the inner cylinder 223, the lower end of the superconducting magnet is fixed on the second support plate 229, the superconducting magnet 2291 and the inner cylinder 223 are concentrically arranged, the superconducting magnet 2291 is arranged in a closed cavity formed by the second support cylinder 228, the inner cylinder 223, the cold shield upper end plate 225 and the second support plate 229, the refrigerator 2292 is fixed on the upper end plate of the vacuum cylinder 221, a primary cold head of the refrigerator 2292 is connected with the closed cavity formed by the cold shield cylinder 226, the cold shield upper end plate 225 and the cold shield lower end plate 227, a secondary cold head of the refrigerator 2292 is connected with the closed cavity formed by the second support cylinder 228, the second support plate 229 and the cold shield upper end plate 225, the refrigerator 2292 refrigerates the two closed cavities outside the superconducting magnet 2291, the temperature of the closed cavity formed by the cold shield cylinder 226, the cold shield upper end plate 225 and the cold shield lower end plate 227 is higher than the temperature of the closed cavity formed by the second support cylinder 228, the inner cylinder 223, the cold, so as to conveniently build the environment for normal operation of the superconducting magnet 2291.
Referring to fig. 1 and 3, two rotating shafts 211 which are arranged oppositely are integrally arranged on the outer side wall of the vacuum cylinder 221, the two rotating shafts 211 are correspondingly arranged on the two supporting columns 21 in a penetrating manner, and the rotating shafts 211 are rotatably connected with the supporting columns 21; the driving assembly 23 includes a driving motor 231, and the driving motor 231 is connected to a rotating shaft 211 to rotate the vacuum cylinder 221.
The driving assembly 23 further comprises a large gear 232 and a small gear 233, the driving motor 231 is mounted on one support column 21, an output shaft of the driving motor 231 is arranged towards the vacuum cylinder 221, the output shaft of the driving motor 231 penetrates through the support column 21 and extends out of the support column 21, the small gear 233 is sleeved on the output shaft of the driving motor 231 extending out of the support column 21, the small gear 233 is in key connection with the output shaft of the driving motor 231, the large gear 232 is sleeved on a rotating shaft 211 and is in key connection with the rotating shaft 211, and the large gear 232 is meshed with the small gear 233; a locking cylinder 234 is further mounted on the supporting column 21 close to the driving motor 231, a piston rod of the locking cylinder 234 is arranged towards the vacuum cylinder 221, the piston rod of the locking cylinder 234 penetrates through the supporting column 21 and extends out of the supporting column 21, a locking block 235 is fixed on the piston rod of the locking cylinder 234 extending out of the supporting column 21, and the locking block 235 is meshed with the large gear 232; when the driving motor 231 drives the vacuum cylinder 221 to rotate, the piston rod of the locking cylinder 234 extends out to drive the locking block 235 to be separated from the large gear 232, and after the angle adjustment of the vacuum cylinder 221 is completed, the piston rod of the locking cylinder 234 contracts to drive the locking block 235 to be meshed with the large gear 232 to lock the large gear 232, so that the stability of the vacuum cylinder 221 during patient detection is improved; at least one limiting block 236 is further fixed on the supporting column 21 for installing the driving motor 231 by screws, the number of the limiting blocks 236 is preferably two, the two limiting blocks 236 are fixed on one side of the supporting column 21 close to the large gear 232 by screws, and the two limiting blocks 236 abut against the upper side and the lower side of the locking block 235 so as to limit the locking block 235.
Referring to fig. 4 and 5, the movable detection bed 1 is inserted into the inner cylinder 223 and slidably connected with the inner cylinder 223, the lower side of the movable detection bed 1 is abutted to the inner cylinder 223 to slide, two positioning blocks 2231 are fixed on the inner side wall of the inner cylinder 223, the positioning blocks 2231 are abutted to the upper sides of the two side edges of the movable detection bed 1 to position the movable detection bed 1, so that the movable detection bed 1 is not easy to shake in the inner cylinder 223; one side of the first support plate 222, which is far away from the vacuum cylinder 221, is further provided with a power assembly 24, the power assembly 24 is used for driving the mobile detection bed 1 to slide along the axis of the inner cylinder 223, the power assembly 24 comprises a spur rack 241, a power gear 242 and a power motor 243, the spur rack 241 is fixed on the lower side of the mobile detection bed 1 and arranged along the length direction of the mobile detection bed 1, one side of the first support plate 222, which is far away from the vacuum cylinder 221, is fixed with a support frame 2221, the power motor 243 is installed on the support frame 2221, the power gear 242 is installed on an output shaft of the power motor 243, the power gear 242 is in key connection with the output shaft of the power motor 243, the power motor 243 drives the power gear 242 to rotate, the power gear 242 drives.
Referring to fig. 6, 7 and 8, the movable examining bed 1 is further provided with at least one binding assembly 3, the binding assembly 3 is used for binding the patient on the movable examining bed 1, so that the patient is not easy to slide on the movable examining bed 1, the number of the binding assemblies 3 is preferably four, the binding assemblies 3 correspond to four limbs of the human body, the binding assemblies 3 include a sub-magic tape 31, a binding tape 32 and a main magic tape 33, the sub-magic tape 31 is fixed on one side of the upper side of the movable examining bed 1 far from the edge and is arranged along the length direction of the movable examining bed 1, the binding tape 32 is preferably made of elastic cloth, the binding tape 32 can be fixedly connected to the edges of the two sides of the movable examining bed 1 or can be connected to the edges of the two sides of the movable examining bed 1 in a sliding manner, the binding tape 32 is preferably connected to the edges of the two sides of the movable examining bed 1 in a sliding manner, so as to adjust the position of the binding, one end of the constraint belt 32 close to the sub-magic tape 31 is fixed with a female magic tape 33, and the female magic tape 33 is matched with the sub-magic tape 31, so that the four limbs of the patient are fixed on the movable detection bed 1 through the constraint belt 32.
Referring to fig. 9 and 10, the binding assembly 3 further includes a sliding block 34, sliding grooves 12 are formed in the side walls of the two side edges of the movable detection bed 1, the sliding grooves 12 are arranged along the length direction of the movable detection bed 1, one end of the binding belt 32, which is far away from the female magic tape 33, is fixedly connected with the sliding block 34, and the sliding block 34 is connected in the sliding grooves 12 in a sliding manner, so that the position of the binding belt 32 can be conveniently adjusted according to the height of a patient; the movable detection bed 1 is further integrally provided with a plurality of locking teeth 13 which are uniformly arranged along the length direction of the movable detection bed 1, the locking teeth 13 are arranged on the side wall opposite to the bottom of the sliding groove 12, the side wall of the sliding block 34 close to the binding belt 32 is integrally provided with a plurality of engaging teeth 341, when the binding belt 32 binds four limbs of a patient, the binding belt 32 is tensioned, and the engaging teeth 341 and the locking teeth 13 are engaged with each other to lock the sliding block 34 and the binding belt 32, so that the sliding block 34 is not easy to slide in the sliding groove 12; the compression spring 35 is further inserted into one side of the sliding block 34, which is far away from the binding belt 32, one end of the compression spring 35, which is far away from the sliding block 34, is abutted to the bottom of the sliding groove 12, when the position of the sliding block 34 needs to be adjusted, the position of the sliding block 34 can be adjusted only by separating the engaging teeth 341 from the locking teeth 13 when the sliding block 34 is pressed, after the position of the sliding block 34 is adjusted, the sliding block 34 is loosened, the sliding block 34 is reset under the driving of the compression spring 35, and the engaging teeth 341 are engaged with the locking teeth 13 to lock the sliding block 34.
The implementation principle of the embodiment is as follows:
the scanning device 22 is rotatably connected between the two supporting columns 21, and the angle of the scanning device 22 can be adjusted by the patient according to the part detected by the patient during detection, so that the lying posture of the patient can be adjusted, and the accuracy of the result during detection of the patient is improved; when the patient lies and moves and detects on the bed 1, accessible constraint area 32 fixes patient's four limbs, makes the patient be difficult for sliding on moving and detecting the bed 1, and constraint area 32 slides through sliding block 34 and connects on moving and detecting the bed 1 to the position of constraint area 32 is adjusted according to patient's height to the convenience, and after the position control of constraint area 32 was accomplished, accessible locking tooth 13 locked sliding block 34 with the meshing of meshing tooth 341.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. The utility model provides a rotatable formula does not have liquid helium superconducting magnetic resonance appearance, includes nuclear magnetic resonance scanning system (2) and slides and connect removal detection bed (1) on nuclear magnetic resonance scanning system (2), its characterized in that: the nuclear magnetic resonance scanning system (2) comprises two supporting columns (21), a scanning device (22) and a driving assembly (23), wherein the scanning device (22) is rotatably connected between the two supporting columns (21), and the driving assembly (23) drives the scanning device (22) to rotate;
the driving assembly (23) comprises a driving motor (231) which is fixed on one side of the supporting column (21) far away from the scanning device (22) and the output shaft of which is connected with the scanning device (22).
2. A rotatable liquid helium-free superconducting magnetic resonance instrument according to claim 1, wherein: be fixed with two axis of rotation (211) that are relative setting on scanning device (22)'s the lateral wall, axis of rotation (211) one-to-one wears to locate the upside of support column (21) and rotates with support column (21) and is connected, drive assembly (23) still include gear wheel (232) and the key-type on a axis of rotation (211) connect in the output shaft of driving motor (231) on and with pinion (233) of gear wheel (232) meshing, be close to still be equipped with locking cylinder (234) on support column (21) of driving motor (231), the piston rod of locking cylinder (234) sets up and runs through support column (21) towards gear wheel (232), be fixed with locking piece (235) with gear wheel (232) intermeshing on the piston rod of locking cylinder (234).
3. A rotatable liquid helium-free superconducting magnetic resonance instrument according to claim 1, wherein: the moving detection bed (1) is arranged in a hole of the scanning device (22) in a penetrating mode and connected with the scanning device (22) in a sliding mode, a pedal (11) is arranged at one end of the moving detection bed (1), and a power assembly (24) which drives the moving detection bed (1) to move along the axial direction of the scanning device (22) is further arranged in the hole of the scanning device (22).
4. A rotatable liquid helium-free superconducting magnetic resonance instrument according to claim 3, wherein: the power assembly (24) comprises a spur rack (241) arranged on the lower side of the movable detection bed (1), a power gear (242) which is rotatably connected to the scanning device (22) and is meshed with the spur rack (241), and a power motor (243) which is fixed to the scanning device (22) and has an output shaft connected with the power gear (242).
5. A rotatable liquid helium-free superconducting magnetic resonance instrument according to claim 3, wherein: still including at least one constraint subassembly (3) of locating removal detection bed (1) upside, constraint subassembly (3) are including locating removal detection bed (1) upside and along removing sub-magic subsides (31) that detection bed (1) length direction set up, at least two along removing that detection bed (1) length direction sets up and one end and removal detect tie (32) of being connected of bed (1) and locate the other end of tying up area (32) and with sub-magic subsides (31) complex female magic subsides (33).
6. A rotatable liquid helium-free superconducting magnetic resonance instrument according to claim 5, wherein: the constraint component (3) further comprises a sliding block (34) fixedly connected to one end of the constraint belt (32) close to the movable detection bed (1), and sliding grooves (12) for the sliding block (34) to be embedded and arranged to slide are formed in two sides of the movable detection bed (1).
7. A rotatable liquid helium-free superconducting magnetic resonance instrument according to claim 6, wherein: still be equipped with locking tooth (13) of a plurality of even settings on the removal detection bed (1), locking tooth (13) an organic whole is located on the lateral wall relative with sliding groove (12) tank bottom, an organic whole is equipped with meshing tooth (341) with locking tooth (13) intermeshing on sliding block (34), one side that meshing tooth (341) were kept away from in sliding block (34) is equipped with compression spring (35), the one end of compression spring (35) and sliding block (34) butt other end and the tank bottom butt of sliding groove (12).
8. A rotatable liquid helium-free superconducting magnetic resonance instrument according to claim 3, wherein: and a detection bed supporting table (14) is arranged on one side of the scanning device (22).
9. A rotatable liquid helium-free superconducting magnetic resonance instrument according to claim 1, wherein: the scanning device (22) comprises a vacuum cylinder (221), a first supporting plate (222) arranged at one end of an opening of the vacuum cylinder (221), an inner cylinder (223) fixed to one side, close to the vacuum cylinder (221), of the first supporting plate (222) and concentrically arranged with the vacuum cylinder (221), a first supporting cylinder (224) sleeved on the inner cylinder (223) and fixed to the first supporting plate (222), a cold screen upper end plate (225) fixed to one end, far away from the first supporting plate (222), of the first supporting cylinder (224), a cold screen cylinder (226) penetrating through the first supporting cylinder (224) and fixed to the cold screen upper end plate (225), a cold screen lower end plate (227) fixed to one end, far away from one end of the cold screen upper end plate (225), of a second supporting cylinder (228) embedded in the cold screen cylinder (226) and fixed to one end of the cold screen upper end plate (225), and a second supporting plate (229) fixed to the other end of the second supporting cylinder (228), A superconducting magnet (2291) sleeved on the inner cylinder (223) and a refrigerator (2292) fixed on the vacuum cylinder (221) and connected with the cavity of the cold shield cylinder (226);
vacuum cylinder (221) and first backup pad (222), the equal sealing connection of inner tube (223), first backup pad (224) and cold screen upper end plate (225), first backup pad (222), the equal sealing connection of inner tube (223), cold screen section of thick bamboo (226) and cold screen upper end plate (225), cold screen lower end plate (227), the equal sealing connection of inner tube (223), second backup pad (228) and second backup pad (229), cold screen upper end plate (225), the equal sealing connection of inner tube (223).
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| EP4212898A1 (en) * | 2022-01-17 | 2023-07-19 | ETH Zurich | Magnetic resonance device comprising a sample spinning apparatus with an electromagnetic field for spinning the sample |
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