CN116115213A

CN116115213A - Vehicle-mounted brain magnetic resonance imaging system with ultralow field special for cerebral apoplexy

Info

Publication number: CN116115213A
Application number: CN202211382719.7A
Authority: CN
Inventors: 黎小文; 黎竞华; 温圣倍; 周立健; 杜高伦; 程正坤
Original assignee: Shenzhen Beibeiwang Medical Equipment Co ltd
Current assignee: Shenzhen Beibeiwang Medical Equipment Co ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2023-05-16

Abstract

The invention discloses a vehicle-mounted cerebral apoplexy special-purpose ultralow-field craniocerebral magnetic resonance imaging system, which relates to the field of medical magnetic resonance imaging and comprises a carriage body, wherein a stretcher is arranged in the carriage body, the bottom end of the stretcher is connected with a wheel body, one end in the carriage body is provided with a magnetic resonance magnet unit, a device cabinet is arranged above the magnetic resonance magnet unit, the bottom end in the carriage body is provided with two sliding grooves with the same distance as the wheel body, the two sliding grooves are parallel to each other, and a locking structure for the wheel body is arranged in the carriage body in a sliding manner. According to the invention, the special ultralow-field craniocerebral magnetic resonance imaging system is used for directly going to the residence of a patient to perform stroke diagnosis, so that precious time is striven for the treatment of acute cerebral stroke, and the clamping structure for clamping the wheels of the stretcher is designed in the ambulance, so that the head of the patient can enter the magnetic resonance magnet unit more stably and accurately in the process of continuously pushing forward.

Description

Vehicle-mounted brain magnetic resonance imaging system with ultralow field special for cerebral apoplexy

Technical Field

The invention relates to the field of magnetic resonance imaging, in particular to a vehicle-mounted cerebral apoplexy special-purpose ultralow-field cranium brain magnetic resonance imaging system.

Background

The cerebral apoplexy is commonly called as apoplexy, is the first cause of disability caused by death of adult people in China, and has the characteristics of high morbidity, high recurrence rate, high mortality rate, high disability rate and the like.

Cerebral stroke includes ischemic cerebral stroke (cerebral infarction) and hemorrhagic cerebral stroke (cerebral hemorrhage). Ischemic stroke accounts for about 80% of all strokes. The treatment of acute cerebral apoplexy has extremely strong time dependence, for example, the treatment of ischemic stroke is critical in that active intravenous thrombolytic treatment is carried out within 3.0-4.5 hours of onset, and the recanalization of infarcted blood vessels is realized. So 4.5 hours is also known as the golden time window for stroke relief.

The main difficulty in achieving early thrombolysis is the elimination of hemorrhagic stroke, because intravenous thrombolytic therapy once misused in patients with hemorrhagic stroke may cause further development of hematoma, worsening the patient's condition. However, the two kinds of early symptoms of the apoplexy are similar in sign, and the early apoplexy type is clinically diagnosed by mainly utilizing multi-mode craniography means (CT flat scan, CTA, CTP and the like) to exclude the hemorrhagic apoplexy so as to realize early risk-free thrombolysis.

However, the existing imaging devices and ray protection devices are heavy and have poor mobility, and are often configured in hospitals. At present, only vehicle-mounted CT vehicles are used for pre-hospital diagnosis of cerebral apoplexy, the size and the weight are large, and the patients are difficult to drive into residential areas, so that the popularization and the application are difficult. And the time spent after patient delivery to hospital may result in acute stroke patients missing the thrombolytic time window.

After a patient is lifted on the vehicle, the vehicle-mounted stretcher is mostly guided by two groups of mutually parallel track structures, so that the vehicle-mounted stretcher can slide in a preset direction, the head of the patient can be kept in the center of magnetic resonance equipment and enter the magnetic resonance equipment, so that imaging quality is improved, the wheels of the stretcher can well slide into the tracks because the inner wall of the existing track structure needs to keep a certain gap with the wheels, and in the running process of the ambulance, the stretcher is easy to shake in the direction orthogonal to the sliding direction due to the existence of the gaps, and serious shaking is easy to cause secondary injury to the patient.

In summary, the existing ambulance for patients with cerebral apoplexy cannot grasp the optimal rescue time, and is not easy to perform a stable examination in the process of transferring patients.

Disclosure of Invention

Based on the above, the invention aims to provide a vehicle-mounted cerebral apoplexy special-purpose ultralow-field craniocerebral magnetic resonance imaging system so as to solve the technical problems that the existing ambulance for cerebral apoplexy patients cannot grasp the optimal rescue time and is difficult to stably check in the process of transferring the patients.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a special ultralow field cranium brain magnetic resonance imaging system of on-vehicle cerebral apoplexy, includes the carriage body, be provided with the stretcher in the carriage body, the bottom of stretcher is connected with the wheel body, the internal one end of carriage is provided with the magnetic resonance magnet unit, the equipment cabinet is installed to the top of magnetic resonance magnet unit, the equipment cabinet passes through the signal line and connects the communication cabinet that sets up at the carriage body outer wall, the internal bottom of carriage is provided with two spouts equal with wheel body interval, two the spout is parallel to each other, and inside all slides and be provided with the locking structure to the wheel body, be provided with on-vehicle magnetic resonance magnet, gradient coil, transmitting coil, receiving coil in the magnetic resonance magnet unit, including the control unit to on-vehicle magnetic resonance magnet, gradient coil, transmitting coil, receiving coil in the equipment cabinet, including 5GCPE, 5G switch in the communication cabinet's effect is the remote transmission that realizes magnetic resonance equipment scanning image, vital sign to and hospital doctor's remote consultation guide.

Through adopting above-mentioned technical scheme, special ultralow field craniocerebral magnetic resonance imaging system can directly open the residence department of community patient and carry out the diagnosis of apoplexy, can effectively reduce patient's handling time, can discern patient's intracranial hemorrhage or infarct fast accurately, strive for valuable time for the treatment of acute cerebral apoplexy, design the joint structure of joint stretcher wheel in the ambulance, set up the joint structure in the slip track, the joint structure is the wheel of automatic locking stretcher after the wheel slip of stretcher reaches the assigned position, make it can make patient's head more steady and accurate entering magnetic resonance equipment in the in-process of continuing to promote.

The invention is further arranged that the bottom surface in the carriage body is provided with the guide tables with Y-shaped structures at one ends of the two sliding grooves.

Through adopting above-mentioned technical scheme, make the stretcher can more convenient slide in predetermined track, can strive for a large amount of time when rescuing the patient.

The invention is further characterized in that two fixing tables are arranged in the sliding grooves in a sliding mode, a fixing plate with a V-shaped structure is connected above one end of each fixing table in a rotating mode, a lock tongue structure is arranged on one side of each fixing table, and a clamping tongue matched with the lock tongue structure is arranged on one side of each fixing plate.

Through adopting above-mentioned technical scheme for the wheel body receives inertia after rolling into the fixed plate and continues the motion, can make spring bolt structure and block tongue cooperation simultaneously, locks the fixed plate.

The invention is further arranged that both sides of the fixing plate are provided with the barrier strip structures which incline outwards.

Through adopting above-mentioned technical scheme, the blend stop structure can prevent that the wheel body from transversely moving in the fixed plate.

The invention further provides that an inclined bearing table is arranged on one side, close to the guide table, of the sliding groove.

Through adopting above-mentioned technical scheme, the plummer is used for bearing the fixed plate after the slope, the next use of locking structure of being convenient for.

The invention further provides that when the clamping tongue is matched with the spring bolt structure, the height of the axis of the wheel body on the fixed plate is the same as that of the axis of the wheel body on the inner bottom surface of the carriage body, an unlocking structure which is matched with the clamping tongue and the spring bolt structure is arranged in the fixed table, the fixed table touches the unlocking structure when sliding to the limit position towards the guide table, the clamping tongue is matched with the spring bolt structure to unlock, and the fixed plate is contacted with one end of the guide table after rotating and is contacted with the top surface of the bearing table.

By adopting the technical scheme, the wheel body of the stretcher is locked by the locking structure in the chute, so that the sliding process is more stable, and the inclination is not easy to occur.

The invention is further arranged that the front end of the stretcher is provided with the telescopic head support.

By adopting the technical scheme, the magnetic scanning device is used for extending the head of a patient and facilitating the access to the magnetic scanning area.

The invention further provides that six sides of the carriage body are paved by non-magnetic metal partitions.

By adopting the technical scheme, the non-magnetic conductive metal is used for shielding external electromagnetic interference, so that the magnetic resonance equipment in the magnetic resonance magnet unit can better perform magnetic resonance examination on a patient.

The invention further provides that a plurality of groups of high-definition cameras are arranged at positions, facing the stretcher vehicle, in the carriage body.

By adopting the technical scheme, the real-time condition of the patient is reflected to the hospital by the cooperation of the plurality of groups of high-definition cameras and the communication equipment in the equipment cabinet, so that the hospital can be quickly prepared.

The invention further provides that the stretcher is made of non-magnetic materials, and the connecting pieces on the stretcher body are all made of the non-magnetic materials.

By adopting the technical scheme, the influence on the imaging quality of the magnetic resonance equipment when the stretcher stretches into the magnetic resonance equipment is avoided.

In summary, the invention has the following advantages:

1. the invention can directly open the residence of the community patient to diagnose the cerebral apoplexy through the special ultra-low field craniocerebral magnetic resonance imaging system, can effectively reduce the carrying time of the patient, can rapidly and accurately identify whether the patient is intracranial hemorrhage or infarction, and strives for precious time for the treatment of acute cerebral apoplexy;

2. according to the invention, the clamping structure for clamping the wheels of the stretcher is designed in the ambulance, and is arranged in the sliding track, and the clamping structure automatically locks the wheels of the stretcher after the wheels of the stretcher slide to the designated positions, so that the head of a patient can enter the magnetic resonance equipment more stably and accurately in the process of continuously pushing the stretcher forwards, and meanwhile, the shaking of the stretcher can be reduced in the process of transferring the patient, so that the injury of shaking to the patient is reduced;

3. according to the invention, the sliding groove structure embedded on the ground of the carriage body is arranged, and the limit structure for the wheels is arranged in the sliding groove structure in a sliding way, so that the ground in the carriage is smoother, and compared with the traditional stretcher guiding rail, the flatness of the ground in the carriage is greatly improved on the premise of ensuring stable guiding of the stretcher, the sliding movement of other auxiliary treatment equipment of the carriage is facilitated, and meanwhile, the walking of personnel in the carriage is also facilitated;

4. according to the invention, by arranging cerebral apoplexy examination equipment and communication equipment connected with a hospital in a rescue vehicle, a treatment mode that a patient with a cerebral apoplexy is sent to a hospital first and then examined and thrombolysis is carried out is broken, a cerebral apoplexy emergency treatment step is advanced to the front of the hospital by utilizing a vehicle-mounted cerebral magnetic resonance imaging system with a special ultra-low field, scanning diagnosis can be carried out in time before the patient arrives at the hospital, emergency treatment is taken in time, and the golden time for treatment is won;

5. according to the invention, by adopting the remote consultation system, the doctor in the hospital can synchronize the patient information in real time through the voice video remote consultation guidance, so that the preparation for the operation of the patient is performed in advance.

Drawings

FIG. 1 is a top perspective view of the present invention;

FIG. 2 is a rear perspective view of the present invention;

FIG. 3 is a perspective view of a fixing structure of the present invention;

FIG. 4 is an enlarged view of FIG. 3A in accordance with the present invention;

FIG. 5 is a perspective view showing a fixing state of the fixing structure of the present invention;

FIG. 6 is an enlarged view of B of FIG. 5 in accordance with the present invention;

FIG. 7 is a perspective view showing a fixed state of a fixed table according to the present invention;

FIG. 8 is a front interior view of a fixture table of the present invention;

FIG. 9 is an elevation view of the invention in an unlocked position of the fixture;

FIG. 10 is a diagram of an imaging information delivery system of the present invention;

fig. 11 is a front interior view of the chute end locking structure of the present invention.

In the figure: 1. a cabin body; 2. stretcher vehicle; 3. a magnetic resonance magnet unit; 4. an equipment cabinet; 5. a communication cabinet; 6. a bottom plate; 7. a chute; 8. a wheel body; 9. a guide table; 10. a guide bar; 11. a fixed table; 12. a fixed box; 13. a fixing plate; 14. a clamping tongue; 15. a telescoping tongue; 16. a telescopic box; 17. unlocking the platform; 18. a carrying platform; 19. a pedal switch; 20. lever lock tongue; 21. a bayonet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Hereinafter, an embodiment of the present invention will be described in accordance with its entire structure.

Embodiment one:

the utility model provides a special ultralow field cranium brain magnetic resonance imaging system of on-vehicle cerebral apoplexy, as shown in fig. 1-10, including carriage body 1, be provided with stretcher 2 in the carriage body 1, the bottom of stretcher 2 is connected with wheel body 8, one end in the carriage body 1 is provided with magnetic resonance magnet unit 3, equipment cabinet 4 is installed to the top of magnetic resonance magnet unit 3, equipment cabinet 4 passes through signal line connection and sets up the communication cabinet 5 at carriage body 1 outer wall, the bottom in the carriage body 1 is provided with bottom plate 6, be provided with two spouts 7 equal with wheel body 8 interval on the bottom plate 6, two spouts 7 are parallel to each other, and inside all slide and be provided with the locking structure to wheel body 8, be provided with on-vehicle magnetic resonance magnet in the magnetic resonance magnet unit 3, gradient coil, transmitting coil, receiving coil, including the control unit to on-vehicle magnetic resonance magnet in the equipment cabinet 4, gradient coil, transmitting coil, receiving coil's doctor's control unit, including 5GCPE in the communication cabinet 5G switch, the effect of communication cabinet 5 is realized that magnetic resonance equipment scans the image, the remote transmission of vital sign, and the long-range consultation of hospital.

The system comprises a scanning patient image of a vehicle-mounted cerebral apoplexy special-purpose ultra-low field craniocerebral magnetic resonance imaging system, a real-time image of a high-definition camera, dynamic physiological parameters of patients of other auxiliary medical equipment, wherein the dynamic physiological parameters are transmitted to 5G CPE through a 5G switch, the 5G CPE is wirelessly connected with a base station, the base station is connected with a wide area network, a hospital network is connected with the wide area network, and a doctor computer acquires the dynamic physiological parameters and the scanning image of the patients and the expression condition of the patients through the hospital network. The in-hospital summoning expert doctor and the following doctor carry out video voice dialogue to share illness state information and remotely guide, and meanwhile, the medical device can also be prepared for the operation of the patient after the patient is admitted.

On the basis of the above structure, in this embodiment, the bottom surface in the carriage body 1 is provided with the guide tables 9 with Y-shaped structures at one ends of the two sliding grooves 7, so that the stretcher vehicle 2 can slide into the predetermined track more conveniently, and a great amount of time can be striven for when rescuing patients.

On the basis of the above structure, in this embodiment, the fixing tables 11 are slidably disposed in the two sliding grooves 7, the guiding strips 10 for guiding the fixing tables 11 are further disposed in the sliding grooves 7, so that the sliding of the fixing tables 11 is more stable, the fixing plate 13 with a V-shaped structure is rotatably connected above one end of the fixing table 11, the locking tongue structure is disposed on one side of the fixing table 11, and the locking tongue 14 matched with the locking tongue structure is disposed on one side of the fixing plate 13, so that the wheel body 8 is allowed to move continuously by inertia after rolling into the fixing plate 13, and meanwhile, the locking tongue structure is matched with the locking tongue 14 to lock the fixing plate 13.

Wherein both sides of the fixed plate 13 are provided with outwardly inclined barrier rib structures, which can prevent the wheel body 8 from moving laterally in the fixed plate 13.

Based on the above structure, in this embodiment, an inclined carrying platform 18 is disposed on the side of the chute 7 close to the guiding platform 9, and the carrying platform 18 is used for carrying the inclined fixing plate 13, so as to facilitate the next use of the locking structure.

The spring bolt structure matched with the clamping tongue 14 is specifically a telescopic tongue 15, the telescopic tongue 15 is movably connected in a telescopic box 16, the telescopic box 16 is movably connected in a fixed box 12, the fixed box 12 is arranged on a fixed table 11 and is of a hollow structure, an unlocking table 17 which is of a T-shaped structure is slidably connected with a hollow part in the fixed table 11 and the fixed box 12, a spring is arranged between one end of the unlocking table 17 and the inner wall of the fixed table 11, the other end of the unlocking table extends out of the fixed table 11, when the fixed table 11 slides to one end in a sliding groove 7, the part of the unlocking table 17 extending out of the fixed table 11 collides with a bearing table 18, at the moment, the unlocking table 17 slides in the hollow part in the fixed table 11 and the fixed box 12 by self gravity, the telescopic tongue 15 slides downwards simultaneously, and simultaneously, when the unlocking table 17 is not contacted with the bearing table, the spring at the back of the unlocking table 17 pushes the unlocking table to reset, and the telescopic tongue 15 can be matched with the clamping tongue 14 to execute locking work.

In order to prevent external electromagnetic interference, six sides of the carriage body 1 are all paved by non-magnetic conductive metal partition, and the non-magnetic conductive metal is used for shielding the external electromagnetic interference, so that the magnetic resonance equipment in the magnetic resonance magnet unit 3 can better perform magnetic resonance examination on patients.

On the basis of the above structure, in this embodiment, when the latch 14 is matched with the latch structure, the height of the axis of the wheel body 8 on the fixing plate 13 is the same as that of the axis of the wheel body on the bottom surface of the carriage body 1, an unlocking structure for contacting the latch 14 with the latch structure is provided in the fixing table 11, the fixing table 11 touches the unlocking structure when sliding to the limit position towards the guiding table 9, the cooperation of the latch 14 with the latch structure is unlocked, the fixing plate 13 rotates and then contacts with one end of the guiding table 9, and simultaneously contacts with the top surface of the bearing table 18, so that the wheel body 8 of the stretcher 2 is more stable in the sliding process after being locked by the locking structure in the sliding groove 7, and the inclination is not easy to occur.

Based on the above structure, in this embodiment, the stretcher 2 is made of a non-magnetic conductive material, and the connecting pieces on the vehicle body are all made of a non-magnetic conductive material, so as to avoid affecting the imaging quality of the magnetic resonance device when the stretcher 2 stretches into the magnetic resonance device.

The embodiment also provides that the front end of the stretcher 2 is provided with a telescopic head support for extending the head of a patient, so that the patient can conveniently enter the magnet scanning area.

On the basis of the above structure, in this embodiment, a plurality of groups of high-definition cameras are installed at positions facing the stretcher vehicle 2 in the carriage body 1, and real-time conditions of patients are reflected to a hospital through the plurality of groups of high-definition cameras matched with communication equipment in the equipment cabinet 4 so as to facilitate quick preparation of the hospital.

When a patient is first-aid, the emergency ambulance receives an emergency call to arrive at the scene, the stretcher 2 is used for transferring the patient, the telescopic head support on the stretcher 2 is adjusted according to the height of the patient, the stretcher 2 is pushed to align the head of the patient to the magnet scanning center area for magnetic resonance scanning, a doctor in a hospital of a remote consultation system performs remote guidance diagnosis, or a doctor following the car performs on-site diagnosis, after the disease is confirmed, corresponding treatment means are timely adopted, the remote consultation system transmits vital sign information of the patient in real time in the transferring process, and the doctor in the hospital can prepare to connect with a treatment scheme in advance.

Embodiment two:

as shown in fig. 11, this embodiment is different from the first embodiment in that, further, a fixing structure for the fixing table 11 is disposed at the end of the chute 7.

On the basis of the above structure, in this embodiment, specifically, the end of the chute 7 slides up and down and is provided with the pedal switch 19, the top of the pedal switch 19 extends upwards out of the bottom plate 6, the chute 7 is also provided with the lever lock tongue 20 at the sliding limit position of the fixed table 11, one end of the fixed table 11 facing the lever lock tongue 20 is provided with the bayonet 21, one end of the lever lock tongue 20 contacts with the bottom of the pedal switch 19, and the lower part contacting with the bottom of the pedal switch 19 is connected with the reset spring, the other end of the lever lock tongue 20 is provided with the clamping head matched with the bayonet 21, by setting the above structure, when the fixed table 11 slides to the end of the chute 7, the lever lock tongue 20 can lock the fixed table 11 to avoid the continuous sliding, and when the fixed table 11 needs to be unlocked, only the pedal switch 19 needs to be stepped on.

The invention creatively uses the vehicle-mounted magnetic resonance system, and simultaneously designs a track structure which stably enables the stretcher to extend into the vehicle-mounted magnetic resonance system, thereby avoiding the defects that the existing ambulance for patients suffering from cerebral apoplexy can not grasp the optimal rescue time and is not easy to stably check in the process of transferring the patients; in this scheme, can directly open community patient's residence through special-purpose ultralow field craniocerebral magnetic resonance imaging system and carry out the diagnosis of apoplexy, can effectively reduce patient's handling time, can discern patient's intracranial hemorrhage or infarct fast accurately, fight valuable time for the treatment of acute cerebral apoplexy, design the joint structure of joint stretcher wheel in the ambulance, set up the joint structure in the slip track, the joint structure is the wheel of stretcher after the wheel slip of stretcher reaches the assigned position automatic locking stretcher, make it can make patient's head more steady and accurate get into magnetic resonance equipment at the in-process of continuing forward promotion.

Although embodiments of the invention have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the invention as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the invention, provided that such modifications are within the scope of the appended claims.

Claims

1. The utility model provides a special ultralow field cranium brain magnetic resonance imaging system of on-vehicle cerebral apoplexy, includes carriage body (1), be provided with stretcher (2) in carriage body (1), the bottom of stretcher (2) is connected with wheel body (8), its characterized in that: the utility model discloses a magnetic resonance system, including carriage body (1), carriage body (1) are provided with one end in, be provided with magnetic resonance magnet unit (3) in carriage body (1), equipment cabinet (4) are installed to the top of magnetic resonance magnet unit (3), equipment cabinet (4) pass through signal line connection and set up communication cabinet (5) at carriage body (1) outer wall, the bottom in carriage body (1) is provided with two spout (7) that equal with wheel body (8) interval, two spout (7) are parallel to each other, and inside all slide and be provided with the locking structure to wheel body (8), be provided with on-vehicle magnetic resonance magnet, gradient coil, transmitting coil, receiving coil in magnetic resonance magnet unit (3), including the control unit to on-vehicle magnetic resonance magnet, gradient coil, transmitting coil, receiving coil in equipment cabinet (4), including 5GCPE, 5G switch in communication cabinet (5) effect is the remote transmission that realizes magnetic resonance equipment scanning image, vital sign to the doctor's long-range consultation to the hospital.

2. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 1, wherein: the bottom surface in carriage body (1) is provided with guide table (9) that is Y shape structure in two one ends of spout (7).

3. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 1, wherein: the two sliding grooves (7) are internally provided with fixing tables (11) in a sliding manner, a fixing plate (13) with a V-shaped structure is connected above one end of each fixing table (11) in a rotating manner, a lock tongue structure is arranged on one side of each fixing table (11), and a clamping tongue (14) matched with the lock tongue structure is arranged on one side of each fixing plate (13).

4. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 3, wherein: both sides of the fixed plate (13) are provided with baffle bar structures which incline outwards.

5. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 1, wherein: an inclined bearing table (18) is arranged on one side, close to the guide table (9), of the sliding groove (7).

6. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 3, wherein: when the clamping tongue (14) is matched with the lock tongue structure, the height of the axis of the wheel body (8) on the fixed plate (13) is the same as that of the axis of the wheel body on the inner bottom surface of the carriage body (1), an unlocking structure which is matched with the contact clamping tongue (14) and the lock tongue structure is arranged in the fixed table (11), the fixed table (11) touches the unlocking structure when sliding to the limit position towards the guide table (9), the matching of the clamping tongue (14) and the lock tongue structure is unlocked, and the fixed plate (13) contacts with one end of the guide table (9) after rotating and contacts with the top surface of the bearing table (18) at the same time.

7. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 1, wherein: the front end of the stretcher (2) is provided with a telescopic head support.

8. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 1, wherein: six sides of the carriage body (1) are paved by non-magnetic metal partitions.

9. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 1, wherein: a plurality of groups of high-definition cameras are arranged in the carriage body (1) towards the position of the stretcher (2).

10. The vehicular stroke dedicated ultralow field craniocerebral magnetic resonance imaging system of claim 1, wherein: the stretcher (2) is made of non-magnetic materials, and the connecting pieces on the stretcher body are all made of the non-magnetic materials.