Nuclear magnetic resonance detection device

Abstract

The invention discloses a nuclear magnetic resonance detection device, and belongs to the technical field of nuclear magnetic resonance detection equipment improvement, the nuclear magnetic resonance detection device comprises a nuclear magnetic resonance scanning machine body and a patient bed, a bed frame is slidably arranged on a bed base, airflow channel assemblies are arranged in two sides of the bed frame, and two blowing and sucking control assemblies are arranged on two sides of the bed base; the two blowing and sucking control assemblies are connected with the two airflow runner assemblies respectively, each airflow runner assembly comprises a high-speed runner and a low-speed runner which are arranged in parallel, runner openings of the high-speed runners and the low-speed runners are attached to the inner wall of the detection cavity, and the high-speed runners are closer to the detection cavity than the low-speed runners. The high-speed flow channel and the low-speed flow channel are communicated with one ends of air uniformizing cavities respectively, the other ends of the two air uniformizing cavities are communicated with one end of an airflow conveying pipeline respectively, the blowing and sucking control assembly comprises a blowing and sucking pump, and the other end of the airflow conveying pipeline is communicated with the blowing and sucking pump. According to the breathing mask, viruses carried by a patient during breathing can be removed, and cross infection and spreading of infectious diseases caused in the subsequent using process are avoided.

Description

Technical Field

[0001] The invention relates to a nuclear magnetic resonance detection device, belonging to the technical field of nuclear magnetic resonance detection equipment improvement. Background Art

[0002] Magnetic resonance imaging, also known as nuclear magnetic resonance testing, is another major advancement in medical imaging after CT. Its basic principle is to place the human body in a special magnetic field and use radio frequency pulses to excite the hydrogen nuclei in the human body, causing the hydrogen nuclei to resonate and absorb energy. After the radio frequency pulses are stopped, the hydrogen nuclei emit radio signals at a specific frequency and release the absorbed energy, which is collected by the receiver outside the body and processed by an electronic computer to obtain an image. This is called nuclear magnetic resonance imaging.

[0003] The MRI detection equipment mainly consists of an MRI scanner body, a host control system and a patient bed. The host control system includes a computer and a console for processing scanning data and controlling the equipment. The MRI scanner body includes a magnet (which generates a strong magnetic field, usually a superconducting magnet to ensure high-resolution imaging), a gradient coil (which generates a changing gradient in the magnetic field, used for spatial encoding of positioning and imaging), a radio frequency coil (used to transmit radio frequency pulses and receive reflected signals, divided into body coils and local coils) and a cooling system (which keeps the superconducting magnet working at low temperatures, usually using liquid helium). A circular detection cavity is formed in the middle of the MRI scanner body, which is the scanning area of ​​the equipment. The patient bed is mainly used to support the patient, and by controlling the movement of the patient bed, the part of the patient that needs to be scanned is placed in the scanning area for scanning.

[0004] Due to the large size of the MRI detection equipment, in order to make full use of the space, the scanning area in the MRI scanner is relatively limited, usually large enough for patients of normal size to enter. Because a strong magnetic field is formed when the equipment is turned on, there must be no ferromagnetic objects or other metal objects in the scanning area and near the body to avoid accidents caused by the magnetic field. At the same time, there must be no other structures in the scanning area that block the human body to avoid affecting the detection effect. Therefore, the scanning space in the MRI scanner is relatively empty and there is no redundant equipment.

[0005] Sometimes patients need to undergo a full-body examination, so the patient moves deeper into the testing cavity as the patient bed moves, while the scanning space is generally long and narrow with poor internal air flow. During the peak period of infectious diseases, if the patient carries the virus but the patient's doctor does not know it, or the patient's doctor already knows it but an MRI test must be performed, when the patient goes deeper into the testing cavity for testing, the virus carried by the exhaled gas will float in the testing cavity. Although most of the air can be taken out when the patient follows the patient bed out of the testing cavity, forming air flow and taking out most of the virus, in the actual testing process, some viruses will float near the inner wall of the testing cavity, and even temporarily attach to the inner wall of the testing cavity with the aerosol. When the patient bed moves out, the airflow near the inner wall of the scanning space is poor, which will cause some viruses to remain in the testing cavity.

[0006] After the patient has finished using the device, the virus will remain in the detection chamber. Even if the MRI scanner is turned off after use, the strong static magnetic field generated by its superconducting magnet still exists even if the device is not running. In order to protect the body well, it is not convenient for medical staff to enter the detection chamber. Therefore, the virus carried by the previous patient when exhaling is likely to remain in the detection chamber, which is easy to cause cross-infection during subsequent use, bringing greater disease risks to patients and increasing the spread of infectious diseases. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a nuclear magnetic resonance detection device that can remove viruses carried by patients when they exhale, thereby avoiding cross infection and the spread of infectious diseases during subsequent use.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] A nuclear magnetic resonance detection device comprises a nuclear magnetic resonance scanning body and a patient bed, the nuclear magnetic resonance scanning body comprises a detection chamber, the patient bed comprises a bed base and a bed frame, the bed frame is slidably arranged on the bed base, both sides of the bed frame are equipped with air flow channel components, two groups of blowing and suction control components are arranged on both sides of the bed base, the two groups of blowing and suction control components are respectively connected to the two groups of air flow channel components, the air flow channel components comprise a high-speed flow channel and a low-speed flow channel arranged in parallel, the flow channel openings of the high-speed flow channel and the low-speed flow channel are arranged in contact with the inner wall of the detection chamber, and the high-speed flow channel is closer to the detection chamber than the low-speed flow channel, the high-speed flow channel and the low-speed flow channel are respectively connected to one end of an air balancing cavity, the other ends of the two air balancing cavities are respectively connected to one end of an air flow delivery pipeline, the blowing and suction control component comprises a blowing and suction pump, and the other end of the air flow delivery pipeline is connected to the blowing and suction pump.

[0010] The high-speed flow channel and the low-speed flow channel have the same cross-sectional size as the gas-equalizing cavity connecting channel. The high-speed flow channel is configured as a contracting channel, and the low-speed flow channel is configured as an expanding channel. The flow channel openings of the high-speed flow channel and the low-speed flow channel are both configured as arc-shaped channels coaxial with the detection cavity.

[0011] The blowing and suction control component comprises a disinfection chamber, which is arranged on a connecting passage between the airflow conveying pipeline and the blowing and suction pump, and an air disinfection structure is arranged inside the disinfection chamber.

[0012] The airflow channel assembly is arranged along the length direction of the bed frame, and a shielding structure for covering the airflow channel assembly is installed on the bed base, and the shielding structure is slidably matched with the channel opening of the airflow channel assembly.

[0013] A guide plate is rotatably installed in the low-speed flow channel, and the guide plate is a flat and smooth structure. A rotating rod is connected to the guide plate, and the rotating rod is arranged along the length direction of the bed frame. A guide plate control assembly is arranged in the bed frame, and the guide plate control assembly includes a driving motor, and the driving motor is fixedly installed in the bed frame. A gear structure is arranged on the rotating rod, and a transmission gear is installed on the output shaft of the driving motor, and the transmission gear is meshed with the gear structure.

[0014] The rotating rod is a hollow structure, and seepage structures are embedded and installed on both sides of the guide plate. The blowing and suction control assembly also includes a drying assembly, and the drying assembly is fixedly installed in the seepage structure. The guide plate control assembly also includes a joint pipe, and the joint pipe is fixedly installed in the bed frame. The rotating rod is rotatably inserted into the joint pipe, and a sealing structure is provided between the rotating rod and the joint pipe. A seepage channel is provided between the seepage structure and the rotating rod, and a water pipe and a disinfectant pipe are connected to the joint pipe. The water pipe is connected to a liquid supply pump, and the disinfectant pipe is connected to the liquid supply pump.

[0015] Both sides of the guide plate are fixedly connected with elastic coatings, the elastic coatings are located outside the liquid seepage structure, and the elastic coatings are perpendicular to the outer wall of the guide plate when no external force is applied.

[0016] An inflatable ring storage cavity is provided at the end of the bed frame, an inflatable ring is installed inside the inflatable ring storage cavity, an inflatable pipeline is provided in the bed frame, the inflatable pipeline is connected to the inflatable ring, the inflatable pipeline is connected to an inflatable pump, the inflatable ring becomes a circular ring structure adapted to the inner wall of the detection cavity after being inflated, and a wiping structure is fixedly installed on the outer wall of the inflatable ring.

[0017] Flexible ring tubes are provided on both sides of the inflatable ring. The flexible ring tubes are of rubber structure. The flexible ring tubes are provided with multiple groups of air suction holes at positions corresponding to the inner wall of the detection cavity. The flexible ring tubes are connected to the air pump structure through pipelines.

[0018] A plurality of groups of moving wheels are installed at the bottom of the bed base, an armrest is arranged on the bed base, and a docking structure is arranged between the bed base and the nuclear magnetic resonance scanning machine body.

[0019] Beneficial effects of the present invention: The present invention provides a nuclear magnetic resonance detection device, both sides of the bed frame are equipped with air flow channel components, the air flow channel components include high-speed flow channels and low-speed flow channels arranged in parallel, the flow channel openings of the high-speed flow channels and the low-speed flow channels are arranged in contact with the inner wall of the detection cavity, one group of high-speed flow channels and the low-speed flow channels blow air outwards, and the other group of high-speed flow channels and the low-speed flow channels inhale air inwards, thereby forming a circular airflow shielding layer in the detection cavity, and the air exhaled by the patient can be carried away by the above-mentioned airflow in the process of approaching the detection cavity, and sucked away by the high-speed flow channel and the low-speed flow channel for inhalation, thereby greatly reducing the phenomenon of the virus approaching and attaching to the inner wall of the detection cavity, and can form an effective airflow exchange in the detection cavity while the device is detecting, thereby avoiding the spread of viruses in the air, improving the safety of the device, and reducing cross infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a state diagram of the present invention when an airflow shielding layer is formed in the detection cavity;

[0022] Figure 3 It is a schematic diagram of the overall structure of the airflow channel assembly of the present invention;

[0023] Figure 4 This is a state diagram of the bed frame of the present invention moving forward into the detection cavity;

[0024] Figure 5 For the present invention Figure 3 A magnified view of the structure of part A;

[0025] Figure 6 It is a schematic diagram of installing a flow guide structure in a low-pressure flow channel according to the present invention;

[0026] Figure 7 This is a diagram showing the guiding effect of the guide plate of the present invention on the airflow;

[0027] Figure 8 It is a schematic diagram of the overall structure of the guide plate control assembly of the present invention;

[0028] Fig. 9 This is a working state diagram of the guide plate of the present invention in a humidification state;

[0029] Fig.10 It is a schematic diagram of the working of the present invention in a non-humidification state;

[0030] Fig.11 It is a structural schematic diagram of the blowing and suction control assembly of the present invention;

[0031] Fig.12 This is a state diagram of the inflatable ring of the present invention after being inflated;

[0032] Fig.13 This is a state diagram of the inflatable ring wiping the inner wall of the detection cavity when the bed frame of the present invention exits the detection space;

[0033] Fig.14 For the present invention Fig.13 A magnified view of the structure of part B;

[0034] Fig.15 This is a schematic diagram of the structure of the improved inflation ring of the present invention;

[0035] The accompanying drawings are marked as follows: 1-MRI scanner body; 11-detection chamber; 2-patient bed; 21-bed base; 22-bed frame; 23-moving wheels; 24-shielding structure; 25-inflatable ring storage chamber; 3-air flow channel assembly; 31-high-speed flow channel; 32-low-speed flow channel; 33-air flow delivery pipeline; 34-even air cavity; 4-blowing and suction control assembly; 41-blowing and suction pump; 42-disinfection chamber; 421-air disinfection structure; 43-drying assembly; 5-guide plate; 51-rotating rod; 52-infiltration structure; 53-infiltration channel; 54-elastic coating; 6-driving motor; 7-connector pipe; 71-water pipe; 72-disinfectant pipe; 8-inflatable ring; 81-wiping structure; 82-inflatable pipeline; 83-flexible ring pipe; 84-inhalation hole. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the protection scope of the present invention.

[0037] Example 1

[0038] The nuclear magnetic resonance detection device in the prior art mainly consists of a nuclear magnetic resonance scanning body 1, a host control system and a patient bed 2. The patient bed 2 includes a bed base 21 and a bed frame 22. The bed frame 22 is used to support the patient. The bed frame 22 is slidably set on the bed base 21. When in use, the bed frame 22 is aligned with the detection cavity 11, and the patient's part to be scanned and detected is sent into the detection cavity 11 for scanning and monitoring by controlling the movement of the bed frame 22. The above-mentioned schemes related to nuclear magnetic resonance detection are all common technologies of existing nuclear magnetic resonance detection equipment, and their detailed technologies and existing equipment have been disclosed, so this embodiment will not be explained in detail.

[0039] The improvement of this embodiment is: Figure 1 and Figure 2 As shown, both sides of the bed frame 22 are provided with airflow channel components 3, the airflow channel components 3 are built into the bed frame 22, and two sets of blowing and suction control components 4 are provided on the bed base 21, and the two sets of blowing and suction control components 4 are respectively connected to the two sets of airflow channel components 3 to realize the separate control of the two sets of airflow channel components 3. For details, refer to Figure 3 and Figure 5 The airflow channel assembly 3 includes a high-speed channel 31 and a low-speed channel 32. The high-speed channel 31 and the low-speed channel 32 are both arranged corresponding to the inner wall of the detection chamber 11, and the high-speed channel 31 is arranged close to the inner wall of the detection chamber 11. An air-distributing cavity 34 is also arranged at a position corresponding to the airflow channel assembly 3 inside the bed frame 22. The air-distributing cavity 34 is connected to the high-speed channel 31 and the low-speed channel 32. The blowing and suction control assembly 4 includes a blowing and suction pump 41. The blowing and suction pump 41 is fixedly mounted on the bed frame 21 and does not move with the bed frame 22. The blowing and suction pump 41 is connected to the air-distributing cavity 34 through an airflow delivery pipeline 33, and can control the blowing or suction of the high-speed channel 31 and the low-speed channel 32 through the blowing and suction pump 41. When the high-speed channel 31 and the low-speed channel 32 are blowing, the output gas flow rate of the high-speed channel 31 is greater than the output gas flow rate of the low-speed channel 32.

[0040] During operation, one group of air flow channel components 3 blows air outwards under the action of the blowing and suction pump 41, and the air flow blows toward the inner wall of the detection cavity 11, while the other group of air flow channel components 3 inhales air under the action of the blowing and suction pump 41, and sucks the air near the inner wall of the detection cavity 11 inward. The blowing and inhaling of the two groups of air flow channel components 3 are not fixed and can be exchanged regularly. Among them, the high-speed flow channel 31 and the low-speed flow channel 32 have the same channel cross-sectional size when docking with the uniform air cavity 34, that is, the output air pressure and flow rate of the uniform air cavity 34 to the high-speed flow channel 31 and the low-speed flow channel 32 are basically the same, and the high-speed flow channel 31 is set as a shrinking channel, and the low-speed flow channel 32 is set as an expanding channel, and the channel openings of the high-speed flow channel 31 and the low-speed flow channel 32 are both set as arc-shaped channels coaxial with the detection cavity 11.

[0041] In actual use, when the patient follows the bed frame 22 into the detection chamber 11, refer to Figure 3, one group of high-speed flow channels 31 and low-speed flow channels 32 blow air outwards, and the other group of high-speed flow channels 31 and low-speed flow channels 32 inhale air inwards, thereby forming a circular airflow shielding layer in the detection chamber 11. The air exhaled by the patient can be taken away by the above-mentioned airflow in the process of approaching the detection chamber 11, and sucked away by the high-speed flow channels 31 and low-speed flow channels 32 for inhalation, thereby greatly reducing the phenomenon of the virus approaching and attaching to the inner wall of the detection chamber 11. Among them, since the channel opening of the high-speed flow channel 31 is relatively flat and the internal pressure is relatively large, the airflow velocity blown out during blowing is relatively fast, so a strong airflow layer can be formed near the inner wall of the detection chamber 11, which acts as a For protection, the virus can be effectively prevented from approaching the inner wall of the detection chamber 11. Even if part of the virus contacts the inner wall of the detection chamber 11, it can be moved away under the drive of the high-speed airflow, and the flow channel opening of the low-speed flow channel 32 is set to be expanded. When the airflow is output, an airflow with a relatively low flow rate and a large radiation range can be formed. Therefore, while the device is detecting, effective airflow exchange can be formed in the detection chamber 11 to avoid the spread of viruses in the air, improve the safety of the device, and reduce cross infection. Among them, the main function of the above-mentioned airflow is to interfere with and drive the floating of the virus. Therefore, as long as a roughly circular airflow can be formed, there is no precision requirement for the specific range of the airflow.

[0042] Sufficient storage space is provided in the bed base 21 and the bed frame 22 so that the airflow delivery pipeline 33 can be smoothly dragged when the bed frame 22 moves. Therefore, the above-mentioned arrangement will not affect the actual detection of the nuclear magnetic resonance scanning body 1, and can ensure the normal detection of the equipment. As for the flow rate control of the output airflow of the high-speed flow channel 31 and the low-speed flow channel 32, in addition to using the shrinking and expanding technology to control, the high-speed flow channel 31 and the airflow delivery pipeline 33 can also be separately connected to the corresponding blowing and suction pump 41 structure to form independent control, thereby making it more convenient to control the output airflow rate of the high-speed flow channel 31 and the low-speed flow channel 32.

[0043] In the present invention, one group of high-speed flow channels and low-speed flow channels blow air outwards, and another group of high-speed flow channels and low-speed flow channels inhale air inwards, thereby forming a circular airflow shielding layer in the detection cavity. The air exhaled by the patient can be carried away by the above-mentioned airflow in the process of approaching the detection cavity, and is sucked away by the high-speed flow channels and low-speed flow channels for inhalation, thereby greatly reducing the phenomenon of viruses approaching and attaching to the inner wall of the detection cavity, and can form effective airflow exchange in the detection cavity while the device is detecting, thereby avoiding the spread of viruses in the air, improving the safety of the device, and reducing cross infection.

[0044] Example 2

[0045] This embodiment is further improved on the basis of embodiment 1. Furthermore, the blowing and suction control component 4 also includes a disinfection chamber 42, which is arranged on the connection channel between the airflow conveying pipeline 33 and the blowing and suction pump 41, and an air disinfection structure 421 (such as an ultraviolet disinfection lamp) is arranged inside the disinfection chamber 42. Whether it is the air inhaled from the detection cavity 11 or the air output to the detection cavity 11, it passes through the corresponding disinfection chamber 42 and is disinfected by the air disinfection structure 421 to ensure the overall environmental safety of the detection chamber. In order to form a full range of airflow shielding layer after the bed frame 22 enters the detection cavity 11, the airflow channel component 3 can be arranged along the length direction of the bed frame 22, and a shielding structure 24 for covering the airflow channel component 3 is fixedly installed on the bed base 21. Only when the airflow channel component 3 enters the detection cavity 11 part and is separated from the shielding of the shielding structure 24, can the suction and blowing operations be performed, thereby reducing the impact on the air outside the detection cavity 11.

[0046] In the above embodiment, since the MRI scanning machine 1 is large and inconvenient to move, and some patients have no mobility, they need medical staff to help them or even move them to the bed frame 22. However, the MRI examination room in some hospitals has a small indoor space, and for safety protection, it is not suitable for multiple people to be in it at the same time. Therefore, this embodiment also provides the following technical solutions, referring to Figure 1 and Figure 4 A plurality of groups of moving wheels 23 are installed at the bottom of the bed base 21, and an armrest is arranged on the bed base 21. A docking structure is arranged between the bed base 21 and the MRI scanner body 1, so that the bed base 21 can be easily moved. After the patient is transferred to the bed frame 22 from other places, the bed base 21 can be directly pushed into the MRI testing room and docked with the MRI scanner body 1, thereby reducing the number of people staying in the MRI testing room and making the detection more convenient and safe.

[0047] Furthermore, in the above scheme, the output airflow of the bed base 21 and the low-speed flow channel 32 during blowing is a stable airflow, which flows in a roughly arc-shaped area. However, some patients will sneeze or cough when entering the detection chamber 11 or when starting the test, which will increase the spread of the virus carried by droplets and aerosols and make it easier to contact the inner wall of the detection chamber 11. For this reason, refer to Figures 6 to 8, this embodiment also provides the following technical solutions, a guide plate 5 is provided in the low-speed flow channel 32, the guide plate 5 is a flat and smooth structure (such as an elliptical plate), the guide plate 5 is rotatably installed in the low-speed flow channel 32 through a rotating rod 51, the rotating rod 51 is arranged along the length direction of the bed frame 22, a guide plate control assembly is provided in the bed frame 22, the guide plate control assembly is arranged at a position where the bed frame 22 is away from the nuclear magnetic resonance scanning body 1, and is arranged away from the nuclear magnetic resonance scanning body 1, the guide plate control assembly includes a drive motor 6, the drive motor 6 is fixedly installed in the bed frame 22, a gear structure is provided on the rotating rod 51, and a transmission gear is installed on the output shaft of the drive motor 6, the transmission gear and the gear structure on the rotating rod 51 are meshed with each other, thereby realizing the rotation control of the rotating rod 51, thereby changing the direction of the guide plate 5 in the airflow channel assembly 3, referring to Figure 7 , guided by the guide plate 5, the low-speed flow channel 32 can form a sub-flow with a certain direction when outputting the airflow. The sub-flow will form a certain reflection after flowing to the inner wall of the detection chamber 11. Therefore, in actual use, by driving the guide plate 5 to rotate continuously, part of the airflow direction is disturbed to form reflected airflows at different positions and angles, so that a group of annular airflows from one side to the other side can be formed in the detection chamber 11 as a whole. During this process, the edge of the airflow will also produce some irregular airflows from the inner wall of the detection chamber 11 to the center of the detection chamber 11, further preventing droplets and aerogels from contacting the inner wall of the detection chamber 11. The above-mentioned airflow scheme does not require accuracy and high precision. Therefore, it is only necessary to form a certain irregular airflow while ensuring that the above-mentioned annular airflow can be formed to improve the blocking effect on the virus and increase the radiation range of the airflow, so there is no need to accurately control the direction of the airflow.

[0048] Since air flow will accelerate the drying of liquid, when the patient coughs or sneezes without wearing a mask, some droplets adhere to the inner wall of the detection cavity 11, and the airflow affects the evaporation of water, causing the droplets to dry and solidify, making it difficult to blow away the virus. For this reason, this embodiment also provides a humidification solution. For details, refer to Figures 8 to 10The rotating rod 51 is a hollow structure, and a liquid seepage structure 52 (such as a material with a microporous structure such as a sponge or wood chip) is embedded and installed on both sides of the guide plate 5. The guide plate control assembly also includes a joint pipe 7, which is fixedly installed in the bed frame 22. The rotating rod 51 is rotatably inserted in the joint pipe 7. A sealing structure is provided between the rotating rod 51 and the joint pipe 7. A seepage channel 53 is provided between the liquid seepage structure 52 and the rotating rod 51. A water pipe 71 is connected to the joint pipe 7, and the water pipe 71 is connected to the liquid supply pump and water, so that when necessary, liquid can be supplied to the rotating rod 5. 1, thereby moistening the permeable structure 52, so that the airflow flowing through the permeable structure 52 can be humidified, and then the air near the inner wall of the detection cavity 11 is humidified, so as to prevent droplets or aerogels from drying on the inner wall of the detection cavity 11 and being blown away. In addition, the joint pipe 7 is also connected to a disinfectant pipe 72, and the disinfectant pipe 72 is connected to another set of liquid supply pumps and disinfectant, that is, when the equipment is not in use, disinfectant can also be injected into the permeable structure 52, and carried by the output airflow blown out by the low-speed flow channel 32 to disinfect the inner cavity of the detection cavity 11.

[0049] In addition, if the humidity in the detection cavity 11 is high for a long time, it is easy to affect the device. Therefore, when no one sneezes or coughs, or the device is not in use, humidification is not required. For details, refer to Fig. 9 and Fig.10 , elastic coatings 54 are fixedly connected to both sides of the guide plate 5, and the elastic coatings 54 are located on the outside of the liquid permeation structure 52. When there is no external force, the elastic coatings 54 are perpendicular to the outer wall of the guide plate 5. When humidification is required, the guide plate 5 is rotated so that the elastic coatings 54 are located on the side of the liquid permeation structure 52 close to the airflow direction, and then under the action of the airflow, the elastic coatings 54 are turned away from the liquid permeation structure 52. When humidification is not required, the guide plate 5 is rotated and the direction is adjusted so that the elastic coatings 54 face the airflow, and then under the blowing of the airflow, they can fit on the surface of the guide plate 5 and cover the liquid permeation structure 52. At the same time, all the water in the rotating rod 51 is discharged, and humidification is no longer required. At the same time, in order to avoid the influence of the airflow conveyed by the blowing and suction control component 4, refer to Fig.11 The blowing and suction control component 4 also includes a drying component 43 , which is fixedly installed in the liquid permeation structure 52 and dries the airflow delivered to the detection cavity 11 and the airflow sucked away from the detection cavity 11 .

[0050] In addition, if it is a high-incidence period of influenza or other emergency periods, there are more coughing and sneezing phenomena, and the possibility of droplets adhering to the inner wall of the detection cavity 11 is greater. Figures 12 to 15This embodiment also provides a wiping solution. Specifically, an inflatable ring storage cavity 25 is provided at the end of the bed frame 22, and an inflatable ring 8 is installed inside the inflatable ring storage cavity 25. An inflatable pipeline 82 is provided in the bed frame 22, and the inflatable pipeline 82 is connected to the inflatable ring 8. The inflatable pipeline 82 is connected to an inflatable pump. After the inflatable ring 8 is inflated, it becomes a circular ring structure adapted to the inner wall of the detection cavity 11, and a wiping structure 81 is fixedly installed on the outer wall of the inflatable ring 8.

[0051] It should be noted that the inflatable ring 8 can be stored in the inflatable ring storage chamber 25 after being deflated, and does not need to be unfolded, which will not affect the detection of the MRI scanning body 1, and a cover can be provided above the inflatable ring storage chamber 25, and a disinfection structure can be provided inside the inflatable ring storage chamber 25, such as an alcohol nozzle, and the wiping structure 81 can be made of cotton cloth or non-woven fabric structure, which is attached to the inflatable ring 8 by Velcro, and the inflatable pipeline 82 can also be connected to the exhaust structure. When in use, first inflate the inflatable ring 8, and then inflate the ring 8. The ring 8 is inflated to expand the inflatable ring 8, and the wiping structure 81 is fitted with the inner wall of the detection chamber 11. Then the bed frame 22 is controlled to move out of the detection chamber 11, and the inner wall of the detection chamber 11 can be wiped. After completion, the inflatable ring 8 is deflated, and then air is pumped out to shrink the inflatable ring 8 into the inflatable ring storage chamber 25 for next use. The disinfection structure in the inflatable ring storage chamber 25 can also disinfect the wiping structure 81 and moisten the wiping structure 81 with alcohol for wiping.

[0052] For further information, please refer to the attached Fig.15 In this embodiment, the inflatable ring 8 is further improved. Flexible ring tubes 83 are provided on both sides of the inflatable ring 8. The flexible ring tubes 83 are of a rubber structure. The flexible ring tubes 83 are provided with a plurality of groups of suction holes 84 at positions corresponding to the inner wall of the detection cavity 11. The flexible ring tubes 83 are connected to the vacuum pump structure through a pipeline. In the process of wiping, the volatile alcohol and the nearby air can be extracted with the help of the flexible ring tubes 83 and the suction holes 84. On the one hand, it can ensure that the virus will not spread when cleaning the virus on the inner wall of the detection cavity 11. On the other hand, the smell of alcohol will not affect the patient, thereby improving the comfort of using the device.

[0053] It should be noted that the above-mentioned solution for patients sneezing or coughing can be equipped with a sound sensor or a voice recognition device, which is only turned on when the patient sneezes or coughs. It can also be operated when the device is not in use, making the device more intelligent and convenient.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A nuclear magnetic resonance detection device, characterized in that: The invention comprises a nuclear magnetic resonance scanning machine body (1) and a patient bed (2), wherein the nuclear magnetic resonance scanning machine body (1) comprises a detection chamber (11), and the patient bed (2) comprises a bed base (21) and a bed frame (22), wherein the bed frame (22) is slidably arranged on the bed base (21), and both sides of the bed frame (22) are provided with air flow channel components (3), and two groups of blowing and suction control components (4) are arranged on both sides of the bed base (21), and the two groups of blowing and suction control components (4) are respectively connected to the two groups of air flow channel components (3), and the air flow channel components (3) comprise a high-speed flow channel (31) and a low-speed flow channel (32) arranged in parallel. The flow channel (32) is provided with the flow channel openings of the high-speed flow channel (31) and the low-speed flow channel (32) being arranged in close contact with the inner wall of the detection chamber (11), and the high-speed flow channel (31) is closer to the detection chamber (11) than the low-speed flow channel (32), the high-speed flow channel (31) and the low-speed flow channel (32) are respectively connected to one end of the uniform air chamber (34), and the other ends of the two uniform air chambers (34) are respectively connected to one end of the air flow conveying pipeline (33), and the blowing and suction control component (4) includes a blowing and suction pump (41), and the other end of the air flow conveying pipeline (33) is connected to the blowing and suction pump (41).

2. The nuclear magnetic resonance detection device according to claim 1, characterized in that: The cross-sectional size of the high-speed flow channel (31) and the low-speed flow channel (32) is the same as the cross-sectional size of the channel connecting the gas-uniform cavity (34); the high-speed flow channel (31) is configured as a contracting channel, and the low-speed flow channel (32) is configured as an expanding channel; the flow channel openings of the high-speed flow channel (31) and the low-speed flow channel (32) are both configured as arc-shaped channels coaxial with the detection cavity.

3. The nuclear magnetic resonance detection device according to claim 1, characterized in that: The blowing and suction control assembly (4) comprises a disinfection chamber (42), wherein the disinfection chamber (42) is arranged on a connection passage between the air flow conveying pipeline (33) and the blowing and suction pump (41), and an air disinfection structure (421) is arranged inside the disinfection chamber (42).

4. The nuclear magnetic resonance detection device according to claim 1, characterized in that: The airflow channel assembly (3) is arranged along the length direction of the bed frame (22); a shielding structure (24) for covering the airflow channel assembly (3) is installed on the bed base (21); the shielding structure (24) is slidably matched with the channel opening of the airflow channel assembly (3).

5. The nuclear magnetic resonance detection device according to claim 1, characterized in that: A guide plate (5) is rotatably mounted in the low-speed flow channel (32); the guide plate (5) is a flat and smooth structure; a rotating rod (51) is connected to the guide plate (5); the rotating rod (51) is arranged along the length direction of the bed frame (22); a guide plate control component is arranged in the bed frame (22); the guide plate control component comprises a drive motor (6); the drive motor (6) is fixedly mounted in the bed frame (22); a gear structure is arranged on the rotating rod (51); a transmission gear is mounted on the output shaft of the drive motor (6); the transmission gear and the gear structure are meshed with each other.

6. The nuclear magnetic resonance detection device according to claim 5, characterized in that: The rotating rod (51) is a hollow structure. Both sides of the guide plate (5) are embedded with a seepage structure (52). The blowing and suction control assembly (4) further comprises a drying assembly (43). The drying assembly (43) is fixedly mounted in the seepage structure (52). The guide plate control assembly further comprises a joint pipe (7). The joint pipe (7) is fixedly mounted in the bed frame (22). The rotating rod (51) is rotatably inserted into the joint pipe (7). A sealing structure is provided between the rotating rod (51) and the joint pipe (7). A seepage channel (53) is provided between the seepage structure (52) and the rotating rod (51). A water pipe (71) and a disinfectant pipe (72) are connected to the joint pipe (7). The water pipe (71) is connected to a liquid supply pump, and the disinfectant pipe (72) is connected to the liquid supply pump.

7. The nuclear magnetic resonance detection device according to claim 6, characterized in that: Both sides of the guide plate (5) are fixedly connected with elastic coatings (54), the elastic coatings (54) are located outside the liquid seepage structure (52), and the elastic coatings (54) are perpendicular to the outer wall of the guide plate (5) when no external force is applied.

8. The nuclear magnetic resonance detection device according to claim 1, characterized in that: An inflatable ring storage chamber (25) is provided at the end of the bed frame (22), an inflatable ring (8) is installed inside the inflatable ring storage chamber (25), an inflatable pipeline (82) is provided in the bed frame (22), the inflatable pipeline (82) is connected to the inflatable ring (8), the inflatable pipeline (82) is connected to an inflatable pump, and the inflatable ring (8) becomes a circular ring structure adapted to the inner wall of the detection chamber (11) after being inflated, and a wiping structure (81) is fixedly installed on the outer wall of the inflatable ring (8).

9. The nuclear magnetic resonance detection device according to claim 8, characterized in that: Flexible ring tubes (83) are provided on both sides of the inflation ring (8); the flexible ring tubes (83) are of a rubber structure; the flexible ring tubes (83) are provided with a plurality of groups of air suction holes at positions corresponding to the inner wall of the detection cavity (11); and the flexible ring tubes (83) are connected to an air pump structure via a pipeline.

10. The nuclear magnetic resonance detection device according to claim 1, characterized in that: A plurality of groups of moving wheels (23) are installed at the bottom of the bed base (21); an armrest is provided on the bed base (21); and a docking structure is provided between the bed base (21) and the nuclear magnetic resonance scanning machine body (1).

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