A nuclear magnetic resonance detection device

Abstract

The present invention discloses a nuclear magnetic resonance detection device, belonging to the technical field of improvement of nuclear magnetic resonance detection equipment, including a nuclear magnetic resonance scanning body and a patient bed. The bed frame is slidably arranged on the bed base, and air flow channel components are built in both sides of the bed frame. Two groups of blowing and suction control components are arranged on both sides of the bed base, and 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 component includes a high-speed channel and a low-speed channel arranged in parallel. The flow ports of the high-speed channel and the low-speed channel are arranged in contact with the inner wall of the detection cavity, and the high-speed channel is closer to the detection cavity than the low-speed channel. One ends of the high-speed channel and the low-speed channel are respectively communicated with one end of an air equalizing cavity, and the other ends of the two air equalizing cavities are respectively communicated with one end of an air flow conveying pipeline. The blowing and suction control component includes a blowing and suction pump, and the other end of the air flow conveying pipeline is communicated with the blowing and suction pump. The present invention can remove the virus carried by the patient during exhalation, and avoid cross-infection and the spread of infectious diseases during subsequent use.

Description

Technical Field

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

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

[0003] The nuclear magnetic resonance detection equipment mainly includes a nuclear magnetic resonance scanning body, a host control system, and a patient bed. Among them, the host control system includes a computer and a console, which are used to process scanning data and control the equipment; the nuclear magnetic resonance scanning body includes a magnet (generating a strong magnetic field, usually a superconducting magnet to ensure high-resolution imaging), gradient coils (generating variable gradients in the magnetic field for spatial encoding of positioning and imaging), radiofrequency coils (used to transmit radiofrequency pulses and receive reflected signals, divided into body coils and local coils), and a cooling system (maintaining the superconducting magnet working at low temperature, usually using liquid helium). A circular detection cavity is formed in the middle of the nuclear magnetic resonance scanning body, and this detection cavity 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 and detected is placed in the scanning area for scanning.

[0004] Since the overall size of the nuclear magnetic resonance detection equipment is relatively large, in order to make full use of space, the scanning area in the nuclear magnetic resonance scanning body is relatively limited, usually large enough for patients with normal body types to enter. And because a strong magnetic field will be formed when the equipment is turned on, ferromagnetic objects and other metal objects are not allowed in the scanning area and near the body to avoid accidents caused by their influence by the magnetic field. At the same time, there should 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 nuclear magnetic resonance scanning body is relatively empty without redundant equipment.

[0005] Sometimes, patients need to undergo a full-body examination. Therefore, as the patient bed moves deeper, the scanning space is overall a long and narrow space with poor internal air flow. During the high-incidence period of infectious diseases, if the patient is carrying a virus but the doctor is unaware, or the doctor is aware but a magnetic resonance examination is still necessary, when the patient is undergoing an examination in the deep detection cavity, the virus carried by the exhaled air will float in the detection cavity. Although most of the air can be taken out when the patient follows the patient bed out of the detection cavity, forming air flow and taking out most of the virus, during the actual examination process, some viruses will float near the inner wall of the detection cavity and even temporarily adhere to the inner wall of the detection cavity following the aerosol. When the patient bed is moved out, the air flow near the inner wall of the scanning space is poor, resulting in some viruses still remaining in the detection cavity.

[0006] After the patient has used the device, the virus will remain in the detection cavity. Even when the magnetic resonance scanning machine is in a closed state after use, the strong static magnetic field generated by its superconducting magnet still exists even if the device is not operating. And for the good protection of the machine, it is not convenient for medical staff to enter the detection cavity. Therefore, the virus carried by the exhaled breath of the previous patient is likely to remain in the detection cavity, which is likely to cause cross-infection during subsequent use, bringing greater disease risks to patients and also 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 magnetic resonance detection device that can remove the virus carried by the patient's exhaled breath and avoid cross-infection and the spread of infectious diseases during subsequent use.

[0008] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0009] A magnetic resonance detection device includes a magnetic resonance scanning machine and a patient bed. The magnetic resonance scanning machine includes a detection cavity. The patient bed includes a bed base and a bed frame. The bed frame is slidably arranged on the bed base. Airflow channel components are built in both sides of the bed frame. Two blowing and suction control components are arranged on both sides of the bed base. The two blowing and suction control components are respectively connected to the two airflow channel components. The airflow channel component includes a high-speed channel and a low-speed channel arranged in parallel. The flow ports of the high-speed channel and the low-speed channel are attached to the inner wall of the detection cavity, and the high-speed channel is closer to the detection cavity than the low-speed channel. One ends of the high-speed channel and the low-speed channel are respectively communicated with one end of an air equalizing cavity. The other ends of the two air equalizing cavities are respectively communicated with one end of an airflow conveying pipeline. The blowing and suction control component includes a blowing and suction pump. The other end of the airflow conveying pipeline is communicated with the blowing and suction pump.

[0010] The cross-sectional sizes of the high-speed flow channel and the low-speed flow channel are the same as that of the air equalizing chamber connection channel. The high-speed flow channel is arranged as a reduced orifice channel, and the low-speed flow channel is arranged as an enlarged orifice channel. The flow ports of the high-speed flow channel and the low-speed flow channel are both arranged as arc-shaped channels coaxial with the detection chamber.

[0011] The blowing and suction control assembly includes a disinfection chamber, which is arranged on the connection channel between the air flow conveying pipeline and the blowing and suction pump. An air disinfection structure is arranged inside the disinfection chamber.

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

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

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

[0015] Elastic coating films are fixedly connected to both sides of the flow guide plate. The elastic coating films are located outside the liquid seepage structure. The elastic coating films are perpendicular to the outer wall of the flow guide plate when there is no external force.

[0016] An inflatable ring storage cavity is arranged at the end of the bed frame. An inflatable ring is installed inside the inflatable ring storage cavity. An air charging pipeline is arranged in the bed frame. The air charging pipeline is connected to the inflatable ring. The air charging pipeline is connected to an air charging pump. After the inflatable ring is inflated and expanded, it is a circular ring structure adapted to the inner wall of the detection chamber. A wiping structure is fixedly installed on the outer wall of the inflatable ring.

[0017] Both sides of the inflatable ring are provided with flexible ring pipes. The flexible ring pipes are made of rubber. Multiple groups of air suction holes are arranged at positions of the flexible ring pipes corresponding to the inner wall of the detection cavity. The flexible ring pipes are connected to an air extraction pump structure through pipelines.

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

[0019] Advantages of the present invention: The present invention provides a nuclear magnetic resonance detection device. Airflow channel components are built in on both sides of the bed frame. The airflow channel components include a high-speed channel and a low-speed channel arranged in parallel. The air inlets of the high-speed channel and the low-speed channel are attached to the inner wall of the detection cavity. One group of the high-speed channel and the low-speed channel blows air outwards, and the other group of the high-speed channel and the low-speed channel sucks air inwards. Thus, a circular airflow shielding layer can be formed in the detection cavity. The air exhaled by the patient can be taken away by the above-mentioned airflow during the process of approaching the detection cavity and sucked away by the high-speed channel and the low-speed channel that suck air. Therefore, the phenomenon that the virus approaches and adheres to the inner wall of the detection cavity can be greatly reduced. At the same time, an effective airflow exchange can be formed in the detection cavity during the detection of the device, avoiding the spread of the virus in the air, improving the safety of the device, and reducing cross-infection. Description of the Drawings

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

[0021] Figure 2 It 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 component of the present invention;

[0023] Figure 4 It 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 An enlarged view of the structure of part A;

[0025] Figure 6 It is a schematic diagram of adding a flow guiding structure in the low-pressure channel of the present invention;

[0026] Figure 7 It is a diagram of the guiding effect of the flow guiding plate on the airflow of the present invention;

[0027] Figure 8 It is a schematic diagram of the overall structure of the flow guiding plate control component of the present invention;

[0028] Figure 9 It is a working state diagram of the flow guiding plate of the present invention in the humidification state;

[0029] Figure 10 This is a schematic diagram of the operation of the present invention in a non-humidified state;

[0030] Figure 11 This is a schematic structural diagram of the blowing and suction control component of the present invention;

[0031] Figure 12 This is a state diagram of the inflatable ring of the present invention after inflation;

[0032] Figure 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] Figure 14 This is the present invention Figure 13 An enlarged view of the structure of part B;

[0034] Figure 15 This is a schematic structural diagram of the improved inflatable ring of the present invention;

[0035] Reference numerals: 1 - NMR scanning body; 11 - detection cavity; 2 - patient bed; 21 - bed base; 22 - bed frame; 23 - moving wheels; 24 - shielding structure; 25 - inflatable ring storage cavity; 3 - air flow channel assembly; 31 - high-speed channel; 32 - low-speed channel; 33 - air flow delivery pipeline; 34 - air equalizing cavity; 4 - blowing and suction control component; 41 - blowing and suction pump; 42 - disinfection chamber; 421 - air disinfection structure; 43 - drying component; 5 - deflector; 51 - rotating rod; 52 - liquid seepage structure; 53 - seepage channel; 54 - elastic film; 6 - drive motor; 7 - connecting pipe; 71 - water pipe; 72 - disinfectant liquid pipe; 8 - inflatable ring; 81 - wiping structure; 82 - inflatable pipeline; 83 - flexible ring pipe; 84 - suction hole. Detailed implementation manners

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

[0037] Embodiment 1

[0038] In the prior art, an NMR detection device mainly consists of an NMR 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 arranged on the bed base 21. During use, the bed frame 22 is aligned with the detection cavity 11, and by controlling the movement of the bed frame 22, the part of the patient that needs to be scanned and detected is sent into the detection cavity 11 for scanning and monitoring. The above solutions related to NMR detection are all common techniques of existing NMR detection equipment, and their detailed techniques have been disclosed in existing equipment. Therefore, no more detailed description will be given in this embodiment.

[0039] The improvement of this embodiment lies in that: as Figure 1 and Figure 2 shown, air flow channel assemblies 3 are arranged on both sides of the bed frame 22. The air flow channel assemblies 3 are built inside the bed frame 22. Two blowing and suction control assemblies 4 are arranged on the bed base 21. The two blowing and suction control assemblies 4 are respectively connected to the two air flow channel assemblies 3 to realize independent control of the two air flow channel assemblies 3. Specifically, referring to Figure 3 and Figure 5 , the air flow 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 cavity 11, and the high-speed channel 31 is arranged close to the inner wall of the detection cavity 11. An air equalizing cavity 34 is also arranged inside the bed frame 22 at the position corresponding to the air flow channel assembly 3. The air equalizing cavity 34 is communicated with 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 installed on the bed base 21 and does not move together with the bed frame 22. The blowing and suction pump 41 is connected to the air equalizing cavity 34 through an air delivery pipeline 33. Thus, it can control the high-speed channel 31 and the low-speed channel 32 to blow air or suck air through the blowing and suction pump 41. When the high-speed channel 31 and the low-speed channel 32 blow air, the output gas flow rate of the high-speed channel 31 is greater than that of the low-speed channel 32.

[0040] During operation, one of the air flow channel assemblies 3 blows air out under the action of the blowing and suction pump 41. This air flow blows towards the inner wall of the detection cavity 11, while the other air flow channel assembly 3 sucks air in under the action of the blowing and suction pump 41, sucking the air near the inner wall of the detection cavity 11 inward. The blowing and suction of the two air flow channel assemblies 3 are not fixed and can be exchanged regularly. Among them, the channel cross-sectional sizes of the high-speed channel 31 and the low-speed channel 32 connected to the air equalizing cavity 34 are the same, that is, the output air pressure and flow rate of the air equalizing cavity 34 to the high-speed channel 31 and the low-speed channel 32 are basically the same. The high-speed channel 31 is set as a reduced orifice channel, and the low-speed channel 32 is set as an expanded orifice channel. The channel openings of the high-speed channel 31 and the low-speed channel 32 are both set as circular arc channels coaxial with the detection cavity 11.

[0041] During actual use, when the patient enters the detection cavity 11 following the bed frame 22, referring to Figure 3, where one set of high-speed flow channels 31 and low-speed flow channels 32 blow air outwards, and the other set of high-speed flow channels 31 and low-speed flow channels 32 suck air inwards, thereby enabling a circular air flow shielding layer to be formed in the detection cavity 11. The air exhaled by the patient can be carried away by the above-mentioned air flow during the process of approaching the detection cavity 11 and sucked away by the high-speed flow channels 31 and low-speed flow channels 32 that suck air, thereby greatly reducing the phenomenon of the virus approaching and adhering to the inner wall of the detection cavity 11. Among them, due to the relatively flat channel opening of the high-speed flow channel 31 and the relatively large internal pressure, the air flow velocity blown out during blowing is relatively fast. Therefore, a powerful air flow layer can be formed near the inner wall of the detection cavity 11 as a protection guarantee to effectively prevent the virus from approaching the inner wall of the detection cavity 11. Even if some viruses come into contact with the inner wall of the detection cavity 11, they can also be carried away by the high-speed air flow. The orifice of the low-speed flow channel 32 is set to be flared. When outputting air flow, it can form an air flow with a relatively low flow velocity and a relatively large radiation range, thereby enabling effective air flow exchange to be formed in the detection cavity 11 while the device is detecting, avoiding the spread of viruses in the air, improving the safety of the device, and reducing cross-infection. Among them, the main function of the above-mentioned air flow is to interfere with and drive the floating of the virus. Therefore, as long as a roughly circular air flow can be formed, there is no precision requirement for the specific range of the air flow.

[0042] Sufficient storage space is provided in the bed base 21 and the bed frame 22 to facilitate the smooth dragging of the air flow conveying pipeline 33 when the bed frame 22 moves. Therefore, the above-mentioned setting will not affect the actual detection of the nuclear magnetic resonance scanning body 1 and can ensure the normal detection of the equipment. For the control of the air flow velocity output by the high-speed flow channel 31 and the low-speed flow channel 32, in addition to using the techniques of constricted orifices and flared orifices to control, the high-speed flow channel 31 and the air flow conveying pipeline 33 can also be separately connected to the corresponding blowing and suction pump 41 structures to form independent control, thereby making it more convenient to control the air flow velocity output by the high-speed flow channel 31 and the low-speed flow channel 32.

[0043] In one embodiment of the present invention, one set of high-speed flow channels and low-speed flow channels blow air outwards, and the other set of high-speed flow channels and low-speed flow channels suck air inwards, thereby enabling a circular air flow shielding layer to be formed in the detection cavity. The air exhaled by the patient can be carried away by the above-mentioned air flow during the process of approaching the detection cavity and sucked away by the high-speed flow channels and low-speed flow channels that suck air, thereby greatly reducing the phenomenon of the virus approaching and adhering to the inner wall of the detection cavity, and enabling effective air flow exchange to be formed in the detection cavity while the device is detecting, avoiding the spread of viruses in the air, improving the safety of the device, and reducing cross-infection.

[0044] Embodiment 2

[0045] This embodiment is a further improvement based on Embodiment 1. Further, the blowing and suction control assembly 4 further includes a disinfection chamber 42. The disinfection chamber 42 is provided on the connection channel between the air flow delivery pipeline 33 and the blowing and suction pump 41. An air disinfection structure 421 (such as an ultraviolet disinfection lamp) is provided inside the disinfection chamber 42. Whether the air inhaled from the detection chamber 11 or the air output to the detection chamber 11 passes through the corresponding disinfection chamber 42 and is disinfected by the air disinfection structure 421 to ensure the overall environmental safety in the detection chamber. Among them, in order to form a full-range air flow shielding layer after the entire bed frame 22 enters the detection chamber 11, the air flow channel assembly 3 can be arranged along the length direction of the bed frame 22, and a shielding structure 24 for covering the air flow channel assembly 3 is fixedly installed on the bed base 21. Only the part of the air flow channel assembly 3 that enters the detection chamber 11 and is disengaged from the shielding of the shielding structure 24 can perform the suction and blowing operations, thereby reducing the impact on the air outside the detection chamber 11.

[0046] In the above embodiment, since the equipment of the nuclear magnetic resonance scanning body 1 is large and inconvenient to move, and for some patients, they themselves have no mobility, so medical staff need to support or even move them onto the bed frame 22. However, for the nuclear magnetic resonance detection rooms in some hospitals, the indoor space is small, and for safety protection, it is not appropriate to have multiple people inside at the same time. Therefore, this embodiment also provides the following technical solution. Refer to Figure 1 and Figure 4 , a plurality of sets of moving wheels 23 are installed at the bottom of the bed base 21, a handrail is provided on the bed base 21, and a docking structure is provided between the bed base 21 and the nuclear magnetic resonance scanning body 1, so that the bed base 21 can be easily moved. Then, after the patient is transferred to the bed frame 22 elsewhere, the bed base 21 can be directly pushed into the nuclear magnetic resonance detection room to dock with the nuclear magnetic resonance scanning body 1, thereby reducing the number of people staying in the nuclear magnetic resonance detection room and making the detection more convenient and safe.

[0047] Further, in the above solution, the output air flow during the blowing of the bed base 21 and the low-speed flow channel 32 is a stable air flow, which generally flows in an arc-shaped area. However, when some patients enter the detection chamber 11 or start the detection, they may sneeze or cough, which will strengthen the spread of the virus carried by droplets and aerosols and make it easier to come into contact with the inner wall of the detection chamber 11. For this reason, refer to Figures 6 to 8, this embodiment also provides the following technical solution. A deflector 5 is arranged in the low-speed flow channel 32. The deflector 5 has a flat and smooth structure (such as an elliptical plate). The deflector 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 deflector control assembly is arranged in the bed frame 22. The deflector control assembly is arranged at a position of the bed frame 22 away from the nuclear magnetic resonance scanning body 1 and is set far away from the nuclear magnetic resonance scanning body 1. The deflector control assembly includes a driving motor 6. The driving motor 6 is fixedly installed in the bed frame 22. A gear structure is arranged on the rotating rod 51. A transmission gear is installed on the output shaft of the driving motor 6. The transmission gear meshes with the gear structure on the rotating rod 51, so as to realize the rotation control of the rotating rod 51, thereby changing the direction of the deflector 5 in the air flow channel assembly 3. Refer to Figure 7 , guided by the deflector 5, when the low-speed flow channel 32 outputs air flow, a split air flow with a certain direction can be formed. After the split air flow flows to the inner wall of the detection chamber 11, a certain reflection will be formed. Therefore, during actual use, by driving the deflector 5 to rotate continuously, part of the air flow direction is disturbed, and reflected air flows at different positions and angles are formed. Furthermore, a set of annular air flows from one side to the other side can be formed in the detection chamber 11. During this process, irregular air flows from the inner wall of the detection chamber 11 to the center of the detection chamber 11 will also be generated at the edge of the air flow, further preventing the droplets and aerogels from contacting the inner wall of the detection chamber 11. And the above air flow scheme does not require accuracy and high precision. Therefore, as long as the above annular air flow can be formed while forming certain irregular air flows, the blocking effect on the virus can be improved and the radiation range of the air flow can be increased. Therefore, it is not necessary to precisely control the direction of the air flow.

[0048] Since air flow will accelerate the drying of liquid, when a patient coughs or sneezes without wearing a mask and part of the droplets adhere to the inner wall of the detection chamber 11, the moisture will volatilize under the influence of the air flow and the droplets will dry and solidify, which is not convenient to blow away the virus. For this reason, this embodiment also provides a humidification scheme. Specifically, refer to Figures 8 to 10, the rotating rod 51 has a hollow structure. Leakage structures 52 (such as materials with microporous structures like sponges and wood chips) are embedded and installed on both sides of the flow guide plate 5. The flow guide plate control assembly further includes a joint pipe 7. The joint pipe 7 is fixedly installed in the bed frame 22, and 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 leakage 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 a liquid supply pump and water. Thus, when needed, water can be conveyed into the rotating rod 51, and then the leakage structure 52 can be moistened, so that the air flow passing through the leakage structure 52 can be humidified, and then the air near the inner wall of the detection cavity 11 can be humidified, avoiding the drying of droplets or aerogels on the inner wall of the detection cavity 11 and preventing them from being blown away. In addition, a disinfectant pipe 72 is also connected to the joint pipe 7, and the disinfectant pipe 72 is connected to another set of liquid supply pumps and disinfectant. That is, when the device is not in use, disinfectant can also be injected into the leakage structure 52 and carried by the output air flow blown out through the low-speed flow channel 32 to disinfect the inner cavity of the detection cavity 11.

[0049] In addition, if the humidity inside the detection cavity 11 is high for a long time, it is likely to affect the device. Therefore, when no one is sneezing or coughing, or when the device is not in use, humidification can be stopped. Specifically, referring to Figure 9 and Figure 10 , elastic films 54 are fixedly connected to both sides of the flow guide plate 5. The elastic films 54 are located outside the leakage structure 52. The elastic films 54 are perpendicular to the outer wall of the flow guide plate 5 without external force. When humidification is needed, the flow guide plate 5 is rotated so that the elastic films 54 are on the side of the leakage structure 52 close to the air flow direction. Then, under the action of the air flow, the elastic films 54 flip away from the leakage structure 52. When humidification is not needed, the flow guide plate 5 is rotated to adjust the direction so that the elastic films 54 face the air flow. Then, under the blowing of the air flow, they can fit on the surface of the flow guide plate 5 and cover the leakage structure 52. At the same time, all the water in the rotating rod 51 is drained, and humidification can be stopped. At the same time, to avoid the influence of the air flow conveyed by the blowing and suction control assembly 4, referring to Figure 11 , the blowing and suction control assembly 4 further includes a drying assembly 43. The drying assembly 43 is fixedly installed in the leakage structure 52 to dry the air flow conveyed to the detection cavity 11 and the air flow sucked away from the detection cavity 11.

[0050] In addition, if it is the 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. For this reason, referring to Figures 12 to 15, this embodiment also provides a wiping solution. Specifically, an inflatable ring storage cavity 25 is provided at the end of the bed frame 22. An inflatable ring 8 is installed inside the inflatable ring storage cavity 25. An inflatable pipe 82 is provided in the bed frame 22. The inflatable pipe 82 is connected to the inflatable ring 8. The inflatable pipe 82 is connected to an inflator. After the inflatable ring 8 is inflated and expanded, it is a circular ring structure adapted to the inner wall of the detection cavity 11. A wiping structure 81 is fixedly installed on the outer wall of the inflatable ring 8.

[0051] It should be noted that after deflating, the inflatable ring 8 can be stored in the inflatable ring storage cavity 25 without being unfolded, which will not affect the detection of the nuclear magnetic resonance scanning body 1. A cover can be provided above the inflatable ring storage cavity 25, and a disinfection structure, such as an alcohol spray head, can be provided inside the inflatable ring storage cavity 25. The wiping structure 81 can be made of cotton or non-woven fabric and is pasted on the inflatable ring 8 through Velcro. The inflatable pipe 82 can also be connected to an air extraction structure. During use, first inflate the inflatable ring 8 to expand it, make the wiping structure 81 fit the inner wall of the detection cavity 11, and then control the bed frame 22 to move out of the detection cavity 11, so that the inner wall of the detection cavity 11 can be wiped once. After that, deflate the inflatable ring 8, and then extract air to make the inflatable ring 8 contract into the inflatable ring storage cavity 25 for the next use. Among them, the disinfection structure in the inflatable ring storage cavity 25 can also disinfect the wiping structure 81 and make the wiping structure 81 wet with alcohol for wiping.

[0052] Further, referring to the attached description Figure 15 , this embodiment further improves the inflatable ring 8. Flexible ring pipes 83 are provided on both sides of the inflatable ring 8. The flexible ring pipes 83 are made of rubber. Multiple suction holes 84 are provided at the positions of the flexible ring pipes 83 corresponding to the inner wall of the detection cavity 11. The flexible ring pipes 83 are connected to an air extraction pump structure through pipes. Thus, during the wiping process, the volatilized alcohol and nearby air can be pumped away by means of the flexible ring pipes 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 alcohol smell will not affect the patient, improving the comfort of using the device.

[0053] It should be noted that for the above-mentioned solution for patients sneezing or coughing, a sound sensor or a voice recognition device can be set, and it can be turned on only when it is found that phenomena such as patients sneezing or coughing occur, or it can also be operated during the non-use period of the device to make the device more intelligent and convenient.

[0054] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope 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, and the high-speed flow channel (31) and the low-speed flow channel (32) are arranged in parallel. The flow channel opening is arranged to fit 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). The blowing and suction control component (4) comprises 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). When the high-speed flow channel (31) and the low-speed flow channel (32) are blown, the output gas flow rate of the high-speed flow channel (31) is greater than the output gas flow rate of the low-speed flow channel (32); 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; and 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 (11); 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); A guide plate (5) is rotatably mounted in the low-speed flow channel (32), the guide plate (5) being a flat and smooth structure, the guide plate (5) being connected to a rotating rod (51), the rotating rod (51) being arranged along the length direction of the bed frame (22), the bed frame (22) being provided with a guide plate control assembly, the guide plate control assembly comprising a drive motor (6), the drive motor (6) being fixedly mounted in the bed frame (22), the rotating rod (51) being provided with a gear structure, the output shaft of the drive motor (6) being provided with a transmission gear, the transmission gear being meshed with the gear structure; 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 disinfection chamber (42). 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 group of liquid supply pumps and water, and the disinfectant pipe (72) is connected to another group of liquid supply pumps and disinfectant.

2. 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).

3. The nuclear magnetic resonance detection device according to claim 2, 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.

4. The nuclear magnetic resonance detection device according to claim 3, 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).

5. The nuclear magnetic resonance detection device according to claim 4, 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.

6. The nuclear magnetic resonance detection device according to claim 5, 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).

Images