Nuclear magnetic resonance detection device

Abstract

The invention belongs to the technical field of nuclear magnetic resonance detection equipment, and particularly relates to a nuclear magnetic resonance detection device which comprises nuclear magnetic resonance equipment and a detection bed for a patient to lie flat, one ends of the bandages are fixedly connected with the detection bed, one end of the detection bed is fixedly provided with a plurality of U-shaped connecting plates, the connecting plates are in threaded connection with positioning bolts, and one ends of the positioning bolts abut against the bandages; the headrest base is fixedly installed on the detection bed, two flexible auxiliary pillows are symmetrically arranged on the detection bed, and the two auxiliary pillows can be adjusted; through the designed structure, a patient to be examined can be rapidly fixed, and meanwhile targeted fixing is conducted according to the requirements of different patients. Therefore, the patient is prevented from moving uncontrollably during examination due to own diseases, so that the examination result is prevented from being influenced.

Description

Technical Field

[0001] This invention belongs to the technical field of nuclear magnetic resonance detection equipment, specifically a nuclear magnetic resonance detection device. Background Technology

[0002] Magnetic resonance imaging (MRI) is a non-invasive imaging technique based on the phenomenon of nuclear magnetic resonance. Human tissues contain a large number of hydrogen nuclei (protons), which carry a positive charge and possess spin characteristics. Normally, their spin directions are random. When the human body enters the strong magnetic field of an MRI machine, the hydrogen protons align themselves along the magnetic field direction (similar to a compass pointing to the north and south poles), remaining in a stable low-energy state. The machine emits radio frequency pulses at a specific frequency, consistent with the resonant frequency of the hydrogen protons. After absorbing the energy from the radio frequency pulses, the hydrogen protons transition from a low-energy state to a high-energy state, their spin direction deviating from the direction of the main magnetic field. When the radio frequency pulses stop, the high-energy hydrogen protons release the absorbed energy, return to the low-energy state, and restore their original spin direction; this process is called relaxation. During relaxation, a weak electromagnetic signal is generated, which is captured by the receiving coil of the machine. Different tissues (such as muscle, fat, tumors, and bone) have different hydrogen proton densities and relaxation times, resulting in variations in signal intensity. The computer processes and analyzes the received signals, combining them with the spatial positioning of the human body using gradient magnetic fields, ultimately generating anatomical or functional images of the human body in cross-sections.

[0003] Because the core requirement for MRI imaging is that the patient and the area being examined remain still during the scan, any slight movement will cause the image to blur. However, patients with certain diseases, such as Parkinson's disease or epilepsy, may not be able to remain still during the examination, thus affecting subsequent imaging.

[0004] Therefore, the present invention provides a nuclear magnetic resonance detection device. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: The present invention provides an MRI detection device, including an MRI machine and a testing bed for the patient to lie flat; it also includes: several straps, one end of which is fixedly connected to the testing bed; several "U"-shaped connecting plates are fixedly installed at one end of the testing bed; positioning bolts are threaded onto the connecting plates, and one end of the positioning bolts abuts against the straps; a headrest base is fixedly installed on the testing bed, and the testing bed has two symmetrically arranged flexible auxiliary pillows, which are adjustable; a disposable nursing pad is laid on the headrest base, and rectangular grooves are opened on both sides of the headrest base, with Velcro fasteners fixedly installed inside the rectangular grooves.

[0007] Furthermore, the headrest base has two symmetrically arranged sliding grooves, and a sliding block is slidably connected inside the sliding groove. The top of the sliding block is fixedly connected to the auxiliary pillow. A positioning hole is opened on one side of the sliding block, and several horizontally arranged through holes are opened on one side of the headrest base. A positioning rod is threaded into the through hole. Several collars are fixedly sleeved on the surface of the positioning rod. The collars are made of rubber.

[0008] Furthermore, a flexible pad is fixedly installed on the headrest base, and one end of the headrest base has a rounded corner.

[0009] Furthermore, a spring is fixedly installed inside the groove, and one end of the spring is fixedly connected to the sliding block.

[0010] Furthermore, two multi-stage telescopic tubes are fixedly installed inside the chute, and one end of the multi-stage telescopic tube is fixedly connected to the sliding block; the multi-stage telescopic tube is composed of several hollow plates slidably connected; a base plate is fixedly installed at the bottom of the sliding block, and several discharge troughs communicating with the chute are opened inside the headrest base, and the discharge troughs are inclined.

[0011] Furthermore, the hollow plates inside the multi-stage telescopic tube are sealed and slidably connected, and the sealed plates are connected to each other through round holes. An air inlet pipe with a one-way valve is fixedly installed at the top of the multi-stage telescopic tube and is connected to the interior. An air outlet pipe with a one-way valve is fixedly installed at the bottom of the multi-stage telescopic tube and is connected to the interior. A filter screen is fixedly installed inside the air outlet pipe, and several arc-shaped guide plates are fixedly installed on one side of the filter screen.

[0012] Furthermore, a protective net is fixedly installed at the port of the discharge chute, and a rubber block is fixedly installed inside the discharge chute near the protective net.

[0013] Furthermore, the headrest base has an inclined groove that communicates with the inside of the discharge trough. A slider is slidably connected inside the groove. A multi-stage sliding tube is fixedly installed between the groove and the slider. The multi-stage sliding tube is composed of several hollow round tubes that are sealed and slidably connected, and the round tubes are connected to each other through round holes. A hollow elastic block is fixedly installed inside the sliding groove, and the elastic block is connected to the multi-stage sliding tube through a connecting pipe.

[0014] Furthermore, a rectangular plate is fixedly installed on one side of the slider, and a plurality of conical unblocking rods are fixedly installed on one side of the rectangular plate.

[0015] Furthermore, two symmetrically arranged and arc-shaped pressure plates are fixedly installed on one side of the base plate, and several rotating columns are rotatably connected to the side of the two pressure plates that are close to each other.

[0016] The beneficial effects of this invention are as follows: 1. The MRI detection device of this invention uses several straps to fix the patient to the examination bed. One end of each strap passes through a connecting plate and is secured with a positioning bolt, thus assisting in fixing the patient to the examination bed. The patient's head rests on a headrest base, with rounded corners to facilitate a smooth transition when the headrest base contacts the patient's head, providing protection and preventing diaphragmatic injury. A flexible pad is also installed on the headrest base for cushioning. A sliding block in a sliding groove moves the auxiliary pillow closer to the patient's head. Once the auxiliary pillow reaches the appropriate position, it stops, and a positioning rod is inserted into the corresponding through hole for fixation, thus securing the sliding block and auxiliary pillow. Two auxiliary pillows temporarily clamp and fix the patient's head; the flexible nature of the pillows prevents pressure injury. This designed structure allows for rapid fixation of the patient during the examination, while also providing targeted fixation based on the needs of different patients. This prevents uncontrolled movement by the patient due to their condition during the examination, which could affect the results.

[0017] 2. In the MRI detection device of this invention, when the patient needs to leave the examination bed after the examination, the positioning rod is pulled out from the positioning hole. At this time, the auxiliary pillow and the sliding block will slide back to their original positions under the action of the spring, causing the two auxiliary pillows to slide away from each other, thus no longer clamping the patient's head. Since multi-stage telescopic tubes are installed on both sides of the sliding block, the sliding block moves along with the multi-stage telescopic tubes. When one of the multi-stage telescopic tubes is sliding and stretched, it draws in external gas through the air inlet pipe and fills the multi-stage telescopic tube with gas through several round holes. When the sliding block resets, it squeezes the previously stretched multi-stage telescopic tube, causing the gas inside the multi-stage telescopic tube to be blown into the slide groove through the air outlet pipe. The gas is dispersed by several arc-shaped guide plates when blown out, thereby expanding the blowing range and achieving efficient cleaning of the slide groove. The filter screen is installed to reduce the possibility of impurities entering the air outlet pipe and causing blockage. The blown gas assists the bottom plate in cleaning the inside of the chute, and the impurities in the chute are discharged through the inclined discharge chute, thereby cleaning the chute and preventing impurities in the chute from affecting the normal sliding of the sliding block.

[0018] 3. The nuclear magnetic resonance (NMR) detection device of this invention uses a protective net to reduce the entry of external impurities into the discharge trough. When large impurities accumulate in the discharge trough, rotating the protective net causes it to deform the rubber stop, thereby opening the discharge trough and facilitating the discharge of internal impurities. After prolonged use, the mesh of the protective net may become clogged with dust, making it difficult for fine dust and impurities to escape. In this case, several unclogging rods are inserted into the mesh of the protective net to clear the blockage. The protective net will not rotate at this time because the stop is blocking it, so the unclogging rods will not rotate when inserted. After completing the above operations, the base plate resets and no longer compresses the elastic block. The gas in the multi-stage sliding tube will return to the elastic block through the connecting pipe, facilitating subsequent reuse. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the nuclear magnetic resonance device in this invention; Figure 2 This is a schematic diagram of the detection bed in this invention; Figure 3 This is a schematic diagram of the structure of the headrest base in this invention; Figure 4 This is a schematic diagram of the structure of the auxiliary pillow in this invention; Figure 5 This is a schematic diagram of the structure of the groove in this invention; Figure 6 This is a schematic diagram of the rectangular groove in this invention; Figure 7 This is a partial cross-sectional view of the air outlet pipe in this invention; Figure 8 This is a schematic diagram of the structure of the base plate in this invention; Figure 9 In this invention Figure 8 A schematic diagram of the structure at point A; Figure 10 This is a schematic diagram of the slider in this invention; Figure 11 This is a schematic diagram of the structure of the pressure plate in this invention.

[0021] In the diagram: 1. Nuclear Magnetic Resonance Equipment; 2. Testing Bed; 3. Straps; 4. Connecting Plate; 5. Positioning Bolt; 6. Headrest Base; 7. Auxiliary Pillow; 8. Slide Groove; 9. Sliding Block; 10. Positioning Hole; 11. Through Hole; 12. Positioning Rod; 13. Collar; 14. Washer; 15. Rounded Corner; 16. Spring; 17. Multi-stage Telescopic Tube; 18. Base Plate; 19. Discharge Groove; 20. Air Inlet Pipe; 21. Air Outlet Pipe; 22. Filter Screen; 23. Guide Plate; 24. Rectangular Groove; 25. Velcro; 26. Protective Net; 27. Elastic Block; 28. Groove; 29. ​​Slider; 30. Multi-stage Sliding Tube; 31. Connecting Pipe; 32. Rectangular Plate; 33. Unblocking Rod; 34. Pressure Plate; 35. Rotating Column. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 11 As shown in the embodiment of the present invention, a magnetic resonance imaging (MRI) device includes an MRI machine 1 and an examination bed 2 for the patient to lie flat; it also includes: several straps 3, one end of which is fixedly connected to the examination bed 2; several "U"-shaped connecting plates 4 are fixedly installed at one end of the examination bed 2; positioning bolts 5 are threadedly connected to the connecting plates 4, and one end of the positioning bolts 5 abuts against the straps 3; a headrest base 6 is fixedly installed on the examination bed 2, and the examination bed 2 has two symmetrically arranged flexible auxiliary pillows 7, which are adjustable. A flexible pad 14 is fixedly installed on the headrest base 6, and one end of the headrest base 6 has a rounded corner 15.

[0024] Specifically, the headrest base 6 has two symmetrically arranged sliding grooves 8, and a sliding block 9 is slidably connected inside the sliding groove 8. The top of the sliding block 9 is fixedly connected to the auxiliary pillow 7. A positioning hole 10 is opened on one side of the sliding block 9, and several horizontally arranged through holes 11 are opened on one side of the headrest base 6. A positioning rod 12 is threadedly connected to the through holes 11. Several collars 13, made of rubber, are fixedly fitted on the surface of the positioning rod 12.

[0025] Specifically, a disposable care sheet is laid on the headrest base 6, and rectangular grooves 24 are opened on both sides of the headrest base 6. Velcro 25 is fixedly installed inside the rectangular grooves 24.

[0026] During operation, when the patient lies on the examination bed 2 of the MRI machine 1, a disposable nursing pad is first laid on the headrest base 6, and the two sides of the disposable nursing pad are tucked into the rectangular groove 24 and secured with Velcro 25. Several straps 3 are then used to secure the patient to the examination bed 2, with one end of the straps 3 passing through the connecting plate 4 and secured with positioning bolts 5, thus assisting in securing the patient to the examination bed 2. At this time, the patient's head rests on the headrest base 6. The rounded corners 15 on the headrest base 6 facilitate a smooth transition when the headrest base 6 contacts the patient's head, thus providing protection and preventing diaphragmatic injury. A flexible pad 14 is also installed on the headrest base 6 for cushioning and protection.

[0027] At this point, the sliding block 9 in the sliding groove 8 moves the auxiliary pillow 7 closer to the patient's head. Once the auxiliary pillow 7 is in the appropriate position, it stops. Then, the positioning rod 12 is inserted into the corresponding through hole 11 and fixed in the positioning hole 10, thus fixing the sliding block 9 and the auxiliary pillow 7. The two auxiliary pillows 7 temporarily clamp and fix the patient's head, and because the auxiliary pillows 7 are flexible, they will not cause any squeezing injury to the patient.

[0028] The structure designed above allows for rapid immobilization of patients during examinations, while also providing targeted immobilization based on the specific needs of different patients. This prevents patients from moving uncontrollably during the examination due to their own conditions, thus avoiding any impact on the examination results.

[0029] A spring 16 is fixedly installed inside the slide chute 8, and one end of the spring 16 is fixedly connected to the sliding block 9. Two multi-stage telescopic tubes 17 are fixedly installed inside the slide chute 8, and one end of the multi-stage telescopic tubes 17 is fixedly connected to the sliding block 9; the multi-stage telescopic tubes 17 are composed of several hollow plates slidably connected together. A base plate 18 is fixedly installed at the bottom of the sliding block 10, and several discharge troughs 19 connected to the slide chute 8 are opened inside the headrest base 6, and the discharge troughs 19 are inclined.

[0030] Specifically, the hollow plates inside the multi-stage telescopic tube 17 are sealed and slidingly connected, and the sealed plates are connected by round holes. An air inlet pipe 20 with a one-way valve is fixedly installed at the top of the multi-stage telescopic tube 17 and communicates with the interior. An air outlet pipe 21 with a one-way valve is fixedly installed at the bottom of the multi-stage telescopic tube 17 and communicates with the interior. A filter screen 22 is fixedly installed inside the air outlet pipe 21, and several arc-shaped guide plates 23 are fixedly installed on one side of the filter screen 22.

[0031] During operation, when the patient needs to leave the examination bed after the examination, the positioning rod 12 is pulled out from the positioning hole 10. At this time, the auxiliary pillow 7 and the sliding block 9 will slide back to their original positions under the action of the spring 16, causing the two auxiliary pillows 7 to slide away from each other, thus no longer clamping the patient's head. Since multi-stage telescopic tubes 17 are installed on both sides of the sliding block 9, the sliding block 9 will move along with the multi-stage telescopic tubes 17 when it moves. At this time, when one of the multi-stage telescopic tubes 17 is sliding and stretched, it will draw in external air through the air inlet pipe 20 and fill the multi-stage telescopic tube 17 with air through several round holes. When the sliding block 9 is reset, it will squeeze the previously stretched multi-stage telescopic tube 17, causing the air in the multi-stage telescopic tube 17 to be blown into the slide groove 8 through the air outlet pipe 21. When the air is blown out, it will be dispersed by several arc-shaped guide plates 23, thereby expanding the blowing range and achieving the function of efficiently cleaning the slide groove 8. The filter screen 22 is installed to reduce the occurrence of impurities entering the air outlet pipe 21 and causing blockage. The blown gas assists the bottom plate 18 in cleaning the inside of the slide 8, and the impurities in the slide 8 are discharged through the inclined discharge chute 19, thereby achieving the function of cleaning the slide 8 and preventing impurities in the slide 8 from affecting the normal sliding of the sliding block 9.

[0032] It should be noted that since there are two multi-stage telescopic tubes 17, when one multi-stage telescopic tube 17 is stretched, the other multi-stage telescopic tube 17 will shrink accordingly. The working principle is the same, so it will not be described again.

[0033] A protective net 26 is fixedly installed at the port of the discharge chute 19, and a rubber block is fixedly installed inside the discharge chute 19 near the protective net 26. A groove 28 is inclined and connected to the inside of the discharge chute 19. A slider 29 is slidably connected inside the groove 28. A multi-stage sliding tube 30 is fixedly installed between the groove 28 and the slider 29. The multi-stage sliding tube 30 is composed of several hollow round tubes that are sealed and slidably connected, and the round tubes are connected by round holes. A hollow elastic block 27 is fixedly installed inside the chute 8, and the elastic block 27 is connected to the multi-stage sliding tube 30 by a connecting pipe 31.

[0034] Specifically, a rectangular plate 32 is fixedly mounted on one side of the slider 29, and several conical unblocking rods 33 are fixedly mounted on one side of the rectangular plate 32. Two symmetrically arranged, arc-shaped pressure plates 34 are fixedly mounted on one side of the base plate 18, and several rotating columns 35 are rotatably connected to the sides of the two pressure plates 34 that are close to each other. During operation, the protective net 26 reduces the entry of external impurities into the discharge chute 19. When larger impurities accumulate in the discharge chute 19, rotating the protective net 26 causes it to rotate and deform the rubber stop, thus opening the discharge chute 19 and facilitating the discharge of internal impurities. After prolonged use, the mesh of the protective net 26 is easily clogged with dust, making it difficult for fine dust and impurities to be discharged. In this case, when the base plate 18 resets, it uses the arc-shaped pressure plate 34 and several rotating columns 35 to press the elastic block 27. The pressure plate 34 is designed to be arc-shaped so that after pressing the elastic block 27, there is still a gap between the base plate 18 and the inner wall of the chute 8, allowing the elastic block 27 to deform and preventing excessive compression that could damage it. When the elastic block 27 is compressed, the gas inside enters the multi-stage sliding tube 30 through the connecting pipe 31 and fills several round tubes through the built-in holes. At this time, the round tubes in the multi-stage sliding tube 30 are pushed by the injected gas and begin to slide, thus moving the slider 29, rectangular plate 32, and unblocking rods 33 towards the protective net 26. The unblocking rods 33 are inserted into the holes of the protective net 26 to unblock the block. The protective net 26 does not rotate at this time because it is blocked by a stop block, so the unblocking rods 33 do not rotate when inserted into the protective net 26. After the above operation is completed, the base plate 18 resets and no longer compresses the elastic block 27. The gas in the multi-stage sliding tube 30 is returned to the elastic block 27 through the connecting pipe 31, thus facilitating subsequent reuse.

[0035] Working principle: When the patient lies on the examination bed 2 of the MRI machine 1, a disposable nursing pad is first laid on the headrest base 6, and the two sides of the disposable nursing pad are inserted into the rectangular groove 24 and fixed with Velcro 25. Then, several straps 3 are used to fix the patient to the examination bed 2, with one end of the strap 3 passing through the connecting plate 4 and fixed with positioning bolts 5, thereby helping to fix the patient to the examination bed 2. At this time, the patient's head rests on the headrest base 6, and the rounded corners 15 on the headrest base 6 are to facilitate a transition when the headrest base 6 comes into contact with the patient's head, thereby providing protection and avoiding diaphragmatic injury to the patient. At the same time, a flexible pad 14 is installed on the headrest base 6 to provide cushioning protection. At this time, the sliding block 9 in the sliding groove 8 moves the sliding block 9, carrying the auxiliary pillow 7, closer to the patient's head. When the auxiliary pillow 7 moves to the appropriate position, it stops, and then the positioning rod 12 is inserted into the corresponding through hole 11 and then into the positioning hole 10 for fixation, thereby fixing the sliding block 9 and the auxiliary pillow 7. Two auxiliary pillows 7 are used to temporarily clamp and fix the patient's head. The auxiliary pillows 7 are flexible, so they will not cause compression injury to the patient.

[0036] When the patient finishes the examination and needs to leave the examination bed, the positioning rod 12 is pulled out from the positioning hole 10. At this time, the auxiliary pillow 7 and the sliding block 9 will slide back to their original positions under the action of the spring 16, causing the two auxiliary pillows 7 to slide away from each other, thus no longer clamping the patient's head. Since multi-stage telescopic tubes 17 are installed on both sides of the sliding block 9, the sliding block 9 will move along with the multi-stage telescopic tubes 17 when it moves. At this time, when one of the multi-stage telescopic tubes 17 is sliding and stretched, it will draw in external air through the air inlet pipe 20 and fill the multi-stage telescopic tube 17 with air through several round holes. When the sliding block 9 is reset, it will squeeze the previously stretched multi-stage telescopic tube 17, causing the air in the multi-stage telescopic tube 17 to be blown into the slide groove 8 through the air outlet pipe 21. When the air is blown out, it will be dispersed by several arc-shaped guide plates 23, thereby expanding the blowing range and achieving the function of efficiently cleaning the slide groove 8. The filter screen 22 is installed to reduce the possibility of impurities entering the air outlet pipe 21 and causing blockage. The blown gas assists the bottom plate 18 in cleaning the inside of the slide 8, and the impurities in the slide 8 are discharged through the inclined discharge chute 19, thereby achieving the function of cleaning the slide 8 and preventing impurities in the slide 8 from affecting the normal sliding of the sliding block 9.

[0037] The protective net 26 serves to reduce the entry of external impurities into the discharge chute 19. When larger impurities accumulate in the discharge chute 19, rotating the protective net 26 causes it to rotate and deform the rubber stop, thereby opening the discharge chute 19 and facilitating the discharge of internal impurities. After prolonged use, the mesh of the protective net 26 is easily clogged with dust, making it difficult for fine dust and impurities to be discharged. In this case, when the base plate 18 resets, it uses the arc-shaped pressure plate 34 and several rotating columns 35 to press the elastic block 27. The pressure plate 34 is designed to be arc-shaped so that after pressing the elastic block 27, there is still a gap between the base plate 18 and the inner wall of the chute 8, allowing the elastic block 27 to deform and preventing excessive compression that could damage it. When the elastic block 27 is compressed, the gas inside enters the multi-stage sliding tube 30 through the connecting pipe 31 and fills several round tubes through the built-in holes. At this time, the round tubes in the multi-stage sliding tube 30 are pushed by the injected gas and begin to slide, thus moving the slider 29, rectangular plate 32, and unblocking rods 33 towards the protective net 26. The unblocking rods 33 are inserted into the holes of the protective net 26 to unblock the block. The protective net 26 does not rotate at this time because it is blocked by a stop block, so the unblocking rods 33 do not rotate when inserted into the protective net 26. After the above operation is completed, the base plate 18 resets and no longer compresses the elastic block 27. The gas in the multi-stage sliding tube 30 is returned to the elastic block 27 through the connecting pipe 31, thus facilitating subsequent reuse.

[0038] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0039] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nuclear magnetic resonance detection apparatus comprising a nuclear magnetic resonance device (1) and a detection bed (2) on which a patient lies down; characterized in that: Also include: The binding (3) has several and one end is fixedly connected with the detection bed (2), one end of the detection bed (2) is fixedly installed with several "U" shaped connecting plates (4), the connecting plate (4) is threadedly connected with the positioning bolt (5), one end of the positioning bolt (5) and the binding (3) are abutted, and the headrest base (6) is fixedly installed on the detection bed (2), and the detection bed (2) is provided with two symmetrical flexible auxiliary pillows (7), and the two auxiliary pillows (7) can be adjusted. The headrest base (6) is provided with a rectangular slot (24) on the two sides, and the rectangular slot (24) is fixedly installed with a magic tape (25) inside. The headrest base (6) is provided with two symmetrical sliding grooves (8), the sliding groove (8) is slidably connected with a sliding block (9), and the sliding block (9) is fixedly connected with the auxiliary pillow (7) on the top.

2. A nuclear magnetic resonance detection apparatus according to claim 1, wherein: One side of the sliding block (9) is provided with a positioning hole (10), one side of the headrest base (6) is provided with a plurality of transversely arranged through holes (11), and the through hole (11) is threadedly connected with a positioning rod (12). The surface of the positioning rod (12) is fixedly provided with a plurality of sleeve rings (13), and the sleeve ring (13) is made of rubber material. The headrest base (6) is fixedly installed with a gasket (14) made of flexible material, and one end of the headrest base (6) is provided with a round corner (15).

3. A nuclear magnetic resonance detection apparatus as defined in claim 1, wherein: The spring (16) is fixedly connected with the sliding block (9) at one end.

4. A nuclear magnetic resonance detection apparatus as defined in claim 2, wherein: The sliding groove (8) is fixedly installed with two multi-stage telescopic pipes (17), and the multi-stage telescopic pipe (17) is fixedly connected with the sliding block (9) at one end.

5. A nuclear magnetic resonance detection apparatus as defined in claim 2, wherein: The multi-stage telescopic pipe (17) is composed of a plurality of hollow plates slidably connected. The bottom of the sliding block (10) is fixedly installed with a bottom plate (18), and the headrest base (6) is provided with a plurality of discharge grooves (19) communicated with the sliding groove (8), and the discharge groove (19) is inclined. The plurality of hollow plates in the multi-stage telescopic pipe (17) are sealingly connected, and the plurality of sealed plates are connected through circular holes, the top of the multi-stage telescopic pipe (17) is fixedly installed with an air inlet pipe (20) connected with the inside and provided with a one-way valve, and the bottom of the multi-stage telescopic pipe (17) is fixedly installed with an air outlet pipe (21) connected with the inside and provided with a one-way valve.

6. A nuclear magnetic resonance detection apparatus as defined in claim 5, wherein: The inside of the air outlet pipe (21) is fixedly installed with a filter screen (22), and one side of the filter screen (22) is fixedly installed with a plurality of arc-shaped guide plates (23). The discharge groove (19) is fixedly installed with a protective net (26) at the port, and the discharge groove (19) is fixedly installed with a rubber stop block near the protective net (26).

7. A nuclear magnetic resonance detection apparatus as defined in claim 5, wherein: ​ 8. A nuclear magnetic resonance detection apparatus as defined in claim 7, wherein: The headrest base (6) is internally provided with a groove (28) which is obliquely arranged and connected with the inside of the discharge chute (19), the inside of the groove (28) is slidably connected with a sliding block (29), and a multi-stage sliding pipe (30) is fixedly installed between the groove (28) and the sliding block (29), the multi-stage sliding pipe (30) is composed of a plurality of hollow circular pipes which are sealingly and slidably connected, and the plurality of circular pipes are connected with each other through circular holes; The sliding chute (8) is fixedly installed with a hollow elastic block (27), and the elastic block (27) and the multi-stage sliding pipe (30) are connected with each other through a connecting pipe (31).

9. A nuclear magnetic resonance detection apparatus as defined in claim 8, wherein: One side of the sliding block (29) is fixedly installed with a rectangular plate (32), and one side of the rectangular plate (32) is fixedly installed with a plurality of tapered dredging rods (33).

10. A nuclear magnetic resonance detection apparatus as defined in claim 8, wherein: One side of the bottom plate (18) is fixedly installed with two symmetrically arranged arc-shaped pressing plates (34), and a plurality of rotating columns (35) are rotatably connected to the sides of the two pressing plates (34) which are close to each other.

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