A medical imaging examination couch

Abstract

The application relates to the field of medical instruments, and discloses a medical image examination bed which comprises a base, a telescopic rod installed on the top of the base, a supporting table installed on the telescopic end of the telescopic rod, a sliding seat fixedly installed on the top of the supporting table, a fixed block slidingly installed on the inner side of the sliding seat, a pressing roller two and a pressing roller three rotationally installed on the left side of the inner wall of the supporting table, a supporting plate placed on the top of the base, and a pressing roller one fixedly installed on the left side of the top of the supporting plate. The device increases the friction force between the pressing roller two, the pressing roller three and the conveying belt through the counterweight of the pressing roller one, the supporting plate and the counterweight block, uses a worm and a gear one to provide additional friction resistance for the pressing roller three, stops the pressing roller three when the fixed block moves to the right, rotates the pressing roller two, drives part of a belt one to the upper side of the fixed block, maintains the relative stillness between the fixed block and the belt three, and guarantees the smooth movement of a patient.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a medical imaging examination bed. Background Technology

[0002] In existing medical imaging examination tables, translation functionality typically relies on a movable flat or sliding plate structure that can extend or slide between the main body of the examination table and the target bed position (such as the table in a CT scanner gantry). These translation devices are generally motor-driven, achieving smooth movement via guide rails or slides, and are designed to accurately and smoothly transfer the patient from their initial position to the designated examination location under the imaging equipment.

[0003] However, a common technical challenge in the clinical use of such translational structures is the retraction of the slide from under the patient after the examination. Since the patient's body is typically only in indirect contact with the slide surface through a sheet or padding, the static friction is often greater than the dynamic friction. During rapid or sudden retraction, relative sliding easily occurs between the slide surface and the patient's back (especially areas of high pressure such as the shoulders, back, and buttocks). This sliding friction not only causes unnecessary retraction of the patient's body, affecting the accuracy of repositioning after the examination, but may also cause shearing damage to the patient's skin and subcutaneous tissue. This risk is particularly pronounced for certain patient groups. For example, critically ill or immobile patients often remain bedridden for extended periods, resulting in fragile skin prone to pressure sores (bedsores); postoperative patients may have unhealed surgical incisions or drainage tubes; and burn or severely traumatized patients often have open wounds or dressings. The friction and shearing action generated during slide retraction can easily lead to skin abrasions, dressing displacement, and even secondary wound damage or increased pain, hindering the recovery process.

[0004] Currently, some improved designs attempt to reduce friction by increasing the smoothness of the translation plate surface, using low-friction materials, or laying sliding mats. However, these measures often cannot completely eliminate shear forces, and accidental dragging may still occur when the plate is retracted due to uneven patient weight distribution or slight body position changes. In addition, some devices use segmented translation plates or adjustable side rails to try to reduce the impact, but the structural complexity and cost also increase accordingly, without fundamentally solving the problem of relative movement between the translation plate and the patient's body surface.

[0005] Therefore, the translation function of existing medical imaging examination tables still presents a contradiction between convenience and patient safety. There is an urgent need for a new mechanism or buffer solution that can effectively avoid reverse friction with the patient or reduce shear force transmission when the translation plate is withdrawn, so as to achieve truly smooth and non-invasive patient transfer. Summary of the Invention

[0006] This application proposes a medical imaging examination bed with the advantage of stable transport, in order to solve the problems in the prior art.

[0007] To achieve the above objectives, this application adopts the following technical solution: a medical imaging examination bed, including a base, and further comprising: A telescopic rod is installed on the top of the base. A support platform is installed at the telescopic end of the telescopic rod. A slide is fixedly installed on the top of the support platform. A fixing block is slidably installed on the inner side of the slide. Pressure roller 2 and pressure roller 3 are rotatably installed on the left side of the inner wall of the support platform. A support plate is placed on the top of the base. Pressure roller 1 is fixedly installed on the left side of the top of the support plate. A conveyor belt is connected to the outer surface of pressure roller 1, pressure roller 2, pressure roller 3 and the fixing block. A counterweight is installed on the top of the support plate. Pressure roller 1 is located directly below pressure roller 2. The front and rear sides of the fixed block are fixedly connected to the sliding plate, the bottom of the sliding plate is fixedly installed with a rack, the right side of the bottom of the slide block is installed with a motor, and the output shaft of the motor is fixedly installed with a second gear located inside the slide block, the second gear meshing with the rack; Gear 1 is fixedly installed at the front end of the pressure roller 3, and a worm gear is installed on the front side of the inner wall of the support platform, and the worm gear meshes with gear 1; This device, equipped with a fixed block and a conveyor belt, avoids generating leftward friction on the patient's back when the fixed block is withdrawn after moving the patient to the right onto the bed, thus ensuring smooth transport. To achieve this, the device uses a support platform and a sliding seat to provide sliding support for the fixed block. A motor, gear two, and a rack drive the fixed block to move horizontally. Pressure rollers two and three are rotatably mounted inside the support platform, with pressure roller one located directly below pressure roller two providing counterweight. A conveyor belt is fitted around pressure rollers two, three, one, and the outside of the fixed block. When the fixed block moves to the right, the counterweight from pressure roller one, the support plate, and the fixed block increases the friction between pressure rollers two and three and the conveyor belt. A worm gear and gear one provide additional frictional resistance to pressure roller three. When the fixed block moves to the right, pressure roller three stops, pressure roller two rotates, and part of belt one is pulled above the fixed block, maintaining relative stillness between the fixed block and belt three, ensuring smooth patient movement.

[0008] Then, when the fixed block extends to its maximum distance to the right, the motor reverses and the fixed block retracts. At this time, belt three needs to move to the right relative to the fixed block to counteract the leftward displacement of the fixed block, keeping the patient relatively stationary with belt three, thus ensuring the patient lands stably on the bed. To achieve this, the worm gear is activated, driving gear one and pressure roller three to rotate. At this time, the entire conveyor belt will circulate around the outer surfaces of pressure roller one, pressure roller two, pressure roller three, and the fixed block. The speed at which the conveyor belt moves to the right on the upper surface of the fixed block is equal to the speed at which the fixed block moves to the left to reset. In this way, belt three forms a relative stationary position between the patient and the bottom of the patient. When the fixed block resets to the left, it will not move the patient along with it, thus effectively avoiding the effect of the fixed block pulling the patient to the left when it retracts.

[0009] Preferably, the top of the base is also fixedly installed with two sets of guide cylinders symmetrically distributed front and back. The guide cylinders are movably sleeved with guide columns. The top of the guide columns is fixedly connected to the support platform. The guide cylinders are adapted to be fitted inside the support plate.

[0010] Preferably, the diameter of the second pressure roller is equal to the diameter of the third pressure roller, the diameter of the first pressure roller is greater than the diameter of the second pressure roller, the third pressure roller is located to the lower right of the second pressure roller, a transmission groove is provided in the middle of the fixed block, and the conveyor belt abuts against the top of the fixed block and the inside of the transmission groove respectively.

[0011] Preferably, a protective cover is fixedly connected to the top of the base, and the protective cover is higher than the pressure roller and the conveyor belt.

[0012] Preferably, the conveyor belt consists of belt one, belt two, belt three and belt four. Belt three abuts against the upper surface of the fixed block, belt four abuts against the inside of the transmission groove, belt one is located to the left of pressure roller one and pressure roller two, and belt two is located to the right of pressure roller one and pressure roller two.

[0013] Preferably, the slides are configured in two sets and symmetrically distributed on the front and rear sides of the top of the support platform. The slide plate is slidably installed on the inner wall of the slide, and the rack is located inside the front slide.

[0014] Preferably, the length of the slide plate and the rack is greater than the length of the fixing block, and the right side of the fixing block has a semi-circular transition.

[0015] Preferably, the second and third pressure rollers rotate at the same speed and in opposite directions, and the contact areas between the second and third pressure rollers and the conveyor belt are equal.

[0016] Preferably, both ends of the first, second and third pressure rollers are fixedly connected to limit rings, and both sides of the conveyor belt abut against the limit rings.

[0017] The beneficial effects of this invention are as follows: 1. This device, equipped with a fixed block and a conveyor belt, avoids generating leftward friction on the patient's back when the fixed block is withdrawn after moving the patient to the right onto the bed, thus ensuring smooth transport. To achieve this, the device uses a support platform and a sliding seat to provide sliding support for the fixed block. A motor, gear two, and a rack drive the fixed block to move horizontally. Pressure rollers two and three are rotatably mounted inside the support platform, and pressure roller one, located directly below pressure roller two, provides counterweight. A conveyor belt is fitted around pressure rollers two, three, one, and the outside of the fixed block. When the fixed block moves to the right, the counterweight of pressure roller one, the support plate, and the fixed block increases the friction between pressure rollers two and three and the conveyor belt. A worm gear and gear one provide additional frictional resistance to pressure roller three. When the fixed block moves to the right, pressure roller three stops, pressure roller two rotates, and part of belt one is pulled above the fixed block, maintaining relative stillness between the fixed block and belt three, ensuring smooth patient movement.

[0018] 2. Then, when the fixed block extends to its maximum distance to the right, the motor is reversed and the fixed block is retracted. At this time, belt three needs to move to the right relative to the fixed block to counteract the leftward displacement of the fixed block, keeping the patient and belt three relatively stationary, thus ensuring the patient lands stably on the bed. To achieve this, the worm gear is activated, driving gear one and pressure roller three to rotate. At this time, the entire conveyor belt will rotate cyclically around the outer surfaces of pressure roller one, pressure roller two, pressure roller three, and the fixed block. The speed at which the conveyor belt moves to the right on the upper surface of the fixed block is equal to the speed at which the fixed block moves to the left to reset. In this way, belt three forms a relative stationary position between the patient and the bottom of the patient. When the fixed block resets to the left, it will not cause the patient to move with it, thus effectively avoiding the effect of the fixed block pulling the patient to the left when it retracts. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0020] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a partial separation diagram of the overall structure of the present invention; Figure 2 This is a side perspective view of the overall structure of the present invention; Figure 3 This is a front view diagram of the overall structure of the present invention; Figure 4 This is a side view of the overall structure of the present invention; Figure 5 For the present invention Figure 4Enlarged schematic diagram of the structure at point A; Figure 6 This is a front sectional view of the overall structure of the present invention; Figure 7 This is a side sectional view of the overall structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B; Figure 9 This is a schematic diagram of the internal cross-section of the support platform and slide of the present invention; Figure 10 For the present invention Figure 9 Enlarged schematic diagram of the structure at point C; Figure 11 For the present invention Figure 9 An enlarged schematic diagram of the structure at point D.

[0021] The components include: 1. Base; 2. Protective cover; 3. Telescopic rod; 4. Support platform; 5. Slide seat; 6. Conveyor belt; 61. Belt 1; 62. Belt 2; 63. Belt 3; 64. Belt 4; 7. Pressure roller 1; 8. Pressure roller 2; 9. Pressure roller 3; 10. Support plate; 11. Fixing block; 12. Limiting ring; 13. Guide cylinder; 14. Guide column; 15. Counterweight block; 16. Gear 1; 17. Worm gear; 18. Slide plate; 19. Rack; 20. Motor; 21. Gear 2; 22. Transmission groove. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] Please see Figures 1-11 This embodiment discloses a medical imaging examination bed, including a base 1, and further comprising: Telescopic rod 3 is installed on the top of base 1. Support platform 4 is installed at the telescopic end of telescopic rod 3. Slide 5 is fixedly installed on the top of support platform 4. Fixing block 11 is slidably installed on the inner side of slide 5. Pressure roller 2 8 and pressure roller 3 9 are rotatably installed on the left side of the inner wall of support platform 4 respectively. Support plate 10 is placed on the top of base 1. Pressure roller 1 7 is fixedly installed on the left side of the top of support plate 10. Conveyor belt 6 is connected to the outer surface of pressure roller 1 7, pressure roller 2 8, pressure roller 3 9 and fixing block 11. Counterweight block 15 is installed on the top of support plate 10. Pressure roller 1 7 is located directly below pressure roller 2 8. Slide plates 18 are fixedly connected to both the front and rear sides of the fixed block 11. A rack 19 is fixedly installed at the bottom of the slide plate 18. A motor 20 is installed on the right side of the bottom of the slide block 5. A gear 21 located inside the slide block 5 is fixedly installed on the output shaft of the motor 20. The gear 21 meshes with the rack 19. Gear 16 is fixedly installed at the front end of the pressure roller 39, and worm 17 is installed on the front side of the inner wall of the support platform 4. Worm 17 meshes with gear 16. This device, equipped with a fixed block 11 and a conveyor belt 6, avoids generating leftward friction on the patient's back when moving the patient to the right onto the bed and then retracting the fixed block 11, thus providing a smooth transport experience. To achieve this, the device uses a support platform 4 and a slide block 5 to provide sliding support for the fixed block 11. A motor 20, gear 21, and rack 19 drive the fixed block 11 to translate. Pressure rollers 2 and 3 are rotatably mounted inside the support platform 4, and a pressure roller 7 located directly below pressure roller 2 provides counterweight. The device also features a conveyor belt 6. The conveyor belt 6 is attached to the outside of pressure roller 2 8, pressure roller 3 9, pressure roller 1 7 and fixed block 11. When fixed block 11 moves to the right, the friction between pressure roller 2 8, pressure roller 3 9 and conveyor belt 6 is increased by the counterweight of pressure roller 1 7, support plate 10 and counterweight block 15. The worm gear 17 and gear 16 provide additional frictional resistance to pressure roller 3 9. When fixed block 11 moves to the right, pressure roller 3 9 stops, pressure roller 2 8 rotates, and a portion of belt 1 61 is driven above fixed block 11, maintaining the relative stillness between fixed block 11 and belt 3 63, ensuring smooth patient movement.

[0024] Then, when the fixed block 11 extends to the right to its maximum distance, the reverse motor 20 reverses and retracts the fixed block 11. At this time, the belt 63 needs to move to the right relative to the fixed block 11 to counteract the leftward displacement of the fixed block 11, keeping the patient and the belt 63 relatively stationary, thus ensuring the patient lands stably on the bed. To achieve this, the worm gear 17 is activated, driving the gear 16 and the pressure roller 9 to rotate. At this time, the entire conveyor belt 6 will rotate cyclically around the pressure roller 7, pressure roller 8, pressure roller 9 and the outer surface of the fixed block 11. The speed at which the conveyor belt 6 moves to the right on the upper surface of the fixed block 11 is equal to the speed at which the fixed block 11 moves to the left to reset. In this way, the belt 63 forms a relative stationary position between the patient and the bottom of the patient. When the fixed block 11 resets to the left, it will not move the patient along with it, thus effectively avoiding the effect of the fixed block 11 pulling the patient to the left when it retracts.

[0025] In this embodiment, two sets of guide cylinders 13 symmetrically distributed front and back are fixedly installed on the top of the base 1. A guide post 14 is movably sleeved inside the guide cylinder 13. The top of the guide post 14 is fixedly connected to the support platform 4. The guide cylinder 13 is adapted to be fitted inside the support plate 10. like Figure 7 As shown, this device uses the telescopic rod 3 to drive the support platform 4 and the fixed block 11 to achieve the lifting function. In order to ensure the smooth lifting of the support platform 4 and the fixed block 11, a guide cylinder 13 and a guide column 14 are provided to provide the guiding function. When the pressure roller 7 drives the support plate 10 and the counterweight block 15 to move upward, it can provide the guiding function for the support plate 10 through the guide cylinder 13.

[0026] In this embodiment, the diameter of pressure roller 2 8 is equal to the diameter of pressure roller 3 9, the diameter of pressure roller 1 7 is greater than the diameter of pressure roller 2 8, pressure roller 3 9 is located to the lower right of pressure roller 2 8, a transmission groove 22 is provided in the middle of the fixed block 11, and the conveyor belt 6 abuts against the top of the fixed block 11 and the inside of the transmission groove 22 respectively. like Figure 6 As shown, since the diameters of pressure roller 2 8 and pressure roller 3 9 are equal, their friction with the conveyor belt 6 is basically equal. In order to ensure that pressure roller 3 9 remains stationary when the fixed block 11 moves to the right, a gear 16 is installed at the front end of pressure roller 3 9 and meshes with the worm gear 17. The unidirectional transmission property of gear 16 and worm gear 17 ensures that belt 61 can move upward to above the fixed block 11 and avoids relative displacement between belt 3 63 and fixed block 11 during this stage.

[0027] In this embodiment, a protective cover 2 is fixedly connected to the top of the base 1, and the protective cover 2 is higher than the pressure roller 8 and the conveyor belt 6. The protective cover 2 is used to protect the outer part of the belt 61, and therefore needs to be higher than the pressure roller 8 and the conveyor belt 6.

[0028] In this embodiment, the conveyor belt 6 is composed of belt 61, belt 62, belt 63 and belt 64. Belt 63 abuts against the upper surface of the fixing block 11, and belt 64 abuts against the inside of the transmission groove 22. Belt 61 is located to the left of pressure roller 7 and pressure roller 8, and belt 62 is located to the right of pressure roller 7 and pressure roller 8. like Figure 6 As shown, the conveyor belt 6 consists of belt 1 61, belt 2 62, belt 3 63 and belt 4 64. The design of its position distribution allows the conveyor belt 6 as a whole to ensure that belt 3 63 is relatively stationary or relatively moving with the fixed block 11 by rotating, thereby achieving the stability of the fixed block 11 when translating the patient, and minimizing the impact of the fixed block 11 on the patient when it retracts.

[0029] In this embodiment, the slide blocks 5 are set in two groups and are symmetrically distributed on the front and rear sides of the top of the support platform 4. The slide plate 18 is slidably installed on the inner wall of the slide block 5, and the rack 19 is located inside the front slide block 5. like Figure 1As shown, the fixed block 11 is slidably mounted on the inner wall of the slide block 5 via the slide plate 18, and is driven to move by the motor 20, gear 21 and rack 19.

[0030] In this embodiment, the lengths of the slide plate 18 and the rack 19 are greater than the length of the fixing block 11, and the right side of the fixing block 11 has a semi-circular transition. The lengths of the slide plate 18 and the rack 19 need to be longer than the fixing block 11, mainly to ensure that the fixing block 11 can be fully extended and placed on the hospital bed. It should be noted that the bottom of the fixing block 11 abuts against the hospital bed and is supported by part of the force from the hospital bed. Therefore, there are no problems such as damage to the slide plate 18 caused by uneven force when the fixing block 11 extends outward.

[0031] In this embodiment, the rotation speeds of pressure roller 2 8 and pressure roller 3 9 are equal and their directions are opposite, and the contact areas between pressure roller 2 8, pressure roller 3 9 and conveyor belt 6 are equal. like Figure 6 As shown, pressure roller 8 and pressure roller 9 abut against the inner and outer sides of the conveyor belt 6 respectively, causing them to turn in opposite directions, but the frictional force they receive from the conveyor belt 6 is equal.

[0032] In this embodiment, the two ends of pressure roller 1 7, pressure roller 2 8 and pressure roller 3 9 are all fixedly connected to limit rings 12, and both sides of the conveyor belt 6 abut against the limit rings 12. like Figure 1 As shown, the limiting ring 12 can limit and guide the conveyor belt 6 outside the pressure roller 7, pressure roller 8 and pressure roller 9 to prevent the conveyor belt 6 from running off-track.

[0033] Working principle: When this device is in operation, firstly, the patient lies flat on top of the fixed block 11, with their body in direct contact with the belt 63. Medical staff then push the patient to the imaging examination room area. After the imaging examination is completed, for patients who are unable to move, medical staff can directly push the examination bed to the patient's ward and begin the translation operation. First, such as Figure 6 , Figure 9As shown, pressure roller 7 exerts equal downward tension on belts 61 and 62 of conveyor belt 6 via support plate 10 and counterweight 15. Then, conveyor belt 6 begins to generate friction with pressure rollers 8 and 9 and the fixed block 11. Since pressure roller 9 is driven by gear 16 and worm gear 17, it cannot rotate in the reverse direction. Therefore, the frictional resistance experienced by pressure roller 9 is greater than that of pressure roller 8. Motor 20 is started, driving gear 21 to rotate forward, which in turn drives the conveyor belt 6 through meshing with rack 19. As the fixed block 11 moves to the right, the belts 62 and 64 are prevented from rotating by the friction of the pressure roller 9. The fixed block 11 can pull the belt 61 and the pressure roller 7 upward, and drive the pressure roller 8 to rotate clockwise. It moves to the right through the belt 63 (Note: At this time, the part of the belt 63 that was originally against the top of the fixed block 11 remains relatively stationary with the fixed block 11). This allows the fixed block 11 to extend to the right, and the fixed block 11 can move the patient to the top of the bed. Then, the fixed block 11 retracts. At this time, the motor 20 reverses and drives the fixed block 11 to move to the left. At the same time, the worm gear 17 is activated, which drives the gear 16 and the pressure roller 9 to rotate. This causes the entire conveyor belt 6 to circulate along the pressure roller 8, the fixed block 11, the transmission groove 22, the pressure roller 9, and the pressure roller 7. (Note: At this time, the belt 63 part that was originally abutting the top of the fixed block 11 has a relative displacement with the fixed block 11.) The speed at which the conveyor belt 6 moves to the right on the upper surface of the fixed block 11 is equal to the speed at which the fixed block 11 moves to the left to reset. In this way, the belt 63 forms a relatively stationary position between the bottom of the patient and the patient. When the fixed block 11 resets to the left, it will not cause the patient to move synchronously, ensuring that the patient can be smoothly transferred to the bed.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A medical imaging examination bed, comprising a base (1), characterized in that, Also includes: Telescopic rod (3) is installed on the top of base (1). A support platform (4) is installed at the telescopic end of the telescopic rod (3). A slide (5) is fixedly installed on the top of the support platform (4). A fixing block (11) is slidably installed on the inner side of the slide (5). A pressure roller two (8) and a pressure roller three (9) are rotatably installed on the left side of the inner wall of the support platform (4). A support plate (10) is placed on the top of the base (1). A pressure roller one (7) is fixedly installed on the left side of the top of the support plate (10). A conveyor belt (6) is connected to the outer surface of the pressure roller one (7), pressure roller two (8), pressure roller three (9) and fixing block (11). A counterweight block (15) is installed on the top of the support plate (10). The pressure roller one (7) is located directly below the pressure roller two (8). The front and rear sides of the fixed block (11) are fixedly connected with sliding plates (18), the bottom of the sliding plate (18) is fixedly installed with a rack (19), the right side of the bottom of the slide block (5) is installed with a motor (20), the output shaft of the motor (20) is fixedly installed with a gear two (21) located inside the slide block (5), and the gear two (21) and the rack (19) mesh with each other; The front end of the pressure roller three (9) is fixedly installed with gear one (16), and the front side of the inner wall of the support platform (4) is installed with worm gear (17), which meshes with gear one (16).

2. The medical imaging examination bed according to claim 1, characterized in that, The top of the base (1) is also fixedly installed with two sets of guide cylinders (13) symmetrically distributed front and back. The guide cylinder (13) is movably sleeved with a guide column (14). The top of the guide column (14) is fixedly connected to the support platform (4). The guide cylinder (13) is adapted to be fitted inside the support plate (10).

3. A medical imaging examination bed according to claim 2, characterized in that, The diameter of the second pressure roller (8) is equal to the diameter of the third pressure roller (9), the diameter of the first pressure roller (7) is greater than the diameter of the second pressure roller (8), the third pressure roller (9) is located to the lower right of the second pressure roller (8), the middle of the fixed block (11) is provided with a transmission groove (22), and the conveyor belt (6) abuts against the top of the fixed block (11) and the inside of the transmission groove (22).

4. A medical imaging examination bed according to claim 3, characterized in that, A protective cover (2) is fixedly connected to the top of the base (1), and the protective cover (2) is higher than the pressure roller (8) and the conveyor belt (6).

5. A medical imaging examination bed according to claim 4, characterized in that, The conveyor belt (6) consists of belt one (61), belt two (62), belt three (63) and belt four (64). Belt three (63) abuts against the upper surface of the fixed block (11), and belt four (64) abuts against the inside of the transmission groove (22). Belt one (61) is located to the left of pressure roller one (7) and pressure roller two (8), and belt two (62) is located to the right of pressure roller one (7) and pressure roller two (8).

6. A medical imaging examination bed according to claim 5, characterized in that, The slides (5) are arranged in two groups and are symmetrically distributed on the front and rear sides of the top of the support platform (4). The slide plate (18) is slidably installed on the inner wall of the slide (5). The rack (19) is located inside the front slide (5).

7. A medical imaging examination bed according to claim 6, characterized in that, The lengths of the slide plate (18) and rack (19) are greater than the length of the fixing block (11), and the right side of the fixing block (11) has a semi-circular transition.

8. A medical imaging examination bed according to claim 7, characterized in that, The second (8) and the third (9) pressure rollers rotate at the same speed and turn in opposite directions. The contact area between the second (8) and the third (9) pressure rollers and the conveyor belt (6) is equal.

9. A medical imaging examination bed according to claim 8, characterized in that, The two ends of the pressure rollers 1 (7), 2 (8) and 3 (9) are all fixedly connected to the limiting rings (12), and both sides of the conveyor belt (6) are in contact with the limiting rings (12).

Images