Self-adaptive calibration device for patient body position of CT (Computed Tomography) scanning bed

Abstract

The invention belongs to the technical field of medical instruments, and particularly discloses a CT scanning bed patient body position self-adaptive calibration device which comprises a CT machine, and a scanning bed is arranged on one side of the CT machine and used for scanning a patient; the head support and the leg support are arranged at the two ends of the CT machine respectively and used for fixing the head and the feet of the patient. The second waist support is moved to the outer side of the second waist support through the adjusting structure, and the angle and height of the first waist support and the second waist support can be adjusted, so that the first waist support and the second waist support can be attached to the upper waist section, the middle waist section and the lower waist section of the elderly patient; compression of overall adjustment on the focus is avoided, meanwhile, the natural posture of the spine is maintained, the pain feeling of a patient during lying is relieved, and through separate use of the first waist support and the second waist support, the device can adapt to different crowds and meet diversified clinical requirements.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and specifically relates to a patient position adaptive calibration device for a CT scanning bed. Background Technology

[0002] The CT scan bed patient positioning adaptive calibration device is an intelligent auxiliary device integrated into the CT (computed tomography) machine's scanning bed. Its core function is to automatically identify the patient's body posture, quickly calibrate positioning deviations, and ensure precise alignment of the scanned area with the CT scan field, thereby improving image quality and examination efficiency. This device typically consists of three core units: a sensing module, a control module, and an execution module, forming a closed-loop control logic. It is mainly used for rapid positioning calibration in routine examinations such as head CT, chest CT, and abdominal CT; CT simulation positioning before radiotherapy for cancer patients to ensure precise matching of the target area and the irradiation field; and for trauma patients with impaired consciousness or limited limb movement, to quickly and safely complete safe and stable positioning fixation and calibration.

[0003] In existing technology, CT scanning beds use headrests, lumbar supports, and leg supports to calibrate the patient's position to the standard scanning position. However, during use, elderly patients with spinal degeneration may experience discomfort and inaccurate positioning due to the curvature of the lumbar support not conforming to the physiological curvature of the spine. This requires repeated adjustments or replacements of different lumbar supports. The poor adaptability and insufficient adjustment freedom of the lumbar supports hinder the improvement of work efficiency.

[0004] Upon receiving the command, it automatically completes the raising, lowering, translation, and rotation of the bed board, or the angle adjustment of the local support structure, to calibrate the patient's position to the standard scanning position.

[0005] Therefore, it is necessary to invent a patient position adaptive calibration device for a CT scanning bed to solve the above problems. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a patient positioning adaptive calibration device for a CT scanning bed, thereby resolving the issues raised in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a CT scanning bed patient position adaptive calibration device, including a CT scanner, wherein a scanning bed is provided on one side of the CT scanner for patient scanning; The headrest and leg rest are located at both ends of the CT scanner and are used to fix the patient's head and feet. The first lumbar support is located in the middle of the scanning bed and is used to fix the patient's waist. The second lumbar support is located on both sides of the first lumbar support. The bottom of the second lumbar support has an adjustment mechanism, which includes: The drive structure is located inside the scanning bed, and movable plates are provided on both sides of the drive structure to move the movable plates. The driving component is located between the movable plate and the second lumbar support, and is used to drive the second lumbar support to move.

[0008] Furthermore, there are two first waist supports, each with a mounting groove on both sides. The second waist support is located within the mounting groove. Both the first and second waist supports are symmetrically arranged around the center of the scanning bed. A cylinder is hinged to the side of the first waist support away from the center of the scanning bed. The bottom of the cylinder is fixedly connected to the scanning bed via a telescopic rod. A first electric push rod is fixedly connected to the bottom of the first waist support. A first motor is fixedly connected to the bottom of the first electric push rod for adjusting the angle and distance of the first waist support.

[0009] Furthermore, the driving component includes a second electric push rod and a second motor. The second motor is slidably connected to the top of the movable plate, and the output end of the second motor is fixedly connected to the second electric push rod. The second electric push rod passes through the top of the scanning bed and is inserted into the bottom of the second waist support. The movable plate and the second electric push rod are symmetrically arranged on both sides of the first electric push rod, and the two movable plates are connected by a first spring.

[0010] Furthermore, a fitting pad is fixedly connected to the contact surface of the first lumbar support. The fitting pad is made of slow rebound sponge and is used to fit the patient's waist.

[0011] Furthermore, the bottom of the scanning bed has two moving slots, both of which are cross-shaped. The moving slots are located at the bottom of the first waist support. A sliding groove is provided on the side of the moving slot away from the first waist support. A baffle is provided inside the moving slot. The two sides of the baffle are slidably connected to the inner walls of the sliding groove and the moving slot, respectively. The end of the baffle near the first waist support is located at the bottom of the first waist support and the second waist support, and the end of the baffle near the first waist support is rotatably connected to the top of the second electric push rod.

[0012] Furthermore, a groove is provided in the middle of the second lumbar support, and a limiting structure is provided inside the groove and on the first lumbar support. The limiting structure is located symmetrically at the center of the first lumbar support and is used to limit the position of the second lumbar support.

[0013] Furthermore, the limiting structure includes a third electric push rod, a protrusion, a movable block, and a limiting rod. The third electric push rod is fixedly connected to the inner wall of the first lumbar support. The third electric push rod is fixedly connected to the protrusion. A movable block is provided on one side of the protrusion. A limiting rod is fixedly connected to the movable block. The limiting rod passes through the groove, the second lumbar support, and is inserted into the first lumbar support.

[0014] Furthermore, one end of the third electric push rod extends into the groove along with the protrusion, and the moving block is slidably connected to the inner wall of the groove. The side of the moving block near the protrusion is an inclined surface, and the protrusion is located at the inclined surface. A fixing groove is opened on the side of the moving block away from the protrusion, and the limiting rod is located in the limiting groove. A second spring is sleeved on the limiting rod. One end of the second spring is fixedly connected to the inner wall of the limiting groove, and the other end is fixedly connected to the inner wall of the groove.

[0015] Furthermore, the groove is T-shaped, and a fixing component is provided at the bottom of the movable block and at the bottom end inside the groove. The fixing component includes a movable plate and a fixing rod. The movable plate is fixedly connected to the bottom of the movable block, and the fixing rod is fixedly connected to one side of the movable plate.

[0016] Furthermore, the top of the second electric push rod extends into the groove, and both sides of the moving plate are slidably connected to the inner wall of the bottom of the groove. The top of the second electric push rod is provided with a slot, and the fixing rod is inserted into the slot.

[0017] The technical effects and advantages of this invention are as follows: 1. This invention adjusts the structure to allow the second lumbar support to move to the outside of the first lumbar support, and can adjust the angle and height of the first and second lumbar supports, so that the first and second lumbar supports can fit the upper, middle and lower lumbar segments of elderly patients. By adjusting the lumbar support unit corresponding to the lesion segment, the overall adjustment can avoid compression of the lesion, while maintaining the natural posture of the spine and relieving the pain of patients when lying down. By using the first and second lumbar supports separately, it can be adapted to different groups of people and meet diverse clinical needs.

[0018] 2. By defining the structure and fixing components, this invention can improve the stability of the second lumbar support after it moves from the outside of the first lumbar support into the mounting groove. After the second lumbar support is fixed in the first lumbar support, the first and second lumbar supports can be disassembled, which facilitates the speed of replacing the first and second lumbar supports of different specifications, improves the efficiency of clinical adaptation, meets the diverse needs of patients, and enables the first and second lumbar supports to be cleaned and disinfected, reducing the risk of cross-infection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a structural diagram of the scanning bed according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the scanning bed according to an embodiment of the present invention; Figure 4 This is a structural diagram of the first lumbar support, baffle, and drive structure according to an embodiment of the present invention; Figure 5 This is a structural diagram of the first lumbar support, the second lumbar support, and the drive structure according to an embodiment of the present invention; Figure 6This is a structural diagram of the first lumbar support, the second lumbar support, and the second electric push rod according to an embodiment of the present invention; Figure 7 This is a diagram showing the internal structure of the groove in an embodiment of the present invention; Figure 8 This is a structural diagram of the second lumbar support, the limiting structure, and the fixing member according to an embodiment of the present invention; In the diagram: 1. CT scanner; 2. Scanning bed; 3. First lumbar support; 4. Second lumbar support; 5. Movable plate; 6. Cylinder; 7. Telescopic rod; 8. First electric push rod; 9. First motor; 10. Second electric push rod; 11. Third motor; 12. Rotating rod; 13. Second motor; 14. Movable block; 15. Push plate; 16. First spring; 17. Fitting pad; 18. Moving groove; 19. Baffle; 20. Third electric push rod; 21. Protrusion; 22. Moving block; 23. Limiting rod; 24. Second spring; 25. Moving plate; 26. Fixed rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] This invention provides a patient position adaptive calibration device for a CT scanning bed 2, such as... Figures 1 to 5 As shown, the system includes a CT scanner 1, a scanning bed 2, a headrest, leg supports, a first lumbar support 3, a second lumbar support 4, and an adjustment structure. The scanning bed 2 is located on one side of the CT scanner 1 for patient scanning. The headrest and leg supports are located at opposite ends of the CT scanner 1 to fix the patient's head and feet, restricting displacement at both ends of the body and assisting the lumbar support in calibrating the overall spinal position. The first lumbar support 3 is located in the middle of the scanning bed 2 to fix the patient's lumbar region. The second lumbar support 4 is located on both sides of the first lumbar support 3, directly conforming to the core area of ​​the patient's lumbar spine. An adjustment structure is located at the bottom of the second lumbar support 4, comprising a drive structure and a drive component. The drive structure is located inside the scanning bed 2 and drives... Movable plates 5 are provided on both sides of the structure for pushing the movable plates 5 to move. A driving component is provided between the movable plates 5 and the second waist support 4 for driving the second waist support 4 to move. There are two first waist supports 3. The first waist support 3 has a mounting groove on both sides. The second waist support 4 is located in the mounting groove. The first waist support 3 and the second waist support 4 are symmetrically arranged with respect to the center of the scanning bed 2. A cylinder 6 is hinged to the side of the first waist support 3 away from the center of the scanning bed 2. The bottom of the cylinder 6 is fixedly connected to the scanning bed 2 through a telescopic rod 7. A first electric push rod 8 is fixedly connected to the bottom of the first waist support 3. A first motor 9 is fixedly connected to the bottom of the first electric push rod 8 for adjusting the angle and distance of the first waist support 3.

[0022] The drive structure includes a third motor 11, a rotating rod 12, a guide rod, a movable block 14, and a push plate 15. The third motor 11 is fixedly connected to the top inner wall of the scanning bed 2. The output end of the first motor 9 is fixedly connected to the rotating rod 12. The bottom of the rotating rod 12 is rotatably connected to the inner wall of the scanning bed 2. The movable block 14 is threaded onto the rotating rod 12. Guide rods are movably connected to both ends of the movable block 14. The bottom of the guide rods is fixedly connected to the inner wall of the scanning bed 2. Push plates 15 are hinged to both sides of the movable block 14. The bottom end of the push plate 15 is hinged to the movable plate 15.

[0023] The third motor 11 drives the rotating rod 12 to rotate. The bottom of the rotating rod 12 is rotatably connected to the inner wall of the scanning bed 2 to ensure rotational stability. The movable block 14 on the rotating rod 12 is threadedly connected to the rotating rod 12, and both ends of the movable block 14 are sleeved on the guide rod. The guide rod restricts the rotation of the movable block 14. When the rotating rod 12 rotates, the moving block 22 moves downward, the pushing plate 15 opens to both sides, and pushes the movable plate 5 to move away from the center of the scanning bed 2. When the movable block 14 moves upward, the pushing plate 15 closes to the middle, and pulls the movable plate 5 to move closer to the center of the scanning bed 2. This allows the second lumbar support 4 to move out of or into the mounting slot, so that the first lumbar support 3 and the second lumbar support 4 can be used separately or together to adapt to different patients. The movable plate 5 drives the second lumbar support 4 to slide along the mounting slot of the first lumbar support 3 through the driving component until the second lumbar support 4 fits against both sides of the patient's waist, fills the gap, and completes the lumbar support. After the second lumbar support 4 completes horizontal support, the drive unit is activated and the first electric push rod 8 is extended or retracted, changing the vertical height of the first lumbar support 3 and the second lumbar support 4 respectively. For patients with unsupported lumbar regions, the first electric push rod 8 and the second electric push rod 10 of the drive unit cause the first lumbar support 3 and the second lumbar support 4 to rise and fill the gap. For patients with excessive lumbar pressure, the first electric push rod 8 and the second electric push rod 10 of the drive unit shorten, and the first lumbar support 3 descends to release pressure. The first motor 9 can drive the first electric push rod 8 to rotate, directly adjusting the pitch angle of the first lumbar support 3 to match the natural lordosis of the lumbar spine. After the patient lies down, the head support and leg support first fix the two ends of the body to ensure that the trunk does not shift as a whole. After all the lumbar supports are adjusted to the correct position, they are kept in a fixed state, and the CT scan is started to ensure that the body position is stable and does not shift during the scan.

[0024] like Figures 4 to 6 As shown, the driving component includes a second electric push rod 10 and a second motor 13. The second motor 13 is slidably connected to the top of the movable plate 5 and can move horizontally synchronously with the second waist support 4. The output end of the second motor 13 is fixedly connected to the second electric push rod 10. The second electric push rod 10 passes through the top of the scanning bed 2 and is inserted into the bottom of the second waist support 4. The movable plate 5 and the second electric push rod 10 are symmetrically arranged on both sides of the first electric push rod 8. The two movable plates 5 are connected by a first spring 16.

[0025] When the patient lies flat on the scanning bed 2, with their head and feet secured to the headrest and leg rest respectively, and their torso kept straight, the slow-rebound sponge pad 17 of the first lumbar support 3 initially contacts the patient's lower back to absorb pressure. When the third motor 11 of the drive structure is activated, it drives the rotating rod 12 to rotate. Under the constraint of the guide rod, the movable block 14 descends, and the push plates 15 hinged on both sides open outward, pushing the movable plate 5 to slide horizontally along the scanning bed 2. The second motor 13 and the second electric push rod 10 at the top move horizontally synchronously with the movable plate 5, thereby driving the second lumbar support 4 to slide along the mounting groove of the first lumbar support 3 until the second lumbar support 4 moves to the target position on both sides of the patient's lower back. When the movable plate 5 moves, the first spring 16 is stretched synchronously. The compression buffer cushions the impact of the moving plate 5, preventing the second lumbar support 4 from colliding with the patient's waist due to excessive adjustment speed. This effectively counteracts the loosening of support caused by mechanical gaps and reduces the risk of body position deviation during scanning. After the horizontal position is determined, the second motor 13 at the top of the moving plate 5 is activated to drive the second electric push rod 10 to extend and retract. When the second electric push rod 10 extends, it pushes the second lumbar support 4 upward along the mounting groove until it fits the low area on both sides of the patient's waist. The second electric push rod 10 retracts, pulling the second lumbar support 4 downward to fit the protruding parts on both sides of the waist. By adjusting the height and angle of the second lumbar support 4, it can be adapted to patients with different waist circumferences and waist contours, and is especially suitable for precise support on both sides of the waist of obese or thin patients.

[0026] like Figures 4 to 5 As shown, a fitting pad 17 is fixedly connected to the contact surface of the first lumbar support 3. The fitting pad 17 is made of slow rebound sponge and is used to fit the patient's waist. It directly contacts the patient's waist to achieve flexible fit and pressure distribution.

[0027] Once the first lumbar support 3 is adjusted to the target height and angle via the first electric push rod 8 and the first motor 9, the slow-rebound foam automatically deforms according to the pressure distribution of the patient's lower back, filling the tiny gaps between the lumbar spine and the lumbar support, ensuring a tight fit. The viscoelasticity of the slow-rebound foam evenly distributes lumbar pressure across the entire contact surface, reducing pain for elderly patients and those with spinal degeneration while lying down. It also reduces spontaneous positional shifts caused by excessive local pressure and absorbs displacements caused by breathing and muscle micro-movements during the scan, maintaining spinal stability and indirectly improving CT imaging quality. Furthermore, the first electric push rod 8, the second electric push rod 10, the movable plate 5, and other components are symmetrically distributed around the center of the scanning bed 2, and the adjustment structure of the second lumbar support 4 is located on both sides of the first electric push rod 8, ensuring balanced force during lumbar support adjustment and preventing bed shaking or positional shifts caused by unilateral adjustment.

[0028] like Figures 3 to 5As shown, the bottom of the scanning bed 2 has two moving grooves 18, both of which are cross-shaped, providing a sliding track for the baffle 19, constraining the movement direction of the second waist support 4, and preventing deviation during adjustment. The moving groove 18 is located at the bottom of the first waist support 3. A sliding groove is provided on the side of the moving groove 18 away from the first waist support 3. The baffle 19 is disposed inside the moving groove 18. The two sides of the baffle 19 are slidably connected to the sliding groove and the inner wall of the moving groove 18, respectively. The end of the baffle 19 near the first waist support 3 is located at the bottom of the first waist support 3 and the second waist support 4, and the end of the baffle 19 near the first waist support 3 is rotatably connected to the top of the second electric push rod 10.

[0029] When the drive structure causes the drive component to move the second lumbar support 4, the baffle 19 slides synchronously along the transverse track of the moving groove 18 with the second electric push rod 10. One side slides smoothly along the groove, while the other side supports the bottom of the second lumbar support 4, preventing the push rod from bending due to the patient's weight. At the same time, it provides tensile protection to the top of the scanning bed 2. After all lumbar supports are adjusted to their positions, the baffle 19, the moving groove 18, and the first spring 16 work together to maintain the stable position of the lumbar support. During the scanning process, if the patient experiences slight movement, the viscoelasticity of the contact pad 17 and the support of the baffle 19 can absorb the displacement, preventing positional shift from affecting image quality. The supporting effect of the baffle 19 disperses the load-bearing pressure of the second electric push rod 10, preventing the push rod from bending and deforming due to long-term unilateral force, thus reducing the maintenance frequency and replacement cost of the equipment.

[0030] like Figures 7 to 8 As shown, a groove is provided in the middle of the second lumbar support 4. A limiting structure is provided inside the groove and on the first lumbar support 3. The limiting structure is symmetrically arranged at the center of the first lumbar support 3 and is used to limit the position of the second lumbar support 4. The limiting structure includes a third electric push rod 20, a protrusion 21, a moving block 22, and a limiting rod 23. The third electric push rod 20 is fixedly connected to the inner wall of the first lumbar support 3. The third electric push rod 20 is fixedly connected to the protrusion 21. A moving block 22 is provided on one side of the protrusion 21. The moving block 22 is fixedly connected to the limiting rod 23. The limiting rod 23 passes through the groove, the second waist support 4 is inserted into the first waist support 3, one end of the third electric push rod 20 extends into the groove along with the protrusion 21, the moving block 22 is slidably connected to the inner wall of the groove, the side of the moving block 22 near the protrusion 21 is an inclined surface, the protrusion 21 is located at the inclined surface, the side of the moving block 22 away from the protrusion 21 is provided with a fixing groove, the limiting rod 23 is located in the limiting groove, the limiting rod 23 is sleeved with a second spring 24, one end of the second spring 24 is fixedly connected to the inner wall of the limiting groove, and the other end is fixedly connected to the inner wall of the groove.

[0031] When the second lumbar support 4 completes its horizontal extension and vertical adjustment, precisely fitting the patient's lower back, the protrusion 21 is at its initial position on the inclined surface of the moving block 22, the second spring 24 is in its naturally extended state, and the limiting rod 23 is not inserted into the first lumbar support 3's insertion hole. The third electric push rod 20 is activated to push the protrusion 21 into the groove. The inclined surface of the protrusion 21 contacts and presses against the inclined surface of the moving block 22, pushing the moving block 22 to slide along the inner wall of the groove. Simultaneously, it drives the limiting rod 23 to move towards the first lumbar support 3. Finally, the limiting rod 23 passes through the side wall of the second lumbar support 4 and inserts into the reserved insertion hole of the first lumbar support 3. During the sliding process of the moving block 22, the second spring 24 is compressed, storing elastic potential energy. At this time, the horizontal and vertical displacement of the second lumbar support 4 is completely constrained by the limiting rod 23, preventing displacement. When the CT scan... Upon completion of the scan, the system issues an unlock command. The third electric push rod 20 retracts, causing the protrusion 21 to retract away from the moving block 22. The protrusion 21 disengages from the inclined surface of the moving block 22, and the second spring 24 releases its elastic potential energy, pulling the moving block 22 to slide in the opposite direction. Simultaneously, it causes the limiting rod 23 to exit the insertion hole of the first lumbar support 3. The moving block 22 and the limiting rod 23 return to their initial positions, and the second lumbar support 4 regains its freedom of adjustment for horizontal extension and vertical lifting, allowing for readjustment according to the needs of the next patient. The limiting structure is embedded in the groove of the second lumbar support 4 and the inner wall of the first lumbar support 3, without protruding from the support surface, thus not interfering with the fit between the lumbar support and the patient's waist, balancing locking function and comfort.

[0032] like Figures 7 to 8 As shown, the groove is T-shaped. A fixing component is provided at the bottom of the movable block 22 and at the bottom end inside the groove. The fixing component includes a movable plate 25 and a fixing rod 26. The movable plate 25 is fixedly connected to the bottom of the movable block 22. The fixing rod 26 is fixedly connected to one side of the movable plate 25. The top end of the second electric push rod 10 extends into the groove. Both sides of the movable plate 25 are slidably connected to the inner wall of the bottom end of the groove. A slot is provided at the top end of the second electric push rod 10, and the fixing rod 26 is inserted into the slot.

[0033] In the initial state, the second lumbar support 4 is located in the mounting groove. At this time, the protrusion 21 is located in the initial position on the inclined surface of the moving block 22, the second spring 24 is in a compressed state, the limiting rod 23 is inserted into the insertion hole of the first lumbar support 3, and the fixing rod 26 is not inserted into the slot of the second electric push rod 10. At this time, the second lumbar support 4 is fixed in the first lumbar support 3, and the first lumbar support 3 and the second lumbar support 4 can be removed for disinfection and replacement. When the second lumbar support 4 needs to move to the outside of the first lumbar support 3, the third electric push rod 20 is activated to retract, so that the protrusion 21 no longer squeezes the moving block 22. Under the action of the second spring 24, the limiting rod 23 is driven to move into the groove. At the same time, the moving block 22 drives the moving plate 25 and the limiting rod 23 to move. When the limiting rod 23 has completely moved into the groove, the limiting rod 23 is inserted into the slot at the top of the second electric push rod 10, thereby connecting the second lumbar support 4 with the second electric push rod 10. This allows the two second lumbar supports 4 to move to the outside of the first lumbar support 3 for angle and height adjustment, which can be readjusted for the next patient.

[0034] Working principle of this invention: Reference Figures 1 to 8 As shown, during use, the patient lies flat on the scanning bed 2, with the head and feet fixed on the headrest and leg rest respectively, and the torso kept straight. In the initial state, the second lumbar support 4 is located in the mounting groove, at which time the protrusion 21 is located in the initial position of the inclined surface of the moving block 22, the second spring 24 is in a compressed state, the limiting rod 23 is inserted into the insertion hole of the first lumbar support 3, the fixing rod 26 is not inserted into the slot of the second electric push rod 10, and the second lumbar support 4 is fixed in the mounting groove of the first lumbar support 3. By starting the first electric push rod 8, the first lumbar support 3 and the second lumbar support 4 are moved upward, and the angle of the first electric push rod 8, the first lumbar support 3 and the second lumbar support 4 is adjusted by the first motor 9. The slow rebound sponge pad 17 of the first lumbar support 3 first contacts the patient's waist to bear the lumbar pressure. After the patient's position is fixed and calibrated, the CT machine 1 is started to scan.

[0035] When scanning an elderly patient, the third electric push rod 20 is first activated to retract, causing the protrusion 21 to move out of the moving block 22 and no longer press against it. Under the action of the second spring 24, the limiting rod 23 moves into the groove. At the same time, the moving block 22 moves the moving plate 25 and the limiting rod 23. When the limiting rod 23 is fully moved into the groove, it engages with the slot at the top of the second electric push rod 10, thereby connecting the second lumbar support 4 to the second electric push rod 10. Then, the third motor 11 is activated to rotate the rotating rod 12. Because of the threaded connection and the restriction of the guide rod, the movable block 14 on the rod 12 causes the push plates 15 hinged on both sides to open outward when the movable block 14 descends, pushing the movable plate 5 to slide horizontally along the scanning bed 2. The second motor 13 and the second electric push rod 10 at the top move horizontally synchronously with the movable plate 5, thereby driving the second lumbar support 4 to slide along the mounting groove of the first lumbar support 3 until the second lumbar support 4 moves to the outside of the first lumbar support 3, so that the patient lies on the scanning bed 2. The patient's scanning position is adjusted and calibrated by the head support, the first lumbar support 3, the second lumbar support 4 and the foot support.

[0036] After the patient lies on the first lumbar support 3 and the second lumbar support 4, the second motor 13 at the top of the movable plate 5 is activated, driving the second electric push rod 10 to extend and retract. When the second electric push rod 10 extends, it pushes the second lumbar support 4 upward along the mounting groove until it fits the lower areas on both sides of the patient's waist. When the second electric push rod 10 retracts, it pulls the second lumbar support 4 downward to fit the protruding parts on both sides of the waist. By adjusting the height and angle of the second lumbar support 4, after the second lumbar support 4 has completed its support and limiting function, the drive component is activated, causing the first electric push rod 8 to extend and retract, changing the vertical height of the first lumbar support 3. For patients with unsupported mid-lumbar region, the first electric push rod 8 raises the first lumbar support 3 to fill the gap. For patients with excessive lumbar pressure, the first electric push rod 8 retracts, causing the first lumbar support 3 to descend and release pressure. The first motor 9 can drive the first electric push rod 8 to rotate, directly adjusting the tilt angle of the first lumbar support 3 to match the natural lordosis of the lumbar spine. After the patient lies down... After the first lumbar support 3, the second lumbar support 4, the head support, and the foot support are kept in a fixed position, the CT scan is started.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A patient position adaptive calibration device for a CT scanning bed (2), characterized in that, include: A CT scanner (1) is provided with a scanning bed (2) on one side for scanning patients; The headrest and leg rest are respectively set at both ends of the CT machine (1) to fix the patient's head and feet; The first lumbar support (3) is set in the middle of the scanning bed (2) to fix the patient's waist; The second lumbar support (4) is disposed on both sides of the first lumbar support (3), and the bottom of the second lumbar support (4) is provided with an adjustment structure, the adjustment structure including: The drive structure is set inside the scanning bed (2), and movable plates (5) are provided on both sides of the drive structure for pushing the movable plates (5) to move. The driving component is located between the movable plate (5) and the second lumbar support (4) and is used to drive the second lumbar support (4) to move.

2. The CT scanning bed (2) patient position adaptive calibration device according to claim 1, characterized in that: There are two first waist supports (3). The first waist supports (3) have mounting slots on both sides. The second waist support (4) is located in the mounting slot. The first waist supports (3) and the second waist supports (4) are symmetrically arranged around the center of the scanning bed (2). A cylinder (6) is hinged to the side of the first waist support (3) away from the center of the scanning bed (2). The bottom of the cylinder (6) is fixedly connected to the scanning bed (2) through a telescopic rod (7). A first electric push rod (8) is fixedly connected to the bottom of the first waist support (3). A first motor (9) is fixedly connected to the bottom of the first electric push rod (8) for adjusting the angle and distance of the first waist support (3).

3. The CT scanning bed (2) patient position adaptive calibration device according to claim 2, characterized in that: The driving component includes a second electric push rod (10) and a second motor (13). The second motor (13) is slidably connected to the top of the movable plate (5). The output end of the second motor (13) is fixedly connected to the second electric push rod (10). The second electric push rod (10) passes through the top of the scanning bed (2) and is inserted into the bottom of the second waist support (4). The movable plate (5) and the second electric push rod (10) are symmetrically arranged on both sides of the first electric push rod (8). The two movable plates (5) are connected by a first spring (16).

4. The CT scanning bed (2) patient position adaptive calibration device according to claim 3, characterized in that: A fitting pad (17) is fixedly connected to the contact surface of the first lumbar support (3). The fitting pad (17) is made of slow rebound sponge and is used to fit the patient's waist.

5. The CT scanning bed (2) patient position adaptive calibration device according to claim 4, characterized in that: The bottom of the scanning bed (2) has two moving slots (18), both of which are cross-shaped. The moving slots (18) are located at the bottom of the first waist support (3). A sliding groove is provided on the side of the moving slot (18) away from the first waist support (3). A baffle (19) is provided inside the moving slot (18). The two sides of the baffle (19) are slidably connected to the inner walls of the sliding groove and the moving slot (18), respectively. The end of the baffle (19) near the first waist support (3) is located at the bottom of the first waist support (3) and the second waist support (4). The end of the baffle (19) near the first waist support (3) is rotatably connected to the top of the second electric push rod (10).

6. The CT scanning bed (2) patient position adaptive calibration device according to claim 5, characterized in that: The second lumbar support (4) has a groove in the middle. The groove and the first lumbar support (3) have a limiting structure inside. The limiting structure is symmetrically arranged at the center of the first lumbar support (3) and is used to limit the position of the second lumbar support (4).

7. The CT scanning bed (2) patient position adaptive calibration device according to claim 6, characterized in that: The limiting structure includes a third electric push rod (20), a protrusion (21), a moving block (22), and a limiting rod (23). The third electric push rod (20) is fixedly connected to the inner wall of the first waist support (3). The third electric push rod (20) is fixedly connected to the protrusion (21). A moving block (22) is provided on one side of the protrusion (21). The moving block (22) is fixedly connected to the limiting rod (23). The limiting rod (23) passes through the groove, the second waist support (4), and is inserted into the first waist support (3).

8. The CT scanning bed (2) patient position adaptive calibration device according to claim 7, characterized in that: One end of the third electric push rod (20) extends into the groove along with the protrusion (21). The moving block (22) is slidably connected to the inner wall of the groove. The side of the moving block (22) near the protrusion (21) is an inclined surface. The protrusion (21) is located on the inclined surface. A fixing groove is provided on the side of the moving block (22) away from the protrusion (21). The limiting rod (23) is located in the limiting groove. A second spring (24) is sleeved on the limiting rod (23). One end of the second spring (24) is fixedly connected to the inner wall of the limiting groove, and the other end is fixedly connected to the inner wall of the groove.

9. The CT scanning bed (2) patient position adaptive calibration device according to claim 8, characterized in that: The groove is T-shaped. A fixing member is provided at the bottom of the movable block (22) and at the bottom of the groove. The fixing member includes a movable plate (25) and a fixing rod (26). The movable plate (25) is fixedly connected to the bottom of the movable block (22), and the fixing rod (26) is fixedly connected to one side of the movable plate (25).

10. The CT scanning bed (2) patient position adaptive calibration device according to claim 9, characterized in that: The top end of the second electric push rod (10) extends into the groove, and both sides of the moving plate (25) are slidably connected to the inner wall of the bottom end of the groove. The top end of the second electric push rod (10) is provided with a slot, and the fixed rod (26) is inserted into the slot.

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