A CT scan special bed convenient for leg support
By designing a CT scan bed that facilitates leg support, and utilizing an airbag-driven tilting plate and hydraulic cylinder gear system, the problem of incorrect foot posture during CT scans has been solved, achieving both patient comfort and bed stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ANZHEN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV
- Filing Date
- 2025-01-07
- Publication Date
- 2026-06-02
AI Technical Summary
During CT scans, patients often find it difficult to maintain the correct posture of their feet being parallel and flat, leading to discomfort. Furthermore, it is difficult to maintain the bent position of the lower legs and thighs for extended periods.
A CT scan bed designed for easy leg support includes a leg support mechanism and a drive mechanism. The bed adjusts the angle between the lower leg and thigh by using an airbag to drive a tilting plate, and rotates and moves the bed through a hydraulic cylinder and gear system.
It enables the patient to maintain the correct foot posture, reduces discomfort, and supports adjustments at different angles and stable movement of the bed.
Smart Images

Figure CN224307341U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a CT scan-specific hospital bed that facilitates leg support. Background Technology
[0002] CT, or computed tomography, is a medical imaging technique. It uses precisely collimated X-ray beams, gamma rays, ultrasound waves, etc., along with highly sensitive detectors, to scan a specific part of the body one section at a time. It features fast scanning time and clear images, and can be used to examine a variety of diseases.
[0003] When performing a CT scan on the feet, the patient's feet need to be in the correct position with the insteps side by side and flat on the scanning bed. However, when the patient is lying flat, the soles of the feet are usually raised, meaning there is an angle between the soles of the feet and the bed. Forcing the soles of the feet to be flat on the bed by the doctor or the patient can cause discomfort. To reduce patient discomfort, the patient's lower legs and thighs are usually bent, but when examining the feet, the patient cannot maintain this bent position for an extended period of time. Utility Model Content
[0004] The purpose of this invention is to provide a CT scan bed that facilitates leg support, in order to solve the aforementioned technical problems.
[0005] This utility model provides a CT scan-specific hospital bed that facilitates leg support, including a bottom support column and an upper bed body. The top surface of the bed body is provided with a leg support mechanism, which includes a hinged base plate and a flip-up slot plate. The top surface of the flip-up slot plate has an arc-shaped groove for placing the legs, and the base plate is equipped with a drive mechanism for driving the flip-up slot plate to hinge and flip.
[0006] Furthermore, the driving mechanism is an airbag, which is disposed between the base plate and the tilting slot plate. An air supply pipe connected to the air supply equipment is installed on the airbag, and a sealing cap is threaded onto the air supply pipe.
[0007] Furthermore, the airbag has Velcro straps on its folded, opposite surfaces.
[0008] Furthermore, the top surface of the bed is provided with a placement groove for placing the leg support mechanism. The leg support mechanism is slidably connected to the placement groove. An electric push rod is installed at the bottom of the placement groove, and the telescopic end of the electric push rod is connected to the base plate.
[0009] Furthermore, a hydraulic cylinder is installed in the first groove on the top surface of the support column, a drive motor is installed at the top of the piston rod of the hydraulic cylinder, a gear is installed on the output shaft of the drive motor, and a wedge block is installed at the top of the output shaft of the drive motor. The maximum length of the wedge block is not greater than the root circle diameter of the gear.
[0010] Furthermore, the bottom surface of the bed is provided with a first slot, a second groove, a second slot, and a third groove in sequence from bottom to top. The first slot, the second groove, the second slot, and the third groove are all connected to the first groove, and the lengths of the first slot, the second groove, and the second slot are the same.
[0011] Furthermore, a rack that meshes with the gear is installed on the inner wall of the second groove, and the distance between the tooth tip of the rack and the inner wall of the opposite second groove is not less than the maximum length of the wedge block.
[0012] Furthermore, the opening width of the first slot and the second slot is not less than the tip circle diameter of the gear.
[0013] Furthermore, the third groove is configured to cooperate with the wedge block, and an infrared sensor is provided between the third groove and the wedge block.
[0014] Furthermore, the receiver of the infrared sensor is mounted on the top of the wedge-shaped block, and the transmitter of the infrared sensor is mounted on the inner surface of the third groove at a position corresponding to the receiver.
[0015] This invention provides support for the patient's lower leg by setting a leg support mechanism, ensuring that the patient's feet are in the correct posture with the insteps side by side and flat. By setting a drive mechanism and a flip-up slot plate that is hinged to the base plate, the angle between the patient's lower leg and thigh can be adjusted, which is suitable for different angle adjustment situations. Attached Figure Description
[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the flip-over groove plate support structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the gear meshing structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the hydraulic rod telescopic structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the flip-up slotted storage structure of this utility model;
[0022] Figure 6 This is a partially enlarged schematic diagram of point A in this utility model;
[0023] Figure 7 This is a partially enlarged schematic diagram of section B of this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] In the diagram: 1-support column, 2-drive motor, 201-wedge block, 3-hydraulic cylinder, 4-gear, 5-bed, 501-first slot, 502-second groove, 503-second slot, 504-third groove, 505-placement slot, 6-rack, 701-receiver, 702-transmitter, 8-electric push rod, 9-base plate, 10-airbag, 11-flipping slot plate, 12-Velcro, 13-air pipe, 14-sealing cover, 1501-support column, 1502-circular guide rail; Detailed Implementation
[0026] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Example 1
[0030] like Figures 1-7 As shown:
[0031] A CT scan bed designed for easy leg support includes a bottom support column 1 and an upper bed body 5. The top surface of the bed body 5 has a placement groove 505 for placing a leg support mechanism. The leg support mechanism is slidably connected to the placement groove 505, and an electric push rod 8 is installed at the bottom of the placement groove 505.
[0032] The leg support mechanism includes a hinged base plate 9 and a flip-up slot plate 11. The telescopic end of the electric push rod 8 is connected to the base plate 9. The top surface of the flip-up slot plate 11 has an arc-shaped slot for placing the legs. The base plate 9 is equipped with a drive mechanism that drives the flip-up slot plate 11 to hinge and flip.
[0033] In this embodiment, the driving mechanism is an airbag 10, which is disposed between the base plate 9 and the flip-up slot plate 11. An air supply pipe 13 connected to an air supply device is installed on the airbag 10, and a sealing cap 14 is threaded onto the air supply pipe 13. Velcro 12 is provided on the folding opposite surfaces of the airbag 10.
[0034] When in use, the patient places their lower leg into the arc-shaped groove of the flip-up slot 11. The electric push rod 8 is activated to push the leg support mechanism upward from the placement slot 505. The Velcro 12 on the airbag 10 is removed, the sealing cover 14 is removed, and the air supply tube 13 is connected to the air supply device. The air supply device inputs gas into the air supply tube 13. The flip-up slot 11 is hinged and flipped under the push of the airbag 10. The patient's lower leg is pushed up to form a certain angle with the thigh. The patient's feet are placed on the top surface of the bed 5 in the correct posture of feet side by side and flat.
[0035] The top surface of the support column 1 has a first groove, and the bottom surface of the bed body 5 has a first groove 501, a second groove 502, a second groove 503 and a third groove 504 corresponding to the first groove, which are opened sequentially from bottom to top. The first groove 501, the second groove 502, the second groove 503 and the third groove 504 are all connected to the first groove, and the opening lengths of the first groove 501, the second groove 502 and the second groove 503 are the same.
[0036] A hydraulic cylinder 3 is installed in the first groove. A drive motor 2 is installed at the top of the piston rod of the hydraulic cylinder 3. A gear 4 is installed on the outer wall of the output shaft of the drive motor 2. A wedge block 201 is installed at the top of the output shaft of the drive motor 2. The maximum length of the wedge block 201 is not greater than the root circle diameter of the gear 4.
[0037] A rack 6 that meshes with the gear 4 is installed on the inner wall of the second groove 502. The distance between the tooth tip of the rack 6 and the inner wall of the opposite second groove 502 is not less than the maximum length of the wedge block 201, and the thickness of the rack 6 is not less than the thickness of the gear 4.
[0038] The opening width of the first slot 501 and the second slot 503 is not less than the tip circle diameter of the gear 4.
[0039] The third groove 504 is configured to cooperate with the wedge block 201, and an infrared sensor is provided between the third groove 504 and the wedge block 201.
[0040] The receiver 701 of the infrared sensor is mounted on the top of the wedge block 201, and the transmitter 702 of the infrared sensor is mounted on the inner surface of the third groove 504 at the position corresponding to the receiver 701.
[0041] When installing the transmitter 702 and receiver 701 of the infrared sensor, ensure that the teeth of the gear 4 correspond to the grooves of the rack 6 to avoid the gear 4 being blocked by the rack 6 during its up-and-down movement.
[0042] In the initial state, gear 4 is set in the first empty groove 501, and wedge block 201 is set in the second groove 502.
[0043] When the bed 5 needs to rotate, the transmitter 702 and receiver 701 of the infrared sensor correspond and send a signal indicating the accurate alignment of the wedge block 201 with the third groove 504. The hydraulic cylinder 3 starts, driving the drive motor 2, gear 4, and wedge block 201 upwards. The wedge block 201 falls into the third groove 504 through the second slot 503 and engages with it. At the same time, the gear 4 falls into the second slot 503 through the second groove 502.
[0044] When the drive motor 2 starts, the wedge block 201 rotates under the drive of the drive motor 2, and the bed 5 rotates under the drive of the third groove 504 that cooperates with the wedge block 201.
[0045] When the bed 5 needs to move into the CT scanner, the hydraulic cylinder 3 is activated. The hydraulic cylinder 3 drives the drive motor 2, gear 4, and wedge block 201 to move downwards. Gear 4 falls into the second groove 502 and meshes with the rack 6 in the second groove 502. At this time, the wedge block 201 falls into the second empty slot 503. The drive motor 2 is activated, gear 4 rotates, and the position of gear 4 is relatively fixed. The bed 5 moves horizontally under the drive of the rack 6, which is meshed with gear 4.
[0046] To further improve stability during rotation, an annular guide rail 1502 is provided below the bed 5, which is coaxially arranged with the rotation center of the wedge block 201. A support column 1501 is installed below the annular guide rail 1502, and a guide block is installed on the bed 5 that extends into the annular guide rail 1502 and is slidably connected to the annular guide rail 1502.
[0047] When the bed 5 rotates relative to the support column 1 under the drive of the drive motor 2 and the wedge block 201, the guide block slides in the annular guide rail 1502, which enhances the support stability of the bed 5 when it rotates.
[0048] To further improve stability during movement, a straight guide rail is installed on the annular guide rail 1502. The track of the straight guide rail is connected to the track of the annular guide rail 1502. The straight guide rail is parallel to the moving direction of the bed 5. The length of the straight guide rail is consistent with the moving stroke of the bed 5. The guide block is slidably connected to the straight guide rail.
[0049] When the bed 5 moves horizontally relative to the support column 1 under the combined action of the drive motor 2, gear 4 and rack 6, the guide block slides in the straight guide rail, enhancing the support stability of the bed 5 during movement.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A CT scan bed designed for easy leg support, characterized in that... The bed includes a bottom support column and an upper bed frame. The top surface of the bed frame is provided with a leg support mechanism. The leg support mechanism includes a hinged base plate and a flip-up slot plate. The top surface of the flip-up slot plate has an arc-shaped groove for placing the legs. The base plate is equipped with a drive mechanism for driving the flip-up slot plate to hinge and flip.
2. The CT scan bed with convenient leg support according to claim 1, characterized in that, The driving mechanism is an airbag, which is disposed between the base plate and the tilting slot plate. An air supply pipe connected to the air supply equipment is installed on the airbag, and a sealing cap is threaded onto the air supply pipe.
3. The CT scan bed with convenient leg support according to claim 2, characterized in that, The airbag has Velcro straps on its folded, opposite surfaces.
4. The CT scan bed with convenient leg support according to claim 1, characterized in that, The top surface of the bed has a slot for placing the leg support mechanism. The leg support mechanism is slidably connected to the slot. An electric push rod is installed at the bottom of the slot, and the telescopic end of the electric push rod is connected to the base plate.
5. The CT scan bed with convenient leg support according to claim 1, characterized in that, A hydraulic cylinder is installed in the first groove on the top surface of the support column. A drive motor is installed at the top of the piston rod of the hydraulic cylinder. A gear is installed on the output shaft of the drive motor. A wedge block is installed at the top of the output shaft of the drive motor. The maximum length of the wedge block is not greater than the root circle diameter of the gear.
6. The CT scan bed with convenient leg support according to claim 5, characterized in that, The bottom surface of the bed is provided with a first slot, a second groove, a second slot, and a third groove in sequence from bottom to top. The first slot, the second groove, the second slot, and the third groove are all connected to the first groove, and the lengths of the first slot, the second groove, and the second slot are the same.
7. The CT scan bed with convenient leg support according to claim 6, characterized in that, A rack that meshes with the gear is installed on the inner wall of the second groove, and the distance between the tooth tip of the rack and the inner wall of the opposite second groove is not less than the maximum length of the wedge block.
8. The CT scan bed with convenient leg support according to claim 7, characterized in that, The opening width of the first slot and the second slot is not less than the tip circle diameter of the gear.
9. The CT scan bed with convenient leg support according to claim 7, characterized in that, The third groove is configured to cooperate with the wedge block, and an infrared sensor is provided between the third groove and the wedge block.
10. The CT scan bed with convenient leg support according to claim 9, characterized in that, The receiver of the infrared sensor is mounted on the top of the wedge block, and the transmitter of the infrared sensor is mounted on the inner surface of the third groove at a position corresponding to the receiver.