Medical bed

Abstract

This invention provides a medical bed, comprising a lifting mechanism, a trailer, a bed frame, a base, and a column. The column is slidably connected to the base, and the lifting mechanism is slidably connected to the column. One end of the trailer is fixedly connected to the side wall of the lifting mechanism, and the other end of the trailer is fixedly connected to the bed frame. The bed frame is fixed to the lower side of the trailer, and the end of the bed frame away from the trailer is cantilevered. The medical bed provided by this invention, when the bed frame extends into the aperture, can be positioned closer to the bottom of the aperture, freeing up space below the bed frame and thus increasing the treatment space, providing more operating space for medical equipment.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and more specifically, relates to a medical bed. Background Technology

[0002] With the development of medicine and the advancement of technology, medical imaging equipment has made significant progress. Current medical imaging equipment generally includes a main unit, a scanning bed, and a control system. The scanning bed typically has two degrees of freedom, enabling both vertical and horizontal movement. Specifically, the scanning bed can move horizontally in and out of the aperture; one end of the scanning bed is fixed to a lifting mechanism via a trailer, allowing for its lifting, while the other end extends into the aperture. When the scanning bed enters the aperture, the trailer also partially enters the aperture. The trailer's placement below the scanning bed results in excessive vertical space being occupied, leaving less space above the scanning bed and consequently less space for diagnosis and treatment. Summary of the Invention

[0003] The purpose of this invention is to provide a medical bed to solve the technical problem of small treatment space inside the aperture in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a medical bed is provided, comprising a lifting component, a trailer, a bed body, a base, and a column. The column is slidably connected to the base, the lifting component is slidably connected to the column, one end of the trailer is fixedly connected to the side wall of the lifting component, the other end of the trailer is fixedly connected to the bed body, the bed body is fixed to the lower side of the trailer, and the end of the bed body away from the trailer is cantilevered.

[0005] Optionally, the lower side of the trailer is tilted so that the bed is tilted relative to the horizontal plane, and the bed gradually rises from the trailer in the direction away from the trailer.

[0006] Optionally, the bed has a first end close to the lifting member and a second end away from the lifting member, the height difference between the second end and the first end of the bed is the deformation amount, the length of the bed is positively correlated with the deformation amount, and the length of the connection area between the bed and the trailer is negatively correlated with the deformation amount.

[0007] Optionally, the lifting component surrounds the outer periphery of the column, a first sliding engagement portion is provided on the outer side of the column, and a second sliding engagement portion is provided on the inner side of the lifting component, the second sliding engagement portion being slidably connected to the first sliding engagement portion in the vertical direction.

[0008] Optionally, the column at least partially encloses the base.

[0009] Optionally, the base includes a first main body and an extension structure, the extension structure being formed by the first main body extending toward the column; the column includes a second main body and a covering structure, the covering structure being formed by the second main body extending toward the first main body, the covering structure covering the extension structure, and the covering structure being slidably connected to the extension structure.

[0010] Optionally, the extension structure has a first mating surface, the covering structure has a second mating surface, the first mating surface and the second mating surface slide against each other, and the first mating surface and the second mating surface are arranged opposite to each other.

[0011] Optionally, the column or the base is further provided with a leveling component, which includes a driver, a timing belt assembly and a clutch. The driver is used to drive the timing belt assembly. The belt of the timing belt assembly is fixedly connected to the column. The driver can be selectively connected to or separated from the timing belt assembly through the clutch. The timing belt assembly is located between the driver and the clutch.

[0012] Optionally, the pulley of the timing belt assembly is hollow, the drive's motion output shaft passes through the pulley and is connected to the inner ring of the clutch's moving element, and one axial end of the pulley is connected to the outer ring of the clutch's moving element.

[0013] Optionally, the bottom of the column is provided with a sensor for detecting obstacles.

[0014] The beneficial effects of the medical bed provided by this invention are as follows: Compared with the prior art, the medical bed of this invention includes a lifting component, a trailer, a bed body, a horizontal adjustment component, and a vertical adjustment component. One end of the bed body is fixed to the lower side of the trailer, and the other end of the bed body is cantilevered and used to extend into an aperture. When the bed body extends into the aperture, it can be positioned closer to the bottom of the aperture, freeing up space below the bed body and thus increasing the treatment space, providing more operating space for medical equipment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 Three-dimensional structure of a medical bed provided in an embodiment of the present invention Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the bed and trailer provided in an embodiment of the present invention;

[0018] Figure 3 A top view of the column, lifting component, and trailer provided in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of a first structure of the base and column provided in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of a second structure of the base and column provided in an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the horizontal adjustment component provided in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of a half-section three-dimensional structure of a pulley provided in an embodiment of the present invention;

[0023] Figure 8 Three-dimensional structure of a medical bed provided in an embodiment of the present invention Figure 2 .

[0024] The following are the labeling elements in the figure:

[0025] 10-Base; 11-First main body; 12-Extension structure; 120-First mating surface; 121-First extension; 122-Second extension; 20-Post; 21-First sliding mating part; 22-Second main body; 23-Covering structure; 230-Second mating surface; 231-First cover; 232-Second cover; 233-Third cover; 24-Sensor; 30-Lifting component; 31-First sidewall; 32-Second sidewall; 33-Third sidewall 34-Fourth side wall; 35-Second sliding fit; 40-Trailer; 41-Horizontal part; 42-Vertical part; 50-Bed; 61-Third sliding fit; 62-Fourth sliding fit; 70-Horizontal adjustment assembly; 71-Driver; 711-Motion output shaft; 72-Clutch; 721-Inner ring of mover; 722-Outer ring of mover; 73-Synchronous belt assembly; 731-Pulley; 7311-Center hole; 732-Belt; 80-Vertical adjustment assembly. Detailed Implementation

[0026] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] With the development of medicine and the advancement of technology, medical imaging equipment such as positron emission tomography (PET) and computed tomography (CT) have made significant progress. Existing medical imaging equipment generally includes a main unit, a scanning bed, and a control system. The scanning bed typically has two degrees of freedom, enabling both vertical and horizontal movement. Specifically, the scanning bed can move horizontally in and out of the aperture; one end of the scanning bed is fixed to a lifting mechanism via a trailer, enabling the scanning bed to rise and fall, while the other end extends into the aperture. When the scanning bed enters the aperture, the trailer also partially enters the aperture. The trailer's placement below the scanning bed results in excessive vertical space being occupied, leaving less space above the scanning bed and consequently less space for diagnosis and treatment.

[0031] To alleviate the above technical problems, this invention provides a medical bed in which the bed body 50 is connected to the lifting component 30 via a trailer 40. One end of the bed body 50 is fixed to the lower side of the trailer 40, so that the bed body 50 is located below the trailer 40. When the bed body 50 enters the aperture, the space at the bottom of the aperture can be released, increasing the treatment space above the bed body 50.

[0032] The medical bed provided in the embodiments of the present invention will now be described.

[0033] Please see Figure 1 The medical bed includes a lifting component 30, a trailer 40, a bed body 50, a base 10, and a column 20. The column 20 is slidably connected to the base 10, and the lifting component 30 is slidably connected to the column 20. One end of the trailer 40 is fixedly connected to the side wall of the lifting component 30, and the other end of the trailer 40 is fixedly connected to the bed body 50. The bed body 50 is fixed to the lower side of the trailer 40, and the end of the bed body 50 away from the trailer 40 is cantilevered.

[0034] The trailer 40 connects the bed body 50 and the lifting mechanism 30, serving as a transitional link between them. The length of the trailer 40 is generally shorter than the length of the bed body 50. The bed body 50 is similar in shape to a standard hospital bed and is used for patient lying down. When lying on the bed body 50, the patient's head is generally positioned at the end furthest from the lifting mechanism 30. The bed body 50 and the trailer 40 partially overlap, with the bed body 50 located on the underside of the trailer 40. Specifically, the upper side of the bed body 50 near the lifting mechanism 30 is in contact with the lower side of the trailer 40.

[0035] The medical bed in the above embodiment includes a lifting component 30, a trailer 40, a bed body 50, a horizontal adjustment component 70, and a vertical adjustment component 80. One end of the bed body 50 is fixed to the lower side of the trailer 40, and the other end of the bed body 50 is cantilevered and used to extend into an aperture. When the bed body 50 extends into the aperture, it can be positioned closer to the bottom of the aperture, freeing up space below the bed body 50 and thus increasing the treatment space, providing more operating space for medical equipment.

[0036] In some embodiments of the present invention, please refer to Figure 2 The lower side of the trailer 40 is tilted, causing the bed 50 to be tilted relative to the horizontal plane, and the bed 50 gradually rises from the trailer 40 to the direction away from the trailer 40. Theoretically, the bed 50 is in a rigid state, meaning it will not deform. The first end of the bed 50 is close to the trailer 40, and the second end is away from the trailer 40. The height of the first end of the bed 50 is lower than the height of the second end. Combined with... Figure 2 The height of the left end of the bed is lower than the height of its right end.

[0037] In actual use, due to its relatively long length, the second end of the bed 50 may sag, affecting the accuracy of the inspection. The height of the first end of the bed 50 is lower than the height of the second end, which can compensate for inspection errors caused by bed 50 deformation.

[0038] The lower surface of the trailer 40 is in contact with the upper surface of the bed 50, and both are inclined surfaces. The end of the inclined surface near the lifting component 30 is lower in height.

[0039] In some embodiments, the tilt angle of the bed 50 relative to the horizontal plane is α, which can be 0.2 degrees to 1 degree, such as 0.3 degrees, 0.5 degrees, 0.7 degrees, etc. The specific value can be determined according to the length and deformation of the bed 50, and is not limited here.

[0040] In some embodiments of the present invention, the bed frame 50 includes a bed body and a steel insert embedded within the bed body. The steel insert is located inside the bed body and is used to improve the strength of the bed frame 50.

[0041] Steel inserts are stronger than conventional aluminum inserts, which can improve the strength of the bed 50 and reduce the deformation of the bed 50.

[0042] In some embodiments, the steel insert includes a first reinforcing rib disposed along the length of the bed body and a second reinforcing rib connected to the first reinforcing rib, the second reinforcing rib being disposed along the width of the bed body. By providing reinforcing ribs in both the length and width directions of the bed body, the strength of the bed body in the length and width directions can be enhanced respectively.

[0043] Optionally, the second reinforcing rib may be formed by protruding from the first reinforcing rib along the width direction of the bed body, so that the second reinforcing rib is block-shaped or strip-shaped.

[0044] Optionally, there are multiple first reinforcing ribs, which are spaced apart in the width direction of the bed body, and the two ends of the second reinforcing ribs are respectively connected to two first reinforcing ribs, so that the bed body 50 has higher strength.

[0045] In some embodiments of the present invention, please refer to Figure 2The bed 50 has a first end near the lifting member 30 and a second end away from the lifting member 30. The height difference between the second end and the first end of the bed 50 is the deformation amount. The length of the bed 50 is positively correlated with the deformation amount, and the length of the connection area between the bed 50 and the trailer 40 is negatively correlated with the deformation amount. The first end and the second end of the bed 50 are the two ends of the bed 50 in the length direction, respectively. The first end of the bed 50 is fixedly connected to the trailer 40. Taking the first end of the bed 50 as a reference, the amount of sinking of the second end of the bed 50 (the height difference between the first end and the second end) is the deformation amount. The positive correlation between the length of the bed 50 and the deformation amount means that the longer the bed 50 is, the greater the deformation amount. The length of the bed 50 and the deformation amount may be directly proportional or not directly proportional. The bed 50 and the trailer 40 can be connected by connectors or other means. There are multiple connection points between the bed 50 and the trailer 40 (the locations where the fasteners are installed can be called connection points). The distance between the location of the connection point furthest from the first end of the bed 50 and the first end of the bed 50 is the length of the connection area between the bed 50 and the trailer 40. The length of the connection area between the bed 50 and the trailer 40 is negatively correlated with the amount of deformation; that is, the longer the connection area, the larger the support area for the bed 50, and the smaller the deformation of the bed 50. The length of the connection area and the amount of deformation may or may not be inversely proportional.

[0046] The length of the bed 50 and the length of the connection area between the bed 50 and the trailer 40 can be reasonably designed according to the accuracy requirements of medical diagnosis and treatment.

[0047] In some embodiments of the present invention, the bed 50 and the trailer 40 are fixedly connected by fasteners such as screws.

[0048] In some embodiments of the present invention, the trailer 40 and the lifting component 30 are fixedly connected by fasteners such as screws.

[0049] In some embodiments of the present invention, please refer to Figure 3 The lifting component 30 surrounds the outer periphery of the column 20. A first sliding engagement part 21 is provided on the outer side of the column 20, and a second sliding engagement part 35 is provided on the inner side of the lifting component 30. The second sliding engagement part 35 is slidably connected to the first sliding engagement part 21 in the vertical direction, so that the lifting component 30 is slidably connected to the column 20 in the vertical direction.

[0050] The column 20 is installed vertically, with one end close to the ground and the other end extending upward. A first sliding engagement part 21 is provided on the outer side of the column 20, which is used to slide and engage with the lifting component 30 to guide the lifting movement of the lifting component 30.

[0051] The lifting member 30 is capable of vertical movement relative to the column 20, and surrounds the outer periphery of the column 20. A receiving space is formed between the inner side of the lifting member 30 and the outer side of the column 20, providing installation space for the first sliding engagement part 21 and the second sliding engagement part 35. The second sliding engagement part 35 is located on the inner side of the lifting member 30 (the side of the lifting member 30 facing the column 20). The first sliding engagement part 21 and the second sliding engagement part 35 are slidably connected, guiding the vertical movement of the lifting member 30. The lifting member 30 is used to connect to the bed frame 50, and the vertical movement of the lifting member 30 drives the vertical movement of the bed frame 50. For ease of description and explanation, the combined structure of the first sliding engagement part 21 and the second sliding engagement part 35 can be referred to as the first guiding structure.

[0052] First sliding engagement parts 21 and second sliding engagement parts 35 can be provided at various circumferential locations on the column 20 and the lifting component 30. This allows for a reduction in the inclination of the second sliding engagement parts 35 through the design and layout of the first guide structure, thereby reducing the inclination and deformation of the bed 50 and improving the guiding and limiting effect on the lifting component 30. Furthermore, a reinforcing structure can be provided on the outer wall of the lifting component 30 to reduce the deformation at the cantilever end of the bed 50. Moreover, the column 20 of this invention has relatively small external dimensions, occupies less horizontal space, and reduces overall weight. The lifting component 30 surrounding the column 20 can enhance the rigidity of the overall structural frame.

[0053] By placing the lifting component 30 on the outer periphery of the column 20, all parts of the lifting component 30 can guide and cooperate with the column 20, thus strengthening the guiding effect on the bed 50 and reducing the tilt angle and deformation of the bed 50. Moreover, the lifting component 30 has a circumferentially closed structure, which facilitates the design of a reinforcement structure on the side of the lifting component 30 facing the bed 50, further reducing the amount of deformation.

[0054] In some embodiments of the present invention, please refer to Figure 1 The trailer 40 includes a horizontal portion 41 and a vertical portion 42 connected to each other. The horizontal portion 41 is fixedly connected to the trailer 40, and the vertical portion 42 is fixedly connected to the lifting member 30. By providing the vertical portion 42, the connection area between the trailer 40 and the lifting member 30 can be increased, ensuring the connection strength between the trailer 40 and the lifting member 30 and reducing the tilt angle of the bed 50. In this embodiment, the vertical portion 42 can be regarded as the reinforcing structure mentioned above.

[0055] In some embodiments, the trailer 40 further includes reinforcing ribs, one end of which is fixed to the horizontal portion 41 and the other end to the vertical portion 42, giving the trailer 40 a triangular support structure, enhancing the overall structural strength of the trailer 40, increasing the support force on the bed 50, and reducing the deformation of the bed 50. In this embodiment, the vertical portion 42 and the reinforcing ribs can be considered as the reinforcement structure described above.

[0056] In some embodiments of the present invention, please refer to Figure 3 The lifting member 30 is used on the side wall near the bed body 50 as the first side wall 31, and the lifting member 30 is used on the side wall away from the bed body 50 as the second side wall 32. Both the first side wall 31 and the second side wall 32 are provided with a second sliding engagement part 35, and the upright 20 is provided with a first sliding engagement part 21 on the side facing the first side wall 31 and the second side wall 32.

[0057] The lifting member 30, being arranged around the column 20, has multiple sidewalls connected sequentially end-to-end. The sidewall closest to the bed body 50 is the first sidewall 31, and the sidewall furthest from the bed body 50 is the second sidewall 32. Second sliding engagement portions 35 on both the first and second sidewalls 31 and 32 are provided on the surfaces facing the column 20, and corresponding first sliding engagement portions 21 are provided on the column 20.

[0058] The lifting component 30 is provided with a first guide structure on both the side near the bed body 50 and the side away from the bed body 50. When the second sliding mating part 35 on the side near the bed body 50 has a large tilt angle, adding the first guide structure on the side away from the bed body 50 can enhance the limiting of the lifting component 30, reduce the tilt angle, and enhance the overall strength of the medical bed.

[0059] In some embodiments, the first sidewall 31 of the lifting member 30 is provided with a plurality of second sliding engagement parts 35, and the side of the column 20 facing the first sidewall 31 is provided with a plurality of first sliding engagement parts 21, so that there are a plurality of first guide structures between the first sidewall 31 of the lifting member 30 and the column 20. The plurality of first guide structures are arranged sequentially at intervals along the horizontal direction, which can improve the stability of the movement of the lifting member 30 and the load-bearing capacity of the lifting member 30.

[0060] In some embodiments, the second sidewall 32 of the lifting member 30 is provided with a plurality of second sliding engagement parts 35, and the side of the column 20 facing the second sidewall 32 is provided with a plurality of first sliding engagement parts 21, so that there are a plurality of first guide structures between the second sidewall 32 of the lifting member 30 and the column 20. The plurality of first guide structures are arranged sequentially at intervals along the horizontal direction, which can improve the stability of the movement of the lifting member 30 and the load-bearing capacity of the lifting member 30.

[0061] In some embodiments, the first sidewall 31 and the second sidewall 32 are parallel to each other and both are arranged parallel to the vertical direction, which facilitates the design of the first sliding mating part 21 and the second sliding mating part 35, and each of the first sliding mating parts 21 and each of the second sliding mating parts 35 can be interchanged.

[0062] In some embodiments of the present invention, please refer to Figure 3The lifting component 30 also includes two oppositely arranged third sidewalls 33 and fourth sidewalls 34. The first sidewall 31, the third sidewall 33, the second sidewall 32 and the fourth sidewall 34 are connected in sequence to form a frame shape. The third sidewall 33 and the fourth sidewall 34 are each provided with a second sliding engagement part 35. The side of the column 20 facing the third sidewall 33 and the fourth sidewall 34 are each provided with a first sliding engagement part 21.

[0063] The two opposing third sidewalls 33 and fourth sidewalls 34 mean that the third sidewalls 33 and fourth sidewalls 34 are spaced apart and face each other. The first sidewall 31, third sidewall 33, second sidewall 32 and fourth sidewall 34 are connected in sequence to form a frame shape, meaning that the cross-section of the lifting component 30 is square, so that it can surround the outer perimeter of the column 20. The third sidewall 33 and fourth sidewall 34 are provided with second sliding fit parts 35 on the sides facing the column 20, and the column 20 is provided with a corresponding first sliding fit part 21.

[0064] The third side wall 33 and the fourth side wall 34 of the lifting component 30 are each provided with a second sliding fit part 35, which can make the movement of the lifting component 30 more stable and the load-bearing capacity stronger.

[0065] In some embodiments, the third sidewall 33 of the lifting member 30 is provided with a plurality of second sliding engagement parts 35, and the side of the column 20 facing the third sidewall 33 is provided with a plurality of first sliding engagement parts 21, so that there are a plurality of first guide structures between the third sidewall 33 of the lifting member 30 and the column 20. The plurality of first guide structures are arranged sequentially and spaced apart in the horizontal direction, which can improve the stability of the movement of the lifting member 30 and the load-bearing capacity of the lifting member 30.

[0066] In some embodiments, the fourth side wall 34 of the lifting member 30 is provided with a plurality of second sliding engagement parts 35, and the side of the column 20 facing the fourth side wall 34 is provided with a plurality of first sliding engagement parts 21, so that there are a plurality of first guide structures between the fourth side wall 34 of the lifting member 30 and the column 20. The plurality of first guide structures are arranged sequentially and spaced apart in the horizontal direction, which can improve the stability of the movement of the lifting member 30 and the load-bearing capacity of the lifting member 30.

[0067] In some embodiments, the third sidewall 33 and the fourth sidewall 34 are parallel to each other and both are arranged parallel to the vertical direction, which facilitates the design of the first sliding engagement part 21 and the second sliding engagement part 35, and each of the first sliding engagement parts 21 and each of the second sliding engagement parts 35 can be interchanged.

[0068] In some embodiments of the present invention, the first sidewall 31 and the third sidewall 33 of the lifting member 30 are each provided with a second sliding engagement portion 35, and the corresponding side of the column 20 is provided with a first sliding engagement portion 21. Alternatively, the first sidewall 31 and the fourth sidewall 34 of the lifting member 30 are each provided with a second sliding engagement portion 35, and the corresponding side of the column 20 is provided with a first sliding engagement portion 21. Alternatively, the first sidewall 31, the third sidewall 33, and the fourth sidewall 34 of the lifting member 30 are each provided with a second sliding engagement portion 35, and the corresponding side of the column 20 is provided with a first sliding engagement portion 21.

[0069] In some embodiments of the present invention, the second sidewall 32 and the third sidewall 33 of the lifting member 30 are each provided with a second sliding engagement portion 35, and the corresponding side of the column 20 is provided with a first sliding engagement portion 21. Alternatively, the second sidewall 32 and the fourth sidewall 34 of the lifting member 30 are each provided with a second sliding engagement portion 35, and the corresponding side of the column 20 is provided with a first sliding engagement portion 21. Alternatively, the second sidewall 32, the third sidewall 33, and the fourth sidewall 34 of the lifting member 30 are each provided with a second sliding engagement portion 35, and the corresponding side of the column 20 is provided with a first sliding engagement portion 21.

[0070] It should be noted that the above is only an example of the layout of the first guide structure, and does not limit the specific number and layout of the first guide structure.

[0071] In some embodiments of the present invention, please refer to Figure 3 The lifting component 30 is integrally formed. In this embodiment, the lifting component 30 has a stronger overall integrity, requiring no assembly to form the lifting component 30, and has no internal installation gaps. For example, the lifting component 30 can be formed by extrusion molding or milling.

[0072] In some embodiments of the present invention, the lifting member 30 includes four separately formed lifting plates, which are sequentially and fixedly connected in a frame shape. Here, "frame shape" means that the cross-section of the lifting member 30 is square or nearly square. In this embodiment, multiple lifting plates need to be fabricated first, and then the multiple lifting plates are fixedly connected to each other. This simplifies the processing steps of the lifting member 30 and reduces its processing cost. The four lifting plates can be the first sidewall 31, second sidewall 32, third sidewall 33, and fourth sidewall 34 described above.

[0073] In some embodiments, adjacent lifting plates may be connected by screws or fixed by welding.

[0074] In some embodiments of the present invention, the first sliding engagement part 21 is a slide rail, and the second sliding engagement part 35 is a slider or a slide groove. Specifically, a slider is fixed on the lifting member 30, and the slider is slidably disposed on the slide rail; or, a slide groove is provided on the lifting member 30, and the slide rail and the slide groove are interlocked to allow the lifting member 30 to move along the slide rail.

[0075] The lifting motion of the lifting component 30 is guided by the cooperation of the slide rail and the slider, or the cooperation of the slide rail and the slide groove.

[0076] In some embodiments, both the slide rail and the slider have a dovetail-shaped cross-section.

[0077] In some embodiments of the present invention, the number of first guide structures (first sliding fit portion 21 and second sliding fit portion 35) between each side wall of the lifting member 30 and the corresponding side wall of the column 20 may be the same or different. For example, a first guide structure is provided between the first side wall 31 of the lifting member 30 and the corresponding side wall of the column 20, and one or more first guide structures are provided between the third side wall 33 of the lifting member 30 and the corresponding side wall of the column.

[0078] In some embodiments of the present invention, please refer to Figure 1 , Figure 4 and Figure 5 The column 20 is slidably connected to the base 10 in the horizontal direction, and the column 20 at least partially covers the base 10.

[0079] When the column 20 slides horizontally relative to the base 10, the lifting component 30 and the bed 50 both move horizontally, thus realizing the horizontal movement of the bed 50.

[0080] By having the column 20 at least partially enclose the base 10, the sliding fit structure between the column 20 and the base 10 is concealed and not exposed on the top of the base 10. This reduces external dust and eliminates the need for a concealing structure, as well as considerations regarding the structural strength and dustproof capabilities of such a structure. The upper surface of the base 10 has no seams, preventing foreign objects from entering the base 10.

[0081] In some embodiments of the present invention, please refer to Figure 4 and Figure 5The base includes a first main body 11 and an extension structure 12, which extends from the first main body 11 toward the column 20. The column 20 includes a second main body 22 and a covering structure 23, which extends from the second main body 22 toward the first main body 11 and covers the extension structure (12), and the covering structure 23 is slidably connected to the extension structure 12. Specifically, the extension structure 12 has a third sliding engagement portion 61 on the side facing the covering structure 23, and the covering structure 23 has a fourth sliding engagement portion 62 that is slidably connected to the third sliding engagement portion 61.

[0082] The base 10 is fixedly installed, and the column 20 slides horizontally relative to the base 10. The extension structure 12 extends from the first main body 11 toward the column 20. It can be understood that the extension structure 12 is bent and connected to the first main body 11, forming a bent structure, a stepped structure, etc., between the extension structure 12 and the first main body 11. The cover structure 23 extends from the second main body 22 toward the first main body 11. It can be understood that the cover structure 23 is bent and connected to the second main body 22, forming a bent structure, a stepped structure, etc., between the cover structure 23 and the second main body 22. The extension structure 12 and the cover structure 23 have facing surfaces, and a third sliding fit part 61 and a fourth sliding fit part 62 are provided between the extension structure 12 and the cover structure 23. The first main body 11 is the main structure of the base 10, and the second main body 22 is the main structure of the column 20. Both are horizontally or nearly horizontally arranged. Therefore, the space between the extension structure 12 and the covering structure 23 is not exposed, which can hide the third sliding mating part 61 and the fourth sliding mating part 62, preventing dust and foreign objects from entering the interior of the base 10. Moreover, the shielding structure is not required, which reduces the space occupied in the length direction. For ease of description, the component formed by the third sliding mating part 61 and the fourth sliding mating part 62 is referred to as the second guide structure.

[0083] By respectively setting the third sliding engagement portion 61 and the fourth sliding engagement portion 62 in the extension structure 12 and the covering structure 23, the third sliding engagement portion 61 and the fourth sliding engagement portion 62 are concealed and not exposed on the top of the base 10. This reduces external dust and eliminates the need for a shielding structure, as well as consideration of the structural strength and dustproof capability of the shielding structure. The upper surface of the base 10 has no seams, preventing foreign objects from entering the base 10.

[0084] In some embodiments of the present invention, please refer to Figure 4 and Figure 5There are two extension structures 12, which are respectively connected to the opposite sides of the first main body 11 in the second direction; there are two covering structures 23, which are respectively connected to the opposite sides of the second main body 22 in the second direction. The two extension structures 12 and the two covering structures 23 are arranged in a one-to-one correspondence, and a third sliding fit part 61 and a fourth sliding fit part 62 are provided between each extension structure 12 and the corresponding covering structure 23.

[0085] In some embodiments of the present invention, please refer to Figure 4 and Figure 5 Both the first main body portion 11 and the second main body portion 22 are plate-shaped. Understandably, the first main body portion 11 and the second main body portion 22 are not necessarily completely flat, but are roughly flat, and the surface of the main body portion may have reinforcing structures such as protrusions.

[0086] In some embodiments of the present invention, please refer to Figure 4 and Figure 5 The extension structure 12 has a first mating surface 120, and the covering structure 23 has a second mating surface 230. The first mating surface 120 and the second mating surface 230 are slidably engaged with each other, and are arranged opposite to each other. Specifically, the first mating surface 120 and the second mating surface 230 are either horizontally arranged, vertically arranged, or inclined. A third sliding mating part 61 and a fourth sliding mating part 62 are respectively disposed on the first mating surface 120 and the second mating surface 230, forming a sliding connection between the covering structure 23 and the extension structure 12.

[0087] The position and angle of the first mating surface 120 and the second mating surface 230 do not affect the sliding connection between the covering structure 23 and the extension structure 12, and the first mating surface 120 and the second mating surface 230 can be in a hidden state.

[0088] In some embodiments of the present invention, the extension structure 12 includes a first extension portion 121 that is bent and connected to the first main body portion 11, the covering structure 23 includes a first covering portion 231 that is bent and connected to the second main body portion 22, the first covering portion 231 is disposed on the outside of the first extension portion 121, the third sliding engagement portion 61 is disposed on the first extension portion 121, and the fourth sliding engagement portion 62 is disposed on the first covering portion 231.

[0089] The first extension 121 extends from the first main body 11 toward the column 20, thus making the cross-section of the extension structure 12 L-shaped. The first cover 231 extends from the second main body 22 toward the first main body 11, thus making the cross-section of the cover structure 23 L-shaped. The side of the first extension 121 closer to the first main body 11 is the inner side of the first extension 121, and the side of the first extension 121 farther from the first main body 11 is the outer side of the first extension 121. By providing the first cover 231 on the outer side of the first extension 121, the left and right sides of the base 10 are covered.

[0090] The surfaces facing each other of the first extension 121 and the first cover 231 are the first mating surface 120 and the second mating surface 230, respectively. The third sliding mating part 61 is disposed on the first extension 121, and the fourth sliding mating part 62 is disposed on the first cover 231. This is equivalent to disposing the third sliding mating part 61 and the fourth sliding mating part 62 on the side of the base 10 and the side of the column 20, respectively. The side of the column 20 can cover the side of the base 10, thus achieving the concealment of the second guide structure.

[0091] In some embodiments, the first main body 11 and the first extension 121 are vertically connected, the first main body 11 is horizontally disposed, the first extension 121 is vertically disposed, and correspondingly, the first mating surface 120 is vertically disposed. Alternatively, the first main body 11 and the first extension 121 are connected at an obtuse or acute angle, the first main body 11 is horizontally disposed, the first extension 121 is inclined, and correspondingly, the first mating surface 120 is inclined relative to the horizontal plane.

[0092] In some embodiments, the second main body portion 22 and the first cover portion 231 are vertically connected, the second main body portion 22 is horizontally disposed, the first cover portion 231 is vertically disposed, and correspondingly, the second mating surface 230 is vertically disposed. Alternatively, the second main body portion 22 and the first cover portion 231 are connected at an obtuse or acute angle, the second main body portion 22 is horizontally disposed, the first cover portion 231 is inclined, and correspondingly, the second mating surface 230 is inclined relative to the horizontal plane.

[0093] In some embodiments, the first extension 121 and the third sliding engagement portion 61 are an integral structure. And / or, the first cover portion 231 and the fourth sliding engagement portion 62 are an integral structure.

[0094] In some embodiments of the present invention, please refer to Figure 4The extension structure 12 includes a first extension 121 and a second extension 122. The first extension 121 extends from the first main body 11 toward the second main body 22, and the second extension 122 extends from the first extension 121 toward the covering structure 23. The covering structure 23 includes a first covering portion 231 and a second covering portion 232. The first covering portion 231 extends from the second main body 22 toward the first main body 11, and the second covering portion 232 extends from the first covering portion 231 toward the first extension 121. A third sliding fit portion 61 is disposed on the second extension 122, and a fourth sliding fit portion 62 is disposed on the second covering portion 232. The surfaces facing each other of the second extension 122 and the second covering portion 232 are the first mating surface 120 and the second mating surface 230, respectively.

[0095] The first main body 11, the first extension 121, and the second extension 122 are sequentially bent and connected. The first extension 121 extends from the first main body 11 toward the second main body 22, which can be understood as the first extension 121 extending upward from the first main body 11. The second extension 122 extends from the first extension 121 toward the covering structure 23, which can be understood as the second extension 122 extending horizontally from the first extension 121. The second main body 22, the first covering 231, and the second covering 232 are sequentially bent and connected. The first covering 231 extends from the second main body 22 toward the first main body 11, which can be understood as the first covering 231 extending downward from the second main body 22. The second covering 232 extends from the first covering 231 toward the first extension 121, which can be understood as the second covering 232 extending horizontally from the first covering 231.

[0096] By setting the first extension 121 and the second extension 122, as well as the first cover 231 and the second cover 232, the third sliding fit part 61 and the fourth sliding fit part 62 are located between the second extension 122 and the second cover 232, and the second extension 122 forms a shield for the second guide structure, thereby hiding the second guide structure.

[0097] In some embodiments, the second extension 122 is located above the second cover 232, or the second extension 122 is located below the second cover 232.

[0098] In some embodiments, the first main body 11 and the first extension 121 are perpendicular to each other, and the first extension 121 and the second extension 122 are perpendicular to each other. The first main body 11 and the second extension 122 are both horizontally arranged, while the first extension 121 is vertically arranged, which can better hide the second guide structure. Correspondingly, the first mating surface 120 is horizontally arranged. In other embodiments, the first extension 121 may also be inclined relative to the horizontal plane.

[0099] In some embodiments, the second main body portion 22 and the first cover portion 231 are perpendicular to each other, and the first cover portion 231 and the second cover portion 232 are perpendicular to each other. Both the second main body portion 22 and the second cover portion 232 are horizontally arranged, while the first cover portion 231 is vertically arranged, which can better conceal the second guide structure. Correspondingly, the second mating surface 230 is horizontally arranged. In other embodiments, the first cover portion 231 may also be inclined relative to the horizontal plane.

[0100] In some embodiments, the second extension 122 and the third sliding engagement portion 61 are integrally formed; and / or, the second cover portion 232 and the fourth sliding engagement portion 62 are integrally formed.

[0101] In some embodiments of the present invention, please refer to Figure 5 The extension structure 12 includes a first extension 121 that is bent and connected to the first main body 11; the covering structure 23 includes a first covering 231, a second covering 232, and a third covering 233. The first covering 231 extends from the second main body 22 toward the first main body 11, the second covering 232 extends from the first covering 231 toward the first extension 121, and the third covering 233 extends from the second covering 232 toward the second main body 22. The third covering 233 is disposed on the outside of the first extension 121, a third sliding fit part 61 is disposed on the first extension 121, and a fourth sliding fit part 62 is disposed on the third covering 233. The surfaces of the first extension 121 and the third covering 233 facing each other are the first mating surface 120 and the second mating surface 230, respectively.

[0102] The first extension 121 extends from the first main body 11 toward the second main body 22, which can be understood as the first extension 121 extending upward from the first main body 11. The second main body 22, the first covering 231, the second covering 232, and the third covering 233 are sequentially bent and connected. The first covering 231 extends from the second main body 22 toward the first main body 11, which can be understood as the first covering 231 extending downward from the second main body 22. The second covering 232 extends from the first covering 231 toward the first extension 121, which can be understood as the second covering 232 extending horizontally from the first covering 231. The third covering 233 extends from the second covering 232 toward the second main body 22, which can be understood as the third covering 233 extending upward from the second covering 232.

[0103] By placing the second guide structure between the first extension 121 and the third covering 233, the second guide structure is concealed by the covering structure 23.

[0104] In some embodiments, the first main body 11 and the first extension 121 are vertically connected. The first main body 11 is horizontally disposed, the first extension 121 is vertically disposed, and correspondingly, the first mating surface 120 is vertically disposed.

[0105] In some embodiments, the second main body portion 22 and the first cover portion 231 are vertically connected, the first cover portion 231 and the second cover portion 232 are vertically connected, and the second cover portion 232 and the third cover portion 233 are vertically connected, so that the cross-section of the cover structure 23 is U-shaped and the opening of the U-shape faces upward. This increases the overall strength of the cover structure 23. Correspondingly, the second mating surface 230 is vertically arranged.

[0106] In some embodiments, the first extension 121 and the third sliding engagement portion 61 are integrally formed; and / or, the third cover portion 233 and the fourth sliding engagement portion 62 are integrally formed.

[0107] In some embodiments of the present invention, the third sliding engagement part 61 is a slide rail, and the fourth sliding engagement part 62 is a slider or a groove. Specifically, a slide rail is fixed on the extension structure 12, and a slider is fixed on the covering structure 23, with the slider slidably disposed on the slide rail; or, a groove is provided on the covering structure 23, with the slide rail and the groove interlocking to allow the column 20 to move along the slide rail.

[0108] The horizontal movement of the column 20 is guided by the cooperation of the slide rail and the slider, or the cooperation of the slide rail and the groove.

[0109] In some embodiments, both the slide rail and the slider have a dovetail-shaped cross-section.

[0110] In some embodiments of the present invention, the medical bed further includes a vertical adjustment component 80, which is used to drive the bed body 50 to rise and fall in the vertical direction, thereby realizing the lifting and lowering movement of the bed body 50. Specifically, the vertical drive component has a vertical motion output end, which is fixedly connected to the lifting member 30. The lifting member 30 is fixedly connected to the bed body 50 via a trailer 40, thereby driving the bed body 50 to rise and fall.

[0111] In some embodiments, the vertical adjustment assembly 80 may include a motor, a reducer, an encoder, and a lead screw assembly, which are sequentially connected in a transmission manner. The nut block of the lead screw assembly is fixedly connected to the lifting member 30, and the encoder is used to detect the number of rotations of the lead screw.

[0112] In some embodiments of the present invention, please refer to Figure 6The column 20 or base 10 is also equipped with a horizontal adjustment assembly 70, which includes a driver 71, a timing belt assembly 73, and a clutch 72. The driver 71 drives the timing belt assembly 73, whose belt 732 is fixedly connected to the column 20. The driver 71 can be selectively connected to or disconnected from the timing belt assembly 73 via the clutch 72. The horizontal adjustment assembly 70 is used to drive the bed 50 to move horizontally, allowing patients lying on the bed 50 to enter the aperture of the CT scanner through the horizontal movement of the bed 50.

[0113] The horizontal adjustment assembly 70 is used to drive the column 20 to move horizontally, and the horizontal adjustment assembly 70 can output linear motion. The driver 71 can be selectively connected to or disengaged from the synchronous belt assembly 73 via the clutch 72. This can be understood as the driver 71 being connected to or disengaged from the synchronous belt assembly 73 via the clutch 72. When the driver 71 is connected to the synchronous belt assembly 73 via the clutch 72, the drive output shaft 711, the clutch 72, and the pulley 731 of the synchronous belt assembly 73 are sequentially connected. The inner and outer moving rings 721 and 722 of the clutch 72 are engaged, thus the driver 71 can drive the column 20 to move horizontally. When the driver 71 is disengaged from the synchronous belt assembly 73 via the clutch 72, the inner and outer moving rings 721 and 722 of the clutch 72 are disengaged, and the power of the driver 71 cannot be transmitted to the synchronous belt assembly 73.

[0114] The clutch 72 allows the column 20 to be selectively driven by the leveling assembly 70. The column 20 can be driven directly by the leveling assembly 70, or it can be moved by an external force. When the column 20 is moved by an external force, the inner ring 721 and outer ring 722 of the moving element of the clutch 72 disengage, eliminating the need to overcome the internal resistance of the drive 71 and the tension of the belt 732. This reduces the external thrust required for the column 20 and makes operation easier.

[0115] In some embodiments of the present invention, please refer to Figure 6 The timing belt assembly 73 is disposed between the driver 71 and the clutch 72. The axial directions of the driver 71 (the axial direction of the motion output shaft 711), the clutch 72, and the timing belt assembly 73 (the axial direction of the pulley 731) are parallel or coincident with each other. In the axial direction, the timing belt assembly 73 is disposed between the driver 71 and the clutch 72.

[0116] In related technologies, the typical structural sequence of a horizontal adjustment component is: timing belt assembly - clutch - driver. However, in scenarios where the timing belt is placed on one side, it occupies a significant amount of space on that side, resulting in an excessively wide patient carrier and greatly impacting space utilization. In this embodiment, the timing belt assembly 73 is located in the middle, occupying less space on one side and resulting in a more rational layout.

[0117] In some embodiments, please refer to Figure 6 and Figure 7 The pulley 731 of the synchronous belt assembly 73 is hollow. The motion output shaft 711 of the driver 71 passes through the pulley 731 and connects to the inner ring 721 of the mover of the clutch 72. One axial end of the pulley 731 is connected to the outer ring 722 of the mover of the clutch 72. The hollow design of the pulley 731 can be understood as having a central hole 7311 extending through both ends in the axial direction. The motion output shaft 711 of the driver 71 passes through the central hole 7311 and connects to the inner ring 721 of the mover. When the column 20 is moved by the horizontal adjustment assembly 70, the motion output shaft 711 of the driver 71 drives the inner ring 721 of the mover to move. The inner ring 721 and the outer ring 722 of the mover mesh with each other, transmitting power to the pulley 731, which in turn drives the column 20 to move horizontally through the synchronous belt assembly 73. When the column 20 is driven by an external thrust, the inner ring 721 and the outer ring 722 of the mover separate from each other, and the transmission connection between the timing belt assembly 73 and the driver 71 is broken. The column 20 can be driven simply by overcoming the internal resistance of the timing belt assembly 73.

[0118] By setting the pulley 731 as a hollow structure, the motion output shaft 711 of the drive 71 can pass through the pulley 731 and connect to the moving inner ring 721 of the clutch 72, thereby realizing the placement of the synchronous belt assembly 73 between the drive 71 and the clutch 72.

[0119] In some embodiments, the driver 71 includes a motor and a reducer, the motor shaft is connected to the motion input shaft of the reducer, and the motion output shaft 711 of the reducer is the motion output shaft 711 of the driver 71.

[0120] Optionally, the motor's motion output end is equipped with an encoder, typically an absolute encoder, to detect the number of rotations of the motor.

[0121] In some embodiments, the leveling assembly 70 further includes a level position sensor for detecting the absolute position of the horizontal degrees of freedom of the bed 50. The level position sensor may be an encoder, such as a magnetic scale encoder, a wire encoder, etc.

[0122] In some embodiments, one axial end of the pulley 731 is fixedly connected to the outer ring 722 of the moving element of the clutch 72, and the other axial end of the pulley 731 is connected to the driver 71 via a bearing. That is, the other axial end of the pulley 731 is rotatably supported on the housing structure of the driver 71 via a bearing. In this way, by providing a bearing on the driver 71 to support the pulley 731, the rotation of the pulley 731 can be made more stable.

[0123] In some embodiments of the present invention, please refer to Figure 8 A sensor 24 for detecting obstacles is installed at the bottom of the column 20. The bottom of the column 20 is positioned close to the ground. The sensor 24 is used to detect obstacles. When an obstacle is detected, an alarm can be triggered and the column 20 can be braked or otherwise activated.

[0124] During the movement of the column 20, there is a risk of collision to the operator, patient's family, or surrounding structures. The sensor 24 can remind the user of the collision risk and reduce the possibility of collision.

[0125] In some embodiments, sensor 24 is a photoelectric sensor with a suitable detection area (e.g., about 50 mm). When column 20 moves horizontally, if a foreign object that could easily be entangled is detected, movement is immediately stopped until the operator eliminates the risk of the foreign object, at which point the error can be resolved.

[0126] Optionally, the photoelectric sensor is a diffuse reflection type, which can adjust the detection area to prevent frequent errors caused by excessive sensing distance or conflict with the machine's own components. Sensor 24 selection can consider anti-interference capabilities, ensuring functionality is not affected under high brightness and complex lighting conditions.

[0127] In some embodiments, sensors 24 are provided at the four corners of the column 20 to detect obstacles at various locations and reduce the risk of collision.

[0128] In some embodiments of the present invention, the surface of the column 20 near the ground is smoothly provided. This can be understood as the edges and corners of the column 20 near the ground being rounded or other smooth structures. This serves two purposes: first, it can prevent people from being scratched; second, even if the column 20 collides with an object or person, the collision will not be too severe.

[0129] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A medical bed, characterized by: The device includes a lifting component (30), a trailer (40), a bed (50), a base (10), and a column (20). The column (20) is slidably connected to the base (10), and the lifting component (30) is slidably connected to the column (20). The lifting component (30) is capable of moving up and down relative to the column (20), and the lifting component (30) surrounds the outer periphery of the column (20). One end of the trailer (40) is fixedly connected to the side wall of the lifting component (30). Next, the other end of the trailer (40) is fixedly connected to the bed (50). The bed (50) is fixed to the lower side of the trailer (40). The end of the bed (50) away from the trailer (40) is cantilevered and used to extend into the aperture of the diagnostic and treatment equipment. When the bed (50) extends into the aperture, the bed (50) is positioned closer to the bottom of the aperture, releasing the space below the bed (50) and increasing the diagnostic and treatment space of the diagnostic and treatment equipment.

2. The medical bed according to claim 1, characterized in that: The lower side of the trailer (40) is inclined, so that the bed (50) is inclined relative to the horizontal plane, and the bed (50) gradually rises from the trailer (40) in the direction away from the trailer (40).

3. The medical bed as described in claim 1, characterized in that: The bed body (50) has a first end close to the lifting member (30) and a second end away from the lifting member (30). The height difference between the second end and the first end of the bed body (50) is the deformation amount. The length of the bed body (50) is positively correlated with the deformation amount. The length of the connection area between the bed body (50) and the trailer (40) is negatively correlated with the deformation amount.

4. The medical bed as described in any one of claims 1-3, characterized in that: The outer side of the column (20) is provided with a first sliding engagement part (21), and the inner side of the lifting member (30) is provided with a second sliding engagement part (35), and the second sliding engagement part (35) is slidably connected to the first sliding engagement part (21).

5. A medical bed according to any one of claims 1-3, characterized in that: The column (20) at least partially encloses the base (10).

6. The medical bed according to claim 5, characterized in that: The base (10) includes a first main body (11) and an extension structure (12), the extension structure (12) being formed by extending the first main body (11) toward the column (20); the column (20) includes a second main body (22) and a covering structure (23), the covering structure (23) being formed by extending the second main body (22) toward the first main body (11), the covering structure (23) covering the extension structure (12), and the covering structure (23) being slidably connected to the extension structure (12).

7. The medical bed according to claim 6, characterized in that: The extension structure (12) has a first mating surface (120), and the covering structure (23) has a second mating surface (230). The first mating surface (120) and the second mating surface (230) slide against each other, and the first mating surface (120) and the second mating surface (230) are arranged opposite to each other.

8. The medical bed according to claim 5, wherein: The column (20) or the base (10) is further provided with a horizontal adjustment component (70). The horizontal adjustment component (70) includes a driver (71), a timing belt assembly (73), and a clutch (72). The driver (71) is used to drive the timing belt assembly (73). The belt (732) of the timing belt assembly (73) is fixedly connected to the column (20). The driver (71) can be selectively connected to or separated from the timing belt assembly (73) through the clutch (72). The timing belt assembly (73) is located between the driver (71) and the clutch (72).

9. The medical bed according to claim 8, characterized in that: The pulley (731) of the synchronous belt assembly (73) is hollow. The motion output shaft (711) of the driver (71) passes through the pulley (731) and is connected to the inner ring (721) of the moving part of the clutch (72). One axial end of the pulley (731) is connected to the outer ring (722) of the moving part of the clutch (72).

10. The medical bed according to claim 5, wherein: The bottom of the column (20) is equipped with a sensor (24) for detecting obstacles.

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