Hospital beds and medical scanning devices

Abstract

The application relates to a sickbed and a medical scanning device, the sickbed comprising: a bed frame; a bed plate, which is movably connected with the bed frame; a push chain mechanism, which comprises a driving device and a push chain, the driving device being connected with the push chain, an output end of the push chain being connected with the bed plate, and a pipeline channel being arranged in the push chain; and a functional pipeline, which is arranged in the pipeline channel. When the push chain with the chain dragging function and the bed plate jointly enter a containing cavity, the chain dragging function eliminates the occupation of the scanning space by the chain, thereby releasing more scanning space for a scanning object.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to hospital beds and medical scanning equipment. Background Technology

[0002] In medical scanning equipment such as Magnetic Resonance Imaging (MRI) and Computed Tomography (CT), the bed board can move relative to the bed frame to move the object to be scanned into and out of the scanning device's cavity. During the movement of the bed board relative to the bed frame, the functional pipelines (such as cables and gas lines) connecting the bed board must move together with the bed board.

[0003] In related technologies, medical scanning equipment generally uses push chains to drive the bed board and drag chains to constrain and protect functional pipelines. When the push chain and drag chain move together with the bed board to enter the receiving cavity of the scanning device, they occupy a large space inside the receiving cavity, compressing the scanning space of the object to be scanned.

[0004] Especially for deep-aperture medical scanning equipment, the depth of the receiving cavity is relatively large, the travel distance of the bed board relative to the bed frame into the receiving cavity is relatively long, and the length of the push chain and drag chain is correspondingly longer. As a result, the push chain and drag chain occupy more space in the receiving cavity, and the encroachment on the scanning space of the object to be scanned is more obvious. Utility Model Content

[0005] Therefore, it is necessary to provide a hospital bed and medical scanning device to address the problem that the push chain and drag chain occupy a large space when entering the receiving cavity in medical scanning devices in related technologies, as they move together with the bed board.

[0006] One embodiment of this application provides a hospital bed, the hospital bed comprising:

[0007] bedstead;

[0008] Bed board, which is movably connected to the bed frame;

[0009] The chain pusher mechanism includes a drive unit and a chain pusher. The drive unit is connected to the chain pusher, and the output end of the chain pusher is connected to the bed plate. The chain pusher has internal pipeline channels.

[0010] Functional pipelines are installed within pipeline channels.

[0011] In one embodiment, the push chain includes multiple chain links that are rotatably connected in sequence. Each chain link has a sub-channel through which a functional pipeline passes. The sub-channels of the multiple chain links are connected in sequence to form a pipeline channel.

[0012] In one embodiment, the chain link has an opening on the side away from the pivot, and the opening communicates with a sub-channel to allow functional pipelines to enter the sub-channel;

[0013] The link has an opening on one side that is movably connected to a limiting part; the limiting part has a first position that prevents the functional line from coming out of the opening, and a second position that allows the functional line to enter and exit the sub-channel from the opening.

[0014] In one embodiment, the link has opposing first and second sidewalls, one end of the limiting portion is movably connected to the first sidewall, and the other end is detachably connected to the second sidewall.

[0015] In one embodiment, a chain shaft is provided on the chain link; the output end of the drive device has a sprocket, which meshes with the chain shafts of multiple chain links for transmission.

[0016] In one embodiment, the chain pusher mechanism further includes at least one guide unit, which includes at least one guide portion and has a guide groove.

[0017] In one embodiment, at least one guide unit includes a plurality of guide portions that are detachably connected; and / or,

[0018] There are multiple guide units, which are arranged at intervals.

[0019] In one embodiment, in the forward direction of the push chain, at least one guide unit is located upstream of the sprocket, and / or at least one guide unit is located downstream of the sprocket;

[0020] The forward direction of the push chain is the direction of movement when the push chain moves the bed board into the receiving cavity.

[0021] In one embodiment, the push chain includes a push section, a deflection section and an extension section connected in sequence. The end of the push section away from the deflection section is the output end of the push chain, and the chain shaft at the connection between the push section and the deflection section meshes with a sprocket.

[0022] The extension direction of the propulsion segment intersects with the extension direction of the steering segment, and the extension direction of the extension segment intersects with the extension direction of the steering segment.

[0023] In one embodiment, a guide unit is provided on the movement path of at least one of the push section, the steering section, and the extension section.

[0024] In one embodiment, any two adjacent links are rotatably connected by a pivot.

[0025] An isolation plate is installed inside the chain link, and the sub-channel and the rotating shaft are located on both sides of the isolation plate, so that the sub-channel forms a sandwich that is isolated from the rotating shaft.

[0026] In one embodiment, the functional pipeline includes at least one of a power supply cable, a signal transmission line, and a gas pipeline.

[0027] One embodiment of this application provides a medical scanning device, including a scanning apparatus and any of the hospital beds described in the above embodiments, wherein the scanning apparatus has a receiving cavity for the bed board to enter.

[0028] In the aforementioned hospital bed and medical scanning equipment, the drive unit propels the pusher chain, causing it to move the bed board and transport the object to be scanned into or out of the receiving cavity. During this process, functional pipelines are routed through the pipeline channels within the pusher chain. This allows the functional pipelines to move together with the pusher chain and the bed board. Thus, the pusher chain not only transmits driving force to the bed board, but its internal pipeline channels also guide, constrain, and protect the functional pipelines; in other words, the pusher chain simultaneously functions as a drag chain, eliminating the need for an additional drag chain for the functional pipelines. Consequently, when the pusher chain, which functions as a drag chain, enters the receiving cavity together with the bed board, the drag chain's occupation of the scanning space is eliminated, freeing up more scanning space for the object to be scanned. This is particularly effective in medical scanning equipment with deep apertures and long bed board travel distances, significantly reducing the encroachment on scanning space. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a hospital bed according to one embodiment.

[0030] Figure 2 for Figure 1 A schematic diagram of the pusher mechanism in the diagram.

[0031] Figure 3 for Figure 2 The main view.

[0032] Figure 4 This is a schematic diagram showing the connection relationship between two adjacent links and the functional cable in one embodiment.

[0033] Figure 5 This is a schematic diagram of the structure of a single link in one embodiment.

[0034] Figure 6 This is a schematic diagram showing the connection relationship of the first guide walls of two adjacent chain links in one embodiment.

[0035] Figure label:

[0036] 100. Bed frame;

[0037] 200. Bed board;

[0038] 300. Drive unit; 310. Sprocket;

[0039] 400, Push chain; 401, Pipeline channel; 410, Chain link; 411, Separator plate; 410a, Sub-channel; 410b, Opening; 412, Limiting part; 413, Side wall; 413a, First side wall; 413b, Second side wall; 4131, Connecting lug; 420, Rotating shaft; 430, Chain shaft; 400a, Push section; 400b, Turning section; 400c, Extension section;

[0040] 500. Functional pipelines;

[0041] 600, guide unit; 610, guide section; 601, guide groove; 611, guide wall; 611a, first guide wall; 611b, second guide wall; 600a, first guide unit; 600b, second guide unit; 600c, third guide unit. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, 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", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0044] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] Please combine Figures 1 to 3 This application provides a hospital bed, which includes a bed frame 100, a bed board 200, a push chain mechanism, and functional pipelines 500. The bed board 200 is movably connected to the bed frame 100. The push chain mechanism includes a drive device 300 and a push chain 400. The drive device 300 is connected to the push chain 400, and the output end of the push chain 400 is connected to the bed board 200. A pipeline channel 401 is provided inside the push chain 400. The functional pipelines 500 pass through the pipeline channel 401.

[0049] The bed frame 100 serves as a support structure for the bed board 200. Optionally, one of the bed frame 100 and the bed board 200 may be equipped with a guide rail, while the other may be equipped with rollers. The rollers and guide rails engage in a rolling manner, thereby guiding the movement of the bed board 200 relative to the bed frame 100 and reducing the friction between them. Alternatively, the bed frame 100 may have rollers, and the bed board 200 may have a guide rail; or, the bed frame 100 may have a guide rail, and the bed board 200 may have rollers. Optionally, one of the bed frame 100 and the bed board 200 may be equipped with a guide rail, while the other may have a slider. The slider engages in a sliding manner with the guide rail, thereby guiding the movement of the bed board 200 relative to the bed frame 100 and reducing the friction between them. Alternatively, the bed frame 100 may have a slider, and the bed board 200 may have a guide rail; or, the bed frame 100 may have a guide rail, and the bed board 200 may have a slider.

[0050] The drive unit 300 includes a drive element, such as a motor. The drive element provides the driving force to move the pusher chain 400. The drive unit 300 may also include a reducer connected to the output end of the drive element. The drive element transmits the driving force to the pusher chain 400 through the reducer.

[0051] The functional tubing 500 may include any one, any two, or all three of the following: a power supply cable, a signal transmission line, and a gas line. If respiratory monitoring of the subject is required during scanning, the gas line can be used to deliver breathing gas.

[0052] The extension direction of the pipeline channel 401 is consistent with the extension direction of the push chain 400, so that the functional pipeline 500 passing through the pipeline channel 401 can move together with the push chain 400 and be protected, constrained and guided by the push chain 400.

[0053] When it is necessary to move the object to be scanned (such as a patient) into or out of the receiving cavity of the medical scanning equipment, the pusher chain 400 can be driven by the drive device. Since the output end of the pusher chain 400 is connected to the bed board 200, the forward or backward movement of the pusher chain 400 can drive the bed board 200 to move relative to the bed frame 100, thereby allowing the bed board 200 to move the object to be scanned into or out of the receiving cavity.

[0054] In the aforementioned hospital bed, the drive unit 300 drives the pusher chain 400 to move, causing the pusher chain 400 to move the bed board 200 to send the object to be scanned into or out of the receiving cavity. During this process, the functional pipeline 500 passes through the pipeline channel 401 inside the pusher chain 400. This allows the functional pipeline 500 to move together with the pusher chain 400 and the bed board 200. Thus, the pusher chain 400 not only transmits driving force to the bed board 200, but its internal pipeline channel 401 also guides, constrains, and protects the functional pipeline 500. In other words, the pusher chain 400 simultaneously functions as a drag chain, eliminating the need for an additional drag chain for the functional pipeline 500. Therefore, when the pusher chain 400, which functions as a drag chain, enters the receiving cavity together with the bed board 200, the drag chain's occupation of the scanning space is eliminated, thereby freeing up more scanning space for the object to be scanned. This is especially effective in medical scanning equipment with deep apertures and long bed board travel distances, significantly reducing the encroachment on scanning space.

[0055] Please combine Figure 4 and Figure 5 In one embodiment, the push chain 400 includes a plurality of chain links 410 connected in sequence. Each chain link 410 has a sub-channel 410a through which the functional pipeline 500 passes. The sub-channels 410a of the plurality of chain links 410 are connected in sequence to form a pipeline channel 401.

[0056] In this embodiment, each link 410 has a sub-channel 410a inside. When multiple links 410 are connected to each other, these sub-channels 410a are interconnected to form a continuous pipeline channel 401 that runs through the entire push chain 400. The functional pipeline 500 is installed in this continuous channel. When the push chain 400 drives the bed board 200 to move, the push chain 400 moves flexibly through the rotational connection of adjacent links 410, ensuring the bending adaptability of the push chain 400 during movement. At the same time, the functional pipeline 500 can move with the push chain 400 within the interconnected sub-channels 410a.

[0057] Please combine Figures 3 to 5 In one embodiment, any two adjacent links 410 are rotatably connected by a pivot 420. A partition plate 411 is provided inside the link 410, and the sub-channel 410a and the pivot 420 are respectively located on both sides of the partition plate 411, so that the sub-channel 410a forms a sandwich layer isolated from the pivot 420.

[0058] In this embodiment, two adjacent links 410 are rotatably connected by a pivot 420. A partition plate 411 is provided inside each link 410, placing the pivot 420 and the sub-channel 410a on opposite sides of the partition plate 411, thus creating a sandwich structure isolated from the pivot 420. When the functional pipeline 500 moves with the pusher chain 400, it remains within the protected sandwich space, without contact with the movement of the pivot 420. In other words, the physical separation by the partition plate 411 ensures that the movement of the functional pipeline 500 and the rotation of the pivot 420 do not interfere with each other, thereby preventing damage such as friction and compression caused by the rotation of the pivot 420. Simultaneously, the sandwich design maintains the independence of the pipeline channel 401, without increasing the volume of the pusher chain 400, meaning it does not occupy additional space within the receiving cavity.

[0059] In one embodiment, the link 410 includes two opposing sidewalls 413, defined as a first sidewall 413a and a second sidewall 413b, respectively. Each sidewall 413 has connecting lugs 4131 at both its front and rear ends.

[0060] The connecting ears 4131 of the sidewalls 413 of two adjacent links 410 are stacked on each other, and the rotating shaft 420 passes through the two stacked connecting ears 4131, thereby rotatably connecting the sidewalls 413 of the two adjacent links 410, that is, rotatably connecting the two adjacent links 410.

[0061] Specifically, the connecting ears 4131 of the first sidewalls 413a of two adjacent links 410 are stacked on top of each other, and the connecting ears 4131 of the second sidewalls 413b of two adjacent links 410 are stacked on top of each other. The same pivot 420 connecting the two adjacent links 410 is simultaneously passed through the stacked connecting ears 4131 of the two first sidewalls 413a and the stacked connecting ears 4131 of the two second sidewalls 413b, thereby enabling the two adjacent links 410 to be rotatably connected.

[0062] Please combine Figures 3 to 5 In one embodiment, the link 410 has an opening 410b on the side away from the pivot 420, and the opening 410b communicates with the sub-channel 410a so that the functional pipeline 500 can enter the sub-channel 410a.

[0063] The link 410 is movably connected to a limiting part 412 on one side having an opening 410b. The limiting part 412 has a first position that prevents the functional line 500 from disengaging from the opening 410b, and a second position that allows the functional line 500 to enter and exit the sub-channel 410a from the opening 410b.

[0064] The limiting part 412 is movably connected to the link 410 and can switch between a first position and a second position by moving relative to the link 410. During normal use, the limiting part 412 is in the first position, at which time the limiting part 412 at least partially blocks the opening 410b to prevent the functional pipeline 500 from coming out of the opening 410b, ensuring that the functional pipeline 500 is reliably restrained. When the limiting part 412 is in the second position, the obstruction of the opening 410b is released, at which time the functional pipeline 500 can be freely installed into or removed from the sub-channel 410a through the opening 410b, facilitating the installation, maintenance, and replacement of the functional pipeline 500.

[0065] Especially when the joints at both ends of the functional pipeline 500 are large, if the functional pipeline 500 is directly passed through the pipeline channel 401 along its length, it will be difficult for the joints at the ends of the functional pipeline 500 to pass through the pipeline channel 401, making it difficult to install the functional pipeline 500 into or remove it from the pipeline channel 401.

[0066] However, in this embodiment, for cases where the connectors at both ends of the functional pipeline 500 are large, the limiting part 412 can be switched to the second position, allowing the functional pipeline 500 to enter and exit through the opening 410b. In this case, it is not necessary to force the large connectors through along the length of the pipeline channel 401. Instead, the functional pipeline 400 with the large connectors can be simultaneously inserted laterally into multiple sub-channels 410a through the opening 410b, and then the limiting part 412 can be switched back to the first position to prevent the functional pipeline 500 from coming out. This reduces the difficulty of inserting the functional pipeline 500 with large connectors and ensures reliable constraint of the functional pipeline 500 within the pipeline channel 401 through the limiting part 412.

[0067] Please combine Figures 3 to 5 In one embodiment, the link 410 has a first sidewall 413a and a second sidewall 413b opposite to each other, one end of the limiting part 412 is movably connected to the first sidewall 413a, and the other end is detachably connected to the second sidewall 413b.

[0068] In this embodiment, the link 410 has opposing first sidewalls 413a and second sidewalls 413b. One end of the limiting part 412 is mounted to the first sidewall 413a by a hinge or other movable connection and can rotate around the connection. The other end of the limiting part 412 is detachably connected to the second sidewall 413b (e.g., by a snap-fit ​​connection, a pin connection, a magnetic adsorption connection, etc.).

[0069] When the push chain 400 is operating normally, the limiting part 412 is connected to the second side wall 413b and is in the first position to prevent the functional pipeline 500 from coming out. If it is necessary to install or remove the functional pipeline 500, the limiting part 412 is disconnected from the second side wall 413b, and the limiting part 412 rotates around its connection with the first side wall 413a, thereby releasing the obstruction of the opening 410b and placing it in the second position, which facilitates the installation or removal of the functional pipeline 500.

[0070] One end of the limiting part 412 is movably connected to the first side wall 413a, and the limiting part 412 is detachably connected to the second side wall 413b, which can quickly switch the limiting part 412 between the first position and the second position, thereby improving the installation and maintenance efficiency of the functional pipeline 500.

[0071] like Figure 4 As shown, optionally, the limiting part 412 is a limiting rod, which has a very small blocking area on the opening 410b, only enough to prevent the functional pipeline 500 from detaching. In other embodiments, the limiting part 412 can also be a limiting plate, which has a larger blocking area on the opening 410b.

[0072] In one embodiment, the limiting part 412 and the first sidewall 413a may not be hinged. For example, the limiting part 412 and the first sidewall 413a may be integrally formed. At the connection between the two, the elastic deformation of the material itself can be used to moderately bend the limiting part 412 relative to the first sidewall 413a, thus simplifying the structure, reducing costs, and ensuring smooth operation. The limiting part 412 may be made of plastic, and the first sidewall 413a may be made of plastic.

[0073] In one embodiment, a chain shaft 430 is provided on the chain link 410. The output end of the drive device 300 has a sprocket 310, which engages with the chain shafts 430 of the plurality of chain links 410 for transmission.

[0074] Specifically, the output end of the drive unit 300 can be the output end of the reducer.

[0075] When the drive unit 300 is started, the sprocket 310 rotates and drives the chain shaft 430 meshing with it to move. This allows the chain shafts 430 of multiple chain links 410 to pass through the sprocket 310 in sequence, thereby driving the push chain 400 to move as a whole, realizing the movement of the bed board 200. This meshing transmission method has a compact structure, stable transmission, and can accurately control the movement direction and stroke of the push chain 400.

[0076] Please combine Figures 3 to 5 In one embodiment, any two adjacent links 410 are rotatably connected by a pivot 420, which also serves as a link 430.

[0077] Two adjacent chain links 410 are rotatably connected by a rotating shaft 420, which also serves as a chain shaft 430, meshing with the sprocket 310 at the output end of the drive unit 300. When the drive unit 300 is started and the sprocket 310 rotates, it drives the push chain 400 to move through meshing with the rotating shaft 420 (chain shaft 430), thereby driving the bed plate 200 to move. This achieves the integration of the functions of the rotating shaft 420 and the chain shaft 430, simplifying the structure and reducing the number of parts and assembly complexity.

[0078] Please combine Figures 3 to 5 In one embodiment, at least one axle 430 is provided between two pivots 420 passing through both ends of the same link 410. At the same time, the pivot 420 also serves as the axle 430, that is, three axles 430 are passed through one link 410.

[0079] The pivots 420 at both ends of the same link 410 also function as chain shafts 430, and at least one chain shaft 430 is provided between two pivots 420, so that at least three chain shafts 430 are threaded on a single link 410, meshing with the sprocket 310 at the output end of the drive device 300. When the drive device 300 is working, the sprocket 310 efficiently transmits power to the push chain 400 by sequentially meshing with multiple chain shafts 430 on the same link 410, driving the bed plate 200 to move. By further increasing the number of chain shafts 430, the meshing contact area and stability between the link 430 and the sprocket 310 are improved, enhancing the smoothness and reliability of the push chain 400's movement. At the same time, since the pivots 420 also function as chain shafts 430, the number of parts can be reduced, the structure simplified, and assembly difficulty and manufacturing costs reduced.

[0080] Link 410 includes two oppositely arranged sidewalls 413, defined as first sidewall 413a and second sidewall 413b respectively. The chain shaft 430 between the two pivots 420 at both ends of the same link 410 passes through both the first sidewall 413a and the second sidewall 413b.

[0081] In one embodiment, the chain shaft 430 and the sub-channel 410a are respectively placed on both sides of the partition plate 411, so that the sub-channel 410a forms a sandwich layer isolated from the chain shaft 430. When the functional pipeline 500 moves with the push chain 400, the functional pipeline 500 can be kept in the protected sandwich space and has no contact with the movement of the chain shaft 430. This also isolates the functional pipeline 500 from the sprocket 310, thereby avoiding damage such as friction and compression to the functional pipeline 500 caused by the movement of the chain shaft 430 and the sprocket 310.

[0082] Please refer to Figure 3In one embodiment, the pusher mechanism further includes at least one guide unit 600, which includes at least one guide portion 610. The guide portion 610 is provided with a guide groove 601, which is used to constrain the movement path of the pusher 400.

[0083] In actual use, the guide part 610 remains stationary. Specifically, a support component (such as a pusher box or support frame) can be configured for the pusher mechanism to fix the guide part 610 to the support component, or the guide part 610 can be fixed to the bed frame 100.

[0084] Specifically, a guide unit 600 may include a guide portion 610 or a plurality of guide portions 610 connected in sequence.

[0085] In this embodiment, when the drive device 300 drives the sprocket 310 to rotate and thus drives the push chain 400 to move, the push chain 400 will pass through the guide groove 601, thereby constraining the movement trajectory of the push chain 400 through the guide groove 601, ensuring that the bed board 200 moves smoothly.

[0086] Optionally, the guide groove 601 is arranged on the moving path of the chain shaft 430. When the drive device 300 drives the sprocket 310 to rotate, thereby driving the push chain 400 to move, the chain shaft 430 will pass through the guide groove 601, thus constraining the moving trajectory of the chain shaft 430 through the guide groove 601, thereby constraining the moving path of the push chain 400 and ensuring that the bed board 200 moves smoothly.

[0087] refer to Figure 3 In one embodiment, at least one guide unit 600 includes a plurality of guide portions 610 that are detachably connected. One end of each guide portion 610 has a first connecting structure 6111, and the other end has a second connecting structure. The first connecting structure 6111 of any two adjacent guide portions 610 is connected to the second connecting structure of the other.

[0088] Optionally, the first connecting structure 6111 is a protrusion, and the second connecting structure is a slot, with the protrusion engaging with the slot.

[0089] Specifically, refer to Figure 3 The guide section 610 includes two guide walls 611 disposed opposite to each other, which are defined as a first guide wall 611a and a second guide wall 611b respectively. A guide groove 601 is formed between the first guide wall 611a and the second guide wall 611b.

[0090] Specifically, each guide wall 611 has a first connecting structure 6111 at one end and a second connecting structure at the other end. When multiple guide parts 610 are connected in sequence, two adjacent guide walls 611 can be connected through the first connecting structure 6111 and the second connecting structure.

[0091] like Figure 6 As shown, one end of the first guide wall 611a has a first connecting structure 6111, and the other end has a second connecting structure (not shown). Correspondingly, one end of the second guide wall 611b has the first connecting structure 6111, and the other end has a second connecting structure (not shown).

[0092] When multiple guide sections 610 are connected in sequence, two adjacent first guide walls 611a can be connected by a first connecting structure 6111 and a second connecting structure, and two adjacent second guide walls 611b can be connected by a first connecting structure 6111 and a second connecting structure.

[0093] In this embodiment, the guide unit 600 consists of multiple guide parts 610 that are detachably connected sequentially to a second connecting structure via a first connecting structure 6111. The multiple guide parts 610 of the guide unit 600 collectively provide a precise guiding path for the chain shaft 430 of the push chain 400, ensuring stable and smooth movement of the push chain 400. When a guide part 610 becomes worn or damaged, it can be quickly replaced by disassembling the corresponding connecting structure, without needing to replace the entire guide unit 600, significantly reducing maintenance costs and operational difficulty.

[0094] Furthermore, the technical solution of this embodiment can flexibly splice or disassemble the number of guide parts 610 in the guide unit 600 according to the actual length of the push chain 400 and the guidance requirements of the position of the guide unit 600, quickly adjust the length of the guide unit 600, and significantly improve the versatility and scenario adaptability of the guide unit 600.

[0095] Please refer to Figure 3 In one embodiment, there are multiple guide units 600, which are arranged at intervals.

[0096] Multiple guide units 600 are spaced apart along the movement path of the pusher chain 400, allowing for segmented guidance of the pusher chain 400. This arrangement of guide units ensures smooth and accurate movement by collectively constraining the movement trajectory of the pusher chain 400 through multiple guide units 600. Furthermore, the flexible placement of the guide units 600 adapts to the bending shape and placement area of ​​the pusher chain 400. It also eliminates the need for an excessively long overall guide structure, reducing structural complexity and manufacturing costs.

[0097] Please refer to Figure 3 In one embodiment, at least one guide unit 600 is located upstream of the sprocket 310 in the forward direction of the pusher chain 400. The forward direction of the pusher chain 400 is the direction of movement when the pusher chain 400 pushes the bed plate 200 into the receiving cavity.

[0098] In this embodiment, in the forward direction in which the pusher chain 400 pushes the bed plate into the receiving cavity, at least one guide unit 600 is arranged upstream of the sprocket 310. When the pusher chain 400 moves, the upstream guide unit 600 first pre-guides the chain shaft 430 through the guide groove, so that the chain shaft 430 maintains a stable trajectory before reaching the area where it meshes with the sprocket 310. That is, the movement direction of the chain link 410 can be constrained in advance, reducing the positional deviation of the chain link 410 when it reaches the meshing area of ​​the sprocket 310, and improving the meshing accuracy and transmission smoothness.

[0099] Please refer to Figure 3 In one embodiment, at least one guide unit 600 is located downstream of the sprocket 310. The forward direction of the push chain 400 is the direction of movement when the push chain 400 pushes the bed plate 200 into the receiving cavity.

[0100] In this embodiment, in the forward direction in which the pusher chain 400 pushes the bed board into the receiving cavity, at least one guide unit 600 is disposed downstream of the sprocket 310. When the pusher chain 400 is driven by the sprocket 310, the downstream guide unit 600 continuously constrains the movement trajectory of the chain shaft 430 through the guide groove, ensuring that the chain link 410, after disengaging from the sprocket 310's meshing area, maintains a stable trajectory. This effectively prevents the chain link 410 downstream of the sprocket 310 from shifting or wobbling due to loss of sprocket support, ensuring the smooth movement of the bed board 200.

[0101] Please refer to Figures 1 to 3 In one embodiment, the push chain 400 includes a push section 400a, a turning section 400b and an extension section 400c connected in sequence. The end of the push section 400a away from the turning section 400b is the output end of the push chain 400. The chain shaft 430 at the connection between the push section 400a and the turning section 400b meshes with the sprocket 310.

[0102] The extension direction of the push section 400a intersects the extension direction of the steering section 400b, and the extension direction of the extension section 400c intersects the extension direction of the steering section 400b.

[0103] In actual use, the bed board 200 moves horizontally. The extension direction of the pushing section 400a can be the same as the moving direction of the bed board 200, which is horizontal. Of course, the extension direction of the pushing section 400a can also be slightly inclined to the horizontal direction; there is no absolute restriction on this. The extension direction of the turning section 400b can be vertical or inclined to the vertical direction. Since the chain shaft 430 at the connection between the pushing section 400a and the turning section 400b meshes with the sprocket 310, it can be understood that the boundary between the pushing section 400a and the turning section 400b is approximately located at the sprocket 310.

[0104] It should be noted that the segmentation logic of the push chain 400 in this embodiment is not a fixed physical segmentation, but a dynamic division based on the current extension direction of the link 410. As the push chain 400 moves, the number of links 410 in the pushing segment 400a, the turning segment 400b, and the extension segment 400c changes in real time.

[0105] The sprocket 310 drives the push chain 400 via the sprocket 430, causing the push bed 200 of the push section 400a to move. The steering section 400b changes the trajectory of the push chain 400. The extension section 400c can be placed on a support component (such as a push chain box or support frame), so that the portion of the push chain 400 away from the bed 200 is supported by the support component, thereby preventing the push chain 400 from drooping too much. The extension direction of the extension section 400c can be horizontal or slightly inclined to the horizontal. Optionally, the extension direction of the extension section 400c is the same as the extension direction of the push section 400a.

[0106] This embodiment ensures the stability of the bed board 200 movement by using the parallel push section 400a and extension section 400c, while utilizing the turning section 400b to flexibly turn and adapt to the equipment space layout. At the same time, the extension section 400c can prevent the push chain 400 from drooping too long.

[0107] Please refer to Figures 1 to 3 In one embodiment, a guide unit 600 is provided on the movement path of at least one of the pushing section 400a, the turning section 400b, and the extension section 400c.

[0108] Specifically Figure 3 In the illustrated embodiment, guide units 600 are arranged along the movement paths of the pushing section 400a, the turning section 400b, and the extension section 400c of the push chain 400. Each guide unit 600 cooperates with the chain shaft 430 through a guide groove 601 to precisely guide the push chain 400 in segments. The guide unit 600 of the pushing section 400a ensures the straightness of the horizontal movement of the bed board 200. The guide unit 600 of the turning section 400b assists the push chain 400 in maintaining trajectory stability during vertical / tilted turns. The guide unit 600 of the extension section 400c guides the subsequent part of the push chain 400 to maintain its stability while supporting the extension section 400c to keep it horizontal and prevent sagging or deviation. In this way, the movement trajectory of the push chain 400 is constrained in all directions, greatly improving the smoothness and reliability of the push chain 400's operation.

[0109] In other embodiments, guide units may be provided on the movement path of any one or any two of the push section 400a, the steering section 400b, and the extension section 400c.

[0110] This application also provides a medical scanning device, including a scanning apparatus and a hospital bed as described in any of the above embodiments, wherein the scanning apparatus has a receiving cavity for the bed board 200 to enter.

[0111] In the aforementioned medical scanning equipment, the drive unit 300 drives the pusher chain 400 to move, causing the pusher chain 400 to move the bed plate 200 to send the object to be scanned into or out of the receiving cavity. During this process, the functional pipeline 500 passes through the pipeline channel 401 inside the pusher chain 400. This allows the functional pipeline 500 to move together with the pusher chain 400 and the bed plate 200. Thus, the pusher chain 400 not only transmits driving force to the bed plate 200, but its internal pipeline channel 401 also guides, constrains, and protects the functional pipeline 500. In other words, the pusher chain 400 simultaneously functions as a drag chain, eliminating the need for an additional drag chain for the functional pipeline 500. Therefore, when the pusher chain 400, which functions as a drag chain, enters the receiving cavity together with the bed plate 200, the drag chain's occupation of the scanning space is eliminated, thereby freeing up more scanning space for the object to be scanned. This is especially effective in medical scanning equipment with deep apertures and long bed plate travel distances, significantly reducing the encroachment on scanning space.

[0112] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0113] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A hospital bed, characterized in that, The hospital beds include: Bed frame (100); A bed board (200) is movably connected to the bed frame (100); A push chain mechanism, comprising a drive unit (300) and a push chain (400), wherein the drive unit (300) is connected to the push chain (400), the output end of the push chain (400) is connected to the bed board (200), and the push chain (400) is provided with a pipeline channel (401); and Functional pipeline (500), the functional pipeline (500) is installed in the pipeline channel (401).

2. The hospital bed according to claim 1, characterized in that, The push chain (400) includes multiple chain links (410) that are rotatably connected in sequence. Each chain link (410) has a sub-channel (410a) inside for the functional pipeline (500) to pass through. The sub-channels (410a) of the multiple chain links (410) are connected in sequence to form the pipeline channel (401).

3. The hospital bed according to claim 2, characterized in that, The link (410) has an opening (410b) on the side away from the pivot (420), and the opening (410b) communicates with the sub-channel (410a) so that the functional pipeline (500) can enter the sub-channel (410a). The link (410) has a limiting part (412) movably connected to one side of the opening (410b); the limiting part (412) has a first position to prevent the functional line (500) from dislodging from the opening (410b), and a second position to allow the functional line (500) to enter and exit the sub-channel (410a) from the opening (410b).

4. The hospital bed according to claim 3, characterized in that, The link (410) has a first sidewall (413a) and a second sidewall (413b) opposite to each other. One end of the limiting part (412) is movably connected to the first sidewall (413a), and the other end is detachably connected to the second sidewall (413b).

5. The hospital bed according to claim 2, characterized in that, A chain shaft (430) is provided on the chain link (410); the output end of the drive device (300) has a sprocket (310), which meshes with the chain shaft (430) of the multiple chain links (410) for transmission.

6. The hospital bed according to claim 5, characterized in that, The pusher mechanism further includes at least one guide unit (600), the guide unit (600) includes at least one guide part (610), the guide part (610) is provided with a guide groove (601).

7. The hospital bed according to claim 6, characterized in that, At least one of the guide units (600) includes a plurality of guide portions (610) that are detachably connected; and / or, The number of guide units (600) is multiple, and the multiple guide units (600) are arranged at intervals.

8. The hospital bed according to claim 6, characterized in that, In the forward direction of the push chain (400), at least one of the guide units (600) is located upstream of the sprocket (310), and / or at least one of the guide units (600) is located downstream of the sprocket (310); The forward direction of the push chain (400) is the direction of movement when the push chain (400) pushes the bed board (200) into the receiving cavity.

9. The hospital bed according to claim 6, characterized in that, The push chain (400) includes a push section (400a), a turning section (400b), and an extension section (400c) connected in sequence. The end of the push section (400a) away from the turning section (400b) is the output end of the push chain (400). The chain shaft (430) at the connection between the push section (400a) and the turning section (400b) meshes with the sprocket (310). The extension direction of the pushing section (400a) intersects the extension direction of the steering section (400b), and the extension direction of the extending section (400c) intersects the extension direction of the steering section (400b).

10. The hospital bed according to claim 9, characterized in that, The guide unit (600) is provided on the movement path of at least one of the pushing section (400a), the turning section (400b), and the extension section (400c).

11. The hospital bed according to claim 2, characterized in that, Any two adjacent links (410) are rotatably connected by a pivot (420); An isolation plate (411) is provided inside the link (410), and the sub-channel (410a) and the rotating shaft (420) are respectively located on both sides of the isolation plate (411) so that the sub-channel (410a) forms a sandwich layer isolated from the rotating shaft (420).

12. The hospital bed according to claim 1, characterized in that, The functional pipeline (500) includes at least one of a power supply cable, a signal transmission line, and a gas pipeline.

13. A medical scanning device, characterized in that, The device includes a scanning apparatus and a hospital bed as described in any one of claims 1-12, the scanning apparatus having a receiving cavity for the bed board (200) to enter.

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