Drag chain limiting and protecting device for movable O-shaped arm X-ray imaging equipment

Abstract

The utility model discloses a drag chain limiting and protecting device for movable O-shaped arm X-ray imaging equipment. The drag chain limiting and protecting device comprises a U-shaped fixed drag chain groove, a U-shaped movable drag chain groove, a driving assembly and a drag chain groove sealing plate assembly. The U-shaped fixed drag chain groove is fixed to the outer ring of the O-shaped arm, the U-shaped movable drag chain groove can slide in the fixed groove under driving of the stepping motor and the gear, and the U-shaped fixed drag chain groove and the U-shaped movable drag chain groove are closed to form an annular drag chain groove. The drag chain groove sealing plate is fixed to the O-shaped arm inner ring and provided with a drag chain guide plate, one end of the drag chain is fixed to the fixing groove, and the other end of the drag chain is connected with the drag chain guide plate. The sliding rail assembly comprises a limiting sliding rail and a movable sliding rail, the sliding gap can be adjusted, and the sliding range is limited. When the equipment is closed, the drag chain groove forms a closed space, and the inner ring rotates to drive the drag chain movable end to move; and when opened, the movable drag chain groove slides into the fixed groove, and the drag chain groove is disconnected. The device ensures efficient operation of the drag chain, improves the scanning efficiency and reduces the radiation dose of a patient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a drag chain limiting and protection device for a mobile O-arm X-ray imaging device. Background Technology

[0002] Mobile O-arm X-ray imaging equipment is widely used in orthopedic surgery and other fields. Its openable O-arm inner and outer ring design combines the high resolution of CT equipment with the flexibility of a traditional C-arm, enabling 360° data acquisition during surgery to provide high-definition three-dimensional images. However, during the rotation of the inner ring of the O-arm, the existing cable chain is directly placed between the inner and outer rings, which not only occupies a lot of space but is also prone to problems such as jamming, breakage, and positional displacement, affecting the rotation speed of the inner ring, reducing image acquisition efficiency, and increasing the patient's radiation dose. Therefore, there is an urgent need for a new cable chain limiting and protection device to address the shortcomings of the existing technology.

[0003] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and for the convenience of those skilled in the art to understand it. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0004] To overcome the shortcomings of the prior art, the present invention aims to disclose a drag chain limiting and protection device for a mobile O-arm X-ray imaging equipment.

[0005] This utility model discloses a cable chain limiting and protection device for a mobile O-arm X-ray imaging equipment, including a cable chain, a U-shaped fixed cable chain groove assembly, a U-shaped movable cable chain groove assembly, a drive assembly, and a cable chain groove sealing plate assembly. The U-shaped movable cable chain groove assembly is slidably connected to the U-shaped fixed cable chain groove assembly. The drive assembly is configured to drive the U-shaped movable cable chain groove assembly to reciprocate within the U-shaped fixed cable chain groove assembly, so that the U-shaped fixed cable chain groove assembly and the U-shaped movable cable chain groove assembly form an O-shaped structure or a C-shaped structure. The cable chain groove sealing plate assembly is configured as a ring structure and is driven to rotate by the O-arm. The cable chain groove sealing plate assembly is coaxially disposed above the O-shaped structure formed by the U-shaped fixed cable chain groove assembly and the U-shaped movable cable chain groove assembly. The cable chain groove sealing plate assembly is provided with a cable chain guide plate. The cable chain is disposed within the U-shaped fixed cable chain groove assembly. The fixed end of the cable chain is fixedly connected to the U-shaped fixed cable chain groove assembly, and the movable end of the cable chain is fixedly connected to the cable chain guide plate.

[0006] Preferred technical solution: The U-shaped fixed cable chain groove assembly is composed of a U-shaped fixed cable chain groove one and a U-shaped fixed cable chain groove two, both of which are arc-shaped structures with a U-shaped cross-section; the closed ends of the U-shaped fixed cable chain groove one and the U-shaped fixed cable chain groove two are fixedly connected to form a C-shaped structure.

[0007] Preferred technical solution: The U-shaped movable cable chain groove assembly is composed of a U-shaped movable cable chain groove one and a U-shaped movable cable chain groove two. Both the U-shaped movable cable chain groove one and the U-shaped movable cable chain groove two are configured as arc-shaped structures with a U-shaped cross-section. The U-shaped movable cable chain groove one is slidably disposed in the U-shaped fixed cable chain groove one and can slide out from the open end of the U-shaped fixed cable chain groove one. The U-shaped movable cable chain groove one and the U-shaped movable cable chain groove two are slidably disposed in the U-shaped fixed cable chain groove two and can slide out from the open end of the U-shaped fixed cable chain groove two. When slid out, the U-shaped movable cable chain groove one and the U-shaped movable cable chain groove two together form an O-shaped structure with the U-shaped fixed cable chain groove one and the U-shaped fixed cable chain groove two.

[0008] Preferred technical solution: The U-shaped movable cable chain groove assembly is slidably mounted in the U-shaped fixed cable chain groove assembly via a slide rail assembly. The slide rail assembly includes a limiting slide rail and a moving slide rail. The outer ring sidewall of the U-shaped fixed cable chain groove assembly has an outwardly protruding annular groove one, and the inner ring sidewall of the U-shaped fixed cable chain groove assembly has an outwardly protruding annular groove two. The limiting slide rail is installed in the annular groove one by an adjusting screw, and the sliding end of the limiting slide rail is fixedly connected to the U-shaped movable cable chain groove assembly. The moving slide rail is installed on the inner ring outer wall of the U-shaped movable cable chain groove assembly by a stud, and the sliding end of the moving slide rail is located in the annular groove two and fixedly connected to the fixed cable chain groove assembly.

[0009] Preferred technical solution: The cable chain groove sealing plate assembly consists of a fixed cable chain groove sealing plate and a movable cable chain groove sealing plate. The fixed cable chain groove sealing plate is vertically corresponding to the U-shaped fixed cable chain groove assembly, and the movable cable chain groove sealing plate is vertically corresponding to the U-shaped movable cable chain groove assembly.

[0010] Preferred technical solution: The O-arm includes an inner O-arm ring, an outer O-arm ring, an inner O-arm ring movable plate, and an outer O-arm ring movable plate. The U-shaped fixed drag chain groove assembly is fixedly connected to the outer O-arm ring via a fixed side lug. The drag chain groove sealing plate assembly is fixedly connected to the inner O-arm ring. The inner O-arm ring movable plate and the outer O-arm ring movable plate are configured to slide circumferentially with the inner O-arm ring and the outer O-arm ring to form an O-shaped structure.

[0011] Preferred technical solution: The drive assembly consists of a stepper motor, an output gear and a rack. The stepper motor is fixed on the support plate of the outer ring of the O-arm and is used to drive the output gear to rotate. The rack is fixed on the peripheral wall of the U-shaped movable drag chain groove assembly. The output gear and the rack are meshed.

[0012] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0013] Enclosed space protection: The U-shaped fixed cable chain groove, the movable cable chain groove and the sealing plate form an enclosed operating space to prevent the cable chain from jamming, breaking or shifting, and extend the service life of the cable chain.

[0014] Precise limit adjustment: The sliding clearance can be precisely controlled by adjusting the limit slide rail. The moving slide rail restricts axial displacement, ensuring radial and axial consistency when the movable cable chain groove is closed, thus improving operational stability.

[0015] Highly efficient synchronous operation: The moving end of the cable chain rotates synchronously with the inner ring. Combined with the enclosed space design, this enables the cable chain to rotate 360° efficiently during scanning, shortening the scanning time.

[0016] Reduced radiation dose: Optimized drag chain operating efficiency and reduced inner ring rotation resistance enable the equipment to quickly complete image acquisition, reducing the duration and dose of X-ray radiation received by patients.

[0017] Flexible opening and closing structure: Dual stepper motors drive the movable cable chain groove to slide symmetrically, enabling rapid opening and closing of the cable chain groove. This is linked with the inner and outer rings of the O-arm, improving the convenience and practicality of equipment operation. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an isometric structural diagram of the drag chain limiting and protection device for the mobile O-arm X-ray imaging equipment involved in this utility model, showing the O-arm in the closed state.

[0020] Figure 2 This is an isometric structural diagram of the drag chain limiting and protection device for the mobile O-arm X-ray imaging equipment involved in this utility model, with the O-arm in the open state.

[0021] Figure 3This is an isometric structural diagram of the U-shaped drag chain device of the mobile O-arm X-ray imaging equipment drag chain limiting and protection device with closed movable drag chain groove, as described in this utility model.

[0022] Figure 4 This is an isometric structural diagram of the U-shaped drag chain device of the mobile O-arm X-ray imaging equipment drag chain limiting and protection device with the movable drag chain groove in the open state. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0027] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "sleeving," and "fitting" should be interpreted broadly. For example, "connection" can be a movable connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example:

[0030] like Figures 1-4 As shown, this utility model discloses a movable O-arm X A cable chain limiting and protection device for X-ray imaging equipment includes a cable chain, a U-shaped fixed cable chain groove assembly 1, a U-shaped movable cable chain groove assembly 2, a drive assembly 3, and a cable chain groove sealing plate assembly. The U-shaped movable cable chain groove assembly 2 is slidably connected to the U-shaped fixed cable chain groove assembly 1. The drive assembly 3 is configured to drive the U-shaped movable cable chain groove assembly 2 to reciprocate within the U-shaped fixed cable chain groove assembly 1, so that the U-shaped fixed cable chain groove assembly 1 and the U-shaped movable cable chain groove assembly 2 form an O-shaped structure or a C-shaped structure. The cable chain groove sealing plate assembly is configured as a ring structure and is driven to rotate by an O-shaped arm. The cable chain groove sealing plate assembly is coaxially disposed above the O-shaped structure formed by the U-shaped fixed cable chain groove assembly 1 and the U-shaped movable cable chain groove assembly 2. A cable chain guide plate 43 is provided on the cable chain sealing plate assembly. The cable chain is disposed within the U-shaped fixed cable chain groove assembly 1. The fixed end of the cable chain is fixedly connected to the U-shaped fixed cable chain groove assembly 1, and the movable end of the cable chain is fixedly connected to the cable chain guide plate 43.

[0031] like Figures 1-4 As shown, the U-shaped fixed cable chain groove assembly 1 is composed of a U-shaped fixed cable chain groove 11 and a U-shaped fixed cable chain groove 12. Both the U-shaped fixed cable chain groove 11 and the U-shaped fixed cable chain groove 12 are arc-shaped structures with a U-shaped cross-section. The closed ends of the U-shaped fixed cable chain groove 11 and the U-shaped fixed cable chain groove 12 are fixedly connected to form a C-shaped structure.

[0032] like Figures 1-4As shown, the U-shaped movable cable chain groove assembly 2 is composed of a U-shaped movable cable chain groove 1 21 and a U-shaped movable cable chain groove 22. Both the U-shaped movable cable chain groove 1 21 and the U-shaped movable cable chain groove 22 are arc-shaped structures with a U-shaped cross-section. The U-shaped movable cable chain groove 1 21 is slidably disposed in the U-shaped fixed cable chain groove 11 and can slide out from the open end of the U-shaped fixed cable chain groove 11. The U-shaped movable cable chain groove 22 is slidably disposed in the U-shaped fixed cable chain groove 2 12 and can slide out from the open end of the U-shaped fixed cable chain groove 2 12. When slid out, the U-shaped movable cable chain groove 1 21 and the U-shaped movable cable chain groove 22 together with the U-shaped fixed cable chain groove 11 and the U-shaped fixed cable chain groove 2 12 form an O-shaped structure.

[0033] like Figures 1-4 As shown, the U-shaped movable cable chain groove assembly 2 is slidably mounted in the U-shaped fixed cable chain groove assembly 1 via a slide rail assembly. The slide rail assembly includes a limiting slide rail and a moving slide rail. The outer ring side wall of the U-shaped fixed cable chain groove assembly 1 is provided with an outwardly protruding annular groove 101, and the inner ring side wall of the U-shaped fixed cable chain groove assembly 1 is provided with an outwardly protruding annular groove 102. The limiting slide rail is installed in the annular groove 101 by adjusting screws, and the sliding end of the limiting slide rail is fixedly connected to the U-shaped movable cable chain groove assembly 2. The moving slide rail is installed on the inner ring outer wall of the U-shaped movable cable chain groove assembly 2 by studs, and the sliding end of the moving slide rail is located in the annular groove 102 and is fixedly connected to the fixed cable chain groove assembly 1.

[0034] The limiting slide rail is used to limit the movement gap between the U-shaped movable cable chain groove assembly 2 and the U-shaped fixed cable chain groove assembly 1. The size of the contact gap between the limiting slide rail and the U-shaped movable groove assembly 2 can be adjusted by adjusting the adjusting screw on the U-shaped fixed cable chain groove assembly 1 to ensure the radial consistency of the U-shaped movable cable chain groove assembly 2 when closed. The movable slide rail is used to limit the axial position of the U-shaped movable cable chain groove assembly 2 when sliding to ensure the axial consistency of the U-shaped movable cable chain groove assembly 2 when closed.

[0035] like Figures 1-4 As shown, the cable chain groove sealing plate assembly consists of a fixed cable chain groove sealing plate 41 and a movable cable chain groove sealing plate 42. The fixed cable chain groove sealing plate 41 is arranged vertically and vertically corresponding to the U-shaped fixed cable chain groove assembly 1, and the movable cable chain groove sealing plate 42 is arranged vertically and vertically corresponding to the U-shaped movable cable chain groove assembly 2.

[0036] like Figures 1-4 As shown, the O-arm includes an inner O-arm ring 51, an outer O-arm ring 52, an inner O-arm ring movable plate 53, and an outer O-arm ring movable plate 54. The U-shaped fixed drag chain groove assembly 1 is fixedly connected to the outer O-arm ring 52 via a fixed side lug. The drag chain groove sealing plate assembly is fixedly connected to the inner O-arm ring 51. The inner O-arm ring movable plate 53 and the outer O-arm ring movable plate 54 are configured to slide circumferentially and form an O-shaped structure with the inner O-arm ring 51 and the outer O-arm ring 52.

[0037] likeFigures 1-4 As shown, the drive assembly 3 consists of a stepper motor, an output gear, and a rack. The stepper motor is fixed on the support plate of the outer ring 52 of the O-arm and is used to drive the output gear to rotate. The rack is fixed on the peripheral wall of the U-shaped movable drag chain groove assembly 2. The output gear and the rack are meshed.

[0038] When the O-arm is in the closed state, the inner ring movable plate 53 and the inner ring 51 of the O-arm form a complete inner ring, and the U-shaped movable cable chain groove assembly 2 is in the state of sliding out of the U-shaped fixed cable chain groove assembly 1. At this time, the U-shaped fixed cable chain groove assembly 1, the U-shaped movable cable chain groove assembly 2, and the cable chain groove sealing plate assembly 4 together form a complete circular closed space, which is the image scanning preparation state. When the scanning starts, the inner ring 51 of the O-arm will rotate one revolution in the same direction from the scanning start point. During this process, the inner ring 51 of the O-arm drives the fixed cable chain groove sealing plate 41, the movable cable chain groove sealing plate 42, and the cable chain guide plate 43 to rotate together. Under the action of the cable chain guide plate 43, the movable end of the cable chain rotates one revolution in the cable chain groove. When the scanning ends, the O-arm... Inwardly, 51 rotates in the opposite direction for one revolution, and the fixed cable chain groove sealing plate 41, the movable cable chain groove sealing plate 42, and the cable chain guide plate 43, along with the movable end of the cable chain, also rotate in the opposite direction for one revolution, and the equipment returns to the image scanning preparation state. When the O-arm needs to be opened, the inner ring movable plate 53 and the outer ring movable plate 54 of the O-arm will open and move circumferentially under the action of the corresponding mechanism. During this process, the movable cable chain groove sealing plate 42 moves together with the inner ring movable plate 53 of the O-arm. When the O-arm is fully opened, the two stepper motors configured in the U-shaped movable cable chain groove assembly 2 start to run synchronously, and the U-shaped movable cable chain groove assembly 2 slides into the U-shaped fixed cable chain groove assembly 1. The angular displacement of the sliding of the U-shaped movable cable chain groove assembly 2 is controlled by controlling the stepper motor. When the stepper motor stops running, the O-arm is in the open state. When the O-arm needs to be closed, the two stepper motors configured in the U-shaped movable cable chain groove assembly 2 first start to run synchronously. The U-shaped movable cable chain groove assembly 2 slides outward to the U-shaped fixed cable chain groove assembly 1. By controlling the stepper motors, the U-shaped movable cable chain groove assembly 2 is merged together. Then, the inner ring movable plate 53 and the outer ring movable plate 54 of the O-arm will move and close under the action of the corresponding mechanisms. The O-arm re-forms a complete ring, and the equipment returns to the image scanning preparation state.

[0039] The method of use and principle of this utility model are as follows:

[0040] This utility model discloses a cable chain limiting and protection device for a mobile O-arm X-ray imaging equipment, in which all components work together. The U-shaped movable cable chain groove is securely connected to the outer ring of the O-arm via movable side ears. Driven by a stepper motor, the U-shaped movable cable chain groove slides within itself through the meshing of transmission gears and its own transmission teeth. Moving and limiting slide rails precisely control the sliding trajectory and clearance of the U-shaped movable cable chain groove, ensuring stable operation. The cable chain groove sealing plate moves with the inner ring of the O-arm, and the cable chain guide plate guides the movement of the movable end of the cable chain.

[0041] When the O-arm is closed, the U-shaped movable cable chain slid out, forming a closed space, and the equipment enters the image scanning preparation state. After scanning starts, the inner ring of the O-arm drives the cable chain sill plate and cable chain guide plate to rotate, and the movable end of the cable chain rotates accordingly to complete the scan. After scanning, the inner ring rotates in the opposite direction, and the equipment returns to the preparation state. When the O-arm needs to be opened or closed, the movable cable chain slid in a specific sequence under the control of a stepper motor to open and close the cable chain, ensuring normal operation of the equipment.

[0042] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable chain limiting and protection device for a mobile O-arm X-ray imaging equipment, characterized in that: The device includes a cable chain, a U-shaped fixed cable chain groove assembly, a U-shaped movable cable chain groove assembly, a drive assembly, and a cable chain groove sealing plate assembly. The U-shaped movable cable chain groove assembly is slidably connected to the U-shaped fixed cable chain groove assembly. The drive assembly is configured to drive the U-shaped movable cable chain groove assembly to reciprocate within the U-shaped fixed cable chain groove assembly, so that the U-shaped fixed cable chain groove assembly and the U-shaped movable cable chain groove assembly form an O-shaped structure or a C-shaped structure. The cable chain groove sealing plate assembly is configured as a ring structure and is driven to rotate by an O-shaped arm. The cable chain groove sealing plate assembly is coaxially disposed above the O-shaped structure formed by the U-shaped fixed cable chain groove assembly and the U-shaped movable cable chain groove assembly. The cable chain groove sealing plate assembly is provided with a cable chain guide plate. The cable chain is disposed within the U-shaped fixed cable chain groove assembly. The fixed end of the cable chain is fixedly connected to the U-shaped fixed cable chain groove assembly, and the movable end of the cable chain is fixedly connected to the cable chain guide plate.

2. The drag chain limiting and protection device for a mobile O-arm X-ray imaging equipment according to claim 1, characterized in that: The U-shaped fixed cable chain groove assembly consists of a U-shaped fixed cable chain groove one and a U-shaped fixed cable chain groove two. Both the U-shaped fixed cable chain groove one and the U-shaped fixed cable chain groove two are arc-shaped structures with a U-shaped cross-section. The closed ends of the U-shaped fixed cable chain groove one and the U-shaped fixed cable chain groove two are fixedly connected to form a C-shaped structure.

3. The drag chain limiting and protection device for a mobile O-arm X-ray imaging equipment according to claim 2, characterized in that: The U-shaped movable cable chain groove assembly consists of a first U-shaped movable cable chain groove and a second U-shaped movable cable chain groove. Both the first and second U-shaped movable cable chain grooves are arc-shaped structures with a U-shaped cross-section. The first U-shaped movable cable chain groove slides in the first U-shaped fixed cable chain groove and can slide out from the open end of the first U-shaped fixed cable chain groove. The second U-shaped movable cable chain groove slides in the second U-shaped fixed cable chain groove and can slide out from the open end of the second U-shaped fixed cable chain groove. When slid out, the first and second U-shaped movable cable chain grooves together with the first and second U-shaped fixed cable chain grooves form an O-shaped structure.

4. The drag chain limiting and protection device for a mobile O-arm X-ray imaging equipment according to claim 1, characterized in that: The U-shaped movable cable chain groove assembly is slidably mounted in the U-shaped fixed cable chain groove assembly via a slide rail assembly. The slide rail assembly includes a limiting slide rail and a moving slide rail. The outer ring sidewall of the U-shaped fixed cable chain groove assembly has an outwardly protruding annular groove one, and the inner ring sidewall of the U-shaped fixed cable chain groove assembly has an outwardly protruding annular groove two. The limiting slide rail is installed in the annular groove one by an adjusting screw, and the sliding end of the limiting slide rail is fixedly connected to the U-shaped movable cable chain groove assembly. The moving slide rail is installed on the inner ring outer wall of the U-shaped movable cable chain groove assembly by a stud, and the sliding end of the moving slide rail is located in the annular groove two and is fixedly connected to the fixed cable chain groove assembly.

5. The drag chain limiting and protection device for a mobile O-arm X-ray imaging equipment according to claim 1, characterized in that: The cable chain groove sealing plate assembly consists of a fixed cable chain groove sealing plate and a movable cable chain groove sealing plate. The fixed cable chain groove sealing plate is vertically corresponding to the U-shaped fixed cable chain groove assembly, and the movable cable chain groove sealing plate is vertically corresponding to the U-shaped movable cable chain groove assembly.

6. The drag chain limiting and protection device for a mobile O-arm X-ray imaging equipment according to claim 1, characterized in that: The O-arm includes an inner O-arm ring, an outer O-arm ring, an inner O-arm ring movable plate, and an outer O-arm ring movable plate. The U-shaped fixed drag chain groove assembly is fixedly connected to the outer O-arm ring via a fixed side lug. The drag chain groove sealing plate assembly is fixedly connected to the inner O-arm ring. The inner O-arm ring movable plate and the outer O-arm ring movable plate are configured to slide circumferentially to form an O-shaped structure with the inner O-arm ring and the outer O-arm ring.

7. The drag chain limiting and protection device for a mobile O-arm X-ray imaging equipment according to claim 6, characterized in that: The drive assembly consists of a stepper motor, an output gear, and a rack. The stepper motor is fixed on the support plate of the outer ring of the O-arm and is used to drive the output gear to rotate. The rack is fixed on the peripheral wall of the U-shaped movable drag chain groove assembly. The output gear and the rack are meshed together.

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