Novel moving arm structure for X-ray imaging equipment

Abstract

The utility model discloses a novel moving arm structure for X-ray imaging equipment, and aims to solve the problems that in the prior art, a slip ring is high in cost, a drag chain is easy to block, and the equipment complexity is high. The structure comprises a composite rotating frame and a dynamic drag chain protection system, the combined type rotating frame is composed of a movable arm outer ring body and a movable arm inner ring body which are coaxially arranged, the outer ring body and the inner ring body form a closed O-shaped structure through a C-shaped fixed plate and a detachable movable plate, and multi-degree-of-freedom movement is achieved. According to the dynamic drag chain protection system, an O-shaped drag chain limiting protection groove is formed by a U-shaped fixed drag chain groove and a telescopic U-shaped movable drag chain groove, a gear and rack transmission mechanism and a sealed guide channel are matched, and it is ensured that the drag chain moves stably and is not extruded. According to the utility model, the drag chain is adopted to replace a slip ring, so that the cost is remarkably reduced, the reliability is improved by optimizing a protection system, and 360-degree image acquisition can be completed only by a single set of ray equipment; in addition, the design of the movable plate facilitates opening, closing and maintenance of equipment.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a novel movable arm structure for X-ray imaging equipment. Background Technology

[0002] Currently, O-arm structures are widely used in radiotherapy and medical imaging equipment, and their multi-degree-of-freedom motion capabilities can meet the needs of precise positioning and imaging.

[0003] Chinese patent CN104307114B, titled "Five-DOF O-arm Radiotherapy System," discloses an O-arm system with rotation, flipping, and translation functions, but its energy transmission relies on slip ring assemblies. Slip rings (especially fiber optic rings) require high precision machining, are expensive, account for 20% to 30% of the total equipment cost, and are complex to maintain.

[0004] Chinese patent application CN 111166369 A, entitled "An Openable Dual-Source CT Equipment O-Arm Structure," discloses an openable O-arm that transforms into a C-arm. Two sets of X-ray generating and receiving devices are also mounted on the O-arm. This design reduces the rotation angle of the O-arm's rotating components, allowing each of the two sets of X-ray generating and receiving devices to capture a 180° range, thus completing 360° image acquisition. However, the patent does not mention the energy transmission method of the rotating components within the O-arm. Given that this opening and closing structure cannot use slip rings, a cable chain is the most likely option. Because this structure has two sets of X-ray generating and receiving devices and a relatively small rotation angle, the length of a single cable chain will be shorter, but the number of cable chains will increase. Although the cable chains are short and their posture changes little during operation, without enhanced protection, there is a high probability of jamming, deviation, or compression. Furthermore, the use of two sets of X-ray generating and receiving devices significantly increases the overall cost of the device.

[0005] Therefore, in view of the shortcomings of existing technologies, it is necessary to design a new type of moving arm structure for X-ray imaging equipment to solve the above problems.

[0006] 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 facilitating the understanding of those skilled in the art. 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

[0007] To overcome the shortcomings of the prior art, the present invention discloses a novel movable arm structure for X-ray imaging equipment, which can realize multi-degree-of-freedom motion, reduce the complexity of energy transmission, and take into account the economy and long-term reliability of the equipment.

[0008] This utility model discloses a novel movable arm structure for an X-ray imaging device, which is vertically and vertically mounted on the base of the X-ray imaging device and includes:

[0009] Composite rotating frame: Composed of an outer ring body and an inner ring body of a moving arm arranged coaxially. The outer ring body includes two parallel C-shaped outer ring fixed plates connected by an outer ring support plate and a detachable outer ring movable plate. The C-shaped outer ring fixed plates and the outer ring movable plate can form a closed O-shaped outer plate. The inner ring body includes two parallel C-shaped inner ring fixed plates connected by an inner ring support plate and a detachable inner ring movable plate. The C-shaped inner ring fixed plates and the inner ring movable plate can form a closed O-shaped inner plate. The O-shaped outer plate and the O-shaped inner plate are slidably connected circumferentially.

[0010] Dynamic cable chain protection system: Includes a U-shaped fixed cable chain groove fixed to the outer ring support plate, with a U-shaped movable cable chain groove at its open end that can extend and retract along the groove body. The two ends of the U-shaped movable cable chain groove connect with the U-shaped fixed cable chain groove to form an O-shaped cable chain limiting protection groove. The U-shaped movable cable chain groove forms a gear and rack transmission mechanism with the output gear of the drive motor via a rack and pinion structure. The drive motor is fixed on the U-shaped fixed cable chain groove. The U-shaped fixed cable chain groove and a C-shaped sealing plate fixed to the inner ring fixed plate together form a sealed guide channel for the cable chain to pass through, preventing the cable chain from deviating or being squeezed. A sealing movable plate that moves synchronously with the inner ring movable plate is movably connected to the C-shaped sealing plate, ensuring that the cable chain is always protected during opening and closing.

[0011] Preferred technical solution: The inner wall of the U-shaped fixed cable chain groove is provided with a sliding groove along its circumference, and the outer wall of the U-shaped movable cable chain groove is provided with a sliding rail that matches the sliding groove, thereby enhancing the stability of movement.

[0012] Preferred technical solution: The C-type sealing plate is also provided with a guide plate for guiding the cable chain, further optimizing the cable chain guidance.

[0013] Preferred technical solution: The drive motor is a stepper motor to ensure motion accuracy.

[0014] Preferred technical solution: The outer ring movable plate, the inner ring movable plate, and the sealing movable plate achieve synchronous opening and closing through a linkage locking mechanism.

[0015] Preferred technical solution: The new mobile arm structure can perform 360° arbitrary angle positioning.

[0016] Preferred technical solution: Both the outer ring body and the inner ring body are equipped with quick-locking devices at their C-shaped opening ends, which facilitates synchronous opening and closing.

[0017] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0018] 1) Traditional O-arms rely on high-precision slip rings (such as fiber optic rings) to transmit energy and signals, and their cost accounts for 20% to 30% of the total equipment cost. This utility model uses a cable chain system to replace slip rings, which significantly reduces manufacturing costs.

[0019] 2) By optimizing the drag chain protection system, the inner ring can rotate 360°, and only a single set of X-ray generating and receiving equipment is needed to complete all-round image acquisition, avoiding the high cost of two sets of equipment.

[0020] 3) It forms an openable and closable sealed guide channel to ensure that the cable chain is always under control during the movement, and completely solves the problems of jamming, deviation and compression of traditional cable chains.

[0021] 4) Through the cooperation of the drive motor and the rack and pinion structure, the cable chain telescopic movement is smoother, reducing mechanical wear and extending service life.

[0022] 5) Add guide plates and slide rail structures to further restrict the movement trajectory of the cable chain and prevent twisting or derailment.

[0023] 6) The outer and inner movable plates can be opened simultaneously, instantly converting the O-arm into a C-arm, while the dynamic drag chain protection system can also be opened simultaneously; facilitating patient entry and exit or equipment maintenance.

[0024] 7) The C-shaped fixed plate and the movable plate are detachably connected, which facilitates quick replacement or repair of parts. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a schematic diagram of the novel movable arm structure for X-ray imaging equipment of this utility model when it is in a horizontally closed state;

[0027] Figure 2 This is a schematic diagram of the novel movable arm structure for X-ray imaging equipment of this utility model when it is in a horizontally open state.

[0028] Figure 3 This is a schematic diagram of the novel movable arm structure for X-ray imaging equipment of this utility model when it is in a vertically closed state.

[0029] Figure 4This is a schematic diagram of the novel movable arm structure for X-ray imaging equipment of this utility model when it is in the vertically open state.

[0030] Figure 5 This is a schematic diagram of the composite rotating frame in the closed state of this utility model;

[0031] Figure 6 This is a schematic diagram of the composite rotating frame in the open state of this utility model;

[0032] Figure 7 This is a schematic diagram of the dynamic cable chain protection system in the closed state of this utility model;

[0033] Figure 8 This is a schematic diagram of the dynamic cable chain protection system in the open state of this utility model.

[0034] In the attached diagrams above, 100 is the base of the X-ray imaging equipment; 1 is the outer ring body of the moving arm; 11 is the C-shaped outer ring fixing plate; 12 is the outer ring support plate; 13 is the outer ring movable plate; 2 is the inner ring body of the moving arm; 21 is the C-shaped inner ring fixing plate; 22 is the inner ring support plate; 23 is the inner ring movable plate; 3 is the dynamic cable chain protection system; 31 is the U-shaped fixed cable chain groove; 31a is the slide groove; 32 is the C-shaped sealing plate; 33 is the U-shaped movable cable chain groove; 33a is the rack and pinion structure; 33b is the slide rail; 34 is the drive motor; 35 is the output gear; 36 is the sealing movable plate; and 37 is the guide plate. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed 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 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 based on the specific circumstances.

[0040] 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.

[0041] Example:

[0042] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a novel movable arm structure for an X-ray imaging device. It is vertically and vertically mounted on the X-ray imaging device base 100 and includes a composite rotating frame and a dynamic cable chain protection system 3. The main components of this utility model will be described in detail below:

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the composite rotating frame consists of an outer ring body 1 and an inner ring body 2 of the moving arm, which are coaxially arranged.

[0044] The outer ring body 1 includes a C-shaped outer ring fixing plate 11, an outer ring support plate 12, and an outer ring movable plate 13; the two C-shaped outer ring fixing plates 11 are arranged in parallel and their C-shaped openings correspond to each other, and the two ends of the outer ring support plate 12 are fixedly connected to the two C-shaped outer ring fixing plates 11; the outer ring movable plate 13 and the C-shaped opening of the C-shaped outer ring fixing plate 11 can be connected to form a closed O-shaped outer plate; the outer ring movable plate 13 and the C-shaped opening of the C-shaped outer ring fixing plate 11 are misaligned, so that the whole structure is C-shaped, which is convenient for equipment maintenance or quick opening when patients enter or exit.

[0045] The inner ring body 2 includes a C-shaped inner ring fixing plate 21, an inner ring support plate 22, and an inner ring movable plate 23; the two C-shaped inner ring fixing plates 21 are arranged in parallel and their C-shaped openings correspond to each other, and the two ends of the inner ring support plate 22 are fixedly connected to the two C-shaped inner ring fixing plates 21; the inner ring movable plate 23 and the C-shaped opening of the C-shaped inner ring fixing plate 21 can be connected to form a closed O-shaped inner plate, and the O-shaped inner plate and the O-shaped outer plate of the outer ring body 1 can be rotated relative to each other 360° through circumferential sliding connection; the inner ring movable plate 23 and the C-shaped opening of the C-shaped inner ring fixing plate 21 are misaligned, so that the whole structure is C-shaped, which is convenient for equipment maintenance or quick opening when patients enter or exit.

[0046] The aforementioned design, with its openable C-shaped structure, allows the O-arm to be quickly converted into a C-arm, facilitating patient positioning or emergency procedures. The sliding connection between the inner and outer rings supports 360° continuous rotation, requiring only a single set of X-ray generating and receiving equipment to meet multi-angle imaging needs.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the dynamic cable chain protection system 3 includes a U-shaped fixed cable chain groove 31, a C-shaped sealing plate 32, and a U-shaped movable cable chain groove 33, wherein:

[0048] The U-shaped fixed drag chain groove 31 is fixed on the outer ring support plate 12, and its inner wall is provided with a sliding groove 31a along the circumferential direction;

[0049] There are two U-shaped movable cable chain grooves 33, which are respectively matched with the slide grooves 31a via slide rails 33b and are set at the two open ends of the U-shaped fixed cable chain groove 31 to achieve telescopic movement. The drive motor 34 is fixed on the U-shaped fixed cable chain groove 31. The movable cable chain grooves 33 mesh with the output gear 35 of the drive motor 34 through the rack and pinion structure 33a to form a rack and pinion transmission mechanism. The drive motor 34 drives the movable cable chain grooves 33 to move. When the two movable cable chain grooves 33 extend from the two open ends of the U-shaped fixed cable chain groove 31 and connect, the U-shaped fixed cable chain groove 31 and the two movable cable chain grooves 33 close together to form an O-shaped structure; when the two movable cable chain grooves 33 retract from the two open ends of the U-shaped fixed cable chain groove 31, the U-shaped fixed cable chain groove 31 and the two movable cable chain grooves 33 still form a C-shaped structure. The U-shaped fixed cable chain groove 31 and the C-shaped sealing plate 32 fixed on the inner ring fixed plate 21 together form a sealed guide channel for the cable chain to pass through. The cable chain passes through this channel to avoid deviation or compression. The sealing movable plate 36 moves synchronously with the inner ring movable plate 23 to ensure that the cable chain is always protected during the opening and closing process.

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when the composite rotating frame is in the closed state, the dynamic drag chain protection system 3 is also in the closed state. At this time, the drag chain moves synchronously in the circumferential direction with the inner ring body 2 in the sealed guide channel.

[0051] When the composite rotating frame is in the open state, the dynamic cable chain protection system 3 is also in the open state, at which time the cable chain stops at the preset position and remains stationary.

[0052] The above design achieves smooth extension and retraction of the cable chain through gear and rack transmission, enabling synchronous opening and closing of the dynamic cable chain protection system and the composite rotating frame. The sealed design completely solves the problems of jamming and derailment common in traditional cable chains.

[0053] like Figure 7 and Figure 8 As shown, the C-type sealing plate 32 is also provided with a guide plate 37 for guiding the cable chain, further restricting the movement trajectory of the cable chain.

[0054] like Figure 7 and Figure 8 As shown, the drive motor 34 is a stepper motor, which is highly precise and easy to control.

[0055] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the outer ring movable plate 13, the inner ring movable plate 23, and the sealing movable plate 36 achieve synchronous opening and closing through a linkage locking mechanism.

[0056] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the new mobile arm structure can be positioned at any angle of 360°, and with the help of the control system, it can be precisely positioned at any angle.

[0057] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, both the outer ring body 1 and the inner ring body 2 are equipped with quick-locking devices at their C-shaped opening ends, which improves the opening and closing efficiency of the composite rotating frame.

[0058] This invention provides a novel moving arm structure for X-ray imaging equipment, offering a more flexible and economical motion solution through an innovative composite rotating frame and dynamic drag chain protection system.

[0059] 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 novel movable arm structure for an X-ray imaging device, which is vertically and vertically mounted on an X-ray imaging device base (100) and is characterized in that, include: Composite rotating frame: It consists of a movable arm outer ring body (1) and a movable arm inner ring body (2) arranged coaxially. The outer ring body (1) includes two parallel C-shaped outer ring fixing plates (11) connected by an outer ring support plate (12) and a detachable outer ring movable plate (13). The C-shaped outer ring fixing plate (11) and the outer ring movable plate (13) can form a closed O-shaped outer plate. The inner ring body (2) includes two parallel C-shaped inner ring fixing plates (21) connected by an inner ring support plate (22) and a detachable inner ring movable plate (23). The C-shaped inner ring fixing plate (21) and the inner ring movable plate (23) can form a closed O-shaped inner plate. The O-shaped outer plate and the O-shaped inner plate are slidably connected in the circumferential direction. Dynamic cable chain protection system (3): includes a U-shaped fixed cable chain groove (31) fixed on the outer ring support plate (12), and a U-shaped movable cable chain groove (33) that can extend and retract along the groove at its open end. The U-shaped movable cable chain groove (33) at both ends is connected to the U-shaped fixed cable chain groove (31) to form an O-shaped cable chain limiting protection groove. The U-shaped movable cable chain groove (33) is connected to the output gear (35) of the drive motor (34) through a rack and pinion structure (33a) to form a rack and pinion transmission mechanism. The drive motor (34) is fixed on the U-shaped fixed cable chain groove (31). The U-shaped fixed cable chain groove (31) and the C-shaped sealing plate (32) fixed on the inner ring fixed plate (21) together form a sealed guide channel for the cable chain to pass through. A sealing movable plate (36) that can move synchronously with the inner ring movable plate (23) is movably connected to the C-shaped sealing plate (32).

2. The novel moving arm structure for X-ray imaging equipment according to claim 1, characterized in that: The inner wall of the U-shaped fixed cable chain groove (31) is provided with a groove (31a) along its circumference, and the outer wall of the U-shaped movable cable chain groove (33) is provided with a slide rail (33b) that matches the groove (31a).

3. The novel moving arm structure for X-ray imaging equipment according to claim 1, characterized in that: The C-type sealing plate (32) is also provided with a guide plate (37) for guiding the cable chain.

4. The novel moving arm structure for X-ray imaging equipment according to claim 1, characterized in that: The drive motor (34) is a stepper motor.

5. The novel moving arm structure for X-ray imaging equipment according to claim 1, characterized in that: The outer ring movable plate (13), the inner ring movable plate (23), and the sealing movable plate (36) are opened and closed synchronously through a linkage locking mechanism.

6. The novel moving arm structure for X-ray imaging equipment according to claim 1, characterized in that: The novel mobile arm structure can be positioned at any angle of 360°.

7. The novel movable arm structure for X-ray imaging equipment according to claim 1, characterized in that: Both the outer ring body (1) and the inner ring body (2) are equipped with quick-locking devices at their C-shaped opening ends.

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