C-arm structure and medical equipment

Abstract

The utility model provides a C-arm structure and medical equipment. The C-arm structure comprises a C-arm body, the two opposite sides of the C-arm body are used for being connected with an X-ray bulb tube and an image receiver respectively, and the C-arm structure further comprises a buffer assembly and a sensor; the buffer assembly comprises a fixed part, an elastic part and a moving module; the fixing piece is connected to the end of the C-arm body, and the sensor is arranged on the fixing piece. One end of the elastic piece is connected to the fixing piece; the other end of the elastic piece is connected to the moving module, the moving module can move in the elastic force direction of the elastic piece under the action of external force and comprises a detected piece, and the sensor is used for detecting the position of the detected piece. The C-arm structure is high in structural stability, and collision accidents are fed back timely and accurately.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a C-arm structure and a medical device using the C-arm structure. Background Technology

[0002] Digital subtraction angiography (DSA) equipment is a core medical device for the diagnosis and treatment of vascular diseases. The C-arm structure is crucial; its two sides are connected to the X-ray tube and image receiver, respectively, and it can rotate 360 ​​degrees around the patient's examination site to acquire vascular images from different angles. However, during C-arm movement, the tip is highly susceptible to collision with the catheter bed. Such collisions can cause structural deformation of the C-arm, damage to electronic components, and may even trigger a chain reaction of system failures, thus affecting the overall diagnostic and treatment performance of the equipment.

[0003] In related technologies, two main technical methods are used to prevent collisions between the C-arm tip and the guide bed. One method uses software to calculate the relative positional relationship, calculating the relative distance between the C-arm tip and the guide bed by setting specific points, thereby assessing the collision risk. The other method uses a capacitive anti-collision structure, utilizing the principle of capacitive sensing to warn of collisions based on changes in capacitance caused by changes in the distance between the C-arm and the guide bed.

[0004] However, in the first type of collision avoidance method mentioned above, the calculation based on the set point has a monitoring blind zone, which cannot detect the collision danger in the blind zone in time; in the second type of collision avoidance method mentioned above, the capacitive collision avoidance structure is severely affected by external environmental factors, making it difficult to provide effective early warning when a collision actually occurs. Utility Model Content

[0005] This application provides a C-arm structure and medical device that can accurately and promptly determine whether a collision has occurred at the end of the C-arm. Furthermore, the inclusion of an elastic buffer component can prevent damage to the end structure of the C-arm to a certain extent, thereby improving the overall diagnostic and treatment accuracy of the medical device.

[0006] On one hand, this application provides a C-arm structure, including a C-arm body, with opposite sides of the C-arm body used to connect an X-ray tube and an image receiver, respectively. The C-arm structure provided in this application also includes a buffer assembly and a sensor; the buffer assembly includes a fixing member, an elastic member, and a moving module; the fixing member is connected to the end of the C-arm body, and the sensor is disposed on the fixing member; one end of the elastic member is connected to the fixing member; the other end of the elastic member is connected to the moving module, and the moving module can move along the elastic force direction of the elastic member under the action of external force. The moving module includes a detection object, and the sensor is used to detect the position of the detection object.

[0007] As an optional implementation, the moving module also includes a moving member and a guide post; the other end of the elastic member is connected to the moving member; one end of the guide post is connected to the detected member, and the other end passes through the fixing member and is connected to the moving member, and the guide post and the fixing member are slidably engaged.

[0008] As an optional implementation, the elastic element is a spring, which is sleeved on the guide post.

[0009] As an optional implementation, there are multiple guide posts and multiple springs, and the multiple guide posts are arranged in a one-to-one correspondence with the multiple springs.

[0010] As an optional implementation, the C-arm structure provided in this application further includes a protective cover and a buffer ring. The protective cover is connected to the moving part and covers the buffer assembly. The buffer ring is disposed between the protective cover and the C-arm body. The outer surface of the protective cover forms part of the outer surface of the C-arm structure. The protective cover, the buffer ring and the C-arm body together enclose a cavity for accommodating the buffer assembly.

[0011] As an optional implementation, the protective cover and the moving part are detachably connected, and the buffer ring is an elastic ring.

[0012] As an optional implementation, the fixing member has a first fixing hole; the sensor is disposed in the first fixing hole, the detection part of the sensor extends out of the first fixing hole and is located on the side of the fixing member opposite to the moving member.

[0013] As an optional implementation, the fixing member is a fixing plate, and the fixing plate has two first fixing holes, which are symmetrically arranged about the central axis of the fixing plate; a sensor is installed in one of the first fixing holes, and one sensor corresponds to one detected object.

[0014] As an optional implementation, the fastener is detachably connected to the C-arm body.

[0015] As an optional implementation, both the fixing component and the moving component are provided with weight reduction holes.

[0016] On the other hand, this application also provides a medical device, including an X-ray tube, an image receiver, and the aforementioned C-arm structure; the X-ray tube and the image receiver are respectively disposed on opposite sides of the C-arm body.

[0017] In the C-arm structure and medical device provided in this application, when a collision occurs at the end of the C-arm, the moving module will move along the elastic force direction of the elastic element. The sensor monitors the entire process without any omissions. Compared with the software calculation method used in related technologies to avoid collisions, there is no area that cannot be monitored, that is, there is no blind spot, which further avoids collisions between the end of the C-arm and the catheter bed to a certain extent.

[0018] In addition, the C-arm structure provided in this application is based on mechanical principles and is not affected by environmental factors. It can stably and accurately detect the relative positional changes between the C-arm end and the catheter bed, etc., thereby improving the overall stability of the medical device.

[0019] More importantly, in this application, when a collision occurs at the end of the C-arm body, i.e. when the moving module moves, the elastic element can deform under force at the moment of collision, absorb and disperse the impact force, reduce the damage caused by the collision between the end of the C-arm and the catheter bed, reduce the risk of equipment damage, and further improve the overall stability of the medical device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the C-arm structure provided in the embodiments of this application;

[0022] Figure 2 An exploded view of the C-arm structure provided in the embodiments of this application;

[0023] Figure 3 for Figure 2 Enlarged schematic diagram of the local structure at point A;

[0024] Figure 4 A diagram showing the usage state of the C-arm structure provided in the embodiments of this application;

[0025] Figure 5 This is a three-dimensional structural diagram of a partial structure of the C-arm structure provided in an embodiment of this application;

[0026] Figure 6 for Figure 5 A schematic diagram of a partial structure;

[0027] Figure 7 A three-dimensional structural diagram of the fixing member in the C-arm structure provided in the embodiments of this application;

[0028] Figure 8 A three-dimensional structural diagram of the tested component in the C-arm structure provided in the embodiments of this application;

[0029] Figure 9 This is a three-dimensional structural diagram of the movable component in the C-arm structure provided in the embodiments of this application.

[0030] Explanation of icon numbers:

[0031] 1. C-arm main body; 2. Buffer assembly; 3. Sensor; 4. Protective cover; 5. Cavity; 6. Buffer ring;

[0032] 10. C-arm structure; 11. Second connecting hole; 21. Fixing element; 22. Elastic element; 23. Moving module; 31. Detection unit; 20. Guide bed;

[0033] 211. First connecting hole; 212. First weight reduction hole; 213. Weight reduction notch; 214. First fixing hole; 215. Second through hole; 231. Component to be tested; 232. Moving component; 233. Guide post;

[0034] 2311. Connecting plate; 2312. First through hole; 2313. Reinforcing plate; 2321. Moving body; 2322. Reinforcing connecting plate; 2323. Third connecting hole; 2324. Main body plate; 2325. Second weight reduction hole; 2326. Second fixing hole; 2327. Flanged edge; 2331. Stop end.

[0035] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0037] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0038] Digital subtraction angiography (DSA) equipment is a core medical device for the diagnosis and treatment of vascular diseases and is indispensable in clinical applications. The C-arm structure is crucial; one end of the C-arm supports the X-ray tube, while the other end houses the image receiver. It can rotate 360 ​​degrees around the patient's examination site to acquire vascular images from different angles, aiding doctors in accurate diagnosis and treatment. However, during the movement of the C-arm, due to mechanical failure, human error, or equipment aging, the tip is highly susceptible to collision with the catheter bed. Once a collision occurs, the C-arm may suffer structural deformation, damage to electronic components, dents in the catheter bed surface, and malfunction. It may also trigger a chain reaction of equipment system failures, severely impacting the normal operation of the device.

[0039] In related technologies, two main technical methods are used to prevent collisions between the C-arm tip and the catheter bed. One method involves software calculation of the relative positional relationship, which calculates the relative distance between the C-arm tip and the catheter bed by setting specific points to assess the collision risk. The other method uses a capacitive anti-collision structure, which utilizes the principle of capacitive sensing to warn of collisions based on changes in capacitance caused by changes in the distance between the C-arm and the catheter bed.

[0040] However, the two related technologies mentioned above have the following drawbacks: software-based calculations involve large computational loads, placing extremely high demands on both hardware and software, often leading to slow system operation or even lag; furthermore, calculations based on set points have monitoring blind spots, making it impossible to detect collision hazards within these blind spots in a timely manner. Capacitive anti-collision structures, on the other hand, are severely affected by external environmental factors such as temperature, humidity, and electromagnetic fields, frequently resulting in false alarms or no alarms. This not only interferes with the normal use of the equipment but also fails to provide effective warnings when a collision actually occurs.

[0041] Based on this, this application provides a C-arm structure and medical device that not only eliminates monitoring blind spots but is also unaffected by environmental interference. It should be noted that the medical device provided in this embodiment includes, but is not limited to, a DSA device.

[0042] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific implementation details.

[0043] Please see Figures 1 to 3 , Figure 1 This is a three-dimensional structural diagram of the C-arm structure provided in the embodiments of this application. Figure 2 This is an exploded view of the C-arm structure provided in the embodiments of this application. Figure 3 for Figure 2 A magnified schematic diagram of a partial structure at point A. As shown in the figure, this embodiment provides a C-arm structure 10, including a C-arm body 1, with opposite sides of the C-arm body 1 used to fix an X-ray tube (not shown in the figure) and an image receiver (not shown in the figure).

[0044] Furthermore, at the end of the C-arm body 1, a buffer assembly 2 is connected, which includes a fixing member 21, an elastic member 22, and a moving module 23.

[0045] The fixing member 21 is connected to the end of the C-arm body 1, and a sensor 3 is mounted on the fixing member 21. One end of the elastic member 22 is connected to the fixing member 21, and the other end is connected to the moving module 23. The moving module 23 includes a detected component 231, and the sensor 3 is used to detect the position of the detected component 231. Please continue to combine Figure 4 , Figure 4 This is a usage diagram of the C-arm structure provided in this embodiment. When the C-arm structure 10 provided in this embodiment is in motion, if the end of the C-arm structure 10 collides with the guide bed 20, the guide bed 20 will exert an external force on the moving module 23, causing the moving module 23 to move along the elastic force direction of the elastic member 22.

[0046] It should be noted that the aforementioned sensor 3 needs to be electrically connected to the controller inside the medical device to transmit the acquired position signal of the detected component 231 to the controller, so that the controller can control the C-arm structure 10 to adjust its direction of movement at any time. No specific restrictions are placed on the control logic here.

[0047] It is understood that there is a detection distance between the detection unit 31 of the sensor 3 and the detected object 231. Within this detection distance range, the detection unit 31 can detect the detected object 231. At this time, it indicates that the end of the C-arm structure 10 provided in this embodiment has not collided with other objects. If the detection unit 31 cannot detect the detected object 231, it indicates that the detected object 231 is outside the distance range. At this time, it indicates that the end of the C-arm structure 10 provided in this embodiment has collided with other objects. At this time, the sensor 3 transmits the detected position signal to the controller, and the controller controls the C-arm structure 10 to adjust the direction of movement.

[0048] The detection unit 31 can be a detection probe or the like. No specific limitations are imposed on the detection unit 31 here.

[0049] In the C-arm structure provided in this embodiment, when the end of the C-arm body 1 slightly collides with the guide bed 20, the elastic element 22 can effectively absorb and mitigate the impact force generated by the collision. Specifically, the elastic element 22 deforms, converting the collision energy into its own elastic potential energy, thereby significantly reducing the impact on the C-arm body 1 and lowering the risk of structural deformation and damage to electronic components in the C-arm structure 10.

[0050] Furthermore, sensor 3 can detect the position of the detected component 231 in real time. Since the detection unit 31 of sensor 3 can detect the position of the detected component 231, when the moving module 23 moves due to external force, sensor 3 can quickly sense the change in the position of the detected component 231. This precise detection method, compared to collision avoidance methods in related technologies, has no monitoring blind spots, can promptly detect any possible collision hazards, and is not affected by environmental interference, thus improving the overall stability of the medical device.

[0051] It should be noted that in the medical device provided in this embodiment, the object of collision of the C-arm structure 10 is not limited to the catheter bed 20, but can also be other objects. No limitation is made here. In the following description, the catheter bed 20 will be used as an example for further explanation.

[0052] In some embodiments, the moving module 23 further includes a moving part 232 and a guide post 233. The moving part 232 can move flexibly under the connection of the elastic part 22. One end of the guide post 233 is connected to the detected part 231, and the other end passes through the fixing part 21 and is connected to the moving part 232. The guide post 233 and the fixing part 21 are in sliding fit.

[0053] Thus, through the sliding cooperation between the guide post 233 and the fixing member 21, the movement of the moving module 23 can be guided to a certain extent, thereby improving the stability of the moving module 23 during the movement process and further enhancing the structural stability of the C-arm structure 10 provided in this embodiment.

[0054] Please continue to combine Figures 5 to 7 , Figure 5 This is a three-dimensional structural diagram of a partial structure of the C-arm structure provided in an embodiment of this application. Figure 6 for Figure 5 A partial structural diagram, Figure 7 This is a three-dimensional structural diagram of the fixing member in the C-arm structure provided in the embodiment of this application.

[0055] In some optional embodiments, the fastener 21 is a plate-like structure, and the fastener 21 is detachably connected to the C-arm body 1 to facilitate the installation, maintenance, and repair of the equipment. When it is necessary to inspect or replace parts of the C-arm structure 10, the operator can easily remove the fastener 21 from the C-arm body 1, greatly improving work efficiency.

[0056] Specifically, a first connecting hole 211 can be provided at the corner of the fixing member 21, and correspondingly, a second connecting hole 11 corresponding to the first connecting hole 211 can be provided on the C-arm body 1. Fasteners passing through the first connecting hole 211 and the second connecting hole 11 can detachably connect the fixing member 21 to the C-arm body 1. Of course, in other embodiments, the fixing member 21 and the C-arm body 1 can also be connected by a detachable connection method such as a snap-fit ​​connection. Here, no specific limitation is made on the connection method between the fixing member 21 and the C-arm body 1.

[0057] To improve the flexibility of the C-arm structure 10 during movement, in some embodiments, the fixing member 21 is provided with a first weight-reducing hole 212. This not only reduces the weight of the entire C-arm structure 10 and lowers energy consumption, but also makes the C-arm structure 10 more flexible during movement, reducing the pressure on other components of the equipment caused by its excessive weight.

[0058] Furthermore, a weight-reduction notch 213 is provided on the fastener 21. In this way, the weight of the fastener 21 itself can be further reduced.

[0059] To secure the sensor 3 and minimize its space requirements, in some embodiments, the fixing member 21 has a first fixing hole 214. The sensor 3 is disposed within the first fixing hole 214, and the detection part 31 extends out of the first fixing hole 214 and is located on the side of the fixing member 21 opposite to the moving member 232. This arrangement not only minimizes the space requirements but also allows the sensor 3 to better detect the position of the detected member 231.

[0060] In some specific implementations, taking the fixing plate as an example, two first fixing holes 214 can be formed on the fixing plate. The two first fixing holes 214 are respectively located on both sides of the first weight reduction hole 212. The two first fixing holes 214 are symmetrically arranged about the central axis of the fixing plate. A sensor 3 is installed in each first fixing hole 214, and each sensor 3 corresponds to one detected component 231. This symmetrical design can improve the accuracy of detection, so as to promptly detect the collision risk at different positions of the end of the C-arm body 1.

[0061] In some alternative embodiments, the elastic element 22 is a spring, and the spring is sleeved on the guide post 233. In this embodiment, there are multiple guide posts 233, and multiple guide posts 233 are arranged one-to-one with multiple springs, so that the moving module 23 is more stable during movement, avoiding shaking or deviation, and further improving the accuracy of buffering and detection.

[0062] In a specific implementation of this embodiment, four guide posts 233 can be provided, that is, four springs can also be provided. Two guide posts 233 are located on the same side as one sensor 3, and the other two guide posts 233 are located on the same side as another sensor 3. The two guide posts 233 are detachably connected to a detected component 231.

[0063] Please continue to combine Figure 8 , Figure 8 This is a three-dimensional structural diagram of the tested component in the C-arm structure provided in this application embodiment. As shown, the tested component 231 includes a connecting plate 2311. The connecting plate 2311 has two first through holes 2312, each corresponding to a guide post 233. The end of the guide post 233 has a stop end 2331, which stops against the side of the fixing member 21 opposite to the moving member 232 and is connected to the connecting plate 2311. The connection method here can also be through fasteners, such as threaded fasteners. Here, the connection method between the guide post 233 and the tested component 231 is not limited.

[0064] In some embodiments, to strengthen the structure of the tested component 231, a reinforcing plate 2313 perpendicular to the connecting plate 2311 can be connected to the connecting plate 2311. This can improve the structural strength of the tested component 231.

[0065] Of course, the fixing member 21 should also be provided with a second through hole 215 corresponding to the first through hole 2312, so that the guide post 233 can pass through and slide with it. It should be noted that in some embodiments, lubricating oil can be applied between the second through hole 215 and the guide post 233. In this way, the smoothness of the guide post 233 during movement can be improved, thereby improving the smoothness of the moving module 23 during movement. Thus, when the end of the C-arm structure 10 collides with the guide bed 20, the moving module 23 can move immediately to buffer the impact and allow the sensor 3 to transmit the position signal to the sensor.

[0066] In addition, to protect the buffer assembly 2, the C-arm structure 10 provided in this embodiment also includes a protective cover 4 and a buffer ring 6. The protective cover 4 is connected to the movable part 232 and covers the buffer assembly 2, and its outer surface constitutes part of the outer surface of the C-arm structure 10. The buffer ring 6 is disposed between the C-arm body 1 and the protective cover 4. The protective cover 4, the buffer ring 6, and the C-arm body 1 enclose a cavity 5 for accommodating the buffer assembly 2. The combination of the protective cover 4 and the buffer ring 6 can protect the buffer assembly 2 from damage. On the other hand, the buffer ring 6 can form a seal between the C-arm body 1 and the protective cover 4, which can prevent dust, debris, etc. from entering the cavity 5 to a certain extent, thereby improving the structural stability of the buffer assembly 2.

[0067] It is worth noting that in some embodiments, the buffer ring 6 can be an elastic ring, which not only further improves the sealing performance of the buffer ring 6, but also enhances the buffering effect to a certain extent. When the end of the C-arm body 1 collides with the guide bed 20, the elastic ring first bears part of the impact force, and then transmits it to the buffer assembly 2, thus achieving a double buffering effect.

[0068] For example, the material of the buffer ring 6 can be an elastic material such as silicone. No specific limitations are placed on the material of the buffer ring 6.

[0069] The buffer ring 6 can be connected by being bonded between the C-arm body 1 and the protective cover 4. No specific restrictions are placed on the method of fixing the buffer ring 6.

[0070] It should be noted that, in order to improve the overall aesthetics of the C-arm structure 10 provided in this embodiment, the shape of the connection between the protective cover 4 and the buffer ring 6, as well as the shape of the buffer ring 6, are adapted to the contour shape of the C-arm body 1.

[0071] Please combine Figure 9 , Figure 9 This is a three-dimensional structural diagram of the movable component in the C-arm structure provided in this application embodiment. In a specific implementation of this embodiment, the movable component 232 includes a movable body 2321 and two reinforcing connecting plates 2322 disposed on the movable body 2321. Each reinforcing connecting plate 2322 has a third connecting hole 2323. Fasteners, such as threaded fasteners, passing through the third connecting holes 2323, can connect the reinforcing connecting plate 2322 to the protective cover 4. The connection method between the movable body 2321 and the reinforcing connecting plate 2322 can be a fixed connection such as bonding or welding. No limitation is imposed here.

[0072] In other words, the connection between the movable part 232 and the protective cover 4 is also detachable. Therefore, when the protective cover 4 wears out, it can be removed for easy replacement.

[0073] The movable body 2321 includes a main body plate 2324. Similarly, a second weight-reducing hole 2325 can be formed on the main body plate 2324, and two reinforcing connecting plates 2322 are respectively disposed on opposite sides of the second weight-reducing hole 2325. This not only reduces the weight of the entire C-arm structure 10 and reduces energy consumption, but also makes the C-arm structure 10 provided in this embodiment more flexible during movement, reducing the pressure on other components of the equipment caused by its excessive weight.

[0074] Of course, the main body plate 2324 also has a second fixing hole 2326 that mates with the guide post 233. The guide post 233 and the moving part 232 are fixedly connected through the connection of the second fixing hole 2326 and the guide post 233. The connection between the guide post 233 and the second fixing hole 2326 can be achieved by having an external thread on the guide post 233 and an internal thread in the second fixing hole 2326. The guide post 233 and the second fixing hole 2326 are connected together through a threaded engagement.

[0075] To enhance the structural strength of the movable component 232, the aforementioned movable body 2321 further includes flanges 2327 disposed on opposite sides of the main body plate 2324. This enhances the structural strength of the movable component 232, thereby further improving the structural strength of the C-arm structure 10 provided in this embodiment.

[0076] This embodiment also provides a medical device, including an X-ray tube, an image receiver, and the C-arm structure 10 described in the above embodiments; the X-ray tube and the image receiver are respectively disposed on opposite sides of the C-arm body 1. It should be noted that the C-arm structure 10 has been described in detail in the above embodiments and will not be repeated here.

[0077] Applying the aforementioned C-arm structure 10 to medical devices, in conjunction with X-ray tubes and image receivers, enhances the safety and reliability of the entire medical device.

[0078] Furthermore, the medical device provided in this embodiment should also include other modules and / or components that enable the medical device to operate and be used normally. Here, the other modules and / or components included in the medical device will not be described one by one.

[0079] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A C-arm structure, comprising a C-arm body, wherein opposite sides of the C-arm body are respectively used to connect an X-ray tube and an image receiver; characterized in that, The C-arm structure also includes a buffer assembly and sensors; The buffer component includes: A fixing member is connected to the end of the C-arm body, and the sensor is disposed on the fixing member; The elastic element, one end of which is connected to the fixing element; and The moving module has the other end of the elastic element connected to it. The moving module can move along the elastic force direction of the elastic element under the action of an external force. The moving module includes a detection element, and the sensor is used to detect the position of the detection element.

2. The C-arm structure as described in claim 1, characterized in that, The mobile module also includes: The movable member, the other end of which is connected to the elastic member; and A guide post has one end connected to the object being tested and the other end passing through the fixing member and connected to the moving member, and the guide post is slidably engaged with the fixing member.

3. The C-arm structure as described in claim 2, characterized in that, The elastic element is a spring, which is sleeved on the guide post.

4. The C-arm structure as described in claim 3, characterized in that, There are multiple guide posts and multiple springs, and each guide post is arranged in a one-to-one correspondence with a multiple spring.

5. The C-arm structure as described in claim 2, characterized in that, It also includes a protective cover and a buffer ring. The protective cover is connected to the moving part and covers the buffer assembly. The buffer ring is disposed between the protective cover and the C-arm body. The outer surface of the protective cover forms part of the outer surface of the C-arm structure, and the protective cover, the buffer ring, and the C-arm body together enclose a cavity to accommodate the buffer assembly.

6. The C-arm structure as described in claim 5, characterized in that, The protective cover is detachably connected to the movable component; The buffer ring is an elastic ring.

7. The C-arm structure as described in any one of claims 2 to 6, characterized in that, The fastener has a first fixing hole; The sensor is disposed in the first fixing hole, and the detection part of the sensor extends out of the first fixing hole and is located on the side of the fixing member opposite to the moving member.

8. The C-arm structure as described in claim 7, characterized in that, The fastener is a fixing plate, and the fixing plate has two first fixing holes, which are symmetrically arranged about the central axis of the fixing plate. A sensor is disposed in the first fixing hole, and the sensor corresponds to the detected object.

9. The C-arm structure as described in any one of claims 2 to 6, characterized in that, The fastener is detachably connected to the C-arm body; and / or Both the fixing component and the moving component have weight-reducing holes.

10. A medical device, characterized in that, Includes an X-ray tube, an image receiver, and the C-arm structure as described in any one of claims 1 to 9; The X-ray tube and the image receiver are respectively disposed on opposite sides of the C-arm body.

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