Wide-view C-shaped arm X-ray machine and imaging method thereof

Abstract

The invention relates to a wide-view C-shaped arm X-ray machine and an imaging method thereof.The wide-view C-shaped arm X-ray machine comprises a main machine, a C-shaped arm, an X-ray source, a flat panel detector, a first telescopic mechanism, a first translation mechanism and a first swing mechanism, the first telescopic mechanism is arranged at one end of the C-shaped arm and used for driving the first translation mechanism and the flat panel detector to stretch out and draw back, and the first swing mechanism is arranged at the other end of the C-shaped arm and used for driving the X-ray source to swing. The first translation mechanism is arranged on the first telescopic mechanism and used for driving the flat panel detector to translate, and the first swinging mechanism is arranged at the other end of the C-shaped arm and used for driving the X-ray source to swing so as to follow the position of the flat panel detector, so that X-rays emitted by the X-ray source can fall on the flat panel detector. The flat panel detector can move to different imaging positions to obtain images at different positions, and the images are synthesized into a larger image, so that the area of an imaging region is greatly increased, the observation view of a doctor is expanded, and the efficiency and safety of an operation are improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a wide-field-of-view C-arm X-ray machine and an imaging method thereof. Background Art

[0002] With the development of orthopedics, trauma surgery, spine surgery, vascular surgery and interventional surgery in recent years, the number of operating tables has increased dramatically, and doctors' demand for surgical navigation-guided C-arm X-ray machines has gradually increased. In particular, with the development of flat-panel detector technology in recent years, the core components of the C-arm X-ray machine imaging system are gradually being upgraded from image intensifiers to digital X-ray flat-panel detectors. Flat-panel C-arms are gradually becoming the mainstream of the market, and image intensifier technology is gradually being replaced.

[0003] The C-arm X-ray machine mainly includes a mainframe, a C-arm, an X-ray source and a flat-panel detector. The mainframe is equipped with universal wheels at the bottom, which can be moved freely. The C-arm is installed on the mainframe and can rotate in the vertical plane or in the horizontal plane. The X-ray source and the flat-panel detector are fixed at both ends of the C-arm, which can generate two-dimensional images or three-dimensional images. Figure 1 As shown, the black dot part is the imaging area (also called the field of view or FOV) of the C-arm X-ray machine of the related technology. The imaging area is fixed and small in size. The doctor's observation field of view is limited, and little clinical information is obtained during the operation, which affects the efficiency and safety of the operation and needs to be improved. Summary of the invention

[0004] In order to solve the technical problems that the existing C-arm X-ray machine has a small imaging area and a limited observation field of the doctor, the present invention provides a wide field of view C-arm X-ray machine and an imaging method thereof.

[0005] On the one hand, the technical solution provided by the present application is as follows: a wide-field C-arm X-ray machine, comprising a mainframe, a C-arm, an X-ray source and a flat-panel detector, wherein the C-arm is rotatably arranged on the mainframe, and the X-ray source and the flat-panel detector are respectively arranged at both ends of the C-arm, and the C-arm X-ray machine also includes a first telescopic mechanism, a first translation mechanism and a first swing mechanism, wherein the first translation mechanism is arranged on the first telescopic mechanism, and is used to drive the flat-panel detector to translate, the first telescopic mechanism is arranged at one end of the C-arm, and is used to drive the first translation mechanism and the flat-panel detector to extend and retract, and the first swing mechanism is arranged at the other end of the C-arm, and is used to drive the X-ray source to swing to follow the position of the flat-panel detector so that the X-rays emitted by the X-ray source can fall on the flat-panel detector.

[0006] By adopting the above technical solution, the X-ray source and the flat-panel detector of the present application are no longer fixed on the C-arm, but can be moved on the C-arm. The first translation mechanism can drive the flat-panel detector to move to different imaging positions. The function of the first swing mechanism is to drive the X-ray source to swing so that the emitted X-rays can accurately fall on the flat-panel detector. In this way, the flat-panel detector can obtain images at different positions and synthesize these images into a larger image, thereby greatly increasing the area of ​​the imaging area, expanding the doctor's observation field of view, and thereby improving the efficiency and safety of the operation.

[0007] Preferably, the first telescopic mechanism includes a mounting frame, a first slide, a connecting plate, a first guide rail, a first rotating motor, a synchronous wheel and synchronous belt transmission assembly and a screw nut assembly. The mounting frame is fixedly arranged at one end of the C-shaped arm, the first slide is slidably arranged on the mounting frame through the first guide rail, the first rotating motor, the synchronous wheel and synchronous belt transmission assembly and the screw nut assembly are all arranged on the mounting frame, the first rotating motor drives the screw nut assembly through the synchronous wheel and synchronous belt transmission assembly, and the screw nut assembly then drives the first slide to move; the connecting plate is fixedly arranged on the first slide for connecting the first translation mechanism.

[0008] Preferably, the mounting frame is a tripod, and the upper end surface of the mounting frame is an arc-shaped surface that fits with the inner surface of the C-shaped arm.

[0009] By adopting the above technical solution, the mounting frame adopts a tripod, which has a stable structure, high strength, good rigidity and large load; the upper end surface of the mounting frame is an arc-shaped surface, which fits the inner surface of the C-shaped arm, has good assembly stability and good force condition, and can withstand the rotational inertia force of the components thereon.

[0010] Preferably, the first translation mechanism is a two-dimensional orthogonal moving platform for driving the flat panel detector to translate along the X-axis and the Y-axis; the first swing mechanism is a two-dimensional orthogonal swinging platform for driving the X-ray source to swing along the X-axis and the Y-axis.

[0011] Preferably, the first translation mechanism comprises a main mounting plate, an X-axis slide, an X-axis guide rail, an X-axis linear drive motor, a Y-axis slide, a Y-axis guide rail and a Y-axis linear drive motor, the main mounting plate is fixedly arranged on the connecting plate, the X-axis slide is slidably arranged on the main mounting plate via the X-axis guide rail, the X-axis linear drive motor is used to drive the X-axis slide to translate, the Y-axis slide is slidably arranged on the X-axis slide via the Y-axis guide rail, the Y-axis linear drive motor is used to drive the Y-axis slide to translate, and the flat-panel detector is arranged on the Y-axis slide.

[0012] Preferably, the first swing mechanism includes a rotating plate, a rotating frame, a second rotating motor, a first linear motor, a first axis, a second axis and a third axis, the first axis and the second axis are arranged orthogonally, the third axis and the second axis are parallel, the first axis is fixedly set at one end of the C-shaped arm, the rotating plate is rotatably set on the first axis, the second rotating motor is fixedly set on the rotating plate, a first gear is sleeved and fixed on the first axis, a second gear is provided on the motor shaft of the second rotating motor, the first gear and the second gear are meshed, and the second rotating motor drives the rotating plate to rotate around the first axis through the first gear and the second gear; the rotating frame is hinged on the rotating plate through the second axis, the first linear motor is rotatably set on the rotating frame, the third axis is set on the rotating plate and hinged with the motor shaft of the first linear motor, the first linear motor drives the rotating frame to swing around the second axis by extension and contraction, and the X-ray source is set on the rotating frame.

[0013] Preferably, a conductive slip ring is provided on the C-shaped arm, and the X-ray source and the flat panel detector are electrically connected to the host through the conductive slip ring.

[0014] By adopting the above technical solution, the present application replaces the traditional cable connection method by setting a conductive slip ring on the C-shaped arm. At this time, there is no need to consider the problem of cable interference during the movement of the C-shaped arm, thereby improving the movement freedom of the C-shaped arm.

[0015] Preferably, the conductive slip ring includes a C-shaped slide rail and a plurality of sliding columns, the C-shaped slide rail is fixedly arranged on the side of the C-shaped arm, the host is provided with a wiring board, the sliding column is fixedly arranged on the wiring board, one end of the sliding column extends into the C-shaped slide rail, contacts the C-shaped slide rail, and can slide relative to the C-shaped slide rail.

[0016] Preferably, the main machine includes a base, a lifting shaft, a first rotating arm, a telescopic arm, a second rotating arm and a first rotating mechanism, the lifting shaft is arranged on the base, the first rotating arm is arranged on the lifting shaft, the telescopic arm is arranged on the first rotating arm, the second rotating arm is arranged on the telescopic arm, and the first rotating mechanism is arranged on the second rotating arm. The lifting shaft is used to drive the C-shaped arm to lift and lower, the first rotating arm is used to drive the C-shaped arm to rotate in a horizontal plane, the telescopic arm is used to drive the C-shaped arm to extend and retract horizontally, the second rotating arm is used to drive the C-shaped arm to rotate in a vertical plane, and the first rotating mechanism is used to drive the C-shaped arm to rotate around its own axis.

[0017] On the other hand, the present application also provides the following technical solution: an imaging method of the above-mentioned wide-field C-arm X-ray machine, comprising the following steps: S1, using a first translation mechanism to move the flat panel detector to a first imaging position, using a first swing mechanism to swing the X-ray source to an angle corresponding to the flat panel detector, starting the X-ray source, and the flat panel detector obtains a first image; S2, using the first translation mechanism to move the flat panel detector to a second imaging position, using the first swing mechanism to swing the X-ray source to an angle corresponding to the flat panel detector, starting the X-ray source, and the flat panel detector obtains a second image, wherein the second image has an overlapping portion with the first image; S3, synthesizing the first image and the second image, removing the overlapping parts, and obtaining a two-dimensional image.

[0018] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application utilizes a first translation mechanism to drive the flat panel detector to move to different positions, and utilizes a first swing mechanism to drive the X-ray source to swing along with the movement of the flat panel detector, thereby obtaining images at different positions, and synthesizing the images into a larger image, thereby greatly increasing the imaging area, and facilitating observation and diagnosis by doctors; 2. The mounting frame described in this application adopts a tripod, which has a stable structure, high strength, good rigidity and large load; the upper end surface of the mounting frame is an arc-shaped surface, which fits the inner surface of the C-shaped arm, has good assembly stability and good force condition, and can withstand the rotational inertia force of the components thereon.

[0019] 3. The present application replaces the traditional cable connection method by setting a conductive slip ring on the C-shaped arm. In this case, there is no need to consider the problem of cable interference during the movement of the C-shaped arm, thereby improving the movement freedom of the C-shaped arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the imaging area of ​​a C-arm X-ray machine in the prior art; Figure 2 is a schematic diagram of the three-dimensional structure of the C-arm X-ray machine described in the embodiment of the present application; Figure 3 is a schematic diagram of the three-dimensional structure of the first telescopic mechanism, the first translation mechanism and the flat panel detector in the embodiment of the present application; Figure 4 yes Figure 3 The structure shown hides the structural side view of the mounting frame; Figure 5 is a schematic diagram of the three-dimensional structure of the first swing mechanism and the X-ray source in the embodiment of the present application; Figure 6 is a front view of the first swing mechanism and the X-ray source; Figure 7 is a top view of the first swing mechanism and the X-ray source; Figure 8 yes Figure 7 Middle AA section view; Fig. 9 is a top view of the host described in the embodiment of the present application; Fig.10 yes Fig. 9 Middle BB section view; Fig.11 It is a schematic diagram of the disassembly of the connection part between the C-arm and the host according to the embodiment of the present application; Fig.12 The C-arm X-ray machine according to the embodiment of the present application shows a front view of a first protective shell and a second protective shell; Fig.13 It is a schematic diagram of the X-direction imaging area of ​​the C-arm X-ray machine described in the embodiment of the present application.

[0021] Description of reference numerals: 1. host; 11. wiring board; 12. base; 13. lifting shaft; 14. first rotating arm; 15. telescopic arm; 16. second rotating arm; 17. first rotating mechanism; 2. C-shaped arm; 21. conductive slip ring; 211. C-shaped slide rail; 212. sliding column; 3. X-ray source; 4. flat panel detector; 5. first telescopic mechanism; 51. mounting frame; 52. first slide plate; 53. connecting plate; 54. first guide rail; 55. first rotating motor; 56. synchronous wheel and synchronous belt transmission assembly; 57 , screw nut assembly; 6, first translation mechanism; 61, main mounting plate; 62, X-axis slide; 63, X-axis guide rail; 64, X-axis linear drive motor; 65, Y-axis slide; 66, Y-axis guide rail; 67, Y-axis linear drive motor; 7, first swing mechanism; 71, rotating plate; 72, rotating frame; 73, second rotating motor; 74, first linear motor; 75, first axis; 751, first gear; 752, second gear; 76, second axis; 77, third axis; 8, first protective shell; 9, second protective shell. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-12 This application is described in further detail.

[0023] Reference Figure 2The embodiment of the present application discloses a wide-field C-arm X-ray machine, comprising a mainframe, a C-arm, an X-ray source and a flat-panel detector, wherein the C-arm is rotatably arranged on the mainframe, and the X-ray source and the flat-panel detector are respectively arranged at two ends of the C-arm, and the C-arm X-ray machine also comprises a first telescopic mechanism, a first translation mechanism and a first swing mechanism, wherein the first translation mechanism is arranged on the first telescopic mechanism and is used to drive the flat-panel detector to translate, the first telescopic mechanism is arranged at one end of the C-arm and is used to drive the first translation mechanism and the flat-panel detector to extend and retract, and the first swing mechanism is arranged at the other end of the C-arm and is used to drive the X-ray source to swing to follow the position of the flat-panel detector so that the X-rays emitted by the X-ray source can fall on the flat-panel detector.

[0024] Reference Fig. 9 and Fig.10 The host comprises a base, a lifting shaft, a first rotating arm, a telescopic arm, a second rotating arm and a first rotating mechanism, wherein the lifting shaft is arranged on the base, the first rotating arm is arranged on the lifting shaft, the telescopic arm is arranged on the first rotating arm, the second rotating arm is arranged on the telescopic arm, the lifting shaft is used to drive the C-shaped arm to lift and lower, the first rotating arm is used to drive the C-shaped arm to rotate in the horizontal plane, the telescopic arm is used to drive the C-shaped arm to extend and retract horizontally, the second rotating arm is used to drive the C-shaped arm to rotate in the vertical plane, and the first rotating mechanism is used to drive the C-shaped arm to rotate around its own axis. In this way, the C-shaped arm can perform a variety of movements, and the position of the C-shaped arm can be fully adjusted to ensure that the patient's lesion point coincides with the focus of the C-shaped arm during the operation, so as to obtain accurate imaging of the lesion.

[0025] Reference Figure 3 and Figure 4The first telescopic mechanism includes a mounting frame, a first slide, a connecting plate, a first guide rail, a first rotating motor, a synchronous wheel synchronous belt transmission assembly and a screw nut assembly. The mounting frame is fixedly arranged at one end of the C-shaped arm, and the first slide is slidably arranged on the mounting frame through the first guide rail. The first rotating motor, the synchronous wheel synchronous belt transmission assembly and the screw nut assembly are all arranged on the mounting frame. The first rotating motor drives the screw nut assembly through the synchronous wheel synchronous belt transmission assembly, and the screw nut assembly drives the first slide to move; the connecting plate is fixedly arranged on the first slide and is used to connect the first translation mechanism. The first telescopic mechanism is used to drive the flat panel detector to telescope to change the distance between it and the X-ray source. First, it can change the size of the image, and second, it can be fine-tuned to align the focus and accurately image. Since the first telescopic mechanism needs to drive the first translation mechanism and the flat panel detector to move, and the C-shaped arm drives the first telescopic mechanism to perform various movements, the first translation mechanism and the flat panel detector have large masses and large inertia, so the structural strength requirements are high, and the accuracy of the movement must be ensured. This embodiment adopts the configuration of motor, synchronous wheel, synchronous belt and screw nut, which has good strength and ensures the linearity, smoothness and high response performance of the movement. The first rotating motor and the screw nut assembly are respectively located on the left and right sides of the first slide plate, and the mass distribution is balanced, which reduces the influence of movement vibration and high energy consumption caused by unreasonable center of gravity.

[0026] Reference Figure 3 The mounting frame is a tripod, and the upper end surface of the mounting frame is an arc-shaped surface, which fits the inner surface of the C-shaped arm. The mounting frame adopts a tripod, which has a stable structure, high strength, good rigidity, and large load; the upper end surface of the mounting frame is an arc-shaped surface, which fits the inner surface of the C-shaped arm, has good assembly stability, good force condition, and can withstand the rotational inertia force of the upper components.

[0027] Reference Figure 3 and Figure 4 , the first translation mechanism is a two-dimensional orthogonal moving platform, which is used to drive the flat-panel detector to translate along the X-axis and the Y-axis; the first swing mechanism is a two-dimensional orthogonal swing platform, which is used to drive the X-ray source to swing along the X-axis and the Y-axis. According to actual needs, the first translation mechanism can only translate along the X-axis, or only translate along the Y-axis, only increasing the length or width of the imaging; it can also translate along both the X-axis and the Y-axis to increase the length and width of the imaging. In order to enable the X-ray source to follow the position of the flat-panel detector, the first swing mechanism needs to be able to drive the X-ray source to swing along the X-axis and the Y-axis.

[0028] Reference Figure 3 and Figure 4The first translation mechanism includes a main mounting plate, an X-axis slide, an X-axis guide rail, an X-axis linear drive motor, a Y-axis slide, a Y-axis guide rail, and a Y-axis linear drive motor. The main mounting plate is fixedly arranged on the connecting plate. The X-axis slide is slidably arranged on the main mounting plate through the X-axis guide rail. The X-axis linear drive motor is used to drive the X-axis slide to translate. The Y-axis slide is slidably arranged on the X-axis slide through the Y-axis guide rail. The Y-axis linear drive motor is used to drive the Y-axis slide to translate. The flat-panel detector is arranged on the Y-axis slide. This embodiment adopts an X-axis linear drive motor and a Y-axis linear drive motor, which can steplessly adjust the position of the flat-panel detector and can better ensure the straightness and smoothness of the movement, so that the images taken multiple times can be better spliced ​​and synthesized.

[0029] Reference Figures 5 to 8 The first swing mechanism includes a rotating plate, a rotating frame, a second rotating motor, a first linear motor, a first axis, a second axis and a third axis, the first axis and the second axis are arranged orthogonally, the third axis and the second axis are parallel, the first axis is fixedly set at one end of the C-shaped arm, the rotating plate is rotatably set on the first axis, the second rotating motor is fixedly set on the rotating plate, a first gear is sleeved and fixed on the first axis, a second gear is provided on the motor shaft of the second rotating motor, the first gear and the second gear are meshed, and the second rotating motor drives the rotating plate to rotate around the first axis through the first gear and the second gear; the rotating frame is hinged on the rotating plate through the second axis, the first linear motor is rotatably set on the rotating frame, the third axis is set on the rotating plate and hinged with the motor shaft of the first linear motor, the first linear motor drives the rotating frame to swing around the second axis by extension and contraction, and the X-ray source is set on the rotating frame.

[0030] The first swing mechanism of this embodiment needs to be able to realize swinging motion in both the X-axis and the Y-axis. When the second rotary motor rotates, through the cooperation of the first gear and the second gear, since the first axis and the first gear are fixed and cannot rotate, the second rotary motor, the second gear and the rotating plate are forced to rotate around the first axis, thereby realizing swinging in the X direction; avoidance holes need to be set on the mounting frame to provide avoidance space when the second rotary motor rotates. When the first linear motor is extended and retracted, the first linear motor will be forced to retreat relative to the rotating plate, and it will also swing at a certain angle, and the mounting frame will swing around the second axis, thereby realizing swinging in the Y direction; the first swing mechanism of this application has a small size, small mass, and small rotational inertia.

[0031] Reference Fig.11, the C-shaped arm is provided with a conductive slip ring, and the X-ray source and the flat panel detector are electrically connected to the main unit through the conductive slip ring. More specifically, the conductive slip ring includes a C-shaped slide rail and a plurality of sliding columns, the C-shaped slide rail is fixedly arranged on the side of the C-shaped arm, the main unit is provided with a wiring board, the sliding column is fixedly arranged on the wiring board, one end of the sliding column extends into the C-shaped slide rail, contacts the C-shaped slide rail, and can slide relative to the C-shaped slide rail. The traditional C-shaped arm and the main unit are electrically connected through cables to provide power and realize signal control and signal transmission, but the movement dimensions of the C-shaped arm are multiple and complex. If the cables are built-in, they are easy to be entangled; if the cables are external, they appear messy and unsightly, and are also prone to wear. For this reason, the present embodiment adopts a conductive slip ring, which can realize a sliding motion connection, that is, it can provide power supply and signal transmission function, and there is no cable entanglement problem at all.

[0032] Reference Fig.12 In this embodiment, a first protective shell and a second protective shell are provided. The first protective shell is arranged outside the first telescopic mechanism, and the second protective shell is arranged outside the X-ray source and the first swing mechanism to hide and protect various internal mechanical structures, prevent external objects from affecting various movements of the structure on the C-arm, and improve safety and aesthetics.

[0033] The imaging method of the wide-field C-arm X-ray machine described in this embodiment comprises the following steps: S1, using a first translation mechanism to move the flat panel detector to a first imaging position, using a first swing mechanism to swing the X-ray source to an angle corresponding to the flat panel detector, starting the X-ray source, and the flat panel detector obtains a first image; S2, using the first translation mechanism to move the flat panel detector to a second imaging position, using the first swing mechanism to swing the X-ray source to an angle corresponding to the flat panel detector, starting the X-ray source, and the flat panel detector obtains a second image, wherein the second image has an overlapping portion with the first image; S3, synthesizing the first image and the second image, removing the overlapping parts, and obtaining a two-dimensional image.

[0034] The present application is not limited to taking only two images for synthesis, but can take more images for synthesis, such as obtaining multiple images in the X direction and multiple images in the Y direction, and finally synthesizing a final two-dimensional image that is several times the area of ​​the flat panel detector.

[0035] Of course, the present application can also generate a three-dimensional image. After step S3, step S4 is added to move or rotate the C-arm, and steps S1-S3 are repeated to obtain a two-dimensional image at another angle; step S5 is to repeat step S4 to obtain a set of two-dimensional images at consecutive angles, and all the two-dimensional images are synthesized to obtain a three-dimensional image.

[0036] The X-ray source and the flat-panel detector of the present application are no longer fixedly arranged on the C-shaped arm, but can be moved on the C-shaped arm. The first translation mechanism can drive the flat-panel detector to move to different imaging positions. The function of the first swing mechanism is to drive the X-ray source to swing so that the emitted X-rays can accurately fall on the flat-panel detector, so that the flat-panel detector can obtain images at different positions, such as Fig.13 As shown in the figure (only two imaging areas in the X direction are shown, and the same applies to the Y direction), these images are combined into a larger image, thereby greatly increasing the area of ​​the imaging area, expanding the doctor's observation field of view, and thus improving the efficiency and safety of the operation.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wide-field C-arm X-ray machine, comprising a mainframe, a C-arm, an X-ray source and a flat-panel detector, wherein the C-arm is rotatably arranged on the mainframe, and the X-ray source and the flat-panel detector are respectively arranged at both ends of the C-arm, characterized in that: It also includes a first telescopic mechanism, a first translation mechanism and a first swing mechanism. The first telescopic mechanism is arranged at one end of the C-shaped arm, and is used to drive the first translation mechanism and the flat-panel detector to telescope. The first translation mechanism is arranged on the first telescopic mechanism, and is used to drive the flat-panel detector to translate. The first swing mechanism is arranged at the other end of the C-shaped arm, and is used to drive the X-ray source to swing to follow the position of the flat-panel detector so that the X-rays emitted by the X-ray source can fall on the flat-panel detector.

2. The wide field of view C-arm X-ray machine according to claim 1, characterized in that: The first telescopic mechanism includes a mounting frame, a first slide, a connecting plate, a first guide rail, a first rotating motor, a synchronous wheel and synchronous belt transmission assembly, and a screw nut assembly. The mounting frame is fixedly arranged at one end of the C-shaped arm, and the first slide is slidably arranged on the mounting frame through the first guide rail. The first rotating motor, the synchronous wheel and synchronous belt transmission assembly, and the screw nut assembly are all arranged on the mounting frame. The first rotating motor drives the screw nut assembly through the synchronous wheel and synchronous belt transmission assembly, and the screw nut assembly drives the first slide to move; the connecting plate is fixedly arranged on the first slide for connecting the first translation mechanism.

3. The wide field of view C-arm X-ray machine according to claim 2, characterized in that: The mounting frame is a tripod, and the upper end surface of the mounting frame is an arc-shaped surface, which fits with the inner surface of the C-shaped arm.

4. The wide field of view C-arm X-ray machine according to claim 2, characterized in that: The first translation mechanism is a two-dimensional orthogonal moving platform, which is used to drive the flat panel detector to translate along the X-axis and the Y-axis; the first swing mechanism is a two-dimensional orthogonal swinging platform, which is used to drive the X-ray source to swing along the X-axis and the Y-axis.

5. The wide-viewing-field C-arm X-ray machine according to claim 4, characterized in that: The first translation mechanism includes a main mounting plate, an X-axis slide, an X-axis guide rail, an X-axis linear drive motor, a Y-axis slide, a Y-axis guide rail and a Y-axis linear drive motor. The main mounting plate is fixedly arranged on the connecting plate, the X-axis slide is slidably arranged on the main mounting plate through the X-axis guide rail, the X-axis linear drive motor is used to drive the X-axis slide to translate, the Y-axis slide is slidably arranged on the X-axis slide through the Y-axis guide rail, the Y-axis linear drive motor is used to drive the Y-axis slide to translate, and the flat-panel detector is arranged on the Y-axis slide.

6. The wide-viewing-field C-arm X-ray machine according to claim 4, characterized in that: The first swing mechanism comprises a rotating plate, a rotating frame, a second rotating motor, a first linear motor, a first axis, a second axis and a third axis, wherein the first axis and the second axis are arranged orthogonally, the third axis and the second axis are parallel, the first axis is fixedly arranged at one end of the C-shaped arm, the rotating plate is rotatably arranged on the first axis, the second rotating motor is fixedly arranged on the rotating plate, a first gear is sleeved and fixed on the first axis, a second gear is arranged on the motor shaft of the second rotating motor, the first gear and the second gear are meshed, and the second rotating motor drives the rotating plate to rotate around the first axis through the first gear and the second gear; The rotating frame is hinged on the rotating plate through a second axis, the first linear motor is rotatably arranged on the rotating frame, the third axis is arranged on the rotating plate and is hinged to the motor shaft of the first linear motor, the first linear motor drives the rotating frame to swing around the second axis by extending and shortening, and the X-ray source is arranged on the rotating frame.

7. The wide-viewing-field C-arm X-ray machine according to claim 1, characterized in that: The C-shaped arm is provided with a conductive slip ring, and the X-ray source and the flat panel detector are both electrically connected to the host through the conductive slip ring.

8. The wide-viewing-field C-arm X-ray machine according to claim 7, characterized in that: The conductive slip ring includes a C-shaped slide rail and a plurality of sliding columns. The C-shaped slide rail is fixedly arranged on the side of the C-shaped arm. A wiring board is provided on the host. The sliding column is fixedly arranged on the wiring board. One end of the sliding column extends into the C-shaped slide rail, contacts the C-shaped slide rail, and can slide relative to the C-shaped slide rail.

9. The wide field of view C-arm X-ray machine according to claim 1, characterized in that: The main machine includes a base, a lifting shaft, a first rotating arm, a telescopic arm, a second rotating arm and a first rotating mechanism. The lifting shaft is arranged on the base, the first rotating arm is arranged on the lifting shaft, the telescopic arm is arranged on the first rotating arm, the second rotating arm is arranged on the telescopic arm, and the first rotating mechanism is arranged on the second rotating arm. The lifting shaft is used to drive the C-shaped arm to lift and lower, the first rotating arm is used to drive the C-shaped arm to rotate in a horizontal plane, the telescopic arm is used to drive the C-shaped arm to extend and retract horizontally, the second rotating arm is used to drive the C-shaped arm to rotate in a vertical plane, and the first rotating mechanism is used to drive the C-shaped arm to rotate around its own axis.

10. An imaging method of a wide-field C-arm X-ray machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, using a first translation mechanism to move the flat panel detector to a first imaging position, using a first swing mechanism to swing the X-ray source to an angle corresponding to the flat panel detector, starting the X-ray source, and the flat panel detector obtains a first image; S2, using the first translation mechanism to move the flat panel detector to a second imaging position, using the first swing mechanism to swing the X-ray source to an angle corresponding to the flat panel detector, starting the X-ray source, and the flat panel detector obtains a second image, wherein the second image has an overlapping portion with the first image; S3, synthesizing the first image and the second image, removing the overlapping parts, and obtaining a two-dimensional image.

Images