A medical digital x-ray radiography system

Abstract

The application discloses a kind of medical digital X-ray photography systems, belong to medical instrument technical field, including ray generating device, telescopic arm being connected with ray generating device, column for supporting telescopic arm, image receiving system being connected with ray generating device, the output end of telescopic arm is equipped with steering wheel, the output shaft of steering wheel is connected to ray generating device by rotating hydraulic damper;Rotating hydraulic damper includes proximal end shell surface, circular shell, distal end shell surface, rotating reset device, rotating disc, outer sector, outer vane, proximal end shell surface is fixedly connected with ray generating device, proximal end shell surface is simultaneously connected to distal end shell surface parallel with it by circular shell, first liquid cavity is formed between proximal end shell surface, circular shell, distal end shell surface, output shaft is simultaneously rotationally sealed with the center hole of proximal end shell surface and distal end shell surface connection.The system can be used to buffer the inertia of supporting arm when frequent displacement, to ensure the detection accuracy of system.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular relates to a medical digital X-ray photography system. Background Art

[0002] As one of the core devices in modern medical imaging diagnosis, digital medical X-ray systems have been widely used in clinical radiology departments, emergency departments, orthopedics departments, and physical examination centers due to their advantages, such as high resolution, fast imaging, and digital workflow. This system uses an X-ray tube to transmit X-rays through the human body. Flat-panel detectors receive the signals and convert them into digital images for doctors to diagnose diseases. With the advancement of medical technology, digital medical X-ray systems are continuously evolving towards higher precision, faster imaging speeds, and more flexible operation to meet the needs of diverse clinical scenarios. The X-ray tube support arm is the system's core moving component, and its design directly determines the device's flexibility and imaging accuracy. Common support arm configurations include ceiling-mounted, column-mounted, and C-arm-mounted types. These require rapid adjustment of the X-ray tube's projection position at different angles to accommodate imaging requirements in various body positions. However, during the long-term use of the X-ray tube, the system frequently adjusts the projection angle. For example, when switching from a supine position to a standing position, the connection between the support arm and the X-ray tube may slightly deform or shake due to long-term load or material fatigue, causing the X-ray focus position to shift, which will cause geometric distortion of subsequent detection images, especially affecting the accuracy of orthopedic or chest X-ray measurements. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a medical digital X-ray imaging system that can be used to buffer the inertia of the support arm during frequent displacements to ensure the detection accuracy of the system.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention discloses a medical digital X-ray photography system, comprising a ray generating device, a telescopic arm connected to the ray generating device, a column for supporting the telescopic arm, and an image receiving system connected to the ray generating device. The output end of the telescopic arm is equipped with a servo, and the output shaft of the servo is connected to the ray generating device through a rotary hydraulic damper; the rotary hydraulic damper comprises a proximal shell surface, a circular shell, a distal shell surface, a rotational reset device, a rotating disk, an outer fan ring, and outer fan blades. The proximal shell surface is fixedly connected to the ray generating device, and the proximal shell surface is simultaneously connected to the distal shell surface parallel to it through the circular shell surface. The proximal shell surface, the circular shell surface, and the distal shell surface are combined to form a first liquid storage chamber. The output shaft is simultaneously rotatably sealed with the center holes of the proximal shell surface and the distal shell surface. The rotational reset device is used to connect the output shaft to the proximal shell surface. The output shaft is also fixedly connected to the rotating disk, and the rotating disk is rotatably installed in the first liquid storage chamber. The side of the rotating disk is fixed with an outer fan ring, and the outer side of the outer fan ring is evenly spaced. A plurality of outer fan blades are evenly distributed.

[0006] Furthermore, an inner fan ring is fixed to the side of the rotating disk. The inner fan ring is coaxially arranged on the inner side of the outer fan ring, and a plurality of inner fan blades are evenly spaced on the outer side of the inner fan ring.

[0007] Furthermore, the rotation reset device includes a spiral spring, the outer end of the spring is fixedly connected to the proximal shell surface, the inner end of the spring is integrally formed with a slide, and the outer surface of the output shaft is provided with a slide groove that slides with the slide; the rotating disk is axially spaced apart from the proximal shell surface and the distal shell surface, and the end surfaces of the two groups of inner fan rings on both sides of the rotating disk are provided with a first rotation groove, and a first rotating ring is rotatably installed in the first rotation groove, and the two groups of first rotating rings are respectively connected to the distal shell surface and the proximal shell surface through a first support spring.

[0008] Furthermore, a second rotating groove is opened on the inner side of the center hole of the proximal shell surface, and a second rotating ring is installed in the second rotating groove for rotational sealing. An isolation sleeve is connected between the second rotating ring and the output shaft, and the large end and small end of the isolation sleeve are sealed with the second rotating ring and the output shaft respectively.

[0009] Furthermore, end face blades are provided on the inner sides of the proximal shell surface and the distal shell surface, and the end face blades are radially located between the outer blades and the inner blades.

[0010] Furthermore, a number of sliding tubes are evenly spaced on the outside of the outer fan ring, a bracket is slidably installed in the sliding tube, the outer end of the bracket is fixedly connected to a rotating shaft, a roller is rotatably installed on the rotating shaft, and a tension spring is connected between the bracket and the sliding tube; a radial damping assembly is installed on the circular shell, and the radial damping assembly corresponds to the roller.

[0011] Furthermore, the radial damping assembly includes an annular shell, the cross-section of the annular shell is U-shaped and its opening faces the circular shell, the annular shell is fixed to the outside of the circular shell and is surrounded by the circular shell to form a second liquid chamber, the radial damping assembly also includes a guide column, a limit plate, a second support spring and a spring plate, the guide column is radially slidingly sealed and installed in a guide hole opened on the circular shell, the outer end of the guide column extends into the second liquid chamber and is connected to the limit plate, the second support spring is connected between the limit plate and the annular shell, and a spring plate is installed on the outside of the guide column.

[0012] Furthermore, the bracket has two supporting legs, and the two supporting legs correspond to two sliding tubes respectively. The two sliding tubes are arranged on both sides of the rotating disk.

[0013] Furthermore, the sliding tube is threadedly connected to the outer fan ring, and the length of the sliding tube extending outward can be adjusted by rotating the sliding tube.

[0014] The beneficial effects of the present invention are:

[0015] The present invention discloses a medical digital X-ray photography system. A rotary hydraulic damper is installed between a telescopic arm and a radiation generating device. Before the output shaft transmits torque to the radiation generating device, the output shaft first passes through the rotary hydraulic damper for damping and buffering. This reduces the inertial impact of the support arm when controlling the frequent displacement of the radiation generating device, thereby better protecting the system and ensuring the detection accuracy of the system during subsequent use.

[0016] The damping and buffering of the present invention is achieved by stirring the buffer oil through the outer fan blades. The rotating disk drives the outer fan blades to move in the damping liquid, generating uniform viscous resistance, effectively suppressing mechanical vibration and inertial swing. In this way, the damping and buffering are more direct and will not affect the transmission of torque. The rotary hydraulic damper has a compact structure, stable operation and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0018] Figure 1 Schematic diagram of the structure of the photography system of the present invention;

[0019] Figure 2 Schematic diagram of the structure of the rotary hydraulic damper Figure 1 ;

[0020] Figure 3 Schematic diagram of the structure of the rotary hydraulic damper Figure 2 ;

[0021] Figure 4 Schematic diagram of the internal structure of the rotary hydraulic damper;

[0022] Figure 5 for Figure 4 Cross-sectional view in

[0023] Figure 6 It is a structural diagram of the rotation reset device;

[0024] Figure 7 is a schematic diagram of the structure of the bracket;

[0025] Figure 8 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 9 for Figure 5 Enlarged view of point B in the middle;

[0027] Figure 10 for Figure 5 Enlarged view of point C in the middle;

[0028] Figure 11 for Figure 2 Enlarged view of point D in the middle;

[0029] Figure 12 It is a partial cross-sectional view of the present invention.

[0030] The markings in the accompanying drawings are as follows: ray generating device 1, telescopic arm 2, column 3, servo 4, rotary hydraulic damper 5, proximal shell surface 6, circular shell surface 7, distal shell surface 8, rotation reset device 9, rotating disk 10, outer fan ring 11, outer fan blade 12, output shaft 13, inner fan ring 14, inner fan blade 15, coil spring 16, slide plate 17, slide plate groove 18, first rotating groove 19, first rotating ring 20, first support spring 21, second rotating groove 22, second rotating ring 23, isolation sleeve 24, end face fan blade 25, sliding tube 26, bracket 27, rotating shaft 28, roller 29, tension spring 30, annular shell 31, second liquid chamber 32, guide column 33, limit plate 34, second support spring 35, spring plate 36, guide hole 37, support foot 38. DETAILED DESCRIPTION

[0031] like Figures 1 to 11As shown, the present invention discloses a medical digital X-ray photography system, comprising a ray generating device 1, a telescopic arm 2 connected to the ray generating device 1, a column 3 for supporting the telescopic arm 2, and an image receiving system connected to the ray generating device 1. The ray generating device 1 adopts existing technology and its function is to generate a controllable X-ray beam to provide the necessary penetrating radiation source for medical imaging diagnosis. A servo 4 is installed at the output end of the telescopic arm 2, and the output shaft 13 of the servo 4 is connected to the ray generating device 1 through a rotary hydraulic damper 5; the output shaft 13 of the servo 4 is connected to the ray generating device 1, which can change the emission angle of the X-ray to meet actual needs. The image receiving system also adopts existing technology to receive detector data and images. The telescopic arm 2 also adopts existing technology and can be extended and retracted along the normal direction of the proximal shell surface 6 to control the distance that the ray generating device 1 extends outward. The column 3 is used to support the entire device.

[0032] In this embodiment of the present invention, a slider is fixedly connected to the lower end of the upright 3. The slider is slidably mounted on a slide rail and can be moved along the length of the radiographic bed to adjust the X-ray irradiation position. Of course, the slider can be driven by an existing linear displacement device.

[0033] Specifically, the rotary hydraulic damper 5 disclosed in the present invention includes a proximal shell surface 6, a circular shell 7, a distal shell surface 8, a rotation reset device 9, a rotating disk 10, an outer fan ring 11, and an outer fan blade 12. The proximal shell surface 6, the circular shell 7, and the distal shell surface 8 are all circular, and the three are combined to form a circular shell. The proximal shell surface 6 is fixedly connected to the ray generating device 1. The proximal shell surface 6 is also connected to the distal shell surface 8 parallel to it through the circular shell 7. The proximal shell surface 6, the circular shell 7, and the distal shell surface 8 are combined to form a first liquid chamber in the shell. The first liquid chamber and the second liquid chamber 32 are both filled with buffer oil. There should be a certain distance between the distal shell surface 8 and the telescopic arm 2.

[0034] The output shaft 13 is rotatably sealed with the center holes of the proximal shell surface 6 and the distal shell surface 8. The rotary reset device 9 is used to connect the output shaft 13 to the proximal shell surface 6. The output shaft 13 is also fixedly connected to the rotating disk 10. The rotating disk 10 is rotatably installed in the first liquid chamber. An outer fan ring 11 is fixed to the side of the rotating disk 10, and a plurality of outer fan blades 12 are evenly spaced on the outside of the outer fan ring 11.

[0035] The working principle and process of the present invention application are as follows: When the servo 4 receives an instruction from the controller, the servo 4 drives the output shaft 13 to rotate, and the output shaft 13 drives the proximal shell surface 6 and the ray generating device 1 connected thereto to rotate through the rotation reset device 9. When the instantaneous rotation speed of the output shaft 13 is too fast, the inertia causes the rotation reset device 9 to deform, and at the same time, the rotating disk 10 and the outer fan blades 12 connected to the output shaft 13 rotate relative to the shell, and the outer fan blades 12 stir the buffer oil in the first liquid chamber, and the buffer oil buffers the rotating disk 10 and the output shaft 13, thereby reducing the direct effect of the connection part and playing a protective role. Finally, the proximal shell surface 6 can also correspond to the output angle of the output shaft 13 under the action of the rotation reset device 9, ensuring the normal operation of the device.

[0036] It is understandable that the present invention provides a groove on the outer end surface of the proximal shell surface 6 to provide a certain amount of clearance space when axial relative displacement occurs between the output shaft 13 and the proximal shell surface 6 .

[0037] In this embodiment, an inner fan ring 14 is also fixed to the side of the rotating disk 10. The inner fan ring 14 is coaxially arranged inside the outer fan ring 11. A number of inner fan blades 15 are evenly spaced outside the inner fan ring 14. The present invention further optimizes the distribution of damping force by adding coaxial inner fan ring 14 and inner fan blades 15 to the rotating disk 10. The staggered arrangement of inner and outer fan blades 12 forms a multi-stage hydraulic shear layer, enhancing the damping effect.

[0038] In this embodiment, the rotation reset device 9 includes a spiral coil spring 16, the outer end of which is fixedly connected to the proximal shell surface 6. The inner end of the coil spring 16 integrally forms a slide 17, which extends radially along the output shaft 13. The outer surface of the output shaft 13 is provided with a slide groove 18 that slidably cooperates with the slide 17, allowing relative axial displacement between the output shaft 13 and the housing. The rotating disk 10 is axially spaced from the proximal shell surface 6 and the distal shell surface 8. The end surfaces of the two sets of inner fan rings 14 on both sides of the rotating disk 10 are each provided with a first rotation groove 19. First rotating rings 20 are rotatably mounted in the first rotation groove 19. The two sets of first rotating rings 20 are respectively connected to the distal shell surface 8 and the proximal shell surface 6 via first support springs 21. By providing the first support springs 21, the two first support springs 21 can ensure the initial relative axial position between the output shaft 13 and the housing. The rotational cooperation between the first rotating ring 20 and the first rotating groove 19 can also reduce the interference between the inner sector ring 14 and the housing during rotation.

[0039] In this embodiment, a second rotation groove 22 is defined within the central aperture of the proximal shell surface 6. A second rotation ring 23 is rotationally and sealably mounted within the second rotation groove 22. A spacer sleeve 24 is connected between the second rotation ring 23 and the output shaft 13. The large and small ends of the spacer sleeve 24 are sealed to the second rotation ring 23 and the output shaft 13, respectively. The spacer sleeve 24 is primarily used to seal the gap between the central aperture of the proximal shell surface 6 and the output shaft 13 to prevent buffer oil from overflowing. The right end sealing portion of the spacer sleeve 24 is located at least to the right of the slide groove 18. This arrangement allows the slide groove 18 to be concealed within the spacer sleeve 24, thereby resolving the sealing issue.

[0040] In this embodiment, end blades 25 are provided on the inner sides of the proximal shell surface 6 and the distal shell surface 8, and the end blades 25 are radially located between the outer blades 12 and the inner blades 15. The end blades 25 can be used in conjunction with the outer blades 12 and the inner blades 15 to enhance the damping effect.

[0041] In this embodiment, a number of sliding tubes 26 are evenly spaced on the outside of the outer ring 11. A bracket 27 is slidably mounted within the sliding tube 26. A rotating shaft 28 is fixedly connected to the outer end of the bracket 27. A roller 29 is rotatably mounted on the rotating shaft 28. A tension spring 30 is connected between the bracket 27 and the sliding tube 26. A radial damping assembly is mounted on the circular housing 7, corresponding to the roller 29. The tension spring 30 provides elastic tension to the bracket 27, separating the roller 29 from the radial damping assembly. When the rotational speed of the outer ring 11 reaches a threshold, the bracket 27, under the action of centrifugal force, stretches the tension spring 30 and displaces it radially outward. At this point, the roller 29 contacts the radial damping assembly, achieving further damping.

[0042] In this embodiment, the radial damping assembly includes an annular shell 31, the cross-section of the annular shell 31 is U-shaped and its opening faces the circular shell 7. The annular shell 31 is fixed to the outside of the circular shell 7 and is surrounded by the circular shell 7 to form a second liquid-containing chamber 32. The radial damping assembly also includes a guide column 33, a limit plate 34, a second support spring 35 and a spring plate 36. The guide column 33 is radially slidingly sealed and installed in a guide hole 37 opened on the circular shell 7. The outer end of the guide column 33 extends into the second liquid-containing chamber 32 and is connected to the limit plate 34. A second support spring 35 is connected between the limit plate 34 and the annular shell 31, and a spring plate 36 is installed on the outside of the guide column 33.

[0043] The second support spring 35 provides elastic support for the guide post 33, allowing it to extend out of the guide hole 37 and contact the roller 29. When the roller 29 contacts the guide post 33, it can drive the guide post 33 to move outward. The guide post 33 also drives the spring plate 36, which stirs the buffer oil in the second liquid chamber 32. The buffer oil provides a damping force for the guide post 33, thereby improving the damping effect of the entire device and better cushioning the high rotation of the output shaft 13.

[0044] In this embodiment, the bracket 27 has two legs 38, and the two legs 38 correspond to two sliding tubes 26 respectively. The two sliding tubes 26 are arranged on both sides of the rotating disk 10. By setting two legs 38 at the same time, the movement of the bracket 27 can be made more stable.

[0045] In this embodiment, the sliding tube 26 is threadedly connected to the outer fan ring 11. By rotating the sliding tube 26, the length of the sliding tube 26 extending outward can be adjusted. By rotating the sliding tube 26 to change the initial contact position of the roller 29, the system damping characteristics can be adjusted in real time.

[0046] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A medical digital X-ray imaging system comprising a radiation generating device, a telescopic arm connected to the radiation generating device, a column for supporting the telescopic arm, and an image receiving system connected to the radiation generating device, characterized in that: A servo is installed at the output end of the telescopic arm, and the output shaft of the servo is connected to the ray generating device through a rotary hydraulic damper; the rotary hydraulic damper includes a proximal shell, a circular shell, a distal shell, a rotation reset device, a rotating disk, an outer fan ring, and an outer fan blade. The proximal shell is fixedly connected to the ray generating device, and the proximal shell is simultaneously connected to the distal shell parallel to it through the circular shell. The proximal shell, the circular shell, and the distal shell are combined to form a first liquid-containing cavity, and the output shaft is simultaneously rotated and sealed with the center holes of the proximal shell and the distal shell. The rotary reset device is used to connect the output shaft with the proximal shell surface. The output shaft is also fixedly connected with a rotating disk, which is rotatably installed in the first liquid chamber. An outer fan ring is fixed on the side of the rotating disk, and a plurality of outer fan blades are evenly distributed on the outer side of the outer fan ring; an inner fan ring is also fixed on the side of the rotating disk, and the inner fan ring is coaxially arranged on the inner side of the outer fan ring, and a plurality of inner fan blades are evenly distributed on the outer side of the inner fan ring; the rotary reset device includes a spiral coil spring, the outer end of the coil spring is fixedly connected to the proximal shell surface, and the inner end of the coil spring is integrally formed The outer surface of the output shaft is provided with a slide groove which is slidably matched with the slide; the rotating disk is axially spaced from the proximal shell surface and the distal shell surface, and the end surfaces of the two groups of inner fan rings on both sides of the rotating disk are provided with a first rotating groove, and a first rotating ring is rotatably installed in the first rotating groove. The two groups of first rotating rings are respectively connected to the distal shell surface and the proximal shell surface through a first supporting spring; a second rotating groove is provided on the inner side of the center hole of the proximal shell surface, and a second rotating ring is rotatably installed in the second rotating groove. The second rotating ring is connected to the output shaft. It is connected to an isolation sleeve, and the large end and small end of the isolation sleeve are sealed with the second rotating ring and the output shaft respectively; the inner sides of the proximal shell surface and the distal shell surface are provided with end face fan blades, and the end face fan blades are radially located between the outer fan blades and the inner fan blades; a number of sliding tubes are evenly spaced on the outside of the outer fan ring, and a bracket is slidably installed in the sliding tube, the outer end of the bracket is fixedly connected to the rotating shaft, and a roller is rotatably installed on the rotating shaft, and a tension spring is connected between the bracket and the sliding tube; a radial damping assembly is installed on the circular shell, and the radial damping assembly corresponds to the roller.

2. A medical digital X-ray imaging system according to claim 1, characterized in that: The radial damping assembly includes an annular shell, the cross-section of the annular shell is U-shaped and its opening faces the circular shell. The annular shell is fixed to the outside of the circular shell and forms a second liquid-containing chamber between the annular shell and the circular shell. The radial damping assembly also includes a guide column, a limit plate, a second support spring and a spring plate. The guide column is radially slidingly sealed and installed in a guide hole opened on the circular shell. The outer end of the guide column extends into the second liquid-containing chamber and is connected to the limit plate. A second support spring is connected between the limit plate and the annular shell, and a spring plate is installed on the outside of the guide column.

3. The medical digital X-ray imaging system according to claim 1, characterized in that: The bracket has two supporting legs, and the two supporting legs correspond to two sliding tubes respectively. The two sliding tubes are arranged on both sides of the rotating disk.

4. The medical digital X-ray imaging system according to claim 3, characterized in that: The sliding tube is threadedly connected to the outer fan ring, and the length of the sliding tube extending outward can be adjusted by rotating the sliding tube.

Images