A new medical X-ray tube

Abstract

This utility model relates to a novel medical X-ray tube, comprising a vacuum tube and a protective tube. The vacuum tube consists of a thicker central section and thinner sections on the left and right sides. A fixing ring is fixedly sleeved on the outer side of one end of each thin section. Several fixing blocks are fixedly arranged in a circular pattern on the side of the fixing ring away from the thicker section. Blind holes are opened on the side of each fixing block away from the axis of the vacuum tube. Several semi-circular support sleeves are fixedly connected to the bottom inner side of the protective tube. Both ends are open, and several square frame plates are fixedly installed on the outer sides of both ends. A screw rod is rotatably connected between the upper and lower frames of the frame plate. The top of the screw rod passes through the upper frame of the frame plate and is fixedly connected to a rotating handle. A lifting plate is threaded onto the screw rod. One end of the lifting plate abuts against the inner side of the frame plate, and the other end extends out of the frame plate. An insertion rod is fixedly installed on the side of the lifting plate closest to the protective tube. A first through hole is opened on the protective tube corresponding to the insertion rod. This utility model ensures a stable connection and allows for convenient disassembly and replacement, making it more practical.

Description

Technical Field

[0001] This utility model belongs to the field of X-ray tube technology, specifically relating to a novel medical X-ray tube. Background Technology

[0002] An X-ray tube is a vacuum diode that operates at high voltage. It contains two electrodes: a filament that emits electrons, serving as the cathode, and a target that receives electron bombardment, serving as the anode. Both electrodes are sealed in a high-vacuum glass or ceramic tube and are used in medicine for diagnosis and treatment.

[0003] Patent CN212750800U discloses an X-ray tube with a lead sleeve. This tube, through the combined action of the support and protective layer, reduces the strength required for the support when using a separate shielding layer, and also reduces the weight of the shielding layer, lowering manufacturing costs. Simultaneously, the shielding layer absorbs excess X-rays, ensuring the directional nature of the X-ray output. The shielding layer absorbs X-rays other than those from the through-hole, transforming the originally non-directional X-ray output into X-rays output only from the through-hole, improving the adaptability of the X-ray tube. However, in the aforementioned patent, the support uses adhesive or a raised strip made of hard rubber. The adhesive prevents the X-ray tube from being easily separated from the protective layer, hindering convenient replacement when either the X-ray tube or the protective layer malfunctions. Furthermore, the locking mechanism of the raised strip is not secure, allowing the X-ray tube to still move axially, which requires improvement. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a new type of medical X-ray tube that can ensure a stable connection and enable convenient disassembly and replacement, so as to solve the above problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel medical X-ray tube, comprising a vacuum tube and a protective tube, wherein the vacuum tube consists of a thick tube section in the middle and thin tube sections on the left and right sides. A fixing ring is fixedly sleeved on the outer side of the thin tube section away from the thick tube section. Several fixing blocks are fixedly arranged in a circular interval on the side of the fixing ring away from the thick tube section. A blind hole is opened on the side of the fixing block away from the axis of the vacuum tube. Several semi-circular support sleeves are fixedly sleeved on the inner bottom of the protective tube, and several square frame plates are fixedly arranged in a circular interval on the outer sides of both the left and right ends, which are open. A screw rod is rotatably connected between the upper and lower frames of the frame plate, and the top end of the screw rod passes through the upper frame of the frame plate and is fixedly connected. The device has a rotating handle, and a lifting plate is threaded onto the lead screw. One end of the lifting plate abuts against the inner side of the frame plate, and the other end extends out of the frame plate. A rod is fixed on the side of the lifting plate near the protective tube. A first through hole is opened on the protective tube corresponding to the rod. The vacuum tube is sleeved inside the protective tube, and its thick section abuts against the support sleeve. Its blind hole corresponds one-to-one with the first through hole. Sealing plates are fitted onto the inner sides of both ends of the protective tube. The end of the thin section and the fixing ring abut against the sealing plate on the same side. A fixing groove is opened on the sealing plate corresponding to the fixing block. A second through hole is opened at the position corresponding to the first through hole of the fixing groove, which connects to the outer circumference of the sealing plate. The fixing block is inserted into the corresponding fixing groove. The rod passes through the corresponding first through hole and second through hole and is inserted into the corresponding blind hole.

[0006] Preferably, an anode is coaxially fixed in one of the thin tube segments, and a cathode is coaxially fixed in another thin tube segment. One end of the anode extends into the thick tube segment and is provided with a target material at that end, while the other end extends out of the corresponding thin tube segment. One end of the cathode extends into the thick tube segment and is provided with a filament at that end, while a focusing hood is fitted on the outside of that end. A beryllium window is installed on the top of the corresponding thick tube segment between the target material and the filament. A radiation tube is connected to the top of the protective tube corresponding to the beryllium window, and the radiation tube abuts against the frame of the beryllium window.

[0007] Preferably, the sealing plate has a through groove in the center, and one end of the anode and cathode both extend out of the protective tube through the corresponding through groove.

[0008] Preferably, a handle is fixed on the outer surface of the sealing disc.

[0009] Preferably, both the inner and outer walls of the protective tube are provided with a shielding coating.

[0010] Preferably, the shielding coating is a lead coating or a boron-containing polyethylene coating.

[0011] The beneficial effects of this utility model are as follows: When assembling the X-ray tube, the vacuum tube can be first inserted into the protective tube, and the thicker section of the vacuum tube can be abutted against the support sleeve, aligning the blind hole at one end with the first through hole on the corresponding side. Then, the sealing plate is inserted into the protective tube at that end. At this time, the other end of the vacuum tube can be manually held to prevent axial movement of the vacuum tube until the sealing plate is inserted into place, so that the fixing block on the fixing ring at the end of the sealing plate can be inserted into the corresponding fixing groove and the second through hole can be aligned with the corresponding first through hole and blind hole. Next, the corresponding screw is rotated by the handle on the side of the sealing plate, driving the corresponding lifting plate and the insertion rod to move towards the protective tube until the insertion rod passes through the corresponding first through hole and second through hole and is inserted into the corresponding blind hole, thus fixing the fixing block and the sealing plate in place, and completing the effective fixing and installation of one end of the vacuum tube. Afterwards, the other sealing plate can be installed and inserted into place as described above. The operation is convenient and the fixing is reliable, without affecting subsequent use. When the vacuum tube or protective tube malfunctions and needs to be disassembled, simply reverse the corresponding screw to move the lifting plate and insertion rod away from the protective tube until the insertion rod exits the protective tube. This releases the connection between the fixing block and the sealing plate. Then, remove the sealing plate and pull out the vacuum tube. This ensures a secure connection while allowing for convenient disassembly and replacement of the vacuum tube and protective tube, making it more flexible and practical. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the main structure of the vacuum tube of this utility model;

[0015] Figure 4 This is a schematic diagram of the left-side structure of the vacuum tube of this utility model;

[0016] Figure 5 This is a schematic diagram of the main structure of the protective tube of this utility model;

[0017] Figure 6 This is a schematic diagram of the left-side structure of the protective tube of this utility model;

[0018] Figure 7 This is a schematic diagram of the main structure of the protective tube of this utility model;

[0019] Figure 8 This is a schematic diagram of the protective tube of this utility model from the right side.

[0020] The following numbers are used in the diagram: 1 is the vacuum tube, 2 is the protective tube, 3 is the thick tube section, 4 is the thin tube section, 5 is the fixing ring, 6 is the fixing block, 7 is the blind hole, 8 is the support sleeve, 9 is the frame plate, 10 is the lead screw, 11 is the rotating handle, 12 is the lifting plate, 13 is the insertion rod, 14 is the first through hole, 15 is the sealing plate, 16 is the fixing groove, 17 is the second through hole, 18 is the anode, 19 is the cathode, 20 is the target material, 21 is the filament, 22 is the focusing hood, 23 is the beryllium window, 24 is the radiation tube, 25 is the through groove, 26 is the handle, and 27 is the shielding coating. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] like Figures 1 to 8 As shown, a novel medical X-ray tube includes a vacuum tube 1 and a protective tube 2. The vacuum tube 1 consists of a thick tube section 3 in the middle and thin tube sections 4 on the left and right sides. A fixing ring 5 is fixedly sleeved on the outer side of the thin tube section 4 away from the thick tube section 3. Several fixing blocks 6 are fixedly arranged in a circular interval on the side of the fixing ring 5 away from the thick tube section 3. A blind hole 7 is opened on the side of the fixing block 6 away from the axis of the vacuum tube 1. The inner bottom of the protective tube 2 is fixedly fitted with several semi-circular support sleeves 8 spaced apart along its axial direction. Both the left and right ends are open, and several square frame plates 9 spaced apart in a circle are fixedly installed on the outer sides of the left and right ends. A screw rod 10 is rotatably connected between the upper and lower frames of the frame plate 9. The top end of the screw rod 10 passes through the upper frame of the frame plate 9 and is fixedly connected to a rotating handle 11. A lifting plate 12 is threaded onto the screw rod 10. One end of the lifting plate 12 abuts against the inner side of the frame plate 9, and the other end extends out of the frame plate 9. An insertion rod 13 is fixedly installed on the side of the end near the protective tube 2. A first through hole 14 is opened on the protective tube 2 corresponding to the insertion rod 13. The vacuum tube 1 is fitted inside the protective tube 2, and its thick tube section 3 abuts against the support sleeve 8. Its blind hole 7 corresponds one-to-one with the first through hole 14. The inner sides of both ends of the protective tube 2 are fitted with sealing discs 15. The end of the thin tube section 4 and the fixing ring 5 are both fitted with the sealing discs 15 on the same side. The fixing block 6 is provided with a fixing groove 16 on the sealing disc 15. The fixing groove 16 is provided with a second through hole 17 that connects to the outer circumference of the sealing disc 15 at the position corresponding to the first through hole 14. The fixing block 6 is inserted into the corresponding fixing groove 16. The insertion rod 13 passes through the corresponding first through hole 14 and the second through hole 17 and is inserted into the corresponding blind hole 7.

[0023] When assembling the X-ray tube, first insert the vacuum tube 1 into the protective tube 2, and make the thicker section 3 of the vacuum tube 1 abut against the support sleeve 8, aligning the blind hole 7 at one end with the first through hole 14 on the corresponding side. Then, insert the sealing plate 15 into the protective tube 2 at that end. At this time, manually hold down the other end of the vacuum tube 1 to prevent axial movement of the vacuum tube 1 until the sealing plate 15 is properly inserted, so that the fixing block 6 on the fixing ring 5 at the end of the sealing plate 15 can be inserted into the corresponding fixing groove 16 and the second through hole 17 can be aligned with the corresponding first through hole 14 and blind hole 7. Next, control the corresponding screw 10 to rotate by the rotating handle 11 on the side of the sealing plate 15, driving the corresponding lifting plate 12 and the insertion rod 13 towards the protective tube 2 until the insertion rod 13 passes through the corresponding first through hole 14 and second through hole 17 and is inserted into the corresponding blind hole 7, thus fixing the fixing block 6 and the sealing plate 15, and completing the effective fixing and installation of one end of the vacuum tube 1. Afterwards, install and insert the other sealing plate 15 as described above. The operation is convenient and secure, and it does not affect subsequent use. When the vacuum tube 1 malfunctions and needs to be disassembled, simply rotate the corresponding screw 10 in the reverse direction to move the lifting plate 12 and the insertion rod 13 away from the protective tube 2 until the insertion rod 13 exits the protective tube 2. This will release the connection between the fixing block 6 and the sealing plate 15. Then, remove the sealing plate 15 and pull out the vacuum tube 1. In this way, a stable connection can be ensured while allowing for convenient disassembly and replacement between the vacuum tube 1 and the protective tube 2, making it more flexible and practical.

[0024] In this embodiment, an anode 18 is coaxially fixed in one thin tube segment 4, and a cathode 19 is coaxially fixed in another thin tube segment 4. One end of the anode 18 extends into the thick tube segment 3 and is provided with a target material 20 at that end, while the other end extends out of the corresponding thin tube segment 4. One end of the cathode 19 extends into the thick tube segment 3 and is provided with a filament 21 at that end, while a focusing hood 22 is fitted on the outside of that end. A beryllium window 23 is installed on the top of the corresponding thick tube segment 3 between the target material 20 and the filament 21. A radiation tube 24 is connected to the top of the protective tube 2 corresponding to the beryllium window 23. The radiation tube 24 abuts against the frame of the beryllium window 23, so that when in use, electrons can be generated by the filament 21 on the cathode 19 through the thermionic effect, and then focused by the focusing hood 22 and bombarded onto the target material 20 of the anode 18, thereby generating X-rays that are emitted through the beryllium window 23 and the radiation tube 24. The anode 18, cathode 19, target material 20, filament 21, focusing hood 22, and beryllium window 23 can all be constructed using existing technologies.

[0025] In this embodiment, a through groove 25 is provided in the center of the sealing plate 15. One end of the anode 18 and the cathode 19 extends out of the protective tube 2 through the corresponding through groove 25 to facilitate connection with the existing external power supply circuit. The end of the anode 18 can be threaded to facilitate connection with the external cooling pipe for heat dissipation of the anode 18.

[0026] In this embodiment, a handle 26 is fixed on the outer side of the sealing plate 15 to facilitate the assembly and disassembly of the sealing plate 18.

[0027] In this embodiment, both the inner and outer walls of the protective tube 2 are provided with a shielding coating 27, forming a double shielding protection that effectively absorbs excess X-rays, ensuring the directional accuracy of the X-ray output and making it safer and more reliable. The shielding coating 27 is a conventional lead coating or a boron-containing polyethylene coating, and the inner and outer shielding coatings 27 can be the same or different to ensure the shielding effect.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel medical X-ray tube, comprising a vacuum tube and a protective tube, characterized in that, The vacuum tube consists of a thick section in the middle and thin sections on the left and right sides. A fixing ring is fixedly sleeved on the outer side of the thin section away from the thick section. Several circumferentially spaced fixing blocks are fixed on the side of the fixing ring away from the thick section. Blind holes are opened on the side of each fixing block away from the vacuum tube axis. Several semi-circular support sleeves are fixedly sleeved on the inner bottom of the protective tube, spaced along its axial direction. Both ends are open, and several circumferentially spaced square frame plates are fixedly mounted on the outer sides of both ends. A lead screw is rotatably connected between the upper and lower frames of the frame plates. The top of the lead screw passes through the upper frame of the frame plate and is fixedly connected to a rotating handle. A lifting plate is threaded onto the lead screw. One end of the plate abuts against the inner side of the frame plate, and the other end extends out of the frame plate. A rod is fixed on the side of the plate near the protective tube. A first through hole is opened on the protective tube corresponding to the rod. The vacuum tube is sleeved inside the protective tube, and its thick section abuts against the support sleeve. Its blind hole corresponds one-to-one with the first through hole. Sealing plates are fitted on the inner sides of both ends of the protective tube. The end of the thin section and the fixing ring abut against the sealing plate on the same side. A fixing groove is opened on the sealing plate corresponding to the fixing block. A second through hole is opened at the position of the fixing groove corresponding to the first through hole, which connects to the outer circumference of the sealing plate. The fixing block is inserted into the corresponding fixing groove. The rod passes through the corresponding first through hole and second through hole and is inserted into the corresponding blind hole.

2. The novel medical X-ray tube according to claim 1, characterized in that, An anode is coaxially fixed in one thin tube segment, and a cathode is coaxially fixed in another thin tube segment. One end of the anode extends into the thick tube segment and is provided with a target material at that end, while the other end extends out of the corresponding thin tube segment. One end of the cathode extends into the thick tube segment and is provided with a filament at that end, while a focusing hood is fitted on the outside of that end. A beryllium window is installed on the top of the corresponding thick tube segment between the target material and the filament. A radiation tube is connected to the top of the protective tube corresponding to the beryllium window, and the radiation tube abuts against the frame of the beryllium window.

3. The novel medical X-ray tube according to claim 2, characterized in that, The sealing plate has a through groove in the center, and one end of the anode and cathode extends out of the protective tube through the corresponding through groove.

4. The novel medical X-ray tube according to claim 1, characterized in that, A handle is fixed to the outer surface of the sealing plate.

5. The novel medical X-ray tube according to claim 1, characterized in that, The inner and outer walls of the protective tube are both coated with a shielding coating.

6. The novel medical X-ray tube according to claim 5, characterized in that, The shielding coating is a lead coating or a boron-containing polyethylene coating.

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