Puncture needle and automatic particle implantation system applying puncture needle

Abstract

The invention discloses a puncture needle and an automatic particle implantation system applying the puncture needle. The automatic particle implantation system comprises a controller, an angle adjusting device and a puncture needle assembly, wherein the angle adjusting device is electrically connected with the controller, the puncture needle assembly is installed on the angle adjusting device, and the puncture needle assembly comprises a puncture needle; the controller is used for controlling the angle adjusting device to adjust the puncture angle of the puncture needle assembly and further used for controlling the particle gun to penetrate through a diaphragm of the puncture needle to enter the puncture needle to implant radioactive particles, and after the particle gun retreats, the diaphragm automatically blocks the wide-diameter section of the needle base so that the radioactive particles can be implanted into the particle gun again. Through precise angle adjustment and the special structural design of the puncture needle, precise positioning of the puncture needle assembly is achieved, and the operation efficiency and safety are remarkably improved.

Description

Technical Field

[0001] The invention relates to a puncture needle and also to an automated particle implantation system using the puncture needle, belonging to the technical field of medical devices. Background Art

[0002] Radioactive particle implantation therapy is an advanced medical technology that is widely used in the treatment of advanced tumors such as lung cancer, prostate cancer, and liver cancer. This technology implants a radioactive source (the core of which is a radioactive particle) into the tumor and uses its radioactivity to destroy tumor cells. At present, the radioactive particles commonly used in clinical practice are iodine-125, which has a short half-life (59.6 days) and a limited radiation penetration distance (1.7 cm). It can effectively kill tumor cells without damaging surrounding normal tissues, thereby improving local control rate and long-term treatment rate.

[0003] However, during radioactive particle implantation therapy, existing puncture needles have the problem of negative pressure blood return. This phenomenon occurs during the puncture process. When a channel is formed between the human body, the puncture needle and the outside world, negative pressure causes blood to flow back, which may contaminate the implanter and have the risk of pushing the particles out of the needle tube. This not only increases the complexity of the operation, but also poses a challenge to the safety and effectiveness of the operation.

[0004] In order to overcome these difficulties and improve the accuracy and safety of surgery, a new type of surgical device needs to be developed. This device should be able to accurately puncture the lesion area according to the planned path under the guidance of CT, reducing dependence on the doctor's experience and operation. The traditional puncture surgery process is relatively cumbersome, including multiple steps such as imaging scanning, grid layout, and pre-puncture. Doctors need to frequently go in and out of the operating room, which undoubtedly increases the physical burden on doctors and patients. Therefore, a new surgical device that can simplify the surgical process and improve efficiency is crucial to improving treatment outcomes and reducing the burden on doctors and patients. Summary of the invention

[0005] The primary technical problem to be solved by the present invention is to provide a puncture needle.

[0006] Another technical problem to be solved by the present invention is to provide an automated particle implantation system using the puncture needle.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] According to a first aspect of an embodiment of the present invention, there is provided a puncture needle, comprising:

[0009] The needle seat has a hollow inner cavity, wherein the hollow inner cavity includes a wide diameter section, a transition section and a narrow diameter section connected in sequence;

[0010] A needle, disposed on the needle seat and inserted into the narrow diameter section of the hollow inner cavity;

[0011] A diaphragm mounting groove is provided on the inner wall of the wide diameter section, and a diaphragm is provided in the diaphragm mounting groove for preventing the particles to be loaded from escaping from the puncture needle; and a strip-shaped scratch for delivering particles is provided on the diaphragm.

[0012] Preferably, a limiting jaw is provided at one end of the transition section close to the narrow diameter section, and the end face diameter of the limiting jaw at one end away from the needle head is smaller than the diameter of the particles to be loaded, so as to prevent the particles to be loaded from escaping from the puncture needle.

[0013] According to a second aspect of an embodiment of the present invention, there is provided an automated particle implantation system, comprising a controller, an angle adjustment device, and a puncture needle assembly;

[0014] The angle adjustment device is electrically connected to the controller, the puncture needle assembly is mounted on the angle adjustment device, and the puncture needle assembly includes the above-mentioned puncture needle;

[0015] Among them, the controller is used to control the angle adjustment device to adjust the puncture angle of the puncture needle assembly. The controller is also used to control the particle gun to pass through the diaphragm into the puncture needle to implant radioactive particles, and after the particle gun is withdrawn, the diaphragm blocks the wide diameter section of the needle seat to wait for the particle gun to implant radioactive particles again.

[0016] Preferably, the angle adjustment device further comprises:

[0017] An angle plate, the surface of which is provided with an annular guide rail around the central axis of the angle plate, and an arc-shaped slider is slidably matched on the annular guide rail;

[0018] A linear slide rail is arranged on the arc-shaped slider, and the length direction of the linear slide rail passes through the central axis of the angle plate, and the linear slide rail is slidably matched with the linear slide rail;

[0019] A first rotating portion is rotatably mounted on the linear slide block around a first direction, wherein the first direction is perpendicular to a preset plane formed by a length direction of the linear slide rail and a central axis of the angle plate;

[0020] A second rotating part is rotatably mounted on the first rotating part around a second direction, the second direction is always perpendicular to the first direction and is located in the preset plane; the puncture needle assembly is arranged on the second rotating part and is used for implanting radioactive particles;

[0021] Among them, the sliding cooperation between the linear slide rail and the linear slider is used to adjust the puncture position of the puncture needle assembly; the sliding cooperation between the annular guide rail and the arc-shaped slider is used to adjust the first puncture angle of the puncture needle assembly; the rotational cooperation between the first rotating part and the linear slider is used to adjust the second puncture angle of the puncture needle assembly; the rotational cooperation between the second rotating part and the first rotating part is used to adjust the third puncture angle of the puncture needle assembly; the puncture position, the first puncture angle, the second puncture angle and the third puncture angle of the puncture needle assembly jointly determine the positioning accuracy of the puncture needle assembly.

[0022] Preferably, the first rotating part further comprises:

[0023] A fixed plate, fixed on the linear slider, and the length direction of the fixed plate is parallel to the central axis of the angle plate;

[0024] A movable plate is rotatably connected to the fixed plate around the first direction, and a plurality of connecting holes are formed on the movable plate along the length direction;

[0025] An oblique brace, wherein a first end of the oblique brace is fixedly connected to the fixed plate, and a second end of the oblique brace is connected to any of the connecting holes, so that the angle between the fixed plate and the movable plate can be adjusted by replacing different connecting holes.

[0026] Preferably, the second rotating part further comprises:

[0027] An angle plate, arranged at one end of the movable plate away from the fixed plate, and the angle plate and the movable plate are perpendicular to each other;

[0028] The rotation fixing part is rotatably mounted on the angle plate around the second direction and is used for connecting with the puncture needle assembly.

[0029] Preferably, the angle disk has a first scale for indicating a first puncture angle of the puncture needle assembly;

[0030] The connecting hole is provided with a second scale for indicating a second puncture angle of the puncture needle assembly;

[0031] The angle plate has a third scale for indicating a third puncture angle of the puncture needle assembly.

[0032] Preferably, the first rotating part further comprises:

[0033] A fixed plate, fixed on the linear slider, and the length direction of the fixed plate is parallel to the central axis of the angle plate;

[0034] a movable plate, rotatably connected to the fixed plate about the first direction;

[0035] A telescopic diagonal brace, a first end of which is connected to the fixed plate, and a second end of which is connected to the movable plate;

[0036] The telescopic diagonal brace can be telescopically moved along its length direction to drive the movable plate to rotate relative to the fixed plate around the first direction.

[0037] Preferably, the puncture needle assembly further comprises:

[0038] The needle advancing and withdrawing module is installed on the rotating fixed part and rotates with the rotation of the rotating fixed part, and is used for needle advancing or withdrawing;

[0039] The clamping part is arranged on the needle advancing and retracting module and is used for clamping and fixing the puncture needle.

[0040] Preferably, the automated particle implantation system further comprises a bracket, which is supported at the bottom of the angle plate and erected above the human body.

[0041] Compared with the prior art, the puncture needle and the automated particle implantation system using the puncture needle provided by the present invention realize precise positioning of the puncture needle assembly through precise angle adjustment and the special structural design of the puncture needle, significantly improving the efficiency and safety of the operation. The system automatically adjusts the puncture angle through a controller, and uses the dual mechanism of a diaphragm and a limiting clamp to effectively prevent the particles from being ejected under negative pressure, reducing the doctor's operating burden while ensuring the stability of the surgical process. In addition, the present invention is not limited to radioactive particle implantation therapy, but also has a wide range of applicability, and can serve in a variety of puncture technology fields such as puncture biopsy, microwave ablation, radiofrequency ablation, and cryoablation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic cross-sectional view of a puncture needle provided in the first embodiment of the present invention;

[0043] Figure 2 This is a schematic structural diagram of a diaphragm in the first embodiment of the present invention;

[0044] Figure 3A A schematic diagram of the overall structure of an automated particle implantation system provided in accordance with a second embodiment of the present invention;

[0045] Figure 3 This is a structural schematic diagram of an automated particle implantation system in which a controller and a particle gun are omitted in a second embodiment of the present invention;

[0046] Figure 4 for Figure 3 a top view of the structure shown;

[0047] Figure 5 for Figure 3 a side view of the structure shown;

[0048] Figure 6 A schematic diagram of adjusting the puncture needle assembly to a third puncture angle using the second rotating portion;

[0049] Figure 7 A schematic structural diagram of another automated particle implantation system provided in accordance with a second embodiment of the present invention. DETAILED DESCRIPTION

[0050] The technical content of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] The embodiment of the present invention provides a puncture needle and an automated particle implantation system using the puncture needle, which realizes multi-angle adjustment of the puncture needle assembly through sliding or rotating cooperation between various components, thereby improving the positioning accuracy of the puncture needle assembly. In addition, by making a special structural setting for the puncture needle, the particles to be loaded are prevented from being separated from the puncture needle, which can effectively prevent the particles from being ejected during the particle implantation process, thereby increasing the safety and reliability of the operation.

[0052] First embodiment

[0053] like Figure 1 and Figure 2 As shown, a puncture needle 83 provided in the first embodiment of the present invention comprises a needle seat 831 and a needle head 832. The needle seat 831 is made of medical PC material. The needle seat 831 has a hollow inner cavity 830, and the hollow inner cavity 830 comprises a wide diameter section 801, a transition section 802 and a narrow diameter section 803 connected in sequence. The needle head 832 is made of stainless steel material, disposed on the needle seat 831, and penetrated into the narrow diameter section 803 of the hollow inner cavity.

[0054] Specifically, in this embodiment, the end of the transition section 802 close to the narrow diameter section 803 (ie: Figure 1 A limiting clamp 833 is provided at the right end of the middle narrow diameter section 803. The end face diameter of the limiting clamp 833 away from the needle 832 is smaller than the diameter of the particle 10 to be loaded, so as to prevent the particle 10 to be loaded from escaping from the puncture needle, thereby increasing the safety and reliability of the operation. Generally, the diameter of the particle 10 to be loaded is about 0.8 mm. Therefore, it is only necessary to ensure that the end face diameter of the limiting clamp 833 away from the needle 832 is less than 0.8 mm. In other application scenarios, the end face diameter of the limiting clamp 833 away from the needle 832 can be adjusted according to the different particles to be loaded.

[0055] In addition, in the above embodiment, preferably, a diaphragm mounting groove 8011 is provided on the inner wall of the wide diameter section 801, a diaphragm 834 is provided in the diaphragm mounting groove 801, and a strip-shaped scratch 8341 for delivering particles is provided on the diaphragm 834. It can be understood that the diaphragm 834 can further prevent the particles to be loaded from escaping from the puncture needle, thereby cooperating with the limiting clamp 833 to play a double protection role, which can effectively prevent the negative pressure from ejecting the particles, and at the same time, the needle core of the particle gun 20 can smoothly enter and exit to achieve particle delivery.

[0056] Second embodiment

[0057] like Figure 3A As shown, an automated particle implantation system provided by the second embodiment of the present invention includes a controller 100, an angle adjustment device 200 and a puncture needle assembly 8. The angle adjustment device 200 is electrically connected to the controller 100, the puncture needle assembly 8 is mounted on the angle adjustment device 200, and the puncture needle assembly 8 includes the puncture needle 83 in the first embodiment described above. Specifically, the controller 100 is used to control the angle adjustment device 200 to adjust the puncture angle of the puncture needle assembly 8, and the controller 100 is also used to control the particle gun 20 to pass through the diaphragm 834 into the puncture needle to implant radioactive particles. Moreover, when the particle gun 20 is withdrawn, the diaphragm 834 automatically blocks the wide diameter section 801 of the needle seat 821 (without the need for the doctor to block the open end of the needle seat 831 with his fingers), waiting for the particle gun 20 to implant radioactive particles again, thereby realizing an automated particle implantation process.

[0058] In this embodiment, the controller 100 may be implemented by a PLC logic controller or a single chip microcomputer, etc., which will not be elaborated in detail here.

[0059] like Figure 3 As shown, in this embodiment, the angle adjustment device 200 includes an angle disc 1, an annular guide rail 2, an arc-shaped slider 3, a linear slide rail 4, a linear slide rail 5, a first rotating part 6, and a second rotating part 7. Among them, the surface of the angle disc 1 is installed with a slidingly matched annular guide rail 2 and an arc-shaped slider 3, which are used to adjust the first puncture angle of the puncture needle assembly 8. The arc-shaped slider 3 is installed with a slidingly matched linear slide rail 4 and a linear slider 5, which are used to adjust the puncture position of the puncture needle assembly 8. The first rotating part 6 is rotatably mounted on the linear slider 5, which is used to adjust the second puncture angle of the puncture needle assembly 8. The second rotating part 7 is rotatably mounted on the first rotating part 6, which is used to adjust the third puncture angle of the puncture needle assembly 8. Therefore, by adjusting the puncture position, the first puncture angle, the second puncture angle, and the third puncture angle of the puncture needle assembly 8, the precise positioning of the puncture needle assembly 8 is achieved.

[0060] Specifically, in this embodiment, the angle disc 1 is an annular plate (not specifically limited to this shape, and the specific shape structure can be adjusted as needed in other embodiments). The surface of the angle disc 1 (i.e., XY plane) is provided with an annular guide rail 2 around the central axis of the angle disc 1 (parallel to the Z direction), and an arc-shaped slider 3 is slidably matched on the annular guide rail 2, so as to adjust the angle of the arc-shaped slider 3 on the annular guide rail 2. Figure 4 As shown, in this embodiment, since the puncture needle assembly 8 is connected to the arc-shaped slider 3 through multiple components, the puncture needle assembly 8 can be adjusted to a first puncture angle within the plane of the angle disk 1 (such as Figure 4 (indicated by the curved double-headed arrow in the middle).

[0061] like Figure 3 As shown, in this embodiment, the linear guide rail 4 is arranged on the arc-shaped slider 3, and the length direction of the linear guide rail 4 passes through the central axis of the angle plate 1 (that is, the length direction of the linear guide rail 4 is the radial direction of the angle plate 1). Correspondingly, the linear guide rail 4 is slidably matched with the linear slider 5, as shown in FIG. Figure 4 As shown, the linear slider 5 can reciprocate along the linear slide rail 4, thereby adjusting the position of the puncture needle assembly 8 in the radial direction of the angle disc 1 (such as Figure 4 The puncture position can be adjusted as shown in the straight double-headed arrow in the middle.

[0062] like Figure 3 As shown, in this embodiment, the first rotating portion 6 is rotatably mounted on the linear slider 5 around a first direction, and the first direction is perpendicular to a preset plane formed by the length direction of the linear slide 4 and the central axis of the angle plate 1. It can be understood that since the length direction of the linear slide 4 will change as the arc-shaped slider 3 slides on the annular guide rail 2, the angle between the first direction and the preset plane will also change accordingly, but the preset plane will always be perpendicular to the surface of the angle plate 1 and pass through the central axis of the angle plate 1. Accordingly, the first direction will always be perpendicular to the preset plane. For example: Figure 3 When the length direction of the linear guide rail 4 is parallel to the Y direction, the preset plane is parallel to the YZ plane. As the angle of the linear guide rail 4 changes continuously, the preset plane and the YZ plane form an angle of 0 to 180°.

[0063] like Figure 3 and Figure 5As shown, in the present embodiment, the first rotating part 6 includes a fixed plate 61, a movable plate 62 and a diagonal brace 63. Among them, the fixed plate 61 is a vertical plate, which is fixed on the linear slider 5, and the length direction of the fixed plate 61 is parallel to the central axis of the angle disk 1. The movable plate 2 is a horizontal plate, which is rotatably connected to the fixed plate 61 around a first direction, and a plurality of connecting holes 621 are provided on the movable plate 62 along its length direction. The diagonal brace 63 is obliquely arranged between the fixed plate 61 and the movable plate 62, and the first end of the diagonal brace 63 is fixedly connected to the fixed plate 61, and the second end of the diagonal brace 63 is connected to any connecting hole 621. It can be seen that when the second end of the diagonal brace 63 is connected to different connecting holes 621, the angle between the fixed plate 61 and the movable plate 62 is different, so that the movable plate 62 can be rotated and adjusted by replacing different connecting holes 621 (such as Figure 5 As shown by the arc-shaped double-directional arrow in the middle), the puncture needle assembly 8 is adjusted to a second puncture angle within the preset plane.

[0064] In addition, in another embodiment, the diagonal brace 63 of the first rotating part 6 can be set as a telescopic diagonal brace, and there is no need to open the connecting hole 621 on the movable plate 62. Specifically, the telescopic diagonal brace 63 is connected between the fixed plate 61 and the movable plate 62, and the telescopic diagonal brace 63 can be telescopically moved along its length direction, thereby driving the movable plate 62 to rotate relative to the fixed plate 61 around the first direction. It can be understood that after the diagonal brace 63 is set as a telescopic diagonal brace, the adjustable range of the movable plate 62 will be larger, and it can achieve 0-180° adjustment within the preset plane.

[0065] like Figure 3 As shown, in this embodiment, the second rotating part 7 is rotatably mounted on the first rotating part 6 around a second direction, and the second direction is always perpendicular to the first direction and is located in a preset plane. In this embodiment, the second direction is the length direction of the movable plate 62. It can be understood that as the movable plate 62 rotates relative to the fixed plate 61, the second direction will continuously adjust the angle in the preset plane, but the second direction will always be perpendicular to the first direction.

[0066] like Figure 6As shown, specifically, the second rotating part 7 includes an angle plate 71 and a rotating fixed part 72. The angle plate 71 is a semicircular plate, which is arranged at one end of the movable plate 62 away from the fixed plate 61, and the angle plate 71 and the movable plate 62 are perpendicular to each other. The rotating fixed part 72 is rotatably mounted on the angle plate 71 around the second direction, and is used to connect with the puncture needle assembly 8. In this embodiment, the rotation center of the rotating fixed part 72 is located at the center of the semicircular plate, and the rotating fixed part 72 can rotate around the center of the semicircular plate within 0 to 180 degrees and be fixed at any angle, so that the puncture needle assembly 8 is adjusted to a third puncture angle within the plane where the angle plate 71 is located. The specific structure of the rotating fixed part 72 is not detailed here, and an adaptive structure can be selected according to needs, for example: by cooperating with a positioning bolt through a rotating block, or by gear meshing, etc.

[0067] like Figure 3 and Figure 6 As shown, in this embodiment, the puncture needle assembly 8 is arranged on the rotating fixed part 72 of the second rotating part 7, and is used to implant radioactive particles. Specifically, the puncture needle assembly 8 includes a needle advance and retreat module 81, a clamping part 82 and a puncture needle 83. Among them, the needle advance and retreat module 81 is installed on the rotating fixed part 72, and rotates with the rotation of the rotating fixed part 72. It is used to manually and evenly withdraw the needle to implant radioactive particles according to the implantation dose of radioactive particles, ensure that the spacing between each implanted radioactive particle is equal, and optimize the radiation dose. In addition, the needle advance and retreat module 81 has a scale, and the depth of needle insertion or withdrawal can be observed in real time to meet the accuracy of internal radiotherapy. The clamping part 82 is arranged on the needle advance and retreat module 81, and is used to clamp and fix the puncture needle 83. The puncture needle 83 is installed on the clamping part 82, and is used to implant radioactive particles. Among them, the puncture needle 83 is the puncture needle in the first embodiment mentioned above, which will not be repeated here.

[0068] In addition, in the above embodiment, preferably, the angle disc 1 has a first scale, which is 0-360°, for indicating the first puncture angle of the puncture needle assembly 8. The connecting hole 621 has a second scale, which is 0-90°, for indicating the second puncture angle of the puncture needle assembly 8. The angle plate 62 has a third scale, which is 0-180°, for indicating the third puncture angle of the puncture needle assembly 8.

[0069] In the above embodiment, preferably, the automated particle implantation system further includes a guard plate 9, the top of which is inwardly recessed to form a recessed portion 91, and the angle plate 1 is supported on the top of the guard plate 9 and is located above the recessed portion 91. In this embodiment, the recessed portion 91 of the guard plate 9 can be used to allow the patient to lie flat on the guard plate 9, so that any part of the tumor can reach the puncture point by adjusting the puncture angle of the puncture mechanism.

[0070] like Figure 7 As shown, in the above embodiment, preferably, the automated particle implantation system also includes a bracket 30, which is supported at the bottom of the angle plate 1 and is used to be erected above the human body. It is understandable that when particle implantation is required, after the patient lies down, the bracket 30 can be directly erected above the human body and fixed. After the puncture is completed, the bracket 30 can be removed, which can adapt to different types of beds and is very convenient to use. In addition, preferably, the bracket 30 can be raised and lowered (the specific lifting structure is not specifically limited here, and can be adaptively selected according to needs), so that the height can be adaptively adjusted according to the body shape of different patients to ensure the particle puncture effect.

[0071] In addition, it can be understood that the automated particle implantation system in the embodiment of the present invention can not only be applied to the field of radioactive particle implantation therapy, but also serve various puncture technology fields such as puncture biopsy, microwave ablation, radiofrequency ablation, and cryoablation.

[0072] Compared with the prior art, the puncture needle and the automated particle implantation system using the puncture needle provided by the present invention realize accurate positioning of the puncture needle assembly through precise angle adjustment and special structural design of the puncture needle, significantly improving the efficiency and safety of the operation. The system automatically adjusts the puncture angle through a controller, and uses the dual mechanism of the diaphragm and the limiting clamp to effectively prevent the particles from being ejected under negative pressure, reducing the doctor's operating burden and ensuring the stability of the surgical process.

[0073] It should be noted that the above embodiments are only examples, and the technical solutions of the various embodiments can be combined, all within the protection scope of the present invention.

[0074] It should be understood that the terms "depth", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0075] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0076] The above is a detailed description of the puncture needle and the automated particle implantation system using the puncture needle provided by the present invention. For those skilled in the art, any obvious changes made to it without departing from the essence of the present invention will constitute an infringement of the patent right of the present invention and will bear corresponding legal responsibilities.

Claims

1. A puncture needle, characterized in that include: The needle seat has a hollow inner cavity, wherein the hollow inner cavity includes a wide diameter section, a transition section and a narrow diameter section connected in sequence; A needle, disposed on the needle seat and inserted into the narrow diameter section of the hollow inner cavity; A diaphragm mounting groove is provided on the inner wall of the wide diameter section, and a diaphragm is provided in the diaphragm mounting groove for preventing the particles to be loaded from escaping from the puncture needle; and a strip-shaped scratch for delivering particles is provided on the diaphragm.

2. The puncture needle according to claim 1, characterized in that: A limiting clamp is provided at one end of the transition section close to the narrow diameter section, and the end surface diameter of the limiting clamp at one end away from the needle head is smaller than the diameter of the particles to be loaded, so as to prevent the particles to be loaded from escaping from the puncture needle.

3. An automated particle implantation system, characterized in that It includes a controller, an angle adjustment device and a puncture needle assembly; The angle adjustment device is electrically connected to the controller, the puncture needle assembly is mounted on the angle adjustment device, and the puncture needle assembly includes the puncture needle according to claim 1 or 2; Among them, the controller is used to control the angle adjustment device to adjust the puncture angle of the puncture needle assembly. The controller is also used to control the particle gun to pass through the diaphragm into the puncture needle to implant radioactive particles, and after the particle gun is withdrawn, the diaphragm blocks the wide diameter section of the needle seat to wait for the particle gun to implant radioactive particles again.

4. The automated particle implantation system of claim 3, wherein The angle adjustment device also includes: An angle plate, the surface of which is provided with an annular guide rail around the central axis of the angle plate, and an arc-shaped slider is slidably matched on the annular guide rail; A linear slide rail is arranged on the arc-shaped slider, and the length direction of the linear slide rail passes through the central axis of the angle plate, and the linear slide rail is slidably matched with the linear slider; A first rotating portion is rotatably mounted on the linear slide block around a first direction, wherein the first direction is perpendicular to a preset plane formed by a length direction of the linear slide rail and a central axis of the angle plate; A second rotating part is rotatably mounted on the first rotating part around a second direction, the second direction is always perpendicular to the first direction and is located in the preset plane; the puncture needle assembly is arranged on the second rotating part and is used for implanting radioactive particles; Among them, the sliding cooperation between the linear slide rail and the linear slider is used to adjust the puncture position of the puncture needle assembly; the sliding cooperation between the annular guide rail and the arc-shaped slider is used to adjust the first puncture angle of the puncture needle assembly; the rotational cooperation between the first rotating part and the linear slider is used to adjust the second puncture angle of the puncture needle assembly; the rotational cooperation between the second rotating part and the first rotating part is used to adjust the third puncture angle of the puncture needle assembly; the puncture position, the first puncture angle, the second puncture angle and the third puncture angle of the puncture needle assembly jointly determine the positioning accuracy of the puncture needle assembly.

5. The automated particle implantation system of claim 4, wherein The first rotating part further includes: A fixed plate, fixed on the linear slider, and the length direction of the fixed plate is parallel to the central axis of the angle plate; A movable plate is rotatably connected to the fixed plate around the first direction, and a plurality of connecting holes are formed on the movable plate along the length direction; The diagonal brace has a first end fixedly connected to the fixed plate and a second end connected to any of the connecting holes, so that the angle between the fixed plate and the movable plate can be adjusted by replacing different connecting holes.

6. The automated particle implantation system of claim 5, wherein The second rotating part further includes: An angle plate, arranged at one end of the movable plate away from the fixed plate, and the angle plate and the movable plate are perpendicular to each other; The rotation fixing part is rotatably mounted on the angle plate around the second direction and is used for connecting with the puncture needle assembly.

7. The automated particle implantation system of claim 6, wherein: The angle disk has a first scale for indicating a first puncture angle of the puncture needle assembly; The connecting hole is provided with a second scale for indicating a second puncture angle of the puncture needle assembly; The angle plate has a third scale for indicating a third puncture angle of the puncture needle assembly.

8. The automated particle implantation system of claim 4, wherein The first rotating part further includes: A fixed plate, fixed on the linear slider, and the length direction of the fixed plate is parallel to the central axis of the angle plate; a movable plate, rotatably connected to the fixed plate about the first direction; A telescopic diagonal brace, a first end of which is connected to the fixed plate, and a second end of which is connected to the movable plate; The telescopic diagonal brace can be telescopically moved along its length direction to drive the movable plate to rotate relative to the fixed plate around the first direction.

9. The automated particle implantation system of claim 6, wherein The puncture needle assembly also includes: The needle advancing and withdrawing module is installed on the rotating fixed part and rotates with the rotation of the rotating fixed part, and is used for needle advancing or withdrawing; The clamping part is arranged on the needle advancing and retracting module and is used for clamping and fixing the puncture needle.

10. The automated particle implantation system of claim 4, wherein Also includes a stand; The bracket is supported on the bottom of the angle plate and is erected above the human body.

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