Multi-tube type 125I particle synchronous implantation device

Abstract

The invention discloses a multi-tube type 125I particle synchronous implantation device, and relates to the related field of medical equipment.The multi-tube type 125I particle synchronous implantation device comprises a supporting frame, a bent handle is arranged on one side of the supporting frame, the outer side of the supporting frame is fixed to one side of an implantation bin, and an implantation butt joint device is arranged at the bottom of the implantation bin; a threaded guide rod is further fixed to the outer side of the upper end of the supporting frame and used for clamping and limiting the 125 particle conveying bin, and a limiting mechanism is arranged on the outer side of the threaded guide rod and used for adjusting the positions of the sliding push disc and the push rod. According to the multi-tube type 125I particle synchronous implantation device, a clamping adjusting mechanism is driven by a rotating block, and a plurality of groups of clamping rods are driven to be synchronously clamped into clamping grooves of a bin body through meshing transmission of a bevel gear and a matched conical ring, so that circumferential uniform clamping is realized, and the accuracy of a particle implantation position is further improved on the basis of avoiding deviation of the bin body; and the problem of particle overlapping or uneven spacing is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a multi-tube 125I particle synchronous implantation device. Background Technology

[0002] During tumor growth, only a small portion of cells continuously proliferate. During the late stage of DNA synthesis and mitosis in the tumor's reproductive cycle, a small amount of gamma rays can inhibit or destroy the tumor cells' reproductive capacity. However, tumor cells in the quiescent phase are relatively insensitive to gamma rays. External beam radiotherapy, with its fractionated short-duration irradiation, can only have a therapeutic effect on cells in a portion of the tumor's reproductive cycle. Tumor cells in other phases can still quickly recover their reproductive capacity, and the cell doubling time is significantly shortened. Therefore, tumor cells can still grow rapidly during the interval between two irradiations, directly affecting the therapeutic effect of external beam radiotherapy. In contrast, interstitial radiotherapy with continuous irradiation is significantly more effective than external beam radiotherapy.

[0003] Currently, clinical treatment puncture presents the following problems: The needle is inserted 1 cm from the distal edge of the tumor to implant the first particle, then withdrawn 1 cm to implant the second particle, and so on, until the last particle is implanted 1 cm from the proximal edge of the tumor. The procedure is then repeated through a different channel. During this process, the position of the second particle after withdrawing the needle 1 cm is difficult to pinpoint accurately. The particle implanted in the next channel may overlap with the previous particle, leading to uneven tissue radiotherapy. This increases the difficulty of re-implantation, increases patient discomfort, and may also increase the risk of exogenous infection due to repeated procedures. To address this... The above issues can be addressed by referring to a multi-tube 125I particle synchronous implantation device disclosed in existing technology (Chinese patent application number CN201520377601.4, application date 2015-06-03). This device typically uses a 1.7 cm diameter diameter for direct damage to tumor tissue by I particles, with the source particles arranged horizontally and vertically at intervals of 1.5-2 cm. Thirdly, because the implantation depth is marked by a graduated scale, it helps overcome the shortcomings of blind implantation or damage caused by overlapping implantation, and also improves the accuracy of implantation, thereby improving the effect of tissue treatment. Further reference can be made to existing technology (application number...). The device for synchronous implantation of radioactive I-125 particles and a prosthesis disclosed in Chinese Patent CN202321808915.6 (application date: 2023-07-11) has a feed magazine that can accommodate implantation of radioactive I-125 particles at different intervals. It has a wide range of applications, strong practicality, and improves the convenience of prosthesis implantation. When installing the feed magazine, the push port is aligned with the implantation chamber to facilitate subsequent implantation of the prosthesis and radioactive I-125 particles. Pushing the push rod downwards causes it to pass through the push port and compress the prosthesis, moving it downwards along the implantation chamber, thus pushing the radioactive I-125 particles towards the bottom of the chamber. Finally, reference can be made to the prior art (Chinese patent application number CN202011448693.2, application date 2020-12-11) which discloses an iodine-125 particle implantation device. This implantation device has a locking post at one end of the particle storage tube and the particle implantation tube that are close to the tapered part, and a locking groove on the particle storage chamber that is adapted to the locking post. In practical applications, when the telescopic push rod pushes the particle storage tube into the particle storage chamber, the locking post at one end of the particle storage tube is inserted into the locking groove to fix the particle storage tube. This design is reasonable and achieves the fixation of the particle storage tube.

[0004] Although the device can implant 125 particles, it has some shortcomings in its use. For example, when installing the 125 particle delivery chamber, it is very easy for the chamber to shift due to the need for medical personnel to deliver it, which could easily lead to it falling off later.

[0005] Therefore, we propose a multi-tube 125I particle synchronous implantation device to address the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-tube 125I particle synchronous implantation device to solve the problem mentioned in the background art that the current synchronous implantation devices on the market, when installing the 125 particle delivery chamber, are prone to displacement of the 125 particle delivery chamber due to the need for medical personnel to deliver it, which in turn makes it very easy for the 125 particle delivery chamber to fall off later.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a multi-tube 125I particle synchronous implantation device, comprising a support frame, a curved handle on one side of the support frame, the outer side of the support frame being fixed to one side of the implantation chamber, and a 125 particle delivery chamber being embedded in the lower end of the implantation chamber, with an implantation docking device at the bottom of the implantation chamber; a threaded guide rod is fixed to the upper outer side of the support frame, a sliding push plate is slidably mounted on the outer side of the threaded guide rod, a push rod is fixed to the bottom of the sliding push plate, and the bottom of the push rod is slidably mounted inside a guide cylinder; the outer end of the 125 particle delivery chamber is embedded inside the guide cylinder; a rotating block is rotatably mounted on the outer side of the support frame, and the outer end of the rotating block is connected to a locking adjustment mechanism; the locking adjustment mechanism is installed inside the implantation chamber for locking and limiting the 125 particle delivery chamber; a limiting mechanism is provided on the outer side of the threaded guide rod for adjusting the position of the sliding push plate and the push rod.

[0008] Preferably, an embedding rod is provided on the outer side of the rotating block, and a through hole is provided on the outer side of the implantation chamber at an equal angle with respect to the rotating block, for the embedding rod to fix the rotating block through the through hole. A locking groove is provided at the conveying end of the 125-particle conveying chamber, and an elastic pushing rod is slidably provided on the side of the 125-particle conveying chamber away from the locking groove. The elastic pushing rod is used to push 125 particles inside the 125-particle conveying chamber.

[0009] Preferably, the limiting adjustment mechanism includes a threaded block threadedly connected to the bottom of the threaded guide rod, and a scale strip is fixed on one side of the threaded guide rod.

[0010] Preferably, the outer side of the guide tube is fixed to the inner side of the support frame, and the bottom of the guide tube is connected to the top of the implantation dock. A limiting ring is also fixed to the outer side of the implantation chamber, and the inner side of the limiting ring is nested on the outer side of the 125 particle delivery chamber.

[0011] Preferably, the locking adjustment mechanism includes a set of cams fixed at the position of the rotating block. The outer side of the cams is rotatably disposed on the inner side of the implantation chamber. A bevel gear is fixed at one end of the cam. A matching conical ring is also meshed on the outer side of the bevel gear. The top of the matching conical ring is fixed on the inner side of the bottom end of the rotating ring. The bottom of the cam corresponds to the outer side of the top of the moving ring. A guide mechanism is provided at the lower end of the moving ring. A locking rod is fixed on the side of the guide mechanism near the moving ring. The bottom of the locking rod is engaged in the interior of the locking groove.

[0012] Preferably, the outer side of the rotating ring is rotatably positioned inside the implantation chamber, and five sets of conical gears are arranged at equal angles about the center position of the mating conical ring, and the number of the locking rods is the same as the number of conical gears.

[0013] Preferably, the guiding mechanism includes a guide rod fixed to the bottom of the movable ring, the outer side of the guide rod being slidably disposed inside the fixed cylinder, and the bottom position of the fixed cylinder being fixed to the top of the implantation chamber.

[0014] Preferably, the guide mechanism is provided with an air storage mechanism inside. The air storage mechanism acts inside the limiting ring to achieve sufficient limiting treatment of the outer side of the 125 particle conveying chamber. The air storage mechanism includes a piston block fixed at the bottom of the guide rod. The bottom of the piston block is connected to the inside of the fixed cylinder through a return spring. One side of the piston block is connected to an elastic air cushion through a conveying pipe. The elastic air cushion is adhered to the inner side of the limiting ring.

[0015] Preferably, the elasticity of the elastic air cushion is less than that of the return spring, and the outer side of the elastic air cushion is attached to the outer side of the 125 particle conveying chamber, with an anti-slip pad provided on the outer side of the elastic air cushion.

[0016] Preferably, the bottom of the lever is rounded, and the lever forms a sliding structure with the inside of the implantation chamber through a moving ring.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows: This multi-tube 125I particle synchronous implantation device drives the locking and adjusting mechanism through a rotating block, and through the meshing transmission of a bevel gear and a matching bevel ring, drives multiple sets of locking rods to synchronously lock into the locking groove of the chamber, achieving uniform circumferential locking and avoiding force imbalance caused by single-point fixing; at the same time, the guiding mechanism is linked with the air storage mechanism, and the piston block compresses the gas to inflate the elastic air cushion and fit against the outside of the chamber, forming a dual fixing mode of mechanical locking and air cushion buffering limit, which not only ensures the fixing stability, but also adapts to the installation requirements of chambers of different specifications; in addition, the threaded guide rod, combined with the limiting design of the scale strip and threaded block, can accurately adjust the push rod stroke. Combined with the precise docking of the implantation docking device and the guide cylinder, it further improves the accuracy of particle implantation position and reduces the problems of particle overlap or uneven spacing, while avoiding chamber displacement. The specific details are as follows:

[0018] 1. By engaging the insert rod on the outer side of the rotating block with the equal-angle through hole of the implantation chamber, the position of the rotating block can be quickly fixed, preventing the locking and adjustment mechanism from loosening during use and ensuring the continuous stability of the chamber's fixed state; the bottom of the locking rod adopts an arc transition design, which not only facilitates quick locking into the locking groove of the chamber, but also reduces mechanical wear on the chamber and extends the service life of the device; at the same time, the anti-slip pad on the outer side of the elastic air cushion further enhances the tightness of the fit between the chamber and the limiting ring, effectively preventing the chamber from shifting even if there is slight vibration during the operation;

[0019] 2. The graduated strip on one side of the threaded guide rod clearly indicates the distance the push rod moves. Combined with the limiting effect of the threaded block, the particle implantation depth can be precisely controlled according to the tumor location and treatment needs, effectively solving the positional deviation problem caused by traditional manual needle withdrawal and ensuring the uniformity of radiotherapy dose distribution. In addition, the bevel gear and the locking rod are set in multiple groups at equal angles to ensure balanced force on the circumference of the chamber and avoid deformation of the chamber caused by excessive local pressure. The elastic parameters of the return spring and the elastic air cushion are reasonably matched to ensure that the air cushion can fully fit the chamber and can quickly return to its original position during disassembly without affecting subsequent operations. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 This is a side view of the structure of the present invention;

[0022] Figure 3 This is a rear view schematic diagram of the threaded guide rod structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the main structure of the rotating ring of the present invention;

[0024] Figure 5 For the present invention Figure 4Enlarged structural diagram at point A in the middle;

[0025] Figure 6 This is a bottom view of the rotating ring structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the main cross-sectional structure of the movable cylinder of the present invention;

[0027] Figure 8 This is a side view of the limiting ring structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the main structure of the 125-particle transport chamber of the present invention.

[0029] In the diagram: 1. Support frame; 2. Handle; 3. Implantation chamber; 4. 125 particle delivery chamber; 41. Insertion slot; 5. Elastic push rod; 6. Implantation connector; 7. Threaded guide rod; 8. Sliding push plate; 9. Push rod; 10. Scale bar; 11. Threaded block; 12. Guide cylinder; 13. Rotating block; 14. Cam; 15. Bevel gear; 16. Matching conical ring; 17. Rotating ring; 18. Moving ring; 19. Clamping rod; 20. Guide rod; 2001. Piston block; 21. Fixed cylinder; 22. Return spring; 23. Delivery pipe; 24. Limiting ring; 25. Elastic air cushion. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-9 The present invention provides the following technical solution: a multi-tube 125I particle synchronous implantation device.

[0032] Example 1: To address the issue that current synchronous implantation devices on the market, when installing the 125-particle delivery chamber, require medical personnel to deliver it, which easily leads to the chamber shifting and potentially falling off later, please refer to the attached document. Figure 1 -Appendix Figure 7 and attached Figure 9A curved handle 2 is provided on one side of the support frame 1. The outer side of the support frame 1 is fixed to one side of the implantation chamber 3, and a 125-particle delivery chamber 4 is embedded in the lower end of the implantation chamber 3. An implantation docking device 6 is provided at the bottom of the implantation chamber 3. A threaded guide rod 7 is fixed to the outer side of the upper end of the support frame 1. A sliding push plate 8 is slidably mounted on the outer side of the threaded guide rod 7. A push rod 9 is fixed at the bottom of the sliding push plate 8. The bottom of the push rod 9 is slidably mounted in the guide cylinder 12. The outer end of the 125-particle delivery chamber 4 is embedded in the guide cylinder 12. A rotating block 13 is rotatably mounted on the outer side of the support frame 1. The outer end of the rotating block 13 is connected to a locking adjustment mechanism. The locking adjustment mechanism is installed inside the implantation chamber 3 and is used for locking and limiting the 125-particle delivery chamber 4. The locking adjustment mechanism includes a set of cams 14 fixed at the position of the rotating block 13. The outer side of the cams 14 is rotatably mounted inside the implantation chamber 3. One end of the cams 14 A bevel gear 15 is fixed in position, and a matching bevel ring 16 is meshed with the outer side of the bevel gear 15. The top of the matching bevel ring 16 is fixed to the inner side of the bottom end of the rotating ring 17. The bottom position of the cam 14 corresponds to the outer side of the top of the moving ring 18. A guide mechanism is provided at the lower end of the moving ring 18. A locking rod 19 is fixed on the side of the guide mechanism near the moving ring 18. The bottom of the locking rod 19 is inserted into the inside of the locking groove 41. The outer side of the rotating ring 17 is rotatably set inside the implantation chamber 3. Five sets of bevel gears 15 are set at equal angles about the center position of the matching bevel ring 16, and the number of locking rods 19 is the same as the number of bevel gears 15. The guide mechanism includes a guide rod 20 fixed to the bottom of the moving ring 18. The outer side of the guide rod 20 is slidably set inside the fixed cylinder 21. The bottom position of the fixed cylinder 21 is fixed to the top of the implantation chamber 3. The bottom of the locking rod 19 is set with an arc transition. The locking rod 19 forms a sliding structure between the moving ring 18 and the inside of the implantation chamber 3.

[0033] First, medical staff, holding the curved handle 2, insert the 125-particle delivery chamber 4 into the lower end of the implantation chamber 3, and insert the outer end of the 125-particle delivery chamber 4 into the guide tube 12, completing the initial installation and positioning. Then, they rotate the rotating block 13 on the outer side of the support frame 1, causing the fixed cam 14 to rotate synchronously. The bevel gear 15 at one end of the cam 14 meshes with the mating conical ring 16, and because the five sets of bevel gears 15 are evenly distributed around the center of the mating conical ring 16, they can drive the rotating ring 17 to rotate smoothly within the implantation chamber 3, thus achieving synchronous action of all cams 14. When the cam 14 rotates, it presses against the lower moving ring 18, causing the moving ring 18 to move vertically along the guide mechanism. As the moving ring 18 moves downward, the guide rod 20 of the guide mechanism slides within the fixed cylinder 21, providing stable guidance and preventing deviation. During the downward movement of the moving ring 18, the locking rod 19 on one side moves synchronously. The bottom of the locking rod 19 adopts an arc transition design, which can smoothly engage with the locking groove 41 at the conveying end of the 125-particle conveying chamber 4. The five sets of locking rods 19 engage synchronously, forming a uniform limit on the 125-particle conveying chamber 4 from the circumference, ensuring a firm fixation. During the particle implantation stage, the sliding push plate 8 on the outside of the threaded guide rod 7 is pushed, causing the push rod 9 to slide along the guide cylinder 12, thereby pushing the 125 particles in the 125-particle conveying chamber 4 to be precisely implanted into the target position through the implantation docking device 6.

[0034] Example 2: This example differs from Example 1 in that it discloses a sufficient limiting treatment on the outer side of the 125-particle transport chamber 4, as shown in the attached document. Figure 6 -Appendix Figure 8 A limiting ring 24 is fixed to the outside of the implantation chamber 3, and the inner side of the limiting ring 24 is nested on the outside of the 125-particle delivery chamber 4. An air storage mechanism is provided inside the guide mechanism. The air storage mechanism acts within the limiting ring 24 to achieve sufficient limiting treatment of the outside of the 125-particle delivery chamber 4. The air storage mechanism includes a piston block 2001 fixed at the bottom of the guide rod 20. The bottom of the piston block 2001 is connected to the inside of the fixed cylinder 21 through a return spring 22. One side of the piston block 2001 is connected to the elastic air cushion 25 through the delivery pipe 23. The elastic air cushion 25 is attached to the inner side of the limiting ring 24. The elasticity of the elastic air cushion 25 is less than that of the return spring 22, and the outer side of the elastic air cushion 25 is attached to the outer side of the 125-particle delivery chamber 4. An anti-slip pad is provided on the outer side of the elastic air cushion 25.

[0035] By cooperating with the gas storage mechanism, the outer limiting effect of the 125-particle delivery chamber 4 is further enhanced. When the 125-particle delivery chamber 4 is embedded into the implantation chamber 3, the limiting ring 24 on the outside of the implantation chamber 3 first nests around the outside of the 125-particle delivery chamber 4, forming a preliminary radial limit to prevent significant displacement of the 125-particle delivery chamber 4 during installation. When the moving ring 18 in Embodiment 1 moves down and drives the guide rod 20 to slide along the fixed cylinder 21, the piston block 2001 at the bottom of the guide rod 20 simultaneously compresses the return spring 22 downward and squeezes the gas in the fixed cylinder 21. The gas is transported to the viscous membrane through the delivery pipe 23. The elastic air cushion 25 attached to the inner side of the limiting ring 24 allows the elastic air cushion 25 to expand and fit tightly against the outer side of the 125-particle delivery chamber 4. Since the elasticity of the elastic air cushion 25 is less than that of the return spring 22, it can prevent the 125-particle delivery chamber 4 from being deformed due to excessive expansion of the air cushion. At the same time, the anti-slip pad on the outer side of the air cushion can increase the friction with the 125-particle delivery chamber 4, preventing the 125-particle delivery chamber 4 from shifting due to vibration during the operation. Through the dual fixing mode of circumferential locking and outer air cushion limiting, the stability of the installation of the 125-particle delivery chamber 4 is further improved, and the problems of displacement and falling off are completely solved.

[0036] Example 3: This example mainly discloses a more stable adjustment of the distance for transporting 125 particles. Please refer to the attached document. Figure 1 - Appendix Figure 3 and attached Figure 9 An embedding rod is provided on the outer side of the rotating block 13, and a through hole is provided on the outer side of the implantation chamber 3 at an equal angle to the rotating block 13 for the embedding rod to fix the rotating block 13 through the through hole. A locking groove 41 is provided at the conveying end of the 125 particle conveying chamber 4, and an elastic pushing rod 5 is slidably provided on the side of the 125 particle conveying chamber 4 away from the locking groove 41. The elastic pushing rod 5 is used to push the 125 particles inside the 125 particle conveying chamber 4. The limit adjustment mechanism includes a threaded block 11 threadedly connected to the bottom of the threaded guide rod 7, and a scale strip 10 is fixed on one side of the threaded guide rod 7. The outer side of the guide cylinder 12 is fixed to the inner side of the support frame 1, and the bottom of the guide cylinder 12 is connected to the top of the implantation docking device 6.

[0037] First, the insert rod on the outer side of the rotating block 13 can pass through the equal-angle through hole on the outer side of the implantation chamber 3. After the locking rod 19 completes the locking, the position of the rotating block 13 is fixed to prevent the locking adjustment mechanism from loosening and to ensure that the fixed state of the 125 particle delivery chamber 4 remains stable. During particle delivery, the elastic push rod 5 on the side of the 125 particle delivery chamber 4 away from the locking groove 41 can assist in pushing the particles to prevent the particles from getting stuck in the 125 particle delivery chamber 4 and to ensure smooth delivery. In order to accurately control the particle implantation distance, the scale bar 10 on one side of the threaded guide rod 7 can clearly mark the movement stroke of the sliding push plate 8. Medical staff can adjust the initial position and movement limit of the sliding push plate 8 by rotating the threaded block 11 at the bottom of the threaded guide rod 7 according to the treatment needs, thereby accurately controlling the pushing distance of the push rod 9 and achieving precise control of the particle implantation depth. At the same time, the outer side of the guide cylinder 12 is fixed to the inner side of the support frame 1, and the bottom is precisely connected to the top of the implantation dock 6 to ensure that the pushing force of the push rod 9 is transmitted in a straight line, further ensuring the straightness and positional accuracy of particle delivery and avoiding particle implantation position deviation due to pushing offset.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-tube 125I particle synchronous implantation device, comprising a support frame (1), a curved handle (2) provided on one side of the support frame (1), the outer side of the support frame (1) fixed to one side of an implantation chamber (3), and a 125 particle delivery chamber (4) embedded in the lower end of the implantation chamber (3), and an implantation docking device (6) provided at the bottom of the implantation chamber (3); characterized in that: A threaded guide rod (7) is fixed to the outer side of the upper end of the support frame (1). A sliding push plate (8) is slidably mounted on the outer side of the threaded guide rod (7). A push rod (9) is fixed at the bottom of the sliding push plate (8). The bottom of the push rod (9) is slidably mounted in the guide cylinder (12). The outer end of the 125 particle conveying chamber (4) is embedded in the guide cylinder (12). A rotating block (13) is rotatably mounted on the outer side of the support frame (1). The outer end of the rotating block (13) is connected to the locking adjustment mechanism. The locking adjustment mechanism is installed inside the implantation chamber (3) and is used for locking and limiting the 125 particle conveying chamber (4). A limiting mechanism is provided on the outer side of the threaded guide rod (7). The limiting mechanism is used to adjust the position of the sliding push plate (8) and the push rod (9).

2. The multi-tube 125I particle synchronous implantation device according to claim 1, characterized in that: An embedding rod is provided on the outer side of the rotating block (13), and a through hole is provided on the outer side of the implantation chamber (3) at an equal angle to the rotating block (13) for the embedding rod to fix the rotating block (13) through the through hole. A slot (41) is provided at the conveying end of the 125 particle conveying chamber (4), and an elastic push rod (5) is slidably provided on the side of the 125 particle conveying chamber (4) away from the slot (41). The elastic push rod (5) is used to push the 125 particles inside the 125 particle conveying chamber (4).

3. The multi-tube 125I particle synchronous implantation device according to claim 1, characterized in that: The limiting adjustment mechanism includes a threaded block (11) threaded to the bottom of the threaded guide rod (7), and a scale strip (10) is fixed on one side of the threaded guide rod (7).

4. The multi-tube 125I particle synchronous implantation device according to claim 1, characterized in that: The outer side of the guide tube (12) is fixed to the inner side of the support frame (1), and the bottom of the guide tube (12) is connected to the top of the implant dock (6). The outer side of the implantation chamber (3) is also fixed with a limiting ring (24), and the inner side of the limiting ring (24) is nested on the outer side of the 125 particle delivery chamber (4).

5. The multi-tube 125I particle synchronous implantation device according to claim 1, characterized in that: The locking adjustment mechanism includes a set of cams (14) fixed at the position of the rotating block (13). The outer side of the cams (14) is rotatably set inside the implantation chamber (3). A bevel gear (15) is fixed at one end of the cams (14). A matching conical ring (16) is also meshed with the outer side of the bevel gear (15). The top of the matching conical ring (16) is fixed inside the bottom end of the rotating ring (17). The bottom of the cams (14) corresponds to the top outside of the moving ring (18). A guide mechanism is provided at the lower end of the moving ring (18). A locking rod (19) is fixed on the side of the guide mechanism near the moving ring (18). The bottom of the locking rod (19) is inserted into the inside of the locking groove (41).

6. The multi-tube 125I particle synchronous implantation device according to claim 5, characterized in that: The outer side of the rotating ring (17) is rotatably set inside the implantation chamber (3). The bevel gears (15) are arranged in five sets at equal angles with respect to the center position of the cooperating bevel ring (16), and the number of the locking rods (19) is the same as the number of bevel gears (15).

7. The multi-tube 125I particle synchronous implantation device according to claim 5, characterized in that: The guiding mechanism includes a guide rod (20) fixed to the bottom of the moving ring (18), the outer side of the guide rod (20) is slidably disposed inside the fixed cylinder (21), and the bottom position of the fixed cylinder (21) is fixed to the top of the implantation chamber (3).

8. The multi-tube 125I particle synchronous implantation device according to claim 7, characterized in that: The guide mechanism is equipped with an air storage mechanism inside. The air storage mechanism acts within the limiting ring (24) to fully limit the outer side of the 125 particle conveying chamber (4). The air storage mechanism includes a piston block (2001) fixed at the bottom of the guide rod (20). The bottom of the piston block (2001) is connected to the inside of the fixed cylinder (21) through a return spring (22). One side of the piston block (2001) is connected to the elastic air cushion (25) through a conveying pipe (23). The elastic air cushion (25) is attached to the inner side of the limiting ring (24).

9. A multi-tube 125I particle synchronous implantation device according to claim 8, characterized in that: The elasticity of the elastic air cushion (25) is less than that of the return spring (22), and the outer side of the elastic air cushion (25) is attached to the outer side of the 125 particle conveying chamber (4). An anti-slip pad is provided on the outer side of the elastic air cushion (25).

10. A multi-tube 125I particle synchronous implantation device according to claim 7, characterized in that: The bottom of the lever (19) is rounded, and the lever (19) forms a sliding structure with the inside of the implantation chamber (3) through the moving ring (18).

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