Rod-shaped nuclide feeding device and method

Abstract

The invention discloses a rod-shaped nuclide feeding device and method, and the device comprises an annular channel module which comprises a pedestal and a shielding cover detachably connected with the pedestal, the inner circumference of the pedestal is provided with an annular channel, and the pedestal is provided with a vertical channel for particle filling and implantation at the starting point of the annular channel; the particle pulling module comprises a mounting ring, a spring piece arranged at the periphery of the mounting ring, a particle pulling piece connected with the end part of the spring piece and an operating piece connected with the mounting ring, and the particle pulling piece is provided with a first end surface for blocking the rod-shaped nuclide in the annular channel and a second end surface for facilitating the rod-shaped nuclide in the vertical channel to pass through; and the particle pushing ring module comprises a particle pushing ring, a particle pushing ring block arranged on the particle pushing ring and a clockwork spring which is matched with the particle pushing ring and enables the particle pushing ring block to have a trend of approaching the vertical channel. According to the device and the method, the operation efficiency and the safety can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a rod-shaped nuclide feeding device and method. Background Art

[0002] Radioactive seed implantation for tumor treatment is a form of brachytherapy. Radioactive seeds are implanted into the tumor via a hollow channel in a percutaneous puncture needle. Once inside the tumor, the radioactive seeds release radiation, achieving their therapeutic effect. Currently, this technique is widely used clinically, but its implementation is largely manual, resulting in difficulty controlling puncture precision. The implantation process also poses a number of risks, including radiation exposure to medical staff. The surgical outcome is highly dependent on the physician's experience. Automated and intelligent assistive devices, particularly surgical robots, can effectively address these issues. To address the cumbersome manual implantation procedures, radiation hazards, and accurate seed placement, automated implantation using automated tools is one of the best approaches. Automated seed implantation requires a solution for automated seed feeding. Clinically used radioactive seeds are sealed iodine-125 seeds with a diameter of 0.8 mm and a length of 4.5 mm. The average number of seeds used in a single surgery is over 30, with the maximum number reaching approximately 100 in extreme cases. Currently, the particle magazines generally used in conjunction with surgery are arranged in straight lines and in-line. This is limited by the structure of the iodine-125 sealed seed source, which is a 0.05mm titanium shell wrapped with a silver wire that absorbs iodine-125. It cannot withstand too much squeezing pressure, and generally only contains 10 radioactive particles. This cannot meet the requirement of not changing the magazine during the operation, and thus cannot achieve smooth control of the automated process.

[0003] CN216456567U proposes a radioactive particle storage module, in which radioactive particles are arranged in an annular groove, which can greatly increase the number of radioactive particles. However, how the particles are loaded and how to maintain a stable state in the annular groove are not explained, and the actual structure cannot achieve this. At the same time, as the number of particles increases, the force of the torsion spring on the last particle of the toggle structure becomes increasingly greater, which may cause the particles to deform, and the squeezing between the particles may also cause the particles to be discharged unsmoothly. The last particle may fall at the channel mouth before it is loaded into the equipment for use.

[0004] CN205127112U proposes another scroll spring type radioactive particle magazine, in which the radioactive particles are located in the spiral groove of the particle tray, one end of which faces the particle outlet channel, and the sliding pin at the rear end of the other end is connected to the slider and slides on the rotating guide plate. The middle of the rotating guide plate is fixed to the central axis, and the middle groove of the central axis is connected to the inner ring of the coil spring. The bottom can rotate in the particle tray countersunk hole, and the outer ring of the coil spring is fixed to the particle tray groove. The overall structure can basically realize the loading of more particles and the pushing of particles into the channel. However, the detailed logic of how to load particles and push particles is not clearly explained, which brings safety and reliability in actual clinical applications. Summary of the Invention

[0005] The present invention aims to provide a rod-shaped nuclide feeding device and method to improve work efficiency and safety performance.

[0006] Based on the above problems, one of the technical solutions provided by the present invention is:

[0007] A rod-shaped nuclide feeding device, comprising:

[0008] An annular channel module comprises a base and a shield detachably connected to the base, a receiving space being formed between the shield and the base, an annular channel being provided on the inner periphery of the base, and a vertical channel for particle loading and implantation being provided on the base at the starting point of the annular channel;

[0009] a particle pulling module, which is rotatably mounted on the base and accommodated in the accommodation space, and is used to retain the rod-shaped nuclide in the annular channel, comprising a mounting ring, a spring sheet disposed on the outer periphery of the mounting ring, a particle pulling sheet connected to the end of the spring sheet, and an operating member connected to the mounting ring, the particle pulling sheet having a first end face for blocking the rod-shaped nuclide in the annular channel and a second end face for facilitating the passage of the rod-shaped nuclide in the vertical channel, a accommodating gap being formed between the second end face and the annular channel, the accommodating gap being gradually narrowed from the vertical channel toward the annular channel;

[0010] The particle push ring module is rotatably arranged on the base and accommodated in the accommodating space, comprising a particle push ring, a particle push ring block arranged on the particle push ring, and a clockwork spring that cooperates with the particle push ring and makes the particle push ring block tend to approach the vertical channel.

[0011] In some embodiments, a limiting groove is provided on the outer periphery of the mounting ring, and the spring sheet is detachably fixed in the limiting groove via a connecting assembly;

[0012] The mounting ring is provided with a plurality of mounting grooves arranged along the thickness direction, and the connecting assembly includes a fastening nut fixed in the mounting groove and a bolt penetrating the spring sheet and connected to the fastening nut.

[0013] In some embodiments, the base is provided with a fixed shaft extending in the axial direction, the particle pulling module and the particle pushing ring module are rotatably arranged on the fixed shaft in sequence, and the shielding cover is fixed to the end of the fixed shaft;

[0014] A positioning block protruding toward the inner circumference is provided on the side of the base close to the vertical channel, a positioning groove matching the positioning block is provided on the shielding cover, a positioning piece is provided on the side of the base away from the vertical channel, and a positioning pit matching the positioning piece is provided on the outer wall of the shielding cover.

[0015] In some embodiments, the particle pushing ring module further includes a partition, the clockwork spring is supported on the partition, the inner end of the clockwork spring is fixed on the fixed shaft and the outer end is fixed on the particle pushing ring.

[0016] In some embodiments, the end of the fixed shaft is provided with a first slot matching the inner end of the clockwork spring, and the inner wall of the particle pushing ring is provided with a second slot matching the outer end of the clockwork spring.

[0017] In some embodiments, the particle pushing ring block is provided with an arc-shaped groove at one end close to the vertical channel.

[0018] In some embodiments, a docking seat module is further included, which is detachably connected to the annular channel module and is used for implanting rod-shaped nuclides, including a docking seat and a hook assembly arranged on the docking seat for connecting to a particle implantation tool.

[0019] In some embodiments, the hook assembly includes two symmetrically arranged hooks, a hook pin fixed on the docking seat to support the hook, and a torsion spring arranged between the hook and the docking seat. The torsion spring is sleeved on the hook pin and its two ends are respectively fixed on the hook and the docking seat.

[0020] In some embodiments, the docking seat includes a seat body, a push channel arranged in the seat body, a first connector arranged at one end of the seat body, a second connector arranged at the other end of the seat body, a docking sleeve detachably connected to the first connector, and a puncture needle connector assembly detachably connected to the second connector. A space for inserting the vertical channel is provided between the push channel and the seat body, and the first connector, the push channel, the vertical channel and the second connector are connected in sequence.

[0021] Based on the above problems, the second technical solution provided by the present invention is:

[0022] A rod-shaped nuclide feeding method comprises the following steps:

[0023] S1, in the initial state, the second end face of the pulling particle sheet is close to the particle pushing ring block and has no obstruction to the vertical channel, and the first end face of the pulling particle sheet is in contact with the particle pushing ring block;

[0024] S2. Place the first rod-shaped nuclide into the starting end of the annular channel through the vertical channel, operate the operating member to drive the particle pulling sheet to rotate along the base, so that the second end face of the particle pulling sheet passes over the first rod-shaped nuclide and makes way for the annular channel. The first rod-shaped nuclide contacts the particle pushing ring block, and the operating member is operated again to cause the first end face of the particle pulling sheet to push the first rod-shaped nuclide into the annular channel and make way for the vertical channel. Repeat this process until the annular channel is fully loaded with rod-shaped nuclides. At this point, the first end face of the particle pulling sheet and the particle pushing ring block retain all the rod-shaped nuclides in the annular channel.

[0025] S3. Operate the operating member so that the second end face of the pulling particle sheet passes over the vertical channel. Under the action of the clockwork spring, the rod-shaped nuclide in contact with the first end face of the pulling particle sheet moves to the vertical channel. At this time, use the implantation tool to implant the rod-shaped nuclide. After the rod-shaped nuclide in the vertical channel is pushed, the clockwork spring acts to occupy the empty vertical channel with the subsequent rod-shaped nuclide until the implantation of all rod-shaped nuclides is completed.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] The annular channel module can be loaded with a larger number of rod-shaped nuclides. The rod-shaped nuclides are kept in the annular channel by the cooperation of the particle pulling module and the particle pushing ring module, which facilitates the loading and implantation of the rod-shaped nuclides and improves the efficiency and safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a structural schematic diagram of an embodiment of a rod-shaped nuclide feeding device of the present invention;

[0030] Figure 2 Schematic diagram of the structure of the annular channel module in an embodiment of the present invention;

[0031] Figure 3 This is one of the structural diagrams of the base in an embodiment of the present invention;

[0032] Figure 4 This is a second structural diagram of the base in an embodiment of the present invention;

[0033] Figure 5 for Figure 4 A partial enlarged view of point I in the middle;

[0034] Figure 6 This is a schematic structural diagram of a particle pulling module according to an embodiment of the present invention;

[0035] Figure 7 This is a schematic structural diagram of a particle push ring module in an embodiment of the present invention;

[0036] Figure 8 Schematic diagram of the structure of the docking station module in an embodiment of the present invention;

[0037] Figure 9 Schematic diagram of the cross-sectional structure of an embodiment of the present invention;

[0038] Figure 10 Schematic diagram of the structure of the particle implantation tool and the docking seat in the embodiment of the present invention;

[0039] Figure 11 for Figure 10 Schematic diagram of the middle AA section;

[0040] Figure 12 This is a schematic structural diagram of the initial state of the embodiment of the present invention when it is filled;

[0041] Figure 13 This is a schematic diagram of a state in which a first particle enters a vertical channel in an embodiment of the present invention;

[0042] Figure 14 This is a schematic diagram of a state in which a particle sheet is pulled over a first particle in an embodiment of the present invention;

[0043] Figure 15 This is a schematic diagram of a state in which a particle sheet is pulled to push a first particle into an annular channel in an embodiment of the present invention;

[0044] Figure 16 This is a schematic diagram of a state in which the annular channel is filled with rod-shaped nuclides in an embodiment of the present invention;

[0045] Figure 17 This is a schematic diagram of the state of pulling the particle sheet to make way for the vertical channel when implanting particles in an embodiment of the present invention;

[0046] in:

[0047] 100, annular channel module; 101, base; 1011, fixed axis; 1011a, first slot; 1012, positioning step; 1013, vertical channel; 1014, annular channel; 1015, positioning portion; 1016, operating slot; 1017, boss; 1018, positioning hole; 1019, positioning block; 102, shielding cover; 1021, positioning pit; 1022, positioning slot; 103, positioning member;

[0048] 200, particle pulling module; 201, mounting ring; 2011, limiting groove; 202, spring plate; 203, particle pulling plate; 2031, first end surface; 2032, second end surface; 204, bolt; 205, fastening nut; 206, retaining ring; 207, operating bearing; 208, operating member;

[0049] 300, particle push ring module; 301, particle push ring; 3011, particle push ring block; 3012, second slot; 302, clockwork spring; 3021, inner end; 3022, outer end; 303, partition;

[0050] 400, docking station module; 401, docking station; 4011, docking station body; 4012, push channel; 4013, first connector; 4014, second connector; 402, docking sleeve; 403, push pin connector; 404, spring; 405, puncture needle connector; 406, hook; 407, hook pin; 408, torsion spring; 409, knob plunger;

[0051] 500, bearing assembly;

[0052] 600, spacer ring;

[0053] 700, rod-shaped nuclides;

[0054] 800. Particle implantation tool. DETAILED DESCRIPTION

[0055] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present invention and are not intended to limit the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer. The implementation conditions not specified are generally those in routine experiments.

[0056] like Figure 1 and Figure 9 , which is an embodiment of the present invention, provides a rod-shaped nuclide feeding device, including an annular channel module 100 , a particle pulling module 200 and a particle pushing ring module 300 .

[0057] like Figure 2As shown, the annular channel module 100 includes a base 101 and a shielding cover 102 detachably connected to the base 101. A accommodating space is formed between the shielding cover 102 and the base 101. An annular channel 1014 is provided on the inner periphery of the base 101. A vertical channel 1013 for particle loading and placement is provided on the base 101 at the starting point of the annular channel 1014. The vertical channel 1013 extends along the height direction of the base 101 and is connected to the annular channel 1014. Rod-shaped nuclides 500 are loaded into the annular channel 1014 through the vertical channel 1013, or the rod-shaped nuclides 500 in the annular channel 1014 are implanted into the human body through the vertical channel 1013.

[0058] like Figures 3 to 5 As shown, the base 101 is a concave disc structure, and a circle of bosses 1017 are provided on the inner circumference of the base 101. An annular channel 1014 is formed between the bosses 1017 and the side walls of the base 101, as well as the axial end face of the particle pushing ring module 300. A fixed shaft 1011 extending axially is provided in the middle of the base 101. The particle pulling module 200 and the particle pushing ring module 300 are rotatably arranged on the fixed shaft 1011 in sequence. The shielding cover 102 is fixed to the end of the fixed shaft 1011. A positioning step 1012 is provided at the lower part of the fixed shaft 1011 as an axial reference for the installation of the particle pulling module 200. The particle pulling module 200 and the particle pushing ring module 300 are respectively supported on the fixed shaft 1011 via bearing assemblies 500. Spacer rings 600 are provided between adjacent bearing assemblies 500 to adjust the height and parallelism of the particle pulling module 200 and the particle pushing ring module 300.

[0059] To facilitate the installation and positioning of the shielding cover 102 and the base 101, a positioning block 1019 is provided on the side of the base 101 near the vertical channel 1013, protruding toward the inner periphery. A positioning groove 1022 is provided on the shielding cover 102 to match the positioning block 1019. A positioning member 103 is provided on the side of the base 101 away from the vertical channel 1013. A positioning recess 1021 is provided on the outer wall of the shielding cover 102 to match the positioning member 103. Preferably, the positioning member 103 is a ball plunger. A positioning portion 1015 extending in the height direction is provided on the base 101, and the positioning member 103 is mounted on the positioning portion 1015. The positioning block 1019 and the positioning groove 1022, as well as the positioning member 103 and the positioning recess 1021, are used to achieve the positioning of the shielding cover 102 and the base 101. The shielding cover 102 is then fixed to the end of the fixed shaft 1011 with screws, completing the installation of the shielding cover 102 and the base 101. At the same time, the annular channel 1014 has a starting point and an end point on both sides of the positioning block 1019 respectively.

[0060] The particle pulling module 200 is rotatably mounted on the base 101 and accommodated in the accommodation space, and is used to hold the rod-shaped nuclide 500 in the annular channel 1014. Figure 6 As shown, it includes a mounting ring 201, a spring sheet 202 arranged on the outer periphery of the mounting ring 201, a particle pulling sheet 203 connected to the end of the spring sheet 202, and an operating member 208 connected to the mounting ring 201, wherein the particle pulling sheet 203 has a first end face 2031 for blocking the rod-shaped nuclide 500 in the annular channel 1014 and a second end face 2032 for facilitating the rod-shaped nuclide 500 in the vertical channel 1013 to pass through, wherein the second end face 2032 and the first end face 2031 are connected to form an acute angle structure, and an accommodating gap is formed between the second end face 2032 and the annular channel 1014, and the accommodating gap is gradually reduced from the vertical channel 1013 to the annular channel 1014.

[0061] In order to facilitate the installation of the spring sheet 202, a limiting groove 2011 is provided on the outer periphery of the mounting ring 201. The spring sheet 202 is detachably fixed in the limiting groove 2011 through a connecting assembly. Specifically, a plurality of mounting grooves arranged along the thickness direction are provided on the mounting ring 201. The connecting assembly includes a fastening nut 205 fixed in the mounting groove and a bolt 204 that passes through the spring sheet 202 and is connected to the fastening nut 205.

[0062] The operating member 208 is supported by the operating bearing 207 and extends along the thickness direction of the mounting ring 201. A retaining ring 206 is installed on the operating member 208 between the operating bearing 207 and the mounting ring 201. At the same time, an operating groove 1016 for the operating member 208 to pass through is provided on the base 101. Preferably, the operating groove 1016 is a waist-shaped hole.

[0063] The particle push ring module 300 is rotatably mounted on the base 101 and accommodated in the accommodation space. Figure 7 As shown, the particle push ring 301 includes a particle push ring block 3011 disposed on the particle push ring 301, and a spring 302 that cooperates with the particle push ring 301 and forces the particle push ring block 3011 to move closer to the vertical channel 1013. Preferably, an arc-shaped groove is provided at one end of the particle push ring block 3011 near the vertical channel 1013 to facilitate abutment and cooperation with the rod-shaped nuclide 500.

[0064] In order to facilitate the support of the clockwork spring 302, the particle pushing ring module 300 also includes a partition 303 arranged on the fixed shaft 1011, and the clockwork spring 302 is supported on the partition 303. The inner end 3021 of the clockwork spring 302 is fixed on the fixed shaft 1011 and the outer end is fixed on the particle pushing ring 301. In this way, the clockwork spring 302 makes the particle pushing ring block 3011 tend to approach the vertical channel 1013, so as to push the rod-shaped nuclides 500 in the annular channel 1014 into the vertical channel 1013 one by one.

[0065] Specifically, a first slot 1011 a matching the inner end 3021 of the spring 302 is provided at the end of the fixed shaft 1011 , and a second slot 3012 matching the outer end 3022 of the spring 302 is provided on the inner wall of the particle pushing ring 301 .

[0066] In order to facilitate the installation of the particle implantation tool, the rod-shaped nuclide feeding device further includes a docking seat module 400, which is detachably connected to the annular channel module 100 and is used for implanting the rod-shaped nuclide. Figure 8 As shown, it includes a docking seat 401 and a hook assembly disposed on the docking seat 401 for connecting to a particle implantation tool. The hook assembly includes two symmetrically arranged hooks 406, a hook pin 407 fixed to the docking seat 401 to support the hooks 406, and a torsion spring 408 disposed between the hooks 406 and the docking seat 401. The torsion spring 408 is sleeved on the hook pin 407 and has its two ends fixed to the hook 406 and the docking seat 401, respectively. The torsion spring 408 makes the hooks 406 tend to move closer to the docking seat 401. When the two hooks 406 are opened, as shown in FIG. Figure 10 and Figure 11 As shown, the particle implantation tool can be fixed on two hooks 406. In order to improve the stability of the structure, hook grooves matching the particle implantation tool are provided on the hooks 406.

[0067] The docking seat 401 includes a U-shaped seat body 4011, a push channel 4012 arranged in the seat body 4011, a first connector 4013 arranged at one end of the seat body 4011, a second connector 4014 arranged at the other end of the seat body 4011, a docking sleeve 402 detachably connected to the first connector 4013, and a puncture needle connector assembly detachably connected to the second connector 4014. A space for inserting the vertical channel 1013 is provided between the push channel 4012 and the seat body 4011. The base 101 is positioned between the knob plunger 409 and the seat body 4011. A positioning hole 1018 cooperating with the knob plunger 409 is provided at the bottom of the base 101.

[0068] The puncture needle connector assembly includes a push-needle connector 403 connected to a second connector 4014, a spring 404 mounted on the end of the push-needle connector 403 facing away from the docking seat 401, and a puncture needle connector 405 mounted on the push-needle connector 403 and wrapped around the outer periphery of the spring 404. The first connector 4013, the push channel 4012, the vertical channel 1013, and the second connector 4014 are sequentially connected. This allows the particle push needle to enter the push channel 4012 through the docking sleeve 402, then push the rod-shaped nuclide 500 in the vertical channel 1013 through the second connector 4014 to the puncture needle connector assembly, and finally implanted into the human body through the puncture needle. The puncture needle is mounted on the puncture needle connector 405 and abuts against the spring 404, ensuring the stability of the puncture needle structure.

[0069] The feeding method of the rod-shaped nuclide feeding device comprises the following steps:

[0070] S1, in the initial state, such as Figure 11 As shown, the second end surface 2032 of the particle pulling sheet 203 is close to the particle pushing ring block 3011 and has no obstruction to the vertical channel 1013, and the first end surface 2031 of the particle pulling sheet 203 abuts against the particle pushing ring block 3011;

[0071] S2, such as Figure 13 As shown, the first rod-shaped nuclide 500 is placed into the beginning of the annular channel 1014 through the vertical channel 1013, and the operating member 108 is operated to drive the particle sheet 203 to rotate along the base 101, as shown in FIG. Figure 14 As shown, the second end face 2032 of the particle pulling sheet 203 passes over the first rod-shaped nuclide 500 to leave the annular channel 1014, and the first rod-shaped nuclide 500 contacts the particle pushing ring block 3011, as shown in FIG. Figure 15 As shown, the operating member 208 is operated again to make the first end surface 2031 of the pulling particle sheet 203 push the first rod-shaped nuclide 500 into the annular channel 1014 and make way for the vertical channel 1013. This is repeated until the annular channel 1014 is filled with the rod-shaped nuclide 500. At this time, as shown in FIG. Figure 16 As shown, the first end surface 2031 of the particle pulling sheet 203 and the particle pushing ring block 3011 keep all the rod-shaped nuclides 500 in the annular channel 1014;

[0072] S3, such as Figure 17 As shown, the operating member 208 is operated to make the second end face 2032 of the pulling particle sheet 203 pass over the vertical channel 1013. Under the action of the clockwork spring 302, the rod-shaped nuclide 500 in contact with the first end face 2031 of the pulling particle sheet 230 moves to the vertical channel 1013. At this time, the rod-shaped nuclide is implanted using the implantation tool. After the rod-shaped nuclide 500 in the vertical channel 1013 is pushed, under the action of the clockwork spring 302, the empty vertical channel 1013 is occupied by the rod-shaped nuclide 500 behind until the implantation operation of all the rod-shaped nuclides 500 is completed.

[0073] In summary, the rod-shaped nuclide feeding device has a compact structure, can accommodate more particles, and is convenient for loading and implanting particles, thereby improving the efficiency and safety of surgery.

[0074] The above examples are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A rod-shaped nuclide feeding device, characterized in that: include: An annular channel module comprises a base and a shield detachably connected to the base, a receiving space being formed between the shield and the base, an annular channel being provided on the inner periphery of the base, and a vertical channel for particle loading and implantation being provided on the base at the starting point of the annular channel; a particle pulling module, which is rotatably mounted on the base and accommodated in the accommodation space, and is used to retain the rod-shaped nuclide in the annular channel, comprising a mounting ring, a spring sheet disposed on the outer periphery of the mounting ring, a particle pulling sheet connected to the end of the spring sheet, and an operating member connected to the mounting ring, the particle pulling sheet having a first end face for blocking the rod-shaped nuclide in the annular channel and a second end face for facilitating the passage of the rod-shaped nuclide in the vertical channel, a accommodating gap being formed between the second end face and the annular channel, the accommodating gap being gradually narrowed from the vertical channel toward the annular channel; The particle push ring module is rotatably arranged on the base and accommodated in the accommodating space, comprising a particle push ring, a particle push ring block arranged on the particle push ring, and a clockwork spring that cooperates with the particle push ring and makes the particle push ring block tend to approach the vertical channel.

2. The rod-shaped nuclide feeding device according to claim 1, characterized in that: A limiting groove is provided on the outer periphery of the mounting ring, and the spring sheet is detachably fixed in the limiting groove via a connecting assembly; The mounting ring is provided with a plurality of mounting grooves arranged along the thickness direction, and the connecting assembly includes a fastening nut fixed in the mounting groove and a bolt penetrating the spring sheet and connected to the fastening nut.

3. The rod-shaped nuclide feeding device according to claim 1, characterized in that: The base is provided with a fixed shaft extending in the axial direction, the particle pulling module and the particle pushing ring module are rotatably arranged on the fixed shaft in sequence, and the shielding cover is fixed to the end of the fixed shaft; A positioning block protruding toward the inner circumference is provided on the side of the base close to the vertical channel, a positioning groove matching the positioning block is provided on the shielding cover, a positioning piece is provided on the side of the base away from the vertical channel, and a positioning pit matching the positioning piece is provided on the outer wall of the shielding cover.

4. The rod-shaped nuclide feeding device according to claim 3, characterized in that: The particle pushing ring module further includes a partition, the clockwork spring is supported on the partition, the inner end of the clockwork spring is fixed on the fixed shaft and the outer end is fixed on the particle pushing ring.

5. The rod-shaped nuclide feeding device according to claim 4, characterized in that: The end of the fixed shaft is provided with a first slot matching the inner end of the spring, and the inner wall of the particle pushing ring is provided with a second slot matching the outer end of the spring.

6. The rod-shaped nuclide feeding device according to claim 1, characterized in that: The particle pushing ring block is provided with an arc-shaped groove at one end close to the vertical channel.

7. The rod-shaped nuclide feeding device according to claim 1, characterized in that: It also includes a docking seat module, which is detachably connected to the annular channel module and is used for implanting rod-shaped nuclides. It includes a docking seat and a hook component arranged on the docking seat for connecting a particle implantation tool.

8. The rod-shaped nuclide feeding device according to claim 7, characterized in that: The hook assembly includes two symmetrically arranged hooks, a hook pin fixed on the docking seat to support the hook, and a torsion spring arranged between the hook and the docking seat. The torsion spring is sleeved on the hook pin and its two ends are respectively fixed on the hook and the docking seat.

9. The rod-shaped nuclide feeding device according to claim 8, characterized in that: The docking seat includes a seat body, a push channel arranged in the seat body, a first connector arranged at one end of the seat body, a second connector arranged at the other end of the seat body, a docking sleeve detachably connected to the first connector, and a puncture needle connector assembly detachably connected to the second connector. A space for the vertical channel to be placed is provided between the push channel and the seat body, and the first connector, the push channel, the vertical channel and the second connector are connected in sequence.

10. The feeding method of the rod-shaped nuclide feeding device according to claim 1, characterized in that: The following steps are involved: S1, in the initial state, the second end face of the pulling particle sheet is close to the particle pushing ring block and has no obstruction to the vertical channel, and the first end face of the pulling particle sheet is in contact with the particle pushing ring block; S2. Place the first rod-shaped nuclide into the starting end of the annular channel through the vertical channel, operate the operating member to drive the particle pulling sheet to rotate along the base, so that the second end face of the particle pulling sheet passes over the first rod-shaped nuclide and makes way for the annular channel. The first rod-shaped nuclide contacts the particle pushing ring block, and the operating member is operated again to cause the first end face of the particle pulling sheet to push the first rod-shaped nuclide into the annular channel and make way for the vertical channel. Repeat this process until the annular channel is fully loaded with rod-shaped nuclides. At this point, the first end face of the particle pulling sheet and the particle pushing ring block retain all the rod-shaped nuclides in the annular channel. S3. Operate the operating member so that the second end face of the pulling particle sheet passes over the vertical channel. Under the action of the clockwork spring, the rod-shaped nuclide in contact with the first end face of the pulling particle sheet moves to the vertical channel. At this time, use the implantation tool to implant the rod-shaped nuclide. After the rod-shaped nuclide in the vertical channel is pushed, the clockwork spring acts to occupy the empty vertical channel with the subsequent rod-shaped nuclide until the implantation of all rod-shaped nuclides is completed.

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