CN219743676U - Radioactive seed protection implanter - Google Patents

Abstract

The present utility model provides a radioactive seed protection implanter comprising: the protector body is connected with the radioactive seed puncture needle and the seed bin assembly and forms a push rod channel; the puncture needle moving device comprises a supporting seat, a gear rotatably connected to the supporting seat, a rack meshed with the gear, a rotating wheel coaxially fixedly connected with the gear and a distance component; one end of the rack is fixedly connected with the protector body; the rotating wheel drives the gear to rotate, so that the rack, the protector body and the radioactive seed puncture needle are driven to move towards or away from the supporting seat along the axial direction of the puncture needle; the distance assembly comprises a plurality of positioning grooves and a second ball plunger, the positioning grooves and the second ball plungers are arranged in an annular array along the axis of the gear, and when the second ball plungers are inserted into the positioning grooves, the gear is in contact limit with the supporting seat; and an interval angle is formed between the adjacent positioning grooves. The implanter has a minimum needle withdrawal interval which is an integer multiple of the arc length corresponding to the interval angle on the gear pitch circle.

Description

Radioactive seed protection implanter

Technical Field

The utility model relates to the field of medical instruments, in particular to a radioactive seed protection implanter.

Background

Radioactive seed treatment is a form of cancer treatment, which is to place radioactive seeds in a patient to irradiate the tumor, so as to achieve the purpose of inhibiting or slowing down the growth of the focus. During the course of treatment, the physician typically implants several radioactive seeds within or around the tumor, thereby exposing the tumor to a higher radiation dose than in external radiation therapy. Since the radiation dose of the radioactive seeds decays rapidly, surrounding healthy tissue is less affected.

At present, the implantation of radioactive seeds is completed manually, and the specific process is that firstly, a radioactive seed puncture needle is inserted into tumor tissues of a patient, then, the head of the radioactive seed puncture needle is connected to an interface of a radioactive seed protector, the radioactive seed protector is provided with a seed magazine, foremost seeds in the seed magazine are positioned in a trajectory of the radioactive seed protector, and finally, a medical staff manually pushes and pulls a needle core along the trajectory so as to push the radioactive seeds in the trajectory to the tumor positions of the patient along the radioactive seed puncture needle.

The Chinese patent with publication number CN 202822474U provides a novel pen-type internal radiotherapy particle implanter. The implanter has the needle withdrawing function with fixed distance, has the problems of small selectable fixed needle withdrawing distance and discontinuity when switching between different needle withdrawing distances, and reduces the precision of radioactive seed implantation. In addition, the implanter is fixedly connected with the operation positioning template through an adjustable bracket component. The adjustable bracket component is used for fixedly supporting the implanter and simultaneously adapting the relative positions between the butt joint positions of different puncture needles and the operation positioning template. The adjustable bracket assembly can only be adjusted at a fixed interval and cannot be continuously adjusted between intervals of different sizes. Because the distance of movement of the support of the radioactive seed protector is related to the needle withdrawal distance, the inability of the continuously adjustable support assembly results in reduced initial positioning accuracy of the radioactive seed puncture needle during docking.

Disclosure of Invention

The utility model aims to: the utility model aims to solve the technical problem of providing a radioactive seed protection implanter which can improve the precision of the needle withdrawing interval of a radioactive seed puncture needle aiming at the defects of the prior art.

In order to solve the technical problems, the utility model provides a radioactive seed protection implanter which comprises a protector assembly, a seed bin assembly and a puncture needle moving device. The guard assembly includes a guard body. The protector body is connected with the radioactive seed puncture needle and the seed bin assembly and forms a push rod channel for pushing and pushing out the seed push rod, and the seed bin assembly is used for replenishing the seed into the push rod channel. The puncture needle moving device comprises a supporting seat, a gear rotatably connected to the supporting seat, a rack meshed with the gear, a rotating wheel coaxially fixedly connected with the gear and a distance component. One end of the rack is fixedly connected with the protector body. The rotating wheel drives the gear to rotate, so that the rack, the protector body and the radioactive seed puncture needle are driven to move towards or away from the supporting seat along the axial direction of the puncture needle.

The distance assembly comprises a plurality of positioning grooves which are arranged along the annular array of the gear axis and a second ball plunger which can axially move along the positioning grooves. When the second ball plunger is inserted into the positioning groove, the gear is in contact limit with the supporting seat. And an interval angle is formed between the adjacent positioning grooves. The implanter has a minimum needle withdrawal interval which is an integer multiple of the arc length corresponding to the interval angle on the gear pitch circle.

When the radioactive seeds are withdrawn, the spacing between adjacent implant target locations is often not exactly the same. The least common divisor of the most common interval values is used as the minimum needle withdrawing interval of the implanter to be used, and the minimum needle withdrawing interval is an integral multiple of the arc length corresponding to the interval angle on the gear dividing circle, so that continuous needle withdrawing and uninterrupted needle withdrawing can be realized when the needle withdrawing distance is switched between different interval values, and the precision of seed implantation is improved.

Specifically, the rotating wheel and the gear are respectively positioned in the supporting seat. A portion of the outer circumference of the wheel extends beyond the support seat.

Optionally, the rack with the rear end fixed connection of protector body, and be provided with the push rod guide way along its axial run-through in the rack, push rod guide way with push rod passageway coaxial intercommunication.

Further, the support seat further comprises a rack sliding through groove, and the rack sliding through groove penetrates through the support seat and is matched with the rack. The other end of the rack penetrates through the rack sliding through groove and is fixedly connected with the protector body.

Optionally, the implanter further comprises a continuously adjustable bracket assembly, wherein one end of the continuously adjustable bracket assembly is connected with the operation positioning template, and the other end of the continuously adjustable bracket assembly is connected with the protector body when the implanter is in use.

Specifically, the continuously adjustable bracket assembly comprises a plurality of bracket connecting rods which are arranged in parallel, a connecting block which is connected with the proximal ends of the bracket connecting rods, and bracket feet which are connected with the distal ends of the bracket connecting rods. The bracket connecting rod is connected with the supporting seat and can slide or be fixed relative to the supporting seat. When in use, the continuously adjustable bracket component is connected with the operation positioning template through the bracket anchor.

Specifically, the implanter includes bullet briquetting and button spring, the supporting seat includes bullet briquetting mounting groove, bullet pressure limit groove has been seted up to a lateral wall in bullet briquetting mounting groove, the support connecting rod passes bullet pressure limit groove. The spring block is arranged in the spring block mounting groove, and one end of the spring block extends out of the supporting seat. The button spring is connected with the elastic pressing block and the supporting seat and is used for applying a pressing force towards the bracket connecting rod to the elastic pressing block.

Optionally, the positioning groove is formed on an end face of one side of the rotating wheel, which is close to the supporting seat. And a second mounting hole for mounting the second ball plunger is formed in the inner wall of one side, opposite to the positioning groove, of the supporting seat.

Specifically, the distance component comprises a pressure spring, and the pressure spring is connected with the second ball plunger and the second mounting hole.

Specifically, the seed bin assembly is detachably connected with the guard body and is formed with a push rod channel penetrating through the guard body. The front end of the protector body is provided with a puncture needle interface, and when the protector body is in butt joint with the radioactive seed puncture needle through the puncture needle interface, the push rod pore canal is coaxially communicated with the inner hole of the radioactive seed puncture needle to form the push rod channel.

The beneficial effects are that:

(1) The implant provided by the utility model has the minimum needle withdrawal interval, the interval angle is formed between the adjacent positioning grooves, and the gear and the positioning grooves are arranged so that the minimum needle withdrawal interval is an integral multiple of the arc length corresponding to the interval angle on the gear dividing circle, so that the minimum needle withdrawal interval is ensured to be completed when the gear rotates through the interval of the integral positioning grooves, continuous needle withdrawal and uninterrupted operation are realized, and the seed implantation precision is improved.

(2) An embodiment of the utility model provides a wheel which is located inside the support seat and a part of the outer circumference of which protrudes beyond the support seat. The rotating wheel is rotated by hand, and drives the gear to rotate, so that the rack and the protector body are driven to move towards or away from the supporting seat along the axial direction of the push rod pore canal. Compared with the externally arranged rotating wheel in the prior art, the rotating wheel is arranged in the supporting seat, and the technical effect is that the supporting seat can be held by one hand and the rotating wheel can be rotated by the thumb, so that one-hand operation is realized, and the operation is simple and convenient.

(3) A push rod guide channel is arranged in the rack in an axial penetrating mode, and the push rod guide channel is communicated with the push rod channel coaxially. Compared with the prior art that the push rod guide pipe is independently arranged, the rack is used as the push rod guide pipe, so that the integral structure is simplified.

(4) One embodiment of the utility model adopts a continuously adjustable bracket assembly which comprises a plurality of bracket connecting rods which are arranged in parallel and bracket legs which are connected with the distal ends of the bracket connecting rods, and the continuously adjustable bracket assembly is connected with a surgical positioning template through the bracket legs so as to fixedly support the protector body. The relative position of the implant and the patient is adapted by providing that the bracket connecting rod can slide or be fixed relative to the guard body.

Drawings

The foregoing and/or other advantages of the utility model will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings and detailed description.

Fig. 1 is a schematic perspective view of a radioactive seed protection implant according to an embodiment of the present utility model.

FIG. 2 is a front view of the implant shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 3;

fig. 5 is a schematic perspective view of a guard body according to an embodiment of the present utility model;

fig. 6 is a front view of the guard body shown in fig. 5;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;

fig. 8 is a schematic perspective view of a supporting seat body according to an embodiment of the present utility model;

FIG. 9 is a right side view of the support base body shown in FIG. 8;

FIG. 10 is a cross-sectional view taken along line E-E of FIG. 9;

FIG. 11 is a rear view of the support base body shown in FIG. 8;

fig. 12 is a sectional view taken along line B-B of fig. 2.

The reference numerals are as follows: guard assembly 100, cavity 111, first mounting hole 112, seed through hole 113, positioning portion 114, needle hub 115, mounting slot 116, threaded hole 117, connecting screw 120, seed cartridge assembly 200, needle shifter 300, support base 310, first circular hole 311, second circular hole 312, third circular hole 313, fourth circular hole 314, first cover plate positioning slot 315, sliding through slot 316, snap block mounting slot 317, snap limit slot 318, gear 321, runner 322, positioning slot 325, push rod guide channel 333, mounting shaft 340, first shaft segment 341, step segment 343, second shaft segment 342, slide bearing 350, cover plate 360, second ball plunger 370, snap block 380, button spring 390, continuously adjustable bracket assembly 400, bracket connecting rod 410, connecting block 420, bracket anchor 430.

Detailed Description

The technical scheme of the utility model is described in detail below with reference to the accompanying drawings.

The utility model provides a radioactive seed protection implanter. As shown in fig. 1-3, the implanter includes an guard assembly 100, a seed cartridge assembly 200, and a needle moving device 300.

As shown in fig. 1, the guard assembly 100 includes a guard body 110. The seed cartridge assembly 200 is detachably connected to the guard body 110 and forms a push rod tunnel through the guard body 110.

As shown in fig. 1, the front end of the protector body 110 is provided with a puncture needle interface 115, and when the protector body 110 is connected with a radioactive seed puncture needle through the puncture needle interface 115, a push rod channel is coaxially communicated with an inner hole of the radioactive seed puncture needle to form a push rod channel for pushing and pushing out a seed push rod. The guard body 110 is made of medical stainless steel for shielding the radiation of radioactive seeds.

As shown in fig. 1-3, the lancet moving device 300 includes a support base 310, a rotating wheel 322, a rack and pinion drive assembly, and a distance assembly. The wheel 322 is rotatably installed inside the support base 310 and a portion of the outer circumference of the wheel 322 protrudes outside the support base 310. As shown in fig. 4, the rack and pinion assembly includes a gear 321 and a rack 330. The gear 321 is coaxially disposed with and fixedly coupled to the wheel 322. In one particular embodiment, as shown in FIG. 4, the gear 321 is integrally formed with the wheel 322. The rack 330 material is stainless steel. As shown in fig. 3, one end of the rack 330 is engaged with the gear 321, and the other end is fixedly coupled to the rear end of the barrier body 110. By pulling the rotating wheel 322 to rotate by hand, the rotating wheel 322 drives the gear 321 to rotate, so that the rack 330 and the protector body 110 are driven to move towards or away from the supporting seat 310 along the axial direction of the push rod hole channel. When the protector body 110 moves towards the supporting seat 310, the protector body 110 drives the radioactive seed puncture needle to move towards the supporting seat 310 along the axial direction of the push rod pore canal, thereby realizing the needle withdrawing movement of the radioactive seed puncture needle.

The distance assembly comprises a plurality of detents 325 arranged in an annular array along the axis of the gear 321 and a second ball plunger 370 adapted to the detents 325 and axially movable along the detents and a pressure spring. The adjacent detents 325 form a spacing angle therebetween. Alternatively, as shown in fig. 4, the positioning groove 325 is formed on an end surface of the rotating wheel 322 near to the supporting seat 310, a second mounting hole for mounting the second ball plunger 370 is formed on an inner wall of the supporting seat 310 opposite to the positioning groove 325, and the pressure spring is connected with the second ball plunger 370 and the second mounting hole. When the second ball plunger 370 is inserted into the positioning groove 325, the rotating wheel 322 contacts with the supporting seat 310 to limit. The pressure spring is not shown in the figures.

When the radioactive seeds are withdrawn, the spacing between adjacent implant target locations is often not exactly the same. In addition to the standard implant spacing of 10mm, 8mm and 12mm are also more common spacings between adjacent implant target locations. The minimum common divisor of 8mm, 10mm and 12mm is taken as the minimum needle withdrawing interval of the implanter, and the gear 321 and the interval angle are set to be the integral multiple of the arc length corresponding to the interval angle on the gear dividing circle, so that the needle withdrawing distance can be continuously withdrawn without interruption when being switched between different interval values, and the precision of seed implantation is improved.

In a particular embodiment, the implant has a minimum needle withdrawal spacing of 2mm, which is 1 time the arc length corresponding to the spacing angle on the pitch circle of the gear 321. The number of positioning grooves is 22, and the circumference on the pitch circle of the gear 321 should be 44mm. When the gear 321 rotates from one detent 325 to an adjacent detent 325, the rack 330 moves by 2mm. The control of the moving distance of the rack can be realized by rotating the gear. When the interval between adjacent implantation target positions is 10mm, the gear 321 is rotated and spaced apart by 5 positioning grooves 325, and the rack is moved 10mm. Similarly, the rotation of 4 intervals is 8mm, and the rotation of 6 intervals is 12mm. And when the needle withdrawing distance is switched between 8mm, 10mm and 12mm, continuous needle withdrawing and uninterrupted needle withdrawing can be realized, and the precision of seed implantation is improved.

The working procedure of this example is as follows: the radioactive seed puncture needle is inserted into the tumor tissue during operation, and the luer connector of the protector 100 is connected with the luer connector of the radioactive seed puncture needle; pressing the elastic block 380, and adjusting the relative positions of the bracket connecting rod 410 and the supporting seat 310 to enable the bracket foot 430 to be connected with the operation positioning template; releasing the elastic block 380 to fix the bracket connecting rod 410 relative to the supporting seat 310; the puncture needle pushing needle is inserted along the push rod guide channel 333, and the radioactive seeds in the seed bin assembly are implanted into the tumor tissue along the push rod duct and the radioactive seed puncture needle. Then, the rotating wheel 322 is pushed by a finger to rotate through 5 positioning grooves 325, the rotating wheel 322 drives the gear 321 to rotate, the gear 321 drives the rack 330 to move by a distance of 10mm, and the second ball plunger 370 is in contact limit with the positioning groove 325 at the corresponding position, so that the movement of the rack 330 is limited, and the radioactive seed puncture needle and the protector 100 are driven by the rack 330 to move by 10mm; a needle pusher is inserted along the pusher guide channel 333 to implant a second radioactive seed. Then, the rotating wheel 322 is pushed by a finger to rotate through the 6 positioning grooves 325, at this time, the gear 321 drives the rack 330 to move by a distance of 12mm, the second ball plunger 370 contacts with the positioning groove 325 at the corresponding position to limit the movement of the rack 330, the radioactive seed puncture needle and the protector 100 are also moved by 12mm under the driving of the rack 330, and the puncture needle push needle is inserted along the push rod guide channel 333 to implant a third radioactive seed. The implantation of radioactive seeds is accomplished in the above manner according to the patient's treatment plan.

As shown in fig. 1, a portion of the outer circumference of the rotating wheel 322 protrudes beyond the support base 310 to allow an operator to grasp the support base with one hand and rotate the rotating wheel 322 by the thumb, thereby realizing one-hand operation, and having simple and convenient operation.

As shown in fig. 3, the rack 330 is fixedly connected to the rear end of the guard body 110, and a push rod guide channel 333 is disposed in the rack 330 along the axial direction thereof, and the push rod guide channel 333 is coaxially communicated with the push rod duct.

Specifically, as shown in fig. 3 and 8, the support base 310 further includes a rack sliding through slot 316, and the rack sliding through slot 316 penetrates the support base 310 and is adapted to the rack 330; the other end of the rack 330 is fixedly connected to the guard body 110 through the rack sliding through groove 316.

Specifically, as shown in fig. 5 to 7, the protector body 110 has a rectangular parallelepiped structure as a whole, and a cavity 111 for fixing the seed magazine assembly 200 is formed by recessing the top wall thereof inward. The cavity 111 is provided with a first mounting hole 112 for mounting a first ball plunger, which is not shown in the figure, and the protector body 110 is fixedly connected with the seed bin assembly 200 through the first ball plunger.

As shown in fig. 7, the cavity 111 of the protector body 110 is provided with a seed through hole 113 at corresponding positions on both sides, the seed bin assembly 200 is provided with a seed channel, and when the seed bin assembly 200 is detachably connected with the protector body 110, both ends of the seed channel are respectively communicated with the corresponding seed through holes 113 to form a push rod channel penetrating through the protector body 110.

Specifically, as shown in fig. 7, a positioning portion 114 for positioning with a needle holder of a radioactive seed puncture needle is provided on a front end side wall of the protector body 110.

Optionally, the piercing needle hub 115 is a luer fitting.

Alternatively, as shown in fig. 7, a rack mounting groove 116 is formed on a rear side wall of the guard body 110, and a rack 330 is inserted into the rack mounting groove 116 to be fixedly connected with the rear end of the guard body 110. Optionally, as shown in fig. 3, the guard assembly 100 includes a connection screw 120. A screw hole 117 communicating with the rack mounting groove 116 and adapted to the connection screw 120 is provided in the outer peripheral side wall of the guard body 110, and the screw hole 117 connection screw 120 passes through the screw hole 117 to fix the rack mounting groove 116.

The supporting seat 310 is made of stainless steel or self-lubricating wear-resistant engineering plastic and is used for supporting the transmission of the gear 321 and the rack 330. In particular, as shown in FIG. 4, the lancet moving device 300 includes a mounting shaft 340. As shown in fig. 8 to 10, the support body of the support base 310 includes a first circular hole 311, a second circular hole 312, a third circular hole 313, a fourth circular hole 314, and a first cover positioning slot 315. The first round hole 311, the second round hole 312, the third round hole 313, the fourth round hole 314 and the first cover plate positioning groove 315 are sequentially communicated. As shown in fig. 1, the cover plate 360 is mounted to the first cover plate positioning slot 315 to close the support base 310. The mounting shaft 340 is stainless steel. As shown in fig. 4, the mounting shaft 340 is provided with a first shaft section 341, a step section 343, and a second shaft section 342 in this order in the axial direction thereof. The first shaft segment 341 is fixedly mounted in the D-shaped hole of the cover plate 360, and the second shaft segment 342 is fixedly mounted in the first circular hole 311. The gear 321 and the wheel 322 are mounted on the mounting shaft 340 via a sliding bearing 350. The gear 321 is accommodated in the third circular hole 313, and the rotating wheel 322 is accommodated in the fourth circular hole 314. The stage 343 is accommodated in the second circular hole 312, and the stage 343 is used for restricting the axial movement of the sliding bearing 350 and the gear 321.

As shown in fig. 1 and 2, the implant further includes a continuously adjustable bracket assembly 400, and in use, one end of the continuously adjustable bracket assembly 400 is connected to the surgical site template and the other end is connected to the guard body 110. Specifically, as shown in fig. 1 and 2, the continuously adjustable bracket assembly 400 includes a plurality of bracket connecting rods 410 disposed in parallel with each other, a connection block 420 connected to a proximal end of each bracket connecting rod 410, and a bracket leg 430 connected to a distal end of each bracket connecting rod 410. In use, the continuously adjustable bracket assembly 400 is connected to the surgical positioning template by bracket legs 430. The bracket connecting rod 410 is connected to the guard body 110 and can slide or be fixed relative to the guard body 110 to adapt the relative position of the implant to the patient.

Alternatively, as shown in fig. 12, the implanter includes a spring block 380 and a button spring 390. As shown in fig. 11, the support base 310 includes a latch block mounting groove 317, and a latch limit groove 318 is formed in a side wall of the latch block mounting groove 317. In use, as shown in fig. 12, the bracket connecting rod 410 passes through the snap limiting slot 318. The elastic pressing block 380 is installed in the elastic pressing block installation groove 317 and one end thereof protrudes out of the supporting seat 310 to facilitate manual pressing. The button spring 390 connects the elastic block 380 with the support base 310 for applying a pressing force to the elastic block 380 toward the bracket connecting rod 410.

The utility model provides a concept and a method for a radioactive seed protection implanter, and the method and the way for realizing the technical scheme are numerous, the above description is only a preferred embodiment of the utility model, and it should be noted that, for a person skilled in the art, several improvements and modifications can be made, and the improvements and modifications should be regarded as the protection scope of the utility model, without departing from the principle of the utility model. The components not explicitly described in this embodiment can be implemented by using the prior art.

Claims (10)

1. A radioactive seed protection implanter, which is characterized by comprising a protector assembly (100), a seed bin assembly (200) and a puncture needle moving device (300); the guard assembly (100) includes a guard body (110); the protector body (110) is connected with the radioactive seed puncture needle and the seed bin assembly (200) and forms a push rod channel for pushing out the seed push rod, and the seed bin assembly (200) is used for replenishing the seed into the push rod channel; the puncture needle moving device (300) comprises a supporting seat (310), a gear (321) rotatably connected to the supporting seat (310), a rack (330) meshed with the gear (321), a rotating wheel (322) coaxially fixedly connected with the gear (321) and a distance component; one end of the rack (330) is fixedly connected with the protector body (110); the rotating wheel (322) drives the gear (321) to rotate, so that the rack, the protector body and the radioactive seed puncture needle are driven to move towards or away from the supporting seat (310) along the axial direction of the puncture needle; the distance assembly comprises a plurality of positioning grooves (325) which are annularly arranged along the axis of the gear (321) and a second ball plunger (370) which can axially move along the positioning grooves, and when the second ball plunger (370) is inserted into the positioning grooves (325), the gear (321) is in contact limit with the supporting seat (310); an interval angle is formed between the adjacent positioning grooves (325); the implanter has a minimum needle withdrawal interval that is an integer multiple of the arc length corresponding to the interval angle on the gear (321) pitch circle.

2. The radioactive seed protection implant according to claim 1, wherein the wheel (322) and the gear (321) are located inside the support (310), respectively; a portion of the outer circumference of the wheel (322) extends beyond the support (310).

3. The radioactive seed protection implant according to claim 1, wherein the rack (330) is fixedly connected to the rear end of the protector body (110), and a push rod guide channel (333) is provided in the rack (330) along an axial direction thereof, and the push rod guide channel (333) is coaxially communicated with the push rod channel.

4. A radioactive seed protection implant according to claim 3, characterized in that the support base (310) further comprises a rack sliding through slot (316), the rack sliding through slot (316) extending through the support base (310) and being adapted to the rack (330); the other end of the rack (330) passes through the rack sliding through groove (316) and is fixedly connected with the protector body (110).

5. The radioactive seed protection implant of claim 1, further comprising a continuously adjustable bracket assembly (400), wherein in use one end of the continuously adjustable bracket assembly (400) is connected to a surgical positioning template and the other end is connected to the guard body (110).

6. The radioactive seed protection implant of claim 5, wherein said continuously adjustable bracket assembly (400) comprises a plurality of bracket connecting rods (410) disposed parallel to each other, a connecting block (420) connected to a proximal end of each of said bracket connecting rods (410), and a bracket leg (430) connected to a distal end of each of said bracket connecting rods (410); the bracket connecting rod (410) is connected with the supporting seat (310) and can slide or be fixed relative to the supporting seat (310); when in use, the continuously adjustable bracket component (400) is connected with the operation positioning template through the bracket anchor (430).

7. The radioactive seed protection implanter according to claim 6, wherein the implanter comprises a snap block (380) and a button spring (390), the support base (310) comprises a snap block mounting groove (317), a snap limit groove (318) is formed in a side wall of the snap block mounting groove (317), and the bracket connecting rod (410) passes through the snap limit groove (318); the spring block (380) is arranged in the spring block mounting groove (317) and one end of the spring block extends out of the supporting seat (310); the button spring (390) connects the spring block (380) and the support base (310) and is used for applying a pressing force to the spring block (380) towards the bracket connecting rod (410).

8. The radioactive seed protection implanter according to claim 1, wherein the positioning groove (325) is provided on a side end surface of the rotating wheel (322) close to the supporting seat (310); and a second mounting hole for mounting the second ball plunger (370) is formed in the inner wall of one side, opposite to the positioning groove (325), of the supporting seat (310).

9. The radioactive seed protection implant of claim 8, wherein a distance assembly includes a pressure spring connecting the second ball plunger (370) with a second mounting hole.

10. The radioactive seed protection implant of claim 1, wherein the seed cartridge assembly (200) is detachably connected to the guard body (110) and forms a pushrod tunnel through the guard body (110); the front end of the protector body (110) is provided with a puncture needle interface (115), and when the protector body (110) is in butt joint with the radioactive seed puncture needle through the puncture needle interface (115), the push rod pore canal is coaxially communicated with the inner hole of the radioactive seed puncture needle to form the push rod channel.