Radioactive seed implantation positioning device and method of use thereof

Abstract

The application relates to a radioactive particle implantation positioning device and a use method thereof, which comprises a support plate and a U-shaped plate fixed on the support plate, longitudinal sliding mechanisms are arranged on the two sides of the U-shaped plate, a transverse sliding mechanism is arranged between the two longitudinal sliding mechanisms, a positioning assembly is arranged on the top of the transverse sliding mechanism, a first angle adjusting mechanism is arranged between the transverse and longitudinal sliding mechanisms, a second angle adjusting mechanism is arranged on the positioning assembly, and the first and second angle adjusting mechanisms are matched to facilitate the adjustment of the inclination angle of a puncture needle. The longitudinal sliding mechanism is arranged to realize longitudinal quantization positioning, the transverse sliding mechanism is arranged to realize transverse accurate positioning, the first and second angle adjusting mechanisms are matched to realize angle adjustment, the problem of insufficient manual adjustment precision of a traditional device is solved, the particle spacing and puncture point error are effectively avoided, the radioactive particles are uniformly arranged, the treatment precision of the radioactive particle implantation is improved from the positioning root, and the minimally invasive treatment effect is ensured.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a radioactive particle implantation positioning device and its usage method. Background Technology

[0002] Radioactive particle implantation is a mainstream minimally invasive technique for the clinical treatment of solid tumors. Precise positioning and puncture of radioactive particles are key to ensuring uniform particle distribution and guaranteeing treatment efficacy. The radioactive particle implantation positioning device, as a core positioning aid during the operation, is mainly used for directional guidance of puncture points and angles.

[0003] Traditional radioactive particle implantation positioning devices can only achieve single-point puncture positioning. Their position adjustment relies entirely on manual operation. The forward and backward and left and right displacements require repeated manual fine-tuning, which is not only cumbersome and inefficient, but also prone to errors in particle spacing and puncture point due to insufficient precision of manual adjustment, thus affecting the treatment effect. At the same time, the need for repeated disassembly and repositioning during multi-point punctures significantly prolongs the operation time and further increases the workload of doctors. Therefore, a radioactive particle implantation positioning device was designed. Summary of the Invention

[0004] The present invention improves upon the above-mentioned problems by providing a radioactive particle implantation and positioning device and its usage method to solve the problems mentioned in the background art.

[0005] The present invention is configured as follows: it includes a support plate and a U-shaped plate fixedly connected to the top surface of the support plate. Both sides of the U-shaped plate are provided with longitudinal sliding mechanisms, and a transverse sliding mechanism is provided between the two longitudinal sliding mechanisms. A positioning component for mounting a puncture needle is provided at the top of the transverse sliding mechanism. The longitudinal sliding mechanism drives the positioning component and the transverse sliding mechanism to move synchronously along the width direction of the U-shape. The transverse sliding mechanism drives the positioning component to move along the length direction of the U-shaped plate. A first angle adjustment mechanism is provided between the transverse sliding mechanism and the longitudinal sliding mechanism, and a second angle adjustment mechanism is provided on the positioning component. The cooperation of the first and second angle adjustment mechanisms facilitates convenient adjustment of the tilt angle of the puncture needle.

[0006] Furthermore, the longitudinal sliding mechanism includes two sliding grooves respectively opened on the two side walls of the U-shaped plate, and the bottom surfaces of the two sliding grooves are provided with multiple grooves at equal intervals; a slider is slidably connected in each of the two sliding grooves, and a rubber rod is fixedly connected to the bottom of each of the two sliders; the rubber rod is movably engaged in the groove to determine the puncture needle adjustment spacing; a semi-circular angle measuring plate is fixedly connected to the side wall of each of the two sliders that are close to each other.

[0007] Furthermore, the longitudinal sliding mechanism also includes a connecting plate 1 and a connecting plate 2 fixedly connected to one side wall of the U-shaped plate. A lead screw 1 is rotatably connected to both the connecting plate 1 and the connecting plate 2. A connecting block 1 is threaded onto the threaded surface of the lead screw 1. The side wall of the connecting block 1 is fixedly connected to the side wall of one of the sliders 1. A drive motor 1 is detachably installed on the outer wall of the connecting plate 2. The output end of the drive motor 1 is detachably connected to the end of the lead screw 1.

[0008] Furthermore, the first angle adjustment mechanism includes round rods disposed on one side wall of two semi-circular angle measuring plates close to each other. Each of the two round rods is rotatably sleeved with a connecting tube, and each of the connecting tubes is threaded with an abutment screw, the end of which is in movable contact with the surface of the round rod.

[0009] Furthermore, the lateral sliding mechanism includes a limiting frame, on which the puncture needle can slide to adjust its position. The limiting frame has a second sliding groove, and the bottom surface of the second sliding groove has multiple grooves at equal intervals. A second slider is slidably connected within the second sliding groove, and a second rubber rod is fixedly connected to the bottom surface of the second slider. The second rubber rod is movably engaged within the grooves. A vertical plate is fixedly connected to the top surface of the second slider, and the positioning component is mounted on the vertical plate.

[0010] Furthermore, the side wall of the limiting frame is fixedly connected to a connecting plate three and a connecting plate four, and a lead screw two is rotatably connected between the connecting plate three and the connecting plate four. A connecting block two is threaded onto the threaded surface of the lead screw two. The side wall of the connecting block two is fixedly connected to the side wall of the slider two. A drive motor two is detachably connected to the outer wall of the connecting plate three, and the output end of the drive motor two is detachably connected to the end of the lead screw two.

[0011] Furthermore, the positioning component includes a threaded tube, the top of which is vertically perforated with an installation hole and a long groove, and the installation hole and the long groove are connected. The puncture needle is detachably inserted into the installation hole. A fastening nut is threaded onto the threaded end of the threaded tube. The second angle adjustment mechanism includes an arc-shaped angle measuring plate, the front and rear walls of which are both provided with arc-shaped grooves. A sliding element is slidably connected in both arc-shaped grooves. The threaded tube is fixedly connected to one side wall of the sliding element.

[0012] Furthermore, a fastening bolt is threaded onto the side wall of the sliding member away from the threaded tube, and the threaded end of the fastening bolt movably abuts against the groove wall of the arc-shaped groove.

[0013] Furthermore, a guide plate is provided at one end of the arc-shaped angle measuring plate, with the arrow end of the guide plate pointing towards the semi-circular angle measuring plate.

[0014] Furthermore, the method of using the radioactive particle implantation positioning device includes the following: installing the puncture needle on the mounting hole of the threaded tube of the positioning component, and tightening the fastening nut to complete the quick clamping of the puncture needle; pushing the sliding component to slide along the arc groove, reading the angle value by referring to the semi-circular angle measuring plate through the guide plate, adjusting to the target angle, and then tightening the fastening bolt to lock; driving the transverse sliding mechanism and the positioning component to synchronously move longitudinally for positioning through the longitudinal sliding mechanism, and driving the positioning component to move laterally for positioning through the transverse sliding mechanism, thereby achieving triple precise control of the puncture needle position, spacing, and angle.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention achieves longitudinal quantitative positioning through the slide groove one, groove one and rubber rod one of the longitudinal sliding mechanism, and completes the transverse precise positioning through the slide groove two, groove two and rubber rod two of the transverse sliding mechanism. With the help of the semi-circular angle measuring plate and the arc angle measuring plate and guide plate of the positioning component, the angle is adjusted in coordination, which completely solves the problem of insufficient manual adjustment accuracy of the traditional device, effectively avoids the particle spacing and puncture point error, ensures the uniform distribution of radioactive particles, improves the treatment accuracy of radioactive particle implantation from the root of positioning, and ensures the effect of minimally invasive treatment. (2) The present invention drives the lead screw one and lead screw two to operate through the drive motor one and drive motor two respectively, realizes the longitudinal and transverse automatic displacement adjustment of the puncture needle, and with the quick clamping and angle locking structure of the positioning component, multi-point puncture does not require repeated disassembly and repositioning, greatly simplifies the operation process, shortens the operation time, significantly reduces the doctor's intraoperative operation load, and solves the pain points of cumbersome operation and low surgical efficiency of the traditional device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the longitudinal sliding mechanism according to an embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of the sliding plate according to an embodiment of the present invention; Figure 4 This is an embodiment of the present invention. Figure 3 A schematic diagram of the decomposed structure; Figure 5 This is a schematic diagram of the transverse sliding mechanism according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the transverse sliding mechanism from another perspective in an embodiment of the present invention; Figure 7 This is a schematic diagram of the positioning component according to an embodiment of the present invention; Figure 8 This is a structural schematic diagram of the positioning component from another perspective in an embodiment of the present invention.

[0017] The attached figures are labeled as follows: 1. Support plate; 2. U-shaped plate; 3. Positioning assembly; 31. Arc-shaped angle measuring plate; 32. Arc-shaped groove; 33. Sliding component; 34. Threaded pipe; 35. Fastening nut; 36. Mounting hole; 37. Long groove; 38. Guide plate; 39. Fastening bolt; 4. Longitudinal sliding mechanism; 41. Connecting plate one; 42. Connecting plate two; 43. Drive motor one; 44. Lead screw one; 45. Slide groove one; 46. Slide... 47. Connecting Block 1; 48. Semicircular Angle Measuring Plate; 49. Rubber Rod 1; 401. Groove 1; 402. Connecting Pipe; 403. Abutting Screw; 5. Lateral Sliding Mechanism; 51. Limiting Frame; 52. Slide Groove 2; 53. Slider 2; 54. Groove 2; 55. Rubber Rod 2; 56. Vertical Plate; 57. Connecting Plate 3; 58. Connecting Plate 4; 59. Lead Screw 2; 501. Connecting Block 2; 502. Drive Motor 2. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Example

[0019] Please see Figures 1 to 4 The present invention provides a radioactive particle implantation positioning device, including a support plate 1 and a U-shaped plate 2 fixedly connected to the top surface of the support plate 1. A longitudinal sliding mechanism 4 is provided on both sides of the U-shaped plate 2, and a transverse sliding mechanism 5 is provided between the two sides of the U-shaped plate 2. A positioning component 3 for installing a puncture needle is provided on the top of the transverse sliding mechanism 5. The longitudinal sliding mechanism 4 provides longitudinal directional displacement drive for the puncture needle, replacing manual longitudinal fine adjustment, and is used to drive the positioning component 3 and the transverse sliding mechanism 5 to move longitudinally on the U-shaped plate 2. The lateral sliding mechanism 5 provides lateral directional displacement drive for the puncture needle, replacing manual lateral fine adjustment, and is used to drive the positioning component 3 to move laterally on the U-shaped plate 2. The longitudinal sliding mechanism 4 includes two sliding grooves 45 respectively opened on the two side walls of the U-shaped plate 2, and the bottom surfaces of the two sliding grooves 45 are provided with multiple grooves 401 at equal intervals. The chute 45 provides guidance for longitudinal displacement, and the equidistant groove 401 realizes the quantitative positioning of the longitudinal spacing, avoiding the spacing error of manual adjustment. Slider 46 is slidably connected in both slide grooves 45, and rubber rod 49 is fixedly connected to the bottom of both sliders 46; rubber rod 49 and groove 401 cooperate to form elastic snap-fit ​​positioning, ensuring that the position is stable and without deviation after longitudinal adjustment. The rubber rod 49 is movably engaged in the groove 401 to determine the puncture needle adjustment spacing; the two sliders 46 are fixedly connected to the side walls of their close proximity with a semi-circular angle measuring plate 48. The semi-circular angle measuring plate 48 provides a reference scale for adjusting the angle of the puncture needle, and works with the positioning component 3 to achieve precise angle calibration. The semi-circular angle measuring plate 48 and the positioning component 3 are used to adjust the tilt angle of the puncture needle.

[0020] In practice In use, the support plate 1 is first fixed in the surgical position. The longitudinal sliding mechanism 4 drives the slider 46 to move longitudinally along the groove 45. The rubber rod 49 is inserted into different grooves 401 in sequence, which quickly and quantitatively sets the longitudinal spacing of the puncture needle without the need for repeated manual fine-tuning. The semi-circular angle measuring plate 48 moves synchronously with the slider 46 to provide a fixed reference for subsequent angle adjustment, thereby reducing longitudinal positioning error from the source and improving the consistency of spacing of multi-point puncture. Example

[0021] Please see Figures 2 to 6 Based on Embodiment 1, the longitudinal sliding mechanism 4 further includes a connecting plate 41 and a connecting plate 42 fixedly connected to one side wall of the U-shaped plate 2. A lead screw 44 is rotatably connected to the connecting plate 41 and the connecting plate 42. A connecting block 47 is threaded onto the threaded surface of the lead screw 44. The side wall of the connecting block 47 is fixedly connected to the side wall of one of the sliders 46. A drive motor 43 is detachably installed on the outer wall of the connecting plate 42. The output end of the drive motor 43 is detachably connected to the end of the lead screw 44. The drive motor 43 drives the lead screw 44 to rotate, and drives the slider 46 to move smoothly longitudinally through the connecting block 47, realizing automated longitudinal adjustment and reducing the manual operation load; The first angle adjustment mechanism includes round rods disposed on two semi-circular angle measuring plates close to each other on one side wall. A connecting tube 402 is rotatably sleeved on each of the two round rods. Abutting screw 403 is threadedly connected to the wall of each of the two connecting tubes 402, and the end of the abutting screw 403 is in movable contact with the surface of the round rod. The connecting tube 402 can rotate around the round rod, realizing the overall angular deflection of the transverse sliding mechanism 5. After the screw 403 is tightened, the angle is locked to prevent angular deviation during the operation. The lateral sliding mechanism 5 includes a limiting frame 51 fixedly connected between two connecting tubes 402. The limiting frame 51 provides stable support for lateral displacement, ensuring that the puncture needle does not shake when it is adjusted laterally. The puncture needle slides on the limiting frame 51 to adjust the position of the puncture needle. The limiting frame 51 has a sliding groove 52, and the bottom surface of the sliding groove 52 has multiple grooves 54 at equal intervals. The sliding groove 52 guides the lateral displacement, and the grooves 54 at equal intervals realize the lateral spacing quantitative positioning to match the uniform arrangement requirements of particle implantation. Sliding slider 2 53 is slidably connected inside sliding groove 2 52. Rubber rod 2 55 is fixedly connected to the bottom surface of sliding slider 2 53. Rubber rod 2 55 is elastically engaged with groove 2 54 and automatically locks after lateral positioning, without the need for additional fixing. Rubber rod 2 55 is movably engaged in groove 2 54. A vertical plate 56 is fixedly connected to the top surface of slider 2 53. A connecting plate 3 57 and a connecting plate 4 58 are fixedly connected to the side wall of the limiting frame 51. A lead screw 2 59 is rotatably connected between connecting plate 3 57 and connecting plate 4 58. A connecting block 2 501 is threaded onto the threaded surface of lead screw 2 59. The side wall of connecting block 2 501 is fixedly connected to the side wall of slider 2 53. A drive motor 2 502 is detachably connected to the outer wall of connecting plate 3 57. The output end of drive motor 2 502 is detachably connected to the end of lead screw 2 59. The drive motor 2 502 drives the lead screw 2 59 to rotate, which in turn drives the slider 2 53 to move laterally through the connecting block 2 501, thereby realizing automated lateral adjustment and shortening the operation time.

[0022] In practice Start drive motor 43, which drives lead screw 44 to rotate via its output. The rotation of lead screw 44 causes connecting block 47 and slider 46 to complete longitudinal automatic displacement. After adjustment, rubber rod 49 is positioned by engaging groove 401. Rotate connecting tube 402 to adjust the overall angle of transverse sliding mechanism 5. Tighten abutment screw 403 to lock the angle. Start drive motor 502, which drives lead screw 59 to rotate via its output. The rotation of lead screw 59 causes slider 53 to move laterally along slide groove 52. Rubber rod 55 engages in groove 54 to complete transverse quantitative positioning. No manual disassembly and repositioning is required throughout the process, greatly improving surgical efficiency and positioning accuracy. Example

[0023] Please see Figures 7 to 8 Based on the above embodiments, the positioning component 3 includes an arc-shaped angle measuring plate 31 fixedly connected to the top of the vertical plate 56. The front and rear walls of the arc-shaped angle measuring plate 31 are provided with arc-shaped grooves 32. A sliding member 33 is slidably connected in both arc-shaped grooves 32. The arc-shaped grooves 32 provide arc-shaped guidance for fine adjustment of the puncture needle angle. The sliding member 33 slides along the arc-shaped grooves 32 to achieve fine angle adjustment. The arc-shaped angle measuring plate, arc-shaped groove, sliding component, and threaded tube constitute the second angle adjustment mechanism.

[0024] A threaded tube 34 is fixedly connected to one side wall of the sliding member 33. The top of the threaded tube 34 is vertically provided with a mounting hole 36 and a long groove 37, and the mounting hole 36 and the long groove 37 are connected. The mounting hole 36 is used for the insertion and positioning of the puncture needle, and the long groove 37 provides deformation space for fastening and clamping. The puncture needle is detachably inserted into the mounting hole 36. The threaded end of the threaded tube 34 is threaded with a fastening nut 35. Tightening the fastening nut 35 can retract the threaded tube 34 and quickly clamp the puncture needle, making installation and removal convenient. The sliding part 33 is threaded with a fastening bolt 39 on the side wall away from the threaded tube 34. The threaded end of the fastening bolt 39 is in movable contact with the groove wall of the arc groove 32. Tightening the fastening bolt 39 can lock the position of the sliding part 33, ensuring that the puncture needle is stable and does not wobble after the angle is finely adjusted. A guide plate 38 is provided at one end of the arc-shaped angle measuring plate 31. The arrow end of the guide plate 38 faces the semi-circular angle measuring plate 48. The guide plate 38, together with the semi-circular angle measuring plate 48, enables intuitive reading of angle values ​​and ensures accurate angle adjustment.

[0025] In addition, the top of the limiting frame is provided with a through groove to avoid the vertical plate, and the vertical plate can be guided to move along the length of the through groove. The limiting frame 51 is provided with an avoidance groove on the side near the lead screw 2 to avoid the movement of the connecting block 2.

[0026] In practice Insert the puncture needle into the mounting hole 36 of the threaded tube 34, tighten the fastening nut 35 to complete the quick clamping of the puncture needle, push the sliding part 33 to slide along the arc groove 32, read the angle value by referring to the semi-circular angle measuring plate 48 through the guide plate 38, adjust to the target angle and tighten the fastening bolt 39 to lock. Combined with the automatic positioning of the longitudinal and transverse sliding mechanism, the triple precision control of the puncture needle position, spacing and angle is realized, which completely solves the problems of large manual adjustment error and cumbersome operation of traditional devices, and ensures uniform distribution of radioactive particles and treatment effect.

[0027] Unless otherwise stated, if any of the technical solutions disclosed in this invention specify a numerical range, then the disclosed numerical range is a preferred numerical range. Anyone skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this invention discloses only some numerical values ​​to illustrate the technical solutions of this invention. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this invention.

[0028] If the terms "first" or "second" are used in this document to specify components, those skilled in the art should know that the use of "first" or "second" is merely for the purpose of distinguishing components in description, and unless otherwise stated, the above terms have no special meaning.

[0029] Furthermore, if the present invention discloses or relates to mutually fixedly connected components or structural parts, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral molding process).

[0030] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0031] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A radioactive particle implantation positioning device, comprising a support plate (1) and a U-shaped plate (2) fixedly connected to the top surface of the support plate, characterized in that, Both sides of the U-shaped plate are provided with longitudinal sliding mechanisms (4), and a transverse sliding mechanism (5) is provided between the two longitudinal sliding mechanisms. The top of the transverse sliding mechanism is provided with a positioning component (3) for installing the puncture needle. The longitudinal sliding mechanism is used to drive the positioning component and the transverse sliding mechanism to move synchronously along the width direction of the U-shape. The transverse sliding mechanism is used to drive the positioning component to move along the length direction of the U-shaped plate. A first angle adjustment mechanism is provided between the transverse sliding mechanism and the longitudinal sliding mechanism. A second angle adjustment mechanism is provided on the positioning component. The cooperation of the first and second angle adjustment mechanisms facilitates the adjustment of the tilt angle of the puncture needle.

2. The radioactive particle implantation and positioning device according to claim 1, characterized in that, The longitudinal sliding mechanism (4) includes two sliding grooves (45) respectively opened on the two side walls of the U-shaped plate (2). The bottom surfaces of the two sliding grooves (45) are provided with multiple grooves (401) at equal intervals. Slider (46) is slidably connected in the two sliding grooves (45), and rubber rod (49) is fixedly connected to the bottom of the two sliders (46). The rubber rod (49) is movably engaged in the groove (401) and is used to determine the puncture needle adjustment spacing. Semicircular angle measuring plates (48) are fixedly connected to the side walls of the two sliders (46) that are close to each other.

3. The radioactive particle implantation and positioning device according to claim 2, characterized in that, The longitudinal sliding mechanism (4) further includes a connecting plate one (41) and a connecting plate two (42) fixedly connected to one side wall of the U-shaped plate (2). A lead screw one (44) is rotatably connected to the connecting plate one (41) and the connecting plate two (42). A connecting block one (47) is threaded onto the threaded surface of the lead screw one (44). The side wall of the connecting block one (47) is fixedly connected to the side wall of one of the sliders one (46). A drive motor one (43) is detachably installed on the outer wall of the connecting plate two (42). The output end of the drive motor one (43) is detachably connected to the end of the lead screw one (44).

4. The radioactive particle implantation and positioning device according to claim 2, characterized in that, The first angle adjustment mechanism includes round rods disposed on two semi-circular angle measuring plates close to each other on one side wall. A connecting tube (402) is rotatably sleeved on each of the two round rods. An abutment screw (403) is threadedly connected to the wall of each of the two connecting tubes (402), and the end of the abutment screw (403) is in movable contact with the surface of the round rod.

5. The radioactive particle implantation and positioning device according to claim 1, characterized in that, The transverse sliding mechanism includes a limiting frame (51), on which the puncture needle can slide to adjust its position. The limiting frame (51) has a second sliding groove (52), and the bottom surface of the second sliding groove (52) has multiple grooves (54) equidistantly arranged. A second slider (53) is slidably connected in the second sliding groove (52), and a second rubber rod (55) is fixedly connected to the bottom surface of the second slider (53). The second rubber rod (55) is movably engaged in the groove (54). A vertical plate (56) is fixedly connected to the top surface of the second slider (53), and the positioning component is set on the vertical plate.

6. The radioactive particle implantation and positioning device according to claim 5, characterized in that, The side wall of the limiting frame (51) is fixedly connected to a connecting plate three (57) and a connecting plate four (58). The connecting plate three (57) and the connecting plate four (58) are rotatably connected to a lead screw two (59). The threaded surface of the lead screw two (59) is threaded with a connecting block two (501). The side wall of the connecting block two (501) is fixedly connected to the side wall of the slider two (53). The outer wall of the connecting plate three (57) is detachably connected to a drive motor two (502). The output end of the drive motor two (502) is detachably connected to the end of the lead screw two (59).

7. The radioactive particle implantation and positioning device according to claim 1, characterized in that, The positioning component (3) includes a threaded tube (34), the top of which is vertically provided with an installation hole (36) and a long groove (37), and the installation hole (36) and the long groove (37) are connected. The puncture needle is detachably inserted into the installation hole (36). The threaded end of the threaded tube (34) is threaded with a fastening nut (35). The second angle adjustment mechanism includes an arc-shaped angle measuring plate (31), the front and rear walls of which are provided with arc-shaped grooves (32). A sliding member (33) is slidably connected in both arc-shaped grooves (32). The threaded tube is fixedly connected to one side wall of the sliding member (33).

8. The radioactive particle implantation and positioning device according to claim 7, characterized in that, The sliding member (33) has a fastening bolt (39) threaded on the side wall away from the threaded tube (34), and the threaded end of the fastening bolt (39) is in contact with the groove wall of the arc groove (32).

9. The radioactive particle implantation and positioning device according to claim 8, characterized in that, One end of the arc-shaped angle measuring plate (31) is provided with a guide plate (38), and the arrow end of the guide plate (38) faces the semi-circular angle measuring plate (48).

10. A method of using the radioactive particle implantation and positioning device as described in claim 9, characterized in that, The process includes the following steps: installing the puncture needle into the mounting hole of the threaded tube of the positioning component, and tightening the fastening nut to complete the quick clamping of the puncture needle; pushing the sliding component to slide along the arc groove, reading the angle value by referring to the semi-circular angle measuring plate through the guide plate, adjusting to the target angle, and then tightening the fastening bolt to lock it; driving the transverse sliding mechanism and the positioning component to move longitudinally and positioning synchronously through the longitudinal sliding mechanism, and driving the positioning component to move laterally through the transverse sliding mechanism to achieve triple precise control of the puncture needle position, spacing, and angle.

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