An implant template

Abstract

This invention relates to the field of medical devices, and particularly to an implantation template. The application includes a template body and a plurality of access mechanisms disposed on the template body. Each access mechanism includes a hollow access pipe. An applicator is assembled inside the access pipe, and the access pipe can rotate relative to the template body under external force. When the access pipe rotates, the angle of the access pipe can be changed. Compared with the prior art, this invention improves the fixed applicator insertion angle of the original template to be freely adjustable and reusable, reducing surgical costs and broadening its applicability.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to an implantation template. Background Technology

[0002] Cervical cancer is the fourth most diagnosed cancer worldwide and the fourth leading cause of cancer death among women. One of the more widely used treatments is brachytherapy, a form of radiation therapy that places the radiation source inside or near the site of treatment. Because it delivers a high absorbed dose to the tumor tissue, and due to the rapid attenuation of the absorbed dose, brachytherapy avoids the high doses to the bladder, rectum, and sigmoid colon, reducing the toxicity to normal organs near the cancerous area during treatment. Furthermore, image-based conformal brachytherapy improves local control, achieving a 3-year local control rate of over 90% even in advanced stages of the disease.

[0003] Brachytherapy is divided into intracavitary brachytherapy and interstitial brachytherapy. Traditional intracavitary brachytherapy involves placing an applicator within a natural lumen of the body for radiation therapy. Because this method is non-invasive and easily tolerated by patients, it has become the most commonly used type of brachytherapy for cervical cancer. However, for patients with anatomical abnormalities such as vaginal stenosis, uterine asymmetry, unilateral tumor involvement, or parametrial invasion greater than 5mm, traditional intracavitary brachytherapy often fails to completely cover the target area, resulting in poor dose distribution and thus affecting the patient's treatment outcome.

[0004] Insertion therapy is a treatment method that involves inserting an implant into the lesion or surrounding tissue via a perineal template or vaginal approach. In gynecological brachytherapy, insertion therapy is a superior alternative to endovascular techniques, especially for large cervical / vaginal tumors with extensive parametrial involvement (greater than 0.5 cm thick), severe vaginal involvement, invasion of the bladder or rectum, recurrence after hysterectomy, or after previous pelvic external beam radiation therapy, or for patients with abnormal vaginal anatomy. Insertion therapy significantly improves local control and reduces radiation side effects. However, insertion therapy also has some drawbacks. Using a perineal template for insertion causes greater patient trauma; general anesthesia increases medical expenses; and due to the limited field of vision, the implantation needle placement is often inaccurate. Manual insertion carries a higher risk of perforation and bleeding; repeated needle adjustments increase patient suffering and radiation exposure; and poor repeatability of each insertion, with needle distribution deviation leading to dose distribution errors, further complicates the process.

[0005] 3D printing technology has wide applications in clinical medicine, and it has long been used in brachytherapy for malignant tumors. In the past two years, researchers have combined 3D printing technology with implantation therapy to create 3D-printed personalized implantation templates for application in the brachytherapy of gynecological tumors. These personalized templates ensure good dose distribution within the target area while completely avoiding surrounding organs at risk. This allows for precise needle insertion and accurate treatment, guaranteeing complete coverage of the target area, reducing the radiation dose to organs at risk, and avoiding the need for multiple CT scans during implantation. This significantly shortens the surgical time and substantially reduces patient pain and radiation dose.

[0006] Current 3D printing implantation techniques involve pre-scanning to delineate the target area during template fabrication. The direction and depth of the implantation needle are then determined based on the target area's location. The treating physician uses 3D software to generate a 3D image of the vaginal contour and the needle, and finally uses a 3D printer to print a personalized implantation template containing the needle path. However, research has found that this personalized implantation template with needle paths lacks reusability for different patients or different stages of the same patient. The needle paths in older implantation templates are directly created on the template material and lack adjustability, thus failing to guide the applicator to different directions for implantation. Therefore, this existing 3D printing implantation technique cannot effectively reduce the cost for patients in terms of implantation template materials.

[0007] In summary, there is currently a lack of an implantation template that can combine 3D printing implantation therapy technology with improvements to the needle path of the implantation template, making the part guiding the applicator angle adjustable. Summary of the Invention

[0008] The purpose of this application is to provide an implantation template. This template has an access pipe fitted with an applicator, and the access pipe can be rotated as needed to accommodate different angle guidance requirements of the applicator. This implantation template can be repeatedly used during treatment, effectively reducing treatment costs.

[0009] To achieve the above objectives, an embodiment of the present invention provides an insertion template, comprising: a template body and a plurality of access mechanisms disposed on the template body;

[0010] The access mechanism includes:

[0011] An access pipe passes through two opposite surfaces of the template body. The access pipe is hollow to allow the puncture needle of the applicator to be inserted. The access pipe can rotate relative to the template body under the action of external force to change the angle in which the access pipe faces.

[0012] Compared with the prior art, the embodiments of this application add several access mechanisms, wherein the applicator is inserted into the hollow pipe of the access pipe and the access pipe is rotated by external force, thereby realizing the control of the insertion angle of the applicator.

[0013] As a further improvement, the access mechanism further includes: a support base disposed on the template body; the access pipe is connected to the support base and passes through the template body.

[0014] As a further improvement, the access pipe includes: a pipe body and a connecting portion disposed on the outer wall of the pipe body, wherein the outer wall of the connecting portion is formed as part of a sphere;

[0015] The support base is provided with a matching hole for the connecting part, and the connecting part is inserted into the hole to rotate relative to the support base.

[0016] As a further improvement, the access mechanism further includes a locking component, which is connected to the support base and used to lock the angle of the access pipe.

[0017] As a further improvement, the locking component includes:

[0018] A locking through hole is provided on the support base, and the two ends of the locking through hole are respectively connected to the inner wall of the embedded hole and the outer wall of the support base. At least a portion of the inner wall of the locking through hole is provided with threads.

[0019] A set screw, which is screwed into the set through hole and forms a retaining force against the connecting part.

[0020] As a further improvement, the outer wall of the support base has an inclined surface, and the angle between the inclined surface and the surface of the template body on which the support base is located is an acute angle, and the fixing through hole is located on the inclined surface.

[0021] As a further improvement, the locking through hole includes a first hole section and a second hole section that are connected to each other. The first hole section is connected to the inner wall of the recessed hole, and the second hole section is connected to the outer wall of the support base.

[0022] The angle between the first hole segment and the second hole segment is less than 180 degrees, and the thread is provided in the second hole segment;

[0023] The fastening component further includes a fastening strip disposed within the first hole section, wherein the fastening screw is screwed into the second hole section and abuts the connecting portion by pushing the fastening strip located in the first hole section.

[0024] As a further improvement, the angle between the first hole segment and the second hole segment is equal to 90 degrees, and the tail end of the fastening strip has an inclined surface facing the second hole segment.

[0025] As a further improvement, the planting template also includes:

[0026] The base is mounted on the main body of the template;

[0027] The template body has an assembly hole on the side opposite to the base side;

[0028] The diameter range of the assembly holes is 5 mm to 50 mm.

[0029] The access mechanism is disposed between the mounting hole and the base.

[0030] As a further improvement, the template body is made of any of the following materials: metallic materials, polymeric materials, and inorganic non-metallic materials;

[0031] The edges of the main body of the template are chamfered.

[0032] The number of access institutions ranges from 4 to 15.

[0033] The access mechanisms are arranged in a matrix on the template body;

[0034] The hollow inner diameter of the access pipe ranges from 0.1 mm to 5 mm;

[0035] The length of the access pipe ranges from 1 cm to 5 cm.

[0036] Compared with the prior art, the beneficial effects of this application are as follows: First, it reduces surgical costs: In this application, by installing several access mechanisms on the template rope, the controllability of the applicator guide angle is achieved; compared with the prior art's one-time use of the template, the cost is greatly reduced; Second, it increases the tolerance for angle settings: In the prior art, simulating the opening of the applicator guide hole on the template body is an irreversible process; if there is a similar parameter adjustment error, the entire template body will be scrapped; In this application, after the angle of the applicator is adjusted incorrectly, it can be fine-tuned again on the basis of the previous adjustment, increasing the tolerance for errors in the adjustment process. Attached Figure Description

[0037] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0038] The reference numerals and names in the figure are as follows:

[0039] Figure 1 This is a three-dimensional structural diagram of the insertion template provided in the first embodiment of this application;

[0040] Figure 2 This is a three-dimensional structural diagram of the insertion template provided in the second embodiment of this application;

[0041] Figure 3 This is a three-dimensional structural diagram of the insertion template from another angle provided in the second embodiment of this application;

[0042] Figure 4 This is a schematic diagram of the assembly of multiple access mechanisms of the insertion template provided in the second embodiment of this application;

[0043] Figure 5 This is a schematic cross-sectional view of the assembly of multiple access mechanisms provided in the second embodiment of this application;

[0044] Figure 6 yes Figure 5 Enlarged schematic diagram of the assembly of the access mechanism at point A;

[0045] Figure 7 This is an exploded view of the access mechanism in the second embodiment of the application;

[0046] Figure 8 yes Figure 1 A partially enlarged schematic diagram of the access mechanism assembly provided at point B;

[0047] Figure 9 This is a schematic cross-sectional view of the entry mechanism assembly in the first embodiment of this application;

[0048] Figure 10 This is an exploded view of the set screw and set bar in the second embodiment of this application;

[0049] Figure 11 This is a cross-sectional assembly diagram of the set screw and set bar in the second embodiment of this application;

[0050] Figure 12 This is a schematic cross-sectional view of the overall assembly of the access mechanism in the second embodiment of this application;

[0051] Figure 13 yes Figure 12 A magnified view of a portion of point C.

[0052] 1. Template body; 2. Access mechanism;

[0053] 11. Base; 12. Assembly hole; 21. Pipe connection; 22. Support base; 23. Fastening component;

[0054] 211. Pipe body; 212. Connecting part; 221. Embedded hole; 222. Bevel; 231. Set hole; 232. Set screw; 233. Set bar;

[0055] 2311, First hole section; 2312, Second hole section; 2321, Second inclined surface; 2322, Propulsion part; 2323, Spiral part; 2331, First inclined surface; 2332, Return spring. Detailed Implementation

[0056] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0057] Chinese invention patent application number 201420215083.1 discloses an implantable needle applicator template. This template is an integral structure including a front face, a rear face, and a support column connecting the front and rear faces. The front and rear faces are parallel. Multiple needle holes, parallel to each other and of equal length, are evenly distributed on the template, penetrating both the front and rear faces. This invention provides an implantable needle channel, offering excellent support for the needle's movement. The travel distance of the needle can be accurately determined by the template length, controlling its insertion depth. The insertion position of the needle can be controlled by the channel position on the template, greatly improving the accuracy of needle implantation and providing strong support for the treatment of cervical cancer.

[0058] A comparison with this application reveals that the needle insertion path of the implantation needle applicator template in the aforementioned application documents is fixed, and the insertion angle of the applicator cannot be changed. Furthermore, each applicator can only be inserted in a straight position by changing its insertion location, and cannot be modified for different lesion areas, thus limiting its effectiveness.

[0059] Chinese utility model patent application number 201921537818.1 discloses an implantation template with a locking needle function, including an implantation template, a first connecting strap, and a second connecting strap. One end of the first connecting strap is connected to the first end of the implantation template, one end of the second connecting strap is connected to the second end of the implantation template, and the other end of the first connecting strap is inserted into the other end of the second connecting strap. A locking needle mechanism is installed on the implantation template. This utility model's implantation template with a locking needle function can lock and fix the implantation needle on the implantation template while ensuring safe, convenient, and effective needle placement, thus ensuring the quality of brachytherapy and solving the problems of unstable fixation and needle swaying in existing implantation templates.

[0060] The locking mechanism described in this patent is designed to tighten the implantation needles that have entered the needle channel. However, the fixed needle channel on the implantation template cannot control or adjust the insertion angle of the implantation needle, and therefore cannot meet the requirements for the insertion angle of the implantation needle in different cases.

[0061] In summary, this application provides an insertion template to meet the requirements for controlling the insertion angle of the applicator insertion needle.

[0062] Implementation Method 1

[0063] In the first embodiment of this application, as Figure 1 , Figure 2 , Figure 3 As shown, an insertion template is provided, including: template body 1 and several access mechanisms 2.

[0064] The template body 1 serves as the overall skeleton of the template, providing a framework for assembling other components and ensuring they meet basic usage requirements under various conditions. The material is typically martensitic stainless steel. In this embodiment, several access mechanisms 2 are mounted on the template body 1. During the assembly of the access mechanisms 2 with the template body 1, the attending physician will frequently come into contact with the template body 1. To prevent cuts to the patient and physician from the edges of the template body 1 during use, the edges of the template body 1 can be chamfered in this embodiment.

[0065] More specifically, the implantation template may further include: a base 11 disposed at the bottom of the template body 1 and an assembly hole 12 disposed at the top of the template body 1. In this embodiment, the base 11 is a flat support leg, and there are no fewer than two of them, forming a certain angle with the plane of the template body 1. Typically, the perineum or vagina is the site where the implantation needle is inserted; during implantation treatment, the patient spreads their legs, exposing the perineum or vagina to the outside world. The base 11 contacts the operating table, positioning the template body 1 at a certain angle towards the patient's perineum or vagina. This makes the access mechanism 2 mounted on the template body 1 more convenient for subsequent treatment.

[0066] The base 11 alone serves only as support for the template body 1, and cannot reliably guarantee the stability of the implanted template during treatment. Therefore, in this embodiment, an assembly hole 12 is provided at the top of the template body 1. The assembly hole 12 uses a hole as an assembly connection feature, which has the advantages of simple processing, fewer restrictions on assembly objects, and flexible assembly with various objects (e.g., hole-like structures, groove-like structures, bolt-like structures). In this embodiment, the size of the assembly hole 12 is selected between 5 mm and 50 mm to allow the use of different types of fastening bolts. The access mechanism is located between the assembly hole and the base.

[0067] In practical applications, the number of applicators required for implantation treatment is generally limited to 12 or fewer. Considering some extreme cases, in this embodiment, the total number of access mechanisms 2 on the template body 1 ranges from 4 to 15. Since the insertion area of ​​the applicators into the human body is usually relatively concentrated, to facilitate control and adjustment of each access mechanism 2, the access mechanisms 2 within this range can be arranged in a matrix or ring pattern to ensure even distribution on the surface of the template body 1.

[0068] The access mechanism 2 may include an access conduit 21. Traditional implantation therapy involves using 3D printing software to outline the patient's target area on an implantation template. The physicist and attending physician then set the direction of the applicator based on the target area, and finally, a needle path with a corresponding angle is set on the implantation board according to the implantation direction. In this embodiment, an access conduit 21 replaces the needle path of traditional therapy. The access conduit 21 itself can be a hollow conduit, with an inner diameter ranging from 0.1 mm to 5 mm and a length ranging from 1 cm to 5 cm. The access conduit 21 passes through the template body, with its two ends exposed on two surfaces. The applicator is assembled inside the access conduit 21 through the hollow conduit. Since the access conduit 21 can rotate relative to the template body 1 under external force, the angle facing the access conduit 21 changes. Because the applicator is assembled inside the access conduit 21, its rotation angle is equal to the rotation angle of the access conduit 21, resulting in a change in the angle of insertion of the applicator. This achieves the purpose of adjusting the insertion direction of the applicator by controlling the rotation of the access conduit 21.

[0069] Specifically, such as Figure 4 Therefore, in this embodiment, the access mechanism 2 may further include a support base 22, which serves as a connection carrier between the access pipe 21 and the template body 1. That is, the access pipe 21 is connected to the template body 1 via the support base 22. The support base 22 passes through two opposite surfaces of the template body 1 and is fixedly connected to it. The access pipe 21 is rotatably mounted on the support base 22.

[0070] To facilitate the insertion of the uterine tube, a uterine cavity hole for inserting the uterine tube is provided on the surface of the template body 1 of the access mechanism 2.

[0071] It needs to be explained in detail, such as Figure 7 and Figure 9As shown, since the rotation of the access pipe 21 relative to the template body 1 is the result of surface-to-surface interaction under external force, to reduce wear between the two surfaces, an embedded hole 221 is provided inside the support base 22. Correspondingly, the access pipe 21 may also include: a pipe body 211 and a connecting part 212 provided on the outer wall of the pipe body 211. The outer wall of the connecting part 212 is formed as part of a sphere, which is embedded in the embedded hole 221, allowing the access pipe 21 to rotate relative to the support base 22. This transforms the rotation of the access pipe 21 relative to the template body 1 into a relative rotation between the connecting part 212 and the embedded hole 221. Since the friction surface between the connecting part 212 and the embedded hole 221 is curved, the surface-to-surface collision between the connecting part 212 and the embedded hole 221 is reduced when the connecting part 212 rotates, thus reducing wear.

[0072] Based on the above institutions, such as Figure 8 and Figure 9 As shown, the access mechanism 2 may further include a locking component 23, which is used by the user to actively lock the rotation of the access pipe 21. After the locking component 23 locks the access pipe 21, the applicator can remain stable when inserted into the access pipe 21. The locking component 23 is mounted on the support base 22.

[0073] More specifically, the locking component 23 may further include: a locking through hole 231 disposed on the support base 22, and a locking screw 232 threadedly connected to the locking through hole 231; the locking through hole 231 extends through the inner wall of the recessed hole 221 and the outer wall of the support base 22, and the locking screw 232 holds the connecting portion 212 in the recessed hole 221 by screwing into the locking through hole 231; the process of locking the connecting portion 212 by the locking component 23 is relatively simple and suitable for rapid operation during surgery. After holding the connecting portion 212, the portion of the locking screw 232 exposed in the locking through hole 231 is fixed to the support base 22 by a nut.

[0074] It is worth mentioning that, such as Figure 8 and Figure 9 As shown, to allow the set screw 232 to naturally screw into the set through hole 231 and better support the connecting part 212, the outer wall of the support base 22 is a slope 222, and the angle between the slope 222 and the surface of the template body 1 where the support base 22 is located is an acute angle, with the set through hole 231 located on the slope 222. In this way, when the set screw 232 naturally screws in, the tail of the set screw 232 faces the center of the ball in the recess 221, resulting in a larger contact area between the tail of the set screw 232 and the connecting part 212. This increases the frictional force when the set screw 232 and the connecting part 212 are engaged, further ensuring the stability of the guide pipe 21 for the applicator. In actual use, a bent electric screwdriver can be used to quickly tighten the nut installed on the slope 222.

[0075] Example 2

[0076] The inventors of this application discovered that while the set screw 232 increases the friction between the set screw 232 and the connecting part 212 when it naturally screws into the set through hole 231 located on the inclined surface 222 to hold the connecting part 212, the angle between the inclined surface 222 and the surface of the template body 1 where the support base 22 is located is an acute angle. After holding the connecting part 212, when the physician fixes the set screw 232 to the support base 22 with nuts, it is inconvenient to frequently change the angle and tighten multiple nuts.

[0077] In view of this situation, a second embodiment of this application provides an insertion template. The second embodiment is a further improvement of the first embodiment, and its main improvement is that, in the second embodiment of this application, see [link to relevant documentation]. Figure 5 As shown in Figure 7, the set hole 231 may include a first segment 2311 and a second segment 2312 that are interconnected. The first segment 2311 communicates with the inner wall of the recess 221, and the second segment 2312 communicates with the outer wall of the support base 22. Correspondingly, the set member 23 may also include a set strip 233. By dividing the set hole 231 into two segments, the set screw 232, which was originally inserted at an angle, can be inserted vertically, which will improve the ease of operation of the set screw 232. Specifically, the set strip 233 is disposed in the first segment 2311, while the set screw 232 is screwed into the second segment 2312. During the screwing-in process of the set screw 232, the set screw 232 pushes the set strip 233 located in the first segment 2311, so that the set strip 233 abuts against the connecting part 212.

[0078] Specifically, in this second embodiment, as Figure 5 and Figure 6 As shown, the angle between the first hole segment 2311 and the second hole segment 2312 is equal to 90 degrees, and the tail end of the set screw 233 has a first inclined surface 2331 facing the second hole segment. Thus, during the screwing of the set screw 232, the bottom of the set screw 232 contacts the inclined surface of the tail end of the set screw 233, pushing the set screw 233 toward the connecting part 212, so that the other end face of the set screw 233 facing the connecting part 212 can establish a resisting relationship with the connecting part 212.

[0079] It should be noted in detail that the shape of the retaining strip 233 is determined by the shape of the first hole segment 2311. For example, if the first hole segment 2311 has a square cross-section, then the retaining strip 233 is a cuboid. However, in this embodiment, the first hole segment 2311 has a circular cross-section, and the retaining strip 233 is a cylinder. Considering that both, and even more shapes, can achieve the restraining effect of the retaining strip 233 on the connecting part 212, this embodiment does not specifically limit the shape of the first hole segment 2311 or the retaining strip 233.

[0080] Furthermore, such as Figures 10 to 13 To further match the tail end of the setter bar 233 having a first inclined surface 2331 facing the second hole segment, a second inclined surface 2321 is provided on the end face of the setter screw 232 facing the setter bar 233. When the setter screw 232 rotates down to push the setter bar 233, the first inclined surface 2331 and the second inclined surface 2321 come into contact. In this embodiment, the slopes of the two inclined surfaces are the same, allowing the setter bar 233 to be pushed forward evenly.

[0081] When a detailed explanation of the second inclined surface 2321 is required, in the technical solution where the first inclined surface 2331 and the second inclined surface 2321 are fitted together, the portion of the set screw 232 connected to the second inclined surface 2321 cannot maintain its rotational characteristic. To simultaneously satisfy the advantages of the set screw 232 screwing in and the second inclined surface 2321 fitting together, in this embodiment, the set screw 232 may further include: a downwardly linearly advancing push portion 2322 and a helical portion 2323 threadedly connected to the second hole section 2312; the helical portion 2313 can rotate freely relative to the push portion 2322. Specifically, the top of the push portion 2322 may be provided with a rotating groove, and the bottom of the helical portion 2323 is engaged in the rotating groove; thereby ensuring that the first inclined surface 2331 and the second inclined surface 2321 are fitted together throughout the movement of the set screw 232, and preventing the push portion 2322 from separating from the helical portion 2323.

[0082] When the set screw 232 retracts, creating space, the set bar 233 can retract due to the pushing action of the connecting part 212 during rotation. However, its retraction is not complete, increasing friction between the connecting part 212 and the head of the set bar 233, resulting in a damping sensation and affecting its lifespan. To solve this problem, in this embodiment, as follows... Figure 10 , Figure 12 , Figure 13As shown, a return spring 2332 can also be fitted onto the retaining bar 233. Furthermore, the first hole section 2311 is reduced in diameter at the tail of the retaining bar 233, causing the return spring 2332 to engage between the retaining bar 233 and the first hole section 2311, providing thrust for the return of the retaining bar 233. By causing the retaining bar 233 to return to its original position, friction between the retaining bar 233 and the connecting part 212 is prevented, extending the service life of the insertion template.

[0083] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A planting template, characterized in that, include: The template body and several access mechanisms disposed on the template body; The access mechanism includes: A support base is provided on the template body; An access pipe passes through two opposite surfaces of the template body. The access pipe is hollow to allow the puncture needle of the applicator to be inserted. The access pipe is connected to the support base and passes through the template body. The access pipe includes: a pipe body and a connecting part disposed on the outer wall of the pipe body, wherein the outer wall of the connecting part is formed as part of a sphere; The support base is provided with a fitting hole that matches the connecting part. The connecting part is inserted into the fitting hole to rotate relative to the support base, thereby changing the angle of the access pipe. The access mechanism further includes: a locking component, which is connected to the support base and used to lock the angle of the access pipe; The locking component includes: A fixed through hole is provided on the support base, comprising: a first hole segment and a second hole segment that are connected to each other, the first hole segment communicating with the inner wall of the embedded hole, the second hole segment communicating with the outer wall of the support base, the angle between the first hole segment and the second hole segment being equal to 90 degrees, and the second hole segment being provided with a thread; A retaining bar is disposed within the first hole section, and the tail end of the retaining bar has an inclined surface facing the second hole section; A set screw, which is screwed into the second section of the set through hole through the thread, and forms a resistance against the connecting part by pushing the set bar located in the first section of the hole; A return spring is sleeved on the retaining bar and snapped between the retaining bar and the first hole segment, providing a thrust for the retaining bar to return to its original position.

2. The planting template according to claim 1, characterized in that, The outer wall of the support base has an inclined surface, and the angle between the inclined surface and the surface of the template body on which the support base is located is an acute angle. The fixed through hole is located on the inclined surface.

3. The planting template according to claim 1, characterized in that, The planting template also includes: The base is mounted on the main body of the template; The template body has an assembly hole on the side opposite to the base side; The diameter range of the assembly holes is 5 mm to 50 mm; The access mechanism is disposed between the mounting hole and the base.

4. The planting template according to any one of claims 1 to 3, characterized in that, The template body is made of any one of the following materials: metallic materials, polymeric materials, or inorganic non-metallic materials; The edges of the main body of the template are chamfered. The number of access institutions ranges from 4 to 15. The access mechanisms are arranged in a matrix on the template body; The hollow inner diameter of the access pipe ranges from 0.1 mm to 5 mm; The length of the access pipe ranges from 1 cm to 5 cm.

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