Multi-pass puncture template

Abstract

The application relates to a multi-channel puncture template, comprising a first panel and a second panel, the first panel and the second panel are respectively provided with a plurality of coaxially aligned first guide needle holes and second guide needle holes, characterized in that at least one layer of connecting plates is arranged between the combined first panel and the second panel in the axial direction of the first guide needle holes and the second guide needle holes, a plurality of through holes coaxially aligned with the first guide needle holes and the second guide needle holes are arranged in each layer of the at least one layer of connecting plates, and the first guide needle holes of the first panel, the through holes of each layer of the at least one layer of connecting plates and the second guide needle holes of the second panel jointly form guide needle channels. The multi-channel puncture template can provide a long enough guide needle channel and is easy to process.

Description

Technical Field

[0001] This application relates to a puncture guidance device, and more specifically, to a multi-channel puncture template. Background Technology

[0002] The incidence of prostate cancer in my country is increasing year by year, and it has become the leading cause of malignant tumors of the urinary system (in men). Prostate biopsy is the ultimate standard and best diagnostic method for prostate cancer. There are generally two approaches to prostate biopsy: perineal and transrectal. Transrectal biopsy requires a pre-operative enema, and the rectal mucosa is prone to bleeding and infection post-operatively. Perineal biopsy, due to its higher safety, greater ability to detect early-stage tumors, and reduced post-operative adverse reactions, is increasingly being used by more medical institutions.

[0003] Transperineal biopsy requires a transperineal puncture template. During a transperineal prostate biopsy, the template is placed against the patient's perineum, and a biopsy needle is inserted into the prostate gland through the guide holes in the template. Transperineal puncture templates have two structural characteristics: 1. Multiple evenly spaced, small guide holes, such as a 13×13 array; 2. Small guide hole diameter, approximately 1.35mm for 18G biopsy needles. Currently available puncture templates are mainly divided into two categories based on material: metal and plastic. Existing puncture templates have certain limitations: reusable metal templates have very small guide channel diameters, preventing the use of long cutting tools while maintaining processing precision. This results in insufficient template thickness, meaning the puncture guidance length is too short to stably support the puncture direction, thus reducing accuracy. Furthermore, the small size and large number of guide channels pose a risk of inadequate cleaning and sterilization during reuse. Plastic puncture templates are mostly assembled from injection-molded parts and are disposable. However, due to the small, long, and numerous guide pin channels in the puncture template, mold processing is difficult, resulting in high mold costs. The small and long guide pin channels of the puncture template require corresponding small and long mold inserts. The longer the guide pin channel, the longer the mold insert needs to be. Longer inserts have lower strength, shorter lifespan, and are more prone to deformation during injection molding. This also increases the risk of damaging the inserts during injection molding, leading to a low product yield. The widespread adoption of plastic puncture templates is thus limited by the length of the guide pin channels and the price constraints of disposable products due to processing costs. Utility Model Content

[0004] The technical problem to be solved by this application is to provide a multi-channel puncture template that can provide a sufficiently long guide needle channel and accommodate the processing, in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by this application to solve its technical problem is as follows: a multi-channel puncture template is proposed, including a first panel and a second panel. The first panel and the second panel are respectively provided with a plurality of coaxially aligned first guide needle holes and second guide needle holes. The template also includes at least one layer of connecting plates stacked and disposed between the combined first panel and the second panel along the axial direction of the first guide needle holes and the second guide needle holes. Each layer of the at least one connecting plate is provided with a plurality of through holes coaxially aligned with the first guide needle holes and the second guide needle holes. The first guide needle holes of the first panel, the through holes of each layer of the at least one connecting plate and the second guide needle holes of the second panel together form a guide needle channel.

[0006] According to one embodiment of the multi-channel puncture template described in this application, the inner sides of the first panel and the second panel opposite to each other are respectively provided with a first stacking structure and a second stacking structure, and the two sides of each connecting plate opposite to the first panel and the second panel are respectively provided with a third stacking structure and a fourth stacking structure that cooperate with the corresponding first stacking structure and second stacking structure.

[0007] According to one embodiment of the multi-channel puncture template described in this application, each of the at least one connecting plate includes a plurality of connecting plate units arranged according to the distribution of the first guide needle hole and the second guide needle hole. Each connecting plate unit has a third stacking structure and a fourth stacking structure on its two sides opposite to the first panel and the second panel, which cooperate with the corresponding first stacking structure and the second stacking structure.

[0008] According to one embodiment of the multi-channel puncture template described in this application, the first guide needle hole and the second guide needle hole are distributed in a uniformly spaced m×n row and column array; the plurality of connecting plate units include n first connecting plate units and n second connecting plate units arranged in an upper and lower array, the first connecting plate unit has a column of a through holes, and the second connecting plate unit has a column of ma through holes, and a <m。

[0009] According to one embodiment of the multi-channel puncture template described in this application, the first guide needle hole and the second guide needle hole are distributed in a uniformly spaced 13×13 row and column array; the plurality of connecting plate units include 13 first connecting plate units and 13 second connecting plate units arranged in an upper and lower array, the first connecting plate unit having a column of 6 through holes, and the second connecting plate unit having a column of 7 through holes.

[0010] According to one embodiment of the multi-channel puncture template described in this application, the inner side of the first panel opposite to the second panel is provided with a first positioning boss around each first guide needle hole, and the inner side of the second panel opposite to the first panel is provided with a first countersunk groove around each second guide needle hole that mates with the first positioning boss; the first connecting plate unit and the second connecting plate unit are respectively provided with a second countersunk groove around each through hole on the side opposite to the first panel that mates with the first positioning boss, and are respectively provided with a second positioning boss around each through hole on the side opposite to the second panel that mates with the first countersunk groove.

[0011] According to one embodiment of the multi-channel puncture template described in this application, the first panel and the second panel are respectively provided with a cooperating positioning structure and a snap-fit ​​fixing structure so that when the first panel and the second panel are combined and fixed, the first guide needle hole of the first panel, the through hole of each connecting plate, and the second guide needle hole of the second panel are coaxially aligned.

[0012] According to one embodiment of the multi-channel puncture template described in this application, the outer periphery of the first panel has a first sidewall extending toward the second panel, and the outer periphery of the second panel has a second sidewall extending toward the first panel. The first sidewall of the first panel and the second sidewall of the second panel are fixed by the combination of the positioning structure and the snap-fit ​​fixing structure, thereby surrounding at least one layer of axially stacked connecting plates in the internal space formed by the two.

[0013] According to one embodiment of the multi-channel puncture template described in this application, the snap-fit ​​fixing structure includes a snap-fit ​​position and a snap-fit ​​groove correspondingly disposed on the first side wall and the second side wall; the positioning structure includes a stop correspondingly disposed on the first side wall and the second side wall; the positioning structure further includes a positioning post and a positioning hole correspondingly disposed on the relatively inner sides of the first panel and the second panel.

[0014] In one embodiment of the multi-channel puncture template described in this application, the bottom of one of the first panel and the second panel is further provided with a template fixing post.

[0015] The multi-channel puncture template of this application has the following beneficial effects: According to an embodiment of this application, the multi-channel puncture template consists of a first panel, a second panel, and at least one connecting plate axially stacked between the combined first and second panels. The first guide needle holes, through holes, and second guide needle holes correspondingly distributed on the first panel, connecting plate, and second panel are coaxially aligned to form a guide needle channel. In this way, the connecting plates can be axially stacked as needed, making the guide needle channel of the entire template longer and improving the accuracy of puncture guidance. Meanwhile, the through holes of a single-layer connecting plate are short in length, easy to process, and reduce processing difficulty and cost. According to a further embodiment of this application, the connecting plate can also be composed of multiple identical or different connecting plate units according to the array distribution of the first and second guide needle holes, to further reduce processing difficulty and improve production efficiency. Attached Figure Description

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the external structure of a multi-channel puncture template according to an embodiment of this application;

[0018] Figure 2 yes Figure 1 The exploded structure diagram of the multi-channel puncture template is shown below;

[0019] Figure 3 yes Figure 2 A schematic diagram of the inner structure of the first panel in the middle;

[0020] Figure 4 yes Figure 2 A schematic diagram of the inner structure of the second panel in the diagram;

[0021] Figure 5 yes Figure 2 A schematic diagram of the structure of the first connecting plate unit in the middle;

[0022] Figure 6 yes Figure 2 A schematic diagram of the structure of the second connecting plate unit;

[0023] Figure 7 yes Figure 2 A schematic diagram of the structure of the template fixing column;

[0024] Figure 8 yes Figure 1 The cross-sectional view of the guide needle channel structure of the multi-channel puncture template is shown.

[0025] Reference numerals: 100 - Multi-channel puncture template; 10 - First panel; 11 - First outer surface; 12 - First inner surface; 13 - First sidewall; 14 - First guide needle hole; 141 - First guide slope; 15 - First positioning boss; 161a - First stop; 161b - Reverse stop; 162 - First positioning post; 163 - First positioning hole; 171 - First buckle groove; 172 - First buckle position; 20 - Second panel; 21 - Second outer surface; 22 - Second inner surface; 23 - Second sidewall; 24 - Second guide needle hole; 241 - Second guide slope; 25-First countersunk groove; 261-Second stop; 262-Second positioning hole; 263-Second positioning post; 271-Second snap-fit; 272-Second snap-fit ​​groove; 28-Mounting hole; 30a-First layer connecting plate; 30b-Second layer connecting plate; 31-First connecting plate unit; 32-Second connecting plate unit; 33, 33a, 33b-Through hole; 34, 34a, 34b-Second positioning boss; 35, 35a, 35b-Second countersunk groove; 40-Guide needle channel; 50-Template fixing post; 51-Chamfer; 52-Groove; 60-Punch needle. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.

[0027] Figure 1 A schematic diagram of the external structure of a multi-channel puncture template 100 according to an embodiment of this application is shown. Figure 2 An exploded structural diagram of the multi-channel puncture template 100 is shown. See also... Figure 1 and Figure 2 As shown, the multi-channel puncture template 100 mainly consists of a first panel 10, a second panel 20, and at least one connecting plate (the first connecting plate 30a and the second connecting plate 30b shown in the figure) axially stacked between the first panel 10 and the second panel 20. Figure 8As shown, the first panel 10 and the second panel 20 are respectively provided with multiple coaxially aligned first guide needle holes 14 and second guide needle holes 24. The first connecting plate 30a and the second connecting plate 30b are respectively provided with multiple through holes 33a and 33b coaxially aligned with the first guide needle holes 14 and the second guide needle holes 24. The first guide needle holes 14 of the first panel 10, the through holes 33a and 33b of the first connecting plate 30a and the second connecting plate 30b, and the second guide needle holes 24 of the second panel 20 together form a guide needle channel 40, which is used to guide the puncture needle 60 to perform puncture operations. A template fixing post 50 is provided at the bottom of the second panel 20 for mounting and fixing the multi-channel puncture module 100 on the ultrasound probe or a bracket on which the ultrasound probe has been installed.

[0028] See details Figure 2 Combination Figure 3 As shown, the first panel 10 has a first outer side 11 facing away from the second panel 20 and a first inner side 12 opposite to the second panel 20, and forms a first sidewall 13 extending toward the second panel 20 on its outer periphery. A plurality of first guide holes 14 penetrate the first outer side 11 and the first inner side 12 of the first panel 10, and are distributed in a uniformly spaced m×n row and column array on the first panel 10, such as the 13×13 array shown in the figure. A first guide ramp 141 is formed on the first outer side 11 around each first guide hole 14 to provide guidance for the insertion of the puncture needle 60. A first positioning boss 15 is provided on the first inner side 12 around each first guide hole 14, serving as a first stacking structure for insertion into the opposite side of the first layer connecting plate 30a. See also Figure 2 Combination Figure 4 As shown, the second panel 20 has a second outer side surface 21 facing away from the first panel 10 and a second inner side surface 22 opposite to the first panel 10, and forms a second sidewall 23 extending toward the first panel 10 on its outer periphery. A plurality of second guide holes 24 penetrate the second outer side surface 21 and the second inner side surface 22 of the second panel 20, and are distributed on the second panel 20 in a uniformly spaced m×n row and column array, coaxially aligned with the first guide holes 14 on the first panel 10, for example, a 13×13 array as illustrated. A second guide ramp 241 is formed on the second outer side surface 21 around each second guide hole 24 (see...). Figure 8 As shown), it is used to guide the insertion of the puncture needle 60. The second inner side surface 22 is provided with a first countersunk groove 25 around each second guide needle hole 24, which mates with the first positioning boss 15, and serves as a second stacking structure for the opposite side of the second layer connecting plate 30b to be inserted.

[0029] See further Figure 2 Combination Figure 5 and Figure 6As shown, both the first-layer connecting plate 30a and the second-layer connecting plate 30b include n first connecting plate units 31 and n second connecting plate units 32 arranged in an up-and-down array. Each first connecting plate unit 31 has a column of a through holes 33, and each second connecting plate unit 32 has a column of m - a through holes 33, and a < m. That is, the through holes 33 of each upper and lower set of the first connecting plate unit 31 and the second connecting plate unit 32 are coaxially aligned with the first guide pin holes 14 and the second guide pin holes 24 respectively. In the specific illustrated embodiment, for the 13×13 array of the first guide pin holes 14 and the second guide pin holes 24, both the first-layer connecting plate 30a and the second-layer connecting plate 30b are composed of 13 first connecting plate units 31 in the upper row and 13 second connecting plate units 32 in the lower row. The first connecting plate unit 31 has a column of 6 through holes 33 penetrating both sides, and the second connecting plate unit 32 has a column of 7 through holes 33 penetrating both sides, which are coaxially aligned with a column of 13 first guide pin holes 14 and second guide pin holes 24 respectively. The 13×13 array of puncture channels in the illustrated embodiment is a commonly used puncture template configuration at present, and the combination of 6 holes and 7 holes is the best configuration for mold opening 1 + 1 injection molding and demolding. However, in different embodiments of the present application, the present application is not limited thereto. The first connecting plate unit 31 and the second connecting plate unit 32 also respectively form a second counterbore groove 35 that is inserted and matched with the first positioning boss 15 around each through hole 33 on the side opposite to the first panel 10 as the third stacking structure, and respectively form a second positioning boss 34 that is inserted and matched with the first counterbore groove 25 around each through hole 33 on the side opposite to the second panel 20 as the fourth stacking structure to achieve axial stacking. Referring again to Figure 2 Combine Figure 8As shown, 13 first connecting plate units 31 and 13 second connecting plate units 32 are sequentially inserted into the corresponding first countersunk grooves 25 on the inner side of the second panel 20 through the second positioning boss 34b to form the second connecting plate 30b. Then, another 13 first connecting plate units 31 and 13 second connecting plate units 32 are sequentially inserted into the second countersunk grooves 35b of the 13 first connecting plate units 31 and 13 second connecting plate units 32 that form the second connecting plate 30b through the second positioning boss 34a to form the first connecting plate 30a. After the connecting plates are stacked, the first panel 10 and the second panel 20 are fixed together by a matching positioning structure and a snap-fit ​​fixing structure, so that the first positioning boss 15 on the inner side of the first panel 10 is inserted into the second countersunk groove 35a of the 13 first connecting plate units 31 and 13 second connecting plate units 32 that make up the first layer of connecting plate 30a. This achieves that the first guide needle hole 14 of the first panel 10, the through holes 33a and 33b of each layer of connecting plate 30a and 30b, and the second guide needle hole 24 of the second panel 20 are coaxially aligned and together form the guide needle channel 40 for guiding the puncture needle 60. In the illustrated embodiment, the first positioning boss 15 and the first countersunk groove 25 respectively provided on the inner sides of the first panel 10 and the second panel 20 opposite to each other constitute a first stacking structure and a second stacking structure. The second countersunk groove 35 and the second positioning boss 34 respectively provided on the sides opposite to the first panel 10 and the second panel 20 of each connecting plate 30a and 30b constitute a third stacking structure and a fourth stacking structure that respectively cooperate with the first stacking structure and the second stacking structure. Through the third stacking structure and the fourth stacking structure, the axial stacking of multiple connecting plates can be realized to provide a longer guide needle channel 40. According to different embodiments of this application, the axial stacking structure is not limited to the cooperation structure of the positioning boss and the countersunk groove in the illustrated embodiment.

[0030] To achieve rapid positioning of the first panel 10 and the second panel 20 and ensure the coaxial accuracy of the guide needle channel 40, the first panel 10 and the second panel 20 are respectively provided with matching positioning structures and snap-fit ​​fixing structures so that when the first panel 10 and the second panel 20 are combined and fixed, the first guide needle hole 14 of the first panel 10, the through holes 33a and 33b of each connecting plate 30a and 30b, and the second guide needle hole 25 of the second panel 20 are coaxially aligned. See details. Figure 3 and Figure 4As shown, the first sidewall 13 of the first panel 10 is provided with a first stop 161a and a first reverse stop 161b on the left and right sides and the top, respectively. The upper and lower left and right sides of the first inner sidewall 12 of the second panel 10 are also provided with a first positioning post 162 and a first positioning hole 163, respectively. Correspondingly, the second sidewall 13 of the second panel 20 is provided with a second stop 261 that mates with the first stop 161a and the first reverse stop 161b. The second inner sidewall 22 of the second panel 20 is provided with a second positioning hole 262 and a second positioning post 263 that mate with the first positioning post 162 and the first positioning hole 163, respectively. See also... Figure 3 and Figure 4 As shown, the first sidewall 13 of the first panel 10 is provided with first snap grooves 171 on the left and right sides and the top, and a first snap position 172 is formed at the bottom; correspondingly, the second sidewall 23 of the second panel 10 is provided with second snap positions 271 that engage with the first snap grooves 171 on the left and right sides and the top, and a second snap groove 272 that engages with the first snap position 172 at the bottom. The first panel 10 and the second panel 20 can achieve rapid and accurate positioning through the positioning structure formed by the cooperation of the first stop 161a, the first reverse stop 161b and the second stop 261, the first positioning post 162 and the second positioning hole 262, and the first positioning hole 163 and the second positioning post 263, and can achieve fastening and fixing through the snap fixing structure formed by the cooperation of the first snap groove 171 and the second snap position 271 and the first snap position 172 and the second snap groove 272. After the first panel 10 and the second panel 20 are fixed together, the first layer connecting plate 30a and the second layer connecting plate 30b, which are stacked axially, are surrounded in the internal space formed by the first sidewall 13 and the second sidewall 23. It will be apparent to those skilled in the art that, according to different embodiments of this application, the positioning structure and snap-fit ​​fixing structure between the first panel 10 and the second panel 20 are not limited to the illustrated embodiment; any other structure that can fix the first panel 10 and the second panel 20 together is applicable.

[0031] See also Figure 4 and Figure 7 As shown, the second panel 20 has mounting holes on its bottom left and right sides for mounting template fixing posts 50. The multi-channel puncture module 100 is mounted and fixed to the ultrasound probe or a bracket with an already mounted ultrasound probe via the template fixing posts 50. The end of the template fixing post 50 that is fitted to the second panel 20 preferably has a chamfer 51 for guidance and a groove 52 for adjustment. According to different embodiments of this application, the template fixing post 50 can also be installed at the bottom of the first template 10, and is not limited to the illustrated embodiment.

[0032] The multi-channel puncture module 100 according to the above embodiments of this application consists of a first panel 10, a second panel 20, and at least one connecting plate 30a, 30b axially stacked between the combined first panel 10 and second panel 20. The lengths of the first guide pin hole 14 of the first panel 10, the second guide pin hole 24 of the second panel 20, and the through holes 33a, 33b of each connecting plate 30a, 30b can be short, eliminating the need for processing and maintenance of numerous slender inserts and avoiding the constraints of the slender draft angle of injection molding. This reduces processing difficulty and cost, ensures high hole precision, smooth and debris-free guide pin channels, and smooth and unobstructed biopsy needle insertion and exit. The guide pin channels have high coaxial precision, ensuring that all biopsy needles guided by the template remain parallel and equidistant, without skewing. The axial stacking of the connecting plates provides a sufficiently long guide channel, ensuring the accuracy of puncture guidance.

[0033] According to the above embodiments of this application, the multi-channel puncture module 100 has a cooperating positioning structure between its first panel 10 and second panel 20 for rapid positioning during product assembly, ensuring quick and accurate assembly. A cooperating snap-fit ​​fixing structure is also provided between the first panel 10 and the second panel 20, which is connected by its own elastic snap-fit ​​mechanism, forming a single unit after snapping. Corresponding stacking structures are provided between each connecting plate layer and between the first panel 10 and the second panel 20, enabling rapid axial stacking positioning during assembly and ensuring the coaxial accuracy of the guide needle channels.

[0034] The multi-channel puncture module 100 according to the above embodiments of this application can be entirely injection molded from medically acceptable plastic material to form a disposable product. Alternatively, some parts, such as the connecting plate, can be made of medical-grade metal to prevent plastic debris from being scraped up by the needle tip and introduced into the body. The first panel 10 and the second panel 20 of the multi-channel puncture module 100 according to the above embodiments of this application can both serve as needle insertion surfaces. Different row and column markings can be set on the outer surfaces of the first panel 10 and the second panel 20 according to the ultrasound image, making the product compatible with most ultrasound devices. The outer ends of the first needle guide hole 14 and the second needle guide hole 24 both have guide bevels to facilitate needle alignment during puncture.

[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-channel puncture template, comprising a first panel and a second panel, wherein the first panel and the second panel are respectively provided with a plurality of coaxially aligned first guide needle holes and second guide needle holes, characterized in that, It also includes at least one connecting plate stacked along the axial direction of the first guide pin hole and the second guide pin hole between the combined first panel and the second panel. Each of the at least one connecting plate has a plurality of through holes coaxially aligned with the first guide pin hole and the second guide pin hole. The first guide pin hole of the first panel, the through holes of each of the at least one connecting plate and the second guide pin hole of the second panel together form a guide pin channel. The inner sides of the first panel and the second panel, which are opposite to each other, are respectively provided with a first stacking structure and a second stacking structure; Each of the at least one connecting plate includes multiple connecting plate units arranged according to the distribution of the first guide pin hole and the second guide pin hole. Each connecting plate unit has a third stacking structure and a fourth stacking structure on its two sides opposite to the first panel and the second panel, which cooperate with the corresponding first stacking structure and the second stacking structure. The first and second guide pin holes are distributed in a uniformly spaced m×n row and column array; the plurality of connecting plate units include n first connecting plate units and n second connecting plate units arranged in an upper and lower array, the first connecting plate unit has a column of a through holes, and the second connecting plate unit has a column of ma through holes, and a <m; The first panel has a first positioning boss around each first guide pin hole on the inner side opposite to the second panel as the first stacking structure. The second panel has a first countersunk groove around each second guide pin hole on the inner side opposite to the first panel as the second stacking structure. The first connecting plate unit and the second connecting plate unit have a second countersunk groove around each through hole on the side opposite to the first panel as the third stacking structure, and a second positioning boss around each through hole on the side opposite to the second panel as the fourth stacking structure, which engages with the first countersunk groove.

2. The multi-channel puncture template according to claim 1, characterized in that, The first and second guide pin holes are distributed in a 13×13 row and column array with uniform intervals; the plurality of connecting plate units include 13 first connecting plate units and 13 second connecting plate units arranged in an array above and below, the first connecting plate unit has a column of 6 through holes, and the second connecting plate unit has a column of 7 through holes.

3. The multi-channel puncture template according to claim 1, characterized in that, The first panel and the second panel are respectively provided with a matching positioning structure and a snap-fit ​​fixing structure so that when the first panel and the second panel are combined and fixed, the first guide pin hole of the first panel, the through hole of each connecting plate, and the second guide pin hole of the second panel are coaxially aligned.

4. The multi-channel puncture template according to claim 3, characterized in that, The outer periphery of the first panel has a first sidewall extending toward the second panel, and the outer periphery of the second panel has a second sidewall extending toward the first panel. The first sidewall of the first panel and the second sidewall of the second panel are fixed by the combination of the positioning structure and the snap-fit ​​fixing structure, thereby surrounding at least one layer of axially stacked connecting plates in the internal space formed by the two.

5. The multi-channel puncture template according to claim 4, characterized in that, The snap-fit ​​fixing structure includes a snap-fit ​​position and a snap-fit ​​groove correspondingly disposed on the first side wall and the second side wall; the positioning structure includes a stop correspondingly disposed on the first side wall and the second side wall; the positioning structure also includes a positioning post and a positioning hole correspondingly disposed on the relatively inner sides of the first panel and the second panel.

6. The multi-channel puncture template according to claim 1, characterized in that, The bottom of one of the first panel and the second panel is also provided with a template fixing column.

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