Detection device

Abstract

The embodiment of the present application provides a detection device, which comprises a limiting base and a detection piece. The limiting base is provided with a first positioning groove for accommodating and limiting a guide structure. The detection piece is arranged on one side of the limiting base provided with the first positioning groove, and is provided with a detection groove, an instrument exit opening and a first observation opening communicated with the detection groove. The instrument exit opening faces the first positioning groove, so that when the head of a target instrument passes through the guide hole of the guide structure, the target instrument can enter the detection groove through the instrument exit opening. At this time, the positional relationship between the target instrument and the detection groove can be observed through the first observation opening, and the guiding accuracy of the guide structure to the target instrument can be judged. The structure is simple, the operation is convenient, and the efficiency and cost of the guiding accuracy detection of the guide structure to the target instrument can be effectively reduced.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, and in particular relates to a detection device. Background Technology

[0002] Interventional medical devices such as medical catheters typically require a guide structure to enter the human body and assist in a series of procedures, including vascular suturing. During the intervention of these devices, the guide structure precisely guides them, allowing them to accurately enter specific tissues within the body.

[0003] Due to material limitations, the stability of guide structures during production is relatively poor, affecting their guiding accuracy towards the target instrument. Therefore, before a guide structure is put into use, its guiding accuracy usually needs to be tested to determine if it meets the requirements. However, current testing technologies for the guiding accuracy of guide structures have low testing efficiency and high testing costs. Utility Model Content

[0004] This application provides a detection device that can efficiently detect the guiding accuracy of a guide structure for a target instrument, while reducing detection costs.

[0005] In a first aspect, embodiments of this application provide a detection device for detecting the guiding accuracy of a guide structure for a target instrument. The guide structure has a guide hole for the target instrument to pass through. The detection device includes a limiting base and a detection component. The limiting base has a first positioning groove for accommodating and limiting the guide structure. The detection component is disposed on the side of the limiting base where the first positioning groove is located. The detection component has a detection groove and an instrument inlet / outlet and a first observation port communicating with the detection groove. The instrument inlet / outlet faces the first positioning groove and is used for the target instrument passing through the guide hole of the guide structure to enter the detection groove. The first observation port is located on the side of the detection groove away from the limiting base and is used to observe the positional relationship between the target instrument and the detection groove.

[0006] In some embodiments, the outlet of the guide hole of the guide structure is provided with a guide slope; the instrument inlet and outlet are located on one side of the detection groove along the length direction of the detection groove, and in the length direction, the detection groove is inclined away from the first positioning groove in the direction away from the instrument inlet and outlet.

[0007] In some embodiments, the detection element and the limiting base are detachably connected; or, the detection element and the limiting base are integrally formed.

[0008] In some embodiments, the difference between the width of the detection groove and the width of the target instrument is less than or equal to 0.6 mm.

[0009] In some embodiments, the side of the limiting base with the first positioning groove includes a first surface and a second surface. The first positioning groove is located on the first surface. In the length direction of the first positioning groove, the second surface is located on one side of the first surface. The second surface is recessed relative to the first surface, and the detection element is disposed on the second surface.

[0010] In some embodiments, the detection device further includes a limiting cover, which is disposed on the side of the limiting base where the first positioning groove is provided. The limiting cover is connected to the limiting base and is used to press against the side of the guide structure away from the limiting base.

[0011] In some embodiments, the limiting cover has a second positioning groove on the side facing the limiting base, the second positioning groove being used to accommodate at least a portion of the guide structure; and / or, the limiting cover has a second observation port, the second observation port being used to expose the first observation port.

[0012] In some embodiments, one of the surfaces of the limiting base and the limiting cover that are close to each other is provided with a protrusion and the other is provided with a recess, and the protrusion is used to engage with the recess.

[0013] In some embodiments, the detection device further includes a push-pull member for connecting the target instrument and driving the target instrument to slide relative to the guide structure.

[0014] In some embodiments, the guide structure is provided with a plurality of guide holes; the number of detection elements is at least two, and in a plane perpendicular to the length direction of the first positioning groove, the orthographic projections of at least two detection elements are located on both sides of the orthographic projection of the first positioning groove along the width direction of the first positioning groove.

[0015] This application provides a detection device, including a limiting base and a detection component. The limiting base has a first positioning groove for accommodating and limiting a guide structure. The detection component is disposed on the side of the limiting base with the first positioning groove. The detection component has a detection groove and an instrument inlet / outlet and a first observation port communicating with the detection groove. The instrument inlet / outlet faces the first positioning groove. Therefore, when the head of the target instrument passes through the guide hole of the guide structure, it can enter the detection groove through the instrument inlet / outlet. At this time, the positional relationship between the target instrument and the detection groove can be observed through the first observation port, and the guiding accuracy of the guide structure for the target instrument can be determined. The structure is simple and easy to operate, which can effectively reduce the efficiency and cost of detecting the guiding accuracy of the guide structure for the target instrument. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 These are exploded views of the detection device and guide structure provided in some embodiments of this application;

[0018] Figure 2 This is a top view of the detection device and guide structure provided in some embodiments of this application after assembly;

[0019] Figure 3 yes Figure 1 Enlarged view of section AA;

[0020] Figure 4 This is an exploded view of the detection device provided in some other embodiments of this application;

[0021] Figure 5 This is a schematic diagram of the limiting pressure cover of the detection device provided in other embodiments of this application.

[0022] Tag name:

[0023] Detection device 100; limiting base 110; first positioning groove 111; first surface 112; second surface 113; detection element 120; detection groove 121; instrument inlet / outlet 122; first observation port 123; limiting cover 130; second positioning groove 131; second observation port 132; protrusion 140; recess 150; push / pull element 160; guide structure 200; target instrument 300. Detailed Implementation

[0024] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0026] In the intervention of medical catheters and other target devices, the role of the guide structure is to precisely guide the target device, enabling it to accurately enter specific tissues in the human body. Due to material limitations, the guide structure has poor stability during production, affecting its guiding accuracy. Therefore, before being put into use, the guiding accuracy of the guide structure usually needs to be tested to determine whether its guiding accuracy is up to standard.

[0027] Currently, when testing the guiding accuracy of a guide structure, it is necessary to place the guide structure on a professional coordinate measuring machine platform and calibrate and position it. Then, a testing procedure for the target instrument is written to check whether the guide structure's testing accuracy for the target instrument is qualified. This method is inefficient and costly.

[0028] To address at least some of the aforementioned technical problems, embodiments of this application provide a detection device. The detection device provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0029] Please see Figures 1-3In a first aspect, embodiments of this application provide a detection device 100. The detection device 100 is used to detect the guiding accuracy of a guide structure 200 for a target instrument 300. The guide structure 200 is provided with a guide hole for the target instrument 300 to pass through. The detection device 100 includes a limiting base 110 and a detection element 120. The limiting base 110 is provided with a first positioning groove 111, which is used to accommodate and limit the guide structure 200. The detection element 120 is disposed on the side of the limiting base 110 where the first positioning groove 111 is provided. The detection element 120 is provided with a detection groove 121 and an instrument inlet / outlet 122 and a first observation port 123 communicating with the detection groove 121. The instrument inlet / outlet 122 faces the first positioning groove 111 and is used to allow the target instrument 300, which passes through the guide hole of the guide structure 200, to enter the detection groove 121. The first observation port 123 is located on the side of the detection groove 121 away from the limiting base 110 and is used to observe the positional relationship between the target instrument 300 and the detection groove 121.

[0030] The detection device 100 provided in this embodiment is used to detect the guiding accuracy of the guide structure 200 for the target instrument 300. The guide structure 200 has a guide hole for guiding the target instrument 300, allowing the head of the target instrument 300 to pass through the guide hole and enter the corresponding tissue of the human body. The target instrument 300 can be a medical device used for intervention in the human body in the field of medical devices. For example, the target instrument 300 can be a medical catheter used for internal suturing in interventional surgery, or other medical devices that require the guide structure 200 to enter the human body. Furthermore, the target instrument 300 can also be any device in other fields that requires guidance using the guide structure 200; this embodiment does not limit this.

[0031] In the testing device 100, a limiting base 110 is used to limit the guide structure 200. The limiting base 110 is provided with a first positioning groove 111. During the testing process, the target instrument 300 can first be inserted into the guide hole of the guide structure 200, so that the head of the target instrument 300 is located inside the guide hole. Then, at least a part of the guide structure 200 is placed in the first positioning groove 111. The guide structure 200 is limited by the side wall of the first positioning groove 111, which reduces the risk of the guide structure 200 moving during the testing process and helps to improve the accuracy and reliability of the testing device 100 in detecting the guiding accuracy of the guide structure 200.

[0032] It should be noted that the outline shape of the first positioning groove 111 can be adapted to the cross-sectional shape of at least part of the guide structure 200 so that at least part of the guide structure 200 can be accommodated by the first positioning groove 111, thereby limiting the guide structure 200.

[0033] The detection element 120 is used to detect the detection accuracy of the guide structure 200 on the target instrument 300. The detection element 120 can be disposed on the side of the limiting base 110 where the first positioning groove 111 is provided. The detection element 120 has a detection groove 121 and an instrument inlet / outlet 122 and a first observation port 123 communicating with the detection groove 121. The instrument inlet / outlet 122 is located on the side of the detection groove 121 and faces the first positioning groove 111. When the guide structure 200 is located in the first positioning groove 111, the instrument inlet / outlet 122 can be approximately facing the outlet of the guide hole of the guide structure 200. At this time, the target instrument 300 is pushed to slide relative to the guide structure 200, so that the head of the target instrument 300 passes through the guide hole of the guide structure 200. The operator can observe the positional relationship between the head of the target instrument 300 and the detection groove 121 through the first observation port 123 to determine whether the guiding accuracy of the guide structure 200 on the target instrument 300 is qualified.

[0034] Specifically, after the head of the target instrument 300 passes through the guide hole of the guide structure 200, the operator can observe through the first observation port 123 whether the head of the target instrument 300 enters the detection groove 121 to determine whether the guiding accuracy of the guide structure 200 for the target instrument 300 is qualified. For example, if the head of the target instrument 300 does not enter the detection groove 121, it indicates that the guiding accuracy error of the guide structure 200 for the target instrument 300 is large, and the guiding accuracy of the guide structure 200 for the target instrument 300 is unqualified. If the head of the target instrument 300 enters the detection groove 121, it indicates that the guiding accuracy error of the guide structure 200 for the target instrument 300 is relatively small. At this time, the positional relationship between the head of the target instrument 300 and the side wall of the detection groove 121 can be observed to further determine the guiding accuracy of the guide structure 200 for the target instrument 300. For example, if the head of the target instrument 300 contacts the side wall of the detection groove 121, the positional accuracy of the target instrument 300 is not up to standard, and the guiding accuracy of the guide structure 200 for the target instrument 300 is not up to standard. If the head of the target instrument 300 is spaced apart from the side wall of the detection groove 121 and does not contact it, the positional accuracy of the target instrument 300 is up to standard, and the guiding accuracy of the guide structure 200 for the target instrument 300 is up to standard.

[0035] This application provides a detection device 100, including a limiting base 110 and a detection element 120. The limiting base 110 is provided with a first positioning groove 111, which is used to accommodate and limit the guide structure 200. The detection element 120 is disposed on the side of the limiting base 110 where the first positioning groove 111 is provided. The detection element 120 is provided with a detection groove 121 and an instrument inlet / outlet 122 and a first observation port 123 communicating with the detection groove 121. The instrument inlet / outlet 122 faces the first positioning groove 111. Therefore, when the head of the target instrument 300 passes through the guide hole of the guide structure 200, it can enter the detection groove 121 through the instrument inlet / outlet 122. At this time, the positional relationship between the target instrument 300 and the detection groove 121 can be observed through the first observation port 123, and the guiding accuracy of the guide structure 200 on the target instrument 300 can be determined. The structure is simple and easy to operate, which can effectively reduce the efficiency and cost of detecting the guiding accuracy of the guide structure 200 on the target instrument 300.

[0036] Please continue reading. Figure 1 In some embodiments, the guide hole of the guide structure 200 has a guide ramp at its outlet. The instrument inlet / outlet 122 is located on one side of the detection groove 121 along the length direction of the detection groove 121. In the length direction, the detection groove 121 is inclined away from the first positioning groove 111 in the direction away from the instrument inlet / outlet 122.

[0037] In the guide structure 200, the outlet of the guide hole is provided with a guide slope, which is used to accurately guide the target instrument 300. The instrument inlet / outlet 122 is located on one side of the detection groove 121 along its own length direction. In this length direction, along the direction away from the instrument inlet / outlet 122, the detection groove 121 is inclined away from the first positioning groove 111 to match the guide slope of the guide structure 200. This allows the head of the target instrument 300 to enter the detection groove 121 after passing through the guide hole via the guide slope. Then, the positional relationship between the target instrument 300 and the side wall of the detection groove 121 can be observed through the first observation port 123 to determine whether the guiding accuracy of the guide structure 200 for the target instrument 300 is qualified.

[0038] In some embodiments, the detection element 120 is detachably connected to the limiting base 110 to facilitate replacement and maintenance of the detection element 120. For example, damage and oxidation of the limiting base 110 and the detection element 120 can be checked periodically to facilitate timely replacement and maintenance. Alternatively, detection elements 120 of different sizes can be replaced to adapt to different guide structures 200 and target instruments 300.

[0039] In other embodiments, the detection element 120 and the limiting base 110 are integrally formed, which helps to improve the stability of the detection element 120, thereby improving the accuracy and reliability of the guidance accuracy detection of the guide structure 200.

[0040] In some embodiments, the difference between the width of the detection groove 121 and the width of the target instrument 300 is less than or equal to 0.6 mm.

[0041] The difference between the width of the detection groove 121 and the width of the target instrument 300 can refer to the difference between the width of the detection groove 121 and the width of the head of the target instrument 300. It can characterize, to a certain extent, the allowable offset of the head of the target instrument 300 in the detection groove 121 along the width direction of the detection groove 121, that is, characterize the accuracy error of the guide structure 200 when guiding the target instrument 300.

[0042] Specifically, when the head of the target device 300 enters the detection groove 121, if its head is located at the center of the detection groove 121 along its width direction, the guiding accuracy of the guide structure 200 for the target device 300 and the positional accuracy of the target device 300 under the guidance of the guide structure 200 are both in an ideal state. The distance between the opposite sides of the head of the target device 300 and the corresponding sidewall can be approximately half of the aforementioned difference. That is, when the actual offset of the head of the target device 300 after passing through the guide structure 200 is less than half of the aforementioned difference, the head of the target device 300 will not contact the sidewall of the detection groove 121 after entering the detection groove 121, and the guiding accuracy of the guide structure 200 for the target device 300 is qualified.

[0043] Taking the difference between the width of the detection groove 121 and the width of the target instrument 300 as 0.6mm as an example, under ideal conditions, the distance between the two sides of the head of the target instrument 300 and the corresponding sidewall can be approximately 3mm. At this time, when the actual offset of the head of the target instrument 300 after passing through the guide structure 200 is less than 3mm, the guide structure 200 has qualified the guiding accuracy of the target instrument 300.

[0044] This application embodiment optimizes the design of the difference between the width of the detection groove 121 and the width of the target instrument 300, that is, optimizes the design of the accuracy error when the guide structure 200 guides the target instrument 300, so as to meet the accuracy requirements of the guide structure 200 guiding the target instrument 300.

[0045] Please continue reading. Figures 1-3 In some embodiments, the limiting base 110 has a first surface 112 and a second surface 113 on one side of the first positioning groove 111. The first positioning groove 111 is located on the first surface 112. In the length direction of the first positioning groove 111, the second surface 113 is located on one side of the first surface 112. The second surface 113 is recessed relative to the first surface 112. The detection element 120 is disposed on the second surface 113.

[0046] Specifically, the guide structure 200 may include a head and a straight rod portion located on one side of the head. The first positioning groove 111 can be used to accommodate the straight rod portion of the guide structure 200, such that its head is located outside the first positioning groove 111, for example, its head can be located in the area corresponding to the second surface 113. It is understood that the height of the head of the guide structure 200 is usually greater than the height of the straight rod portion. Therefore, by setting the second surface 113 of the limiting base 110 to be recessed relative to the first surface 112, the risk of interference between the second surface 113 of the limiting base 110 and the head of the guide structure 200 can be reduced in this embodiment.

[0047] Furthermore, the outlet of the guide hole can be located at the head of the guide structure 200. Therefore, when the guide structure 200 is assembled on the limiting base 110, the outlet of the guide hole can be located outside the first positioning groove 111. This reduces the risk that the sidewall of the first positioning groove 111 will affect the extension path of the target instrument 300 after it passes through the guide structure 200, and helps to improve the accuracy and reliability of the detection device 100 in detecting the guiding accuracy of the guide structure 200.

[0048] Please see Figure 4 In some embodiments, the detection device 100 further includes a limiting cover 130, which is disposed on the side of the limiting base 110 where the first positioning groove 111 is provided. The limiting cover 130 is connected to the limiting base 110 and is used to press against the side of the guide structure 200 away from the limiting base 110.

[0049] In these embodiments, a limiting cover 130 is provided on one side of the limiting base 110 where the first positioning groove 111 is provided. The limiting cover 130 is connected to the limiting base 110, thereby limiting the guide structure 200 together with the limiting base 110, so as to improve the stability of the guide structure 200 during the detection process, and thus improve the accuracy and reliability of the detection device 100 in detecting the guiding accuracy of the guide structure 200.

[0050] Please see Figure 5 In some embodiments, the limiting cap 130 has a second positioning groove 131 on the side facing the limiting base 110. The second positioning groove 131 is used to accommodate at least a portion of the guide structure 200. The second positioning groove 131 can further position the guide structure 200, reducing the risk of the guide structure 200 shifting during the testing process.

[0051] Optionally, the shape of the second positioning groove 131 may correspond to the shape of the first positioning groove 111, or the shape of the second positioning groove 131 may be different from the shape of the first positioning groove 111. This embodiment does not impose any restrictions on this.

[0052] Please continue reading. Figure 4 and Figure 5In some embodiments, the limiting cover 130 is provided with a second observation port 132, which is used to expose the first observation port 123. The operator can observe the positional relationship between the target instrument 300 and the detection groove 121 through the second observation port 132 and the first observation port 123, thereby reducing the risk that the first observation port 123 will be blocked by the limiting cover 130.

[0053] It should be noted that the detection device 100 provided in this application embodiment may include any one or a combination of the above embodiments. For example, in this application embodiment, the limiting pressure cover 130 may simultaneously be provided with a second positioning groove 131 and a second observation port 132.

[0054] Please continue reading. Figure 4 In some embodiments, one of the surfaces of the limiting base 110 and the limiting cover 130 that are close to each other has a protrusion 140 and the other has a recess 150. The protrusion 140 is used to engage with the recess 150. The connection between the limiting cover 130 and the limiting base 110 is achieved by the cooperation of the protrusion 140 and the recess 150, which can reduce the assembly difficulty of the limiting cover 130 and the limiting base 110, and the structure is simple and easy to operate.

[0055] Optionally, there can be multiple protrusions 140 and recesses 150. Multiple protrusions 140 are spaced apart on one of the surfaces of the limiting base 110 and the limiting cover 130 that are close to each other, and multiple recesses 150 are spaced apart on the other. Multiple protrusions 140 can be engaged one-to-one with the limiting cover 130 when it presses against the side of the guide structure 200 away from the limiting base 110, so as to improve the reliability of the connection between the limiting cover 130 and the limiting base 110 and improve the stability of the limiting cover 130 in limiting the guide structure 200.

[0056] Please continue reading. Figure 1 In some embodiments, the detection device 100 further includes a push-pull member 160, which is used to connect the target instrument 300 and drive the target instrument 300 to slide relative to the guide structure 200, thereby reducing the difficulty of operation of the target instrument 300 by the operator and improving the detection efficiency of the detection device 100.

[0057] Optionally, the push-pull member 160 may be provided with a connection hole, and a part of the target instrument 300 may be inserted into the connection hole and pressurized with the inner wall of the connection hole, thereby realizing the connection between the push-pull member 160 and the target instrument 300, which helps to reduce the assembly difficulty of the push-pull member 160 and the target instrument 300.

[0058] Please see Figure 4In some embodiments, the guide structure 200 is provided with a plurality of guide holes; the number of detection elements 120 is at least two, and in a plane perpendicular to the length direction of the first positioning groove 111, the orthographic projections of at least two detection elements 120 are located on both sides of the orthographic projection of the first positioning groove 111 along the width direction of the first positioning groove 111.

[0059] The guide structure 200 is provided with multiple guide holes, which can guide multiple target instruments 300 at the same time, so that multiple target instruments 300 can be inserted into the human body at the same time and perform coordinated operation.

[0060] The number of detection elements 120 is at least two. In a plane perpendicular to the length direction of the first positioning groove 111, the orthographic projections of at least two detection elements 120 are located on both sides of the orthographic projection of the first positioning groove 111 along the width direction of the first positioning groove 111, so as to simultaneously detect the guiding accuracy of the guide structure 200 to at least two target instruments 300, thereby further improving the efficiency of the detection device 100 in detecting the guiding accuracy of the guide structure 200.

[0061] For example, the guide structure 200 may have two guide holes, and the number of detection elements 120 may be two. In a plane perpendicular to the length direction of the first positioning groove 111, the orthographic projections of the two detection elements 120 may be located on both sides of the orthographic projection of the first positioning groove 111 along the width direction of the first positioning groove 111. After the two target instruments 300 are respectively inserted into the two guide holes of the guide structure 200, the guide structure 200 is assembled to the limiting base 110, so that the instrument inlet / outlet 122 of the two detection elements 120 are approximately facing the outlet of the two guide holes. Then, one or both target instruments 300 are pushed so that the head of the target instrument 300 passes through the corresponding guide hole of the guide structure 200, and the positional relationship between the target instrument 300 and the detection groove 121 of the corresponding detection element 120 is observed, thereby determining whether the guiding accuracy of the guide structure 200 for the target instrument 300 is qualified.

[0062] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A detection device, characterized in that, The detection device is used to detect the guiding accuracy of the guide structure for the target instrument. The guide structure is provided with a guide hole for the target instrument to pass through. The detection device includes: The limiting base is provided with a first positioning groove, which is used to accommodate and limit the guide structure. The detection component is disposed on the side of the limiting base where the first positioning groove is located; The detection component is provided with a detection groove and an instrument inlet / outlet and a first observation port communicating with the detection groove. The instrument inlet / outlet faces the first positioning groove and is used to allow a target instrument passing through the guide hole of the guide structure to enter the detection groove. The first observation port is located on the side of the detection groove away from the limiting base and is used to observe the positional relationship between the target instrument and the detection groove.

2. The detection device of claim 1, wherein, The guide hole of the guide structure has a guide slope at its outlet; The instrument inlet / outlet is located on one side of the detection groove along its length. Along the length direction, the detection groove is inclined away from the first positioning groove in a direction away from the instrument inlet / outlet.

3. The detection device according to claim 1, characterized in that, The detection element is detachably connected to the limiting base; or... The detection component and the limiting base are integrally formed.

4. The detection device according to claim 1, characterized in that, The difference between the width of the detection groove and the width of the target instrument is less than or equal to 0.6 mm.

5. The detection device according to claim 1, characterized in that, The limiting base has a first surface and a second surface on one side where the first positioning groove is provided. The first positioning groove is located on the first surface. In the length direction of the first positioning groove, the second surface is located on one side of the first surface. The second surface is recessed relative to the first surface. The detection element is disposed on the second surface.

6. The detection device according to any one of claims 1 to 5, characterized in that, The detection device further includes a limiting cover, which is disposed on the side of the limiting base where the first positioning groove is provided. The limiting cover is connected to the limiting base and is used to press against the side of the guide structure away from the limiting base.

7. The detection device according to claim 6, characterized in that, The limiting pressure cap has a second positioning groove on the side facing the limiting base, the second positioning groove being used to accommodate at least a portion of the guide structure; and / or, The limiting cover is provided with a second observation port, which is used to expose the first observation port.

8. The detection device according to claim 6, characterized in that, One of the surfaces of the limiting base and the limiting cover that are close to each other has a protrusion and the other has a recess, and the protrusion is used to engage with the recess.

9. The detection device according to any one of claims 1 to 5, characterized in that, The detection device further includes a push-pull component, which is used to connect the target instrument and drive the target instrument to slide relative to the guide structure.

10. The detection device according to any one of claims 1 to 5, characterized in that, The guide structure is provided with a plurality of guide holes; The number of the detection elements is at least two. In a plane perpendicular to the length direction of the first positioning groove, the orthographic projections of at least two of the detection elements are located on both sides of the orthographic projection of the first positioning groove along the width direction of the first positioning groove.

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