Sample collection device and endoscope

Abstract

The application belongs to the technical field of endoscopes, and provides a sample collection device and an endoscope. The sample collection device comprises a base assembly, the base assembly comprising a first channel and a second channel, the first channel penetrating through the base assembly along a first direction, one end of the first channel being used for being connected with a device mouth of an endoscope, and a sampling device being capable of penetrating through the base assembly along the first channel from the end of the first channel away from the device mouth into the endoscope; the second channel penetrating through the base assembly along a second direction, the second direction intersecting the first direction, the first channel being communicated with the second channel, and one end of the second channel being used for being connected with a collection bag; and a clamping assembly, the clamping assembly being hingedly installed on an outer peripheral wall of the base assembly, and the clamping assembly being used for clamping and fixing the collection bag on the base assembly. The sample collection device of the application can realize that various collection bags can be applied to the base assembly connection in the application, and sampling is realized.

Description

Technical Field

[0001] This invention relates to the field of endoscopy, and more particularly to a sample collection device and an endoscope. Background Technology

[0002] Endoscopes are increasingly used in modern minimally invasive surgery, as they can enter the human body through natural cavities or minimally invasive openings. In addition, endoscopes can also sample internal tissues. After obtaining the sample, the sampling instrument removes it from the endoscope and places it into a sample storage container for subsequent testing.

[0003] When a sampling instrument is inserted into the human body through an endoscope to collect a sample, the sample is exposed to ambient air for a period of time during the process of being placed into the storage container outside the endoscope, which can lead to sample contamination. To avoid sample contamination, a storage container is installed on the side of the endoscope. When the sampling instrument is pulled out to the preset position of the endoscope, the sample is transferred to the storage container through the sample transfer channel before being fully pulled out of the endoscope. However, this design has the problem that the sampling instrument needs to change direction multiple times during the extraction process. During the direction change, the sample may collide with the inner wall multiple times, which may damage the integrity of the sample.

[0004] In the existing technology, the connection port on the side of the endoscope is connected to the memory. Since there are many types of memory, the connection port cannot be adapted to various memory, resulting in poor sealing. Summary of the Invention

[0005] The purpose of this invention is to provide a sample collection device and endoscope to solve the aforementioned technical problems in the prior art, mainly including two aspects: A first aspect of this application provides a sample collection device for an endoscope, the sample collection device comprising: The matrix assembly includes a first channel and a second channel. The first channel extends through the matrix assembly along a first direction, and one end of the first channel is connected to the instrument tip of an endoscope. A sampling instrument can enter the endoscope through the first channel from the end of the first channel away from the instrument tip, extending through the matrix assembly. The second channel extends through the matrix assembly along a second direction, which intersects with the first direction. The first channel and the second channel are connected, and one end of the second channel is connected to a collection bag. A clamping assembly is hinged to the outer peripheral wall of the base assembly; and the clamping assembly is used to clamp and fix the collection bag to the base assembly.

[0006] Furthermore, the clamping assembly includes: a clamping arm, and a hinge seat is provided on the outer peripheral wall of the base assembly; The clamping arm is symmetrically arranged with the clamping arm along the axis of the base assembly, and hinge portions are symmetrically arranged on both sides of the clamping arm. The clamping arm is connected to the hinge seat of the base assembly through the hinge portions. The upper end of the clamping arm is provided with a force-applying part, and the opening and closing of the clamping arm can be controlled by pressing the force-applying part; The lower end of the clamping arm is provided with a clamping part, which can be located away from or close to the axis of the base assembly.

[0007] Furthermore, the shape of the clamping part is adapted to the shape of the lower port of the base assembly.

[0008] Furthermore, each of the two free ends of the clamping portion is provided with an extension portion, which extends in a direction away from the axis of the base assembly.

[0009] Furthermore, when the clamping arm is closed, a gap is formed between the extensions, which is used to accommodate the empty portion of the collection bag.

[0010] Furthermore, a receiving groove is formed on the outer peripheral wall of the base component; a sealing strip is provided at the inner wall of the opening of the collection bag, the sealing strip is located in the receiving groove and is connected to the receiving groove.

[0011] Furthermore, an elastic element is installed between the hinge portion and the hinge seat, and the elastic element can drive the clamping portion to remain closed.

[0012] Furthermore, a sealing part is provided at one end of the first channel that connects to the endoscope instrument nozzle. The sealing part has a hollow structure, is coaxially arranged with the first channel, communicates with the second channel, and extends in a direction away from the second channel. The diameter of the sealing part is not greater than the maximum radial dimension of the sampling instrument.

[0013] Furthermore, the sample collection device further includes a sample pushing component, which is movably disposed within the second channel. The sample pushing component and the collection bag are located on opposite sides of the first channel, and the sample pushing component is used to push the sample at the intersection of the first channel and the second channel into the collection bag.

[0014] A second aspect of this application provides an endoscope including a handle and the aforementioned sample collection device, the sample collection device being mounted on the handle.

[0015] Compared with the prior art, the present invention has at least the following technical effects: The sample collection device provided in this application uses a clamping component hinged to the outer peripheral wall of the base assembly. Applying force to the clamping component opens it, allowing the collection bag to be placed on the base assembly. Removing the force closes the clamping component, securing the collection bag to the base assembly and ensuring a tight fit against its outer peripheral wall. This sample collection device eliminates the need for a dedicated sample storage bottle; all types of collection bags available in the prior art can be used to connect to the base assembly in this application for sampling.

[0016] In this application, the collection bag is fixed to the base component by a clamping component, so that there is no need to set a connecting part on the outer peripheral wall of the base component to connect with the collection bag, thus maintaining the integrity of the collection bag and avoiding the need to modify the structure of the collection bag before it can be connected to the base component. Moreover, the collection bag is equivalent to the base component, making it very convenient to connect and remove.

[0017] In this application, extensions are provided at the two free ends of the clamping part, so that the base component can be used with collection bags of any size. When the size of the opening of the collection bag is larger than the lower port of the base component, the excess part of the opening of the collection bag can be extended into the extension, so that the opening of the collection bag does not wrinkle or shrink, and the opening can fit and seal well with the lower port, avoiding wrinkles that would cause the opening and the lower port to not seal and cause sample contamination. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the sample collection device in the closed state in this invention; Figure 2 This is a schematic diagram of the structure of the base component in this invention; Figure 3 This is a cross-sectional view of the base component in the present invention along the AA direction; Figure 4 This is a schematic diagram of the clamping component in this invention; Figure 5 This is a schematic diagram of the structure of the collection bag in this invention; Figure 6 This is a cross-sectional view in the BB direction of the sample collection device in the present invention when it is in the closed state; Figure 7 yes Figure 6 Enlarged view of section F in the middle; Figure 8 This is a schematic diagram of the extrusion assembly in this invention; Figure 9 This is a cross-sectional view of the pusher assembly in the CC direction of the present invention; Figure 10 This is a schematic diagram of the sample collection device in the present invention in the open state; Figure 11 This is a schematic diagram of the endoscope in this invention.

[0020] In the figure: 100-Sample collection device; 10-Substrate assembly; 11-First channel; 111-Sealing part; 12-Second channel; 13-Hinge seat; 14-Receiving groove; 15-Lower port; 101-First connecting end; 102-Second connecting end; 20-Sample pushing assembly; 21-Through hole; 22-Rubber pad; 30-Clamping assembly; 31, 32-Clamping arms; 311, 321-Hinge part; 312, 322-Force application part; 313, 323-Clamping part; 3131, 3231-Extension part; 3132-Gap; 40-Collection bag; 41-Opening; 42-Unused part; 43-Sealing strip; 200-Handle. Detailed Implementation

[0021] The following description provides many different embodiments or examples for implementing various features of the invention. The elements and arrangements described in the specific examples below are only for concise expression of the invention and are merely examples, not intended to limit the invention.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, the terms "first," "second," and "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0024] In this invention, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] Furthermore, in this invention, "proximal end" and "distal end" refer to the near and far positions of the structure relative to human operation in the usage environment, in order to facilitate the description of the positional relationship between components and to facilitate understanding; for the same component, "proximal end" and "distal end" are relative positional relationships of the component, not absolute ones; therefore, they should be understood from the perspective of realizing the principle of this invention, and should not deviate from the essence of this invention.

[0026] like Figures 1-11 As shown, the first aspect of this application provides a sample collection device 100 for an endoscope, the sample collection device 100 comprising: The base assembly 10 includes a first channel 11 and a second channel 12. The first channel 11 extends through the base assembly 10 along a first direction, which refers to the X-direction, i.e., the horizontal direction. The first channel 11 has two ends in the first direction, namely a first connecting end 101 and a second connecting end 102. One end of the first channel 11 is used to connect to the instrument mouth of the endoscope. The sampling instrument can enter the endoscope through the base assembly 10 from the end of the first channel 11 away from the instrument mouth. The first connecting end 101 of the first channel 11 can be connected to the instrument mouth provided on the endoscope. The instrument mouth is located in the first channel 11. The second connecting end 102 of the first channel 11 is used to allow the sampling instrument to enter the endoscope from the external environment. For example, the sampling instrument first enters the first channel 11 from the second connecting end 102, then passes through the second channel 12, and extends out from the first connecting end 101 into the endoscope. The second channel 12 penetrates the substrate assembly 10 along a second direction, which refers to the Y-direction, i.e., the vertical direction. The second direction intersects the first direction; specifically, the angle between the second and first directions is greater than zero degrees. Preferably, the angle between the first and second directions is 90°, i.e., the first and second directions are perpendicular. The first channel 11 communicates with the second channel 12. One end of the second channel 12 is connected to a collection bag 40. The first channel 11 allows the sampling instrument to pass through and exit the endoscope, while the second channel 12 pushes the sample into the collection bag 40. The collection bag 40 can be installed at either end of the two free ends of the second channel 12. Typically, the collection bag 40 is installed at the lower end of the second channel 12 to facilitate sample entry into the collection bag 40 and to prevent backflow into the second channel 12 when the sample is liquid.

[0027] Preferably, the substrate component 10 can be made of a transparent material.

[0028] The sample collection device 100 also includes a clamping assembly 30, which is hinged to the outer peripheral wall of the base assembly 10 and is used to clamp and fix the collection bag 40 to the base assembly 10.

[0029] The clamping component 30 is hinged to the base component 10 and mounted on the outer peripheral wall of the base component 10. This configuration allows the clamping component to be opened and closed by pressing the clamping component 30. It also facilitates the disassembly and replacement of the clamping component 30 in case of subsequent damage or other problems, thus saving costs.

[0030] The sample collection device provided in this application uses a clamping component 30 hinged to the outer peripheral wall of the base component 10. Applying force to the clamping component 30 opens it, allowing the collection bag 40 to be fitted onto the base component 10. Removing the force closes the clamping component 30, securing the collection bag 40 to the base component 10 and ensuring a tight fit against its outer peripheral wall. This sample collection device eliminates the need for a dedicated sample storage bottle to work with the base component 10. All types of collection bags 40 available in the prior art can be used to connect to the base component 10 for sampling, offering wide applicability. Furthermore, the clamping component 10 allows the collection bag 40 to be easily and conveniently removed from the base component 10.

[0031] Meanwhile, the collection bag 40 is fixed to the base component 10 by the clamping component 30. There is no need to set a connection part on the outer peripheral wall of the base component 10 to connect with the collection bag 40, thus maintaining the integrity of the collection bag 40. This avoids the need to modify the structure of the collection bag 40 before it can be connected to the base component 10. Moreover, the collection bag 40 is very convenient to connect and remove from the base component 10.

[0032] Furthermore, the clamping assembly 30 includes two clamping arms, namely clamping arm 31 and clamping arm 32, and a hinge seat 13 is provided on the outer peripheral wall of the base assembly 10. The clamping arms 31 and 32 are symmetrically arranged along the axis L of the base assembly 10. The clamping arms 31 and 32 have the same structure. Hinges 311 and 321 are symmetrically arranged on both sides of the clamping arms 31 and 32. The hinges 311 and 321 are respectively arranged on both sides of the clamping arms 31 and 32 in the horizontal direction. The hinges 311 and 321 are located in the lower middle position of the clamping arms 31 and 32. This arrangement allows the opening and closing of the clamping arms 31 and 32 to be controlled with a small force.

[0033] The clamping arms 31 and 32 are connected to the hinge seat 13 of the base assembly 10 through the hinge parts 311 and 321. The upper ends of the clamping arms 31 and 32 are provided with force-applying parts 312 and 322. The opening and closing of the clamping arms 31 and 32 are controlled by pressing the force-applying parts 312 and 322. The angle between the force-applying parts 312 and 322 and the axis L of the base assembly 10 is an acute angle. This arrangement facilitates the application of force to the clamping arms 31 and 32 and reduces the space occupied by the clamping assembly 30.

[0034] By placing the force-applying parts 312 and 322 at the upper ends of the clamping arms 31 and 32, the lever arm is increased, and the opening of the clamping arms 31 and 32 can be controlled with a smaller force.

[0035] Preferably, the force-applying parts 312 and 322 may also be provided with anti-slip textures on their outer surfaces to increase the friction between the force-applying person and the force-applying parts 312 and 322 during the application of force.

[0036] The lower ends of the clamping arms 31 and 32 are provided with clamping portions 313 and 323, which can be located away from or close to the axis of the base assembly 10.

[0037] Preferably, the clamping arms 31 and 32 are an integral structure, which is convenient for manufacturing.

[0038] Furthermore, the shapes of the clamping portions 313 and 323 are adapted to the shape of the lower port 15 of the base assembly 10.

[0039] In the above scheme, the shape of the clamping parts 313 and 323 is adapted to the shape of the lower port 15 of the substrate component 10 so that the collection bag 40 can fit better with the substrate component 10, achieve a seal, and prevent outside air from entering the collection bag 40 and contaminating the sample.

[0040] Specifically, when the outer peripheral surface of the lower end of the base component 10 is circular, the clamping portions 313 and 323 are both semicircular, and the clamping portions 313 and 323 together form a circle. In this case, the opening 41 of the collection bag 40 is fitted onto the lower port 15 of the base component 10. The clamping portions 313 and 323 clamp the opening 41 of the collection bag 40, thus achieving a sealed fit between the opening of the collection bag 40 and the lower port 15. Alternatively, the outer peripheral surface shape of the lower port 15 can be triangular, square, rectangular, etc., and is not limited here.

[0041] Furthermore, the two free ends of the clamping portions 313 and 323 are respectively provided with extension portions 3131 and 3231, which extend in a direction away from the axis of the base assembly 10.

[0042] In the above scheme, the two free ends of the clamping parts 313 and 323 are not fitted to the shape of the lower port 15 of the base component 10. Instead, the two free ends are respectively set as extension parts 3131 and 3231. The extension parts 3131 and 3231 extend in the horizontal direction and gradually move away from the axis L of the base component 10. The extension parts 3131 and 3231 can be extended according to the size of the collection bag 40. The length of the extension parts 3131 and 3231 is not limited.

[0043] In this application, extension portions 3131 and 3231 are provided at the two free ends of the clamping portions 31 and 32, so that the base assembly 10 can cooperate with the collection bag 40 of any size. When the size of the opening 41 of the collection bag 40 is larger than the lower port 15 of the base assembly 10, the excess part of the opening 41 of the collection bag 40 can be extended into the extension portion, so that the opening of the collection bag 40 does not wrinkle or shrink, and the opening 41 can fit and seal well with the lower port 15, avoiding wrinkles that would cause the opening 41 and the lower port 15 to not seal and cause sample contamination.

[0044] Furthermore, when the clamping arms 31 and 32 are closed, a gap 3132 is formed between the extension 3131 and the extension 3231, and the gap 3132 is used to accommodate the empty portion 42 of the collection bag 40.

[0045] In the above scheme, the extensions 3131 and 3231 are flat, which can better fit the opening 41 of the collection bag 40. The clamping parts 31 and 32 clamp the collection bag 40, that is, when closed, since the extensions 3131 and 3231 are symmetrically arranged along the axis L of the base assembly 10, a gap 3132 is formed between the two extensions 3131 and 3231. When the size of the opening 41 of the collection bag 40 is larger than the size of the lower port 15, that is, when there is a gap 42 in the opening 41 of the collection bag 40, the gap 42 can be accommodated in the gap 3132, thereby ensuring the sealing of the opening 41. This also makes the clamping assembly 30 of this application suitable for collection bags 40 of various sizes.

[0046] Furthermore, a receiving groove 14 is provided on the outer peripheral wall of the base component 10; a sealing strip 43 is provided on the inner wall of the opening 41 of the collection bag 40, and the sealing strip 43 is located in the receiving groove 14 and is connected to the receiving groove 14.

[0047] In the above scheme, a receiving groove 14 is provided on the outer peripheral wall of the lower port 15 of the base component 10. The receiving groove 14 is used to cooperate with the sealing strip 43 on the inner wall of the opening 41 of the collection bag 40 to seal the opening 41. When the clamping component 10 fixes the collection bag 40 to the outer peripheral wall of the base component 10 and is in a clamping state, the sealing strip 43 is embedded in the receiving groove 14 and seals with the receiving groove 14, ensuring the stability between the collection bag 40 and the base component 10. This makes the connection between the collection bag 40 and the base component 10 more airtight and prevents the sealing strip 43 from pressing against the outer peripheral wall of the base component 10, thus preventing air from entering the collection bag 40.

[0048] Specifically, the depth of the receiving groove 14 is greater than the thickness of the sealing strip 43 in the radial direction, and the width of the receiving groove 14 is greater than the width of the sealing strip 43 in the axial direction, so that the opening 41 of the collection bag 40 and the receiving groove 14 are more tightly sealed.

[0049] Furthermore, an elastic element is installed between the hinge portion 311, 321 and the hinge seat 13, and the elastic element can drive the clamping portion 313, 323 to remain closed.

[0050] The elastic element can be a torsion spring. When force is applied to the force application parts 312 and 322 of the clamping assembly 10 to open the clamping arms 31 and 32, after the force is removed, the clamping arms 31 and 32 can automatically return to the clamping state under the action of the elastic element, reducing the state control operation of the clamping assembly 10.

[0051] Furthermore, a sealing part 111 is provided in the first connection end 101, which is the end of the first channel 11 connected to the endoscope instrument nozzle. The sealing part 111 has a hollow structure and is coaxially arranged with the first channel 11. The sealing part 111 communicates with the second channel 12 and extends in a direction away from the second channel 12. The diameter of the sealing part 111 is not greater than the maximum radial dimension of the sampling instrument.

[0052] In the above scheme, a sealing part 111 is provided on the inner wall of the first connecting end 101, which allows for a more airtight fit with the instrument tip of the endoscope. Providing a sealing part 111 at the end connected to the instrument tip, and setting the diameter of the sealing part 111 to be no greater than the maximum radial dimension of the sampling instrument (i.e., setting the diameter of the sealing part 111 to be equal to or less than the maximum radial dimension of the sampling instrument), has at least two advantages: Firstly, when the sampling instrument enters the endoscope through the sealing part 111, the sealing part 111 provides support, preventing the sampling instrument from shaking; secondly, during the withdrawal of the sampling instrument from the endoscope, the sealing part 111 scrapes away mucus, other tissues, secretions, etc., from the outer wall of the sampling instrument, thus preventing these substances from entering the collection bag 40 and reducing the entry of impurities other than the sample into the collection bag 40.

[0053] Furthermore, the sample collection device 100 also includes a sample pushing component 20, which is movably disposed within the second channel 12. The sample pushing component 20 and the collection bag 40 are respectively located on both sides of the first channel 11, and the sample pushing component 20 is used to push the sample at the intersection of the first channel 11 and the second channel 12 into the collection bag 40.

[0054] In the above scheme, after the sampling device takes out the sample, the sample is released at the intersection of the first channel 11 and the second channel 12. If the sample does not fall into the collection bag 40 smoothly, the sample pushing component 20 is pushed to move along the axis L of the second channel 12 until the sample successfully falls into the collection bag 40.

[0055] Specifically, the sample pushing component 20 has a rubber pad 22 at the end that contacts the sample, which prevents damage to the sample during the pushing process. A through hole 21 is provided on the main body of the sample pushing component 20. For example, after the sample pushing component 20 has pushed the sample but before returning to its initial state, if other instruments need to enter the endoscope, the sample pushing component 20 can be rotated to connect the through hole 21 with the first channel 11, allowing other instruments to enter the endoscope through the first channel 11 and the through hole 21. When the endoscope is in a negative pressure suction state, the instrument nozzles on the endoscope need to be sealed. This can be done by rotating the sample pushing component 20 to seal the instrument nozzles.

[0056] A second aspect of this application provides an endoscope including a handle 200 and the aforementioned sample collection device 100, the sample collection device 100 being mounted on the handle 200.

[0057] In the above scheme, the sample collection device 100 is connected to the instrument nozzle on the handle 200 through the first connecting end 101, so that the sampling instrument can smoothly enter the handle to complete the sampling.

[0058] The endoscopes used in this application can be bronchoscopes, pyeloscopes, esophagoscopes, gastroscopes, colonoscopes, otoscopes, rhinoscopes, oral endoscopes, laryngoscopes, colposcopes, laparoscopes, arthroscopes, etc. This application does not impose specific limitations on the types of endoscopes.

[0059] It should be noted that, in this document, 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 one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sample collection device (100), characterized in that, For use with an endoscope, the sample collection device (100) includes: The substrate assembly (10) includes a first channel (11) and a second channel (12). The first channel (11) extends through the substrate assembly (10) along a first direction, and one end of the first channel (11) is used to connect with the instrument mouth of the endoscope. A sampling instrument can enter the endoscope through the substrate assembly (10) along the first channel (11) from the end away from the instrument mouth. The second channel (12) extends through the substrate assembly (10) along a second direction, which intersects with the first direction. The first channel (11) and the second channel (12) are connected. One end of the second channel (12) is used to connect with the collection bag (40). A clamping assembly (30) is hinged to the outer peripheral wall of the base assembly (10); and the clamping assembly (30) is used to clamp and fix the collection bag (40) to the base assembly (10); The first channel (11) is provided with a sealing part (111) at one end connected to the endoscope instrument nozzle. The sealing part (111) is a hollow structure. The sealing part (111) is coaxially arranged with the first channel (11). The sealing part (111) communicates with the second channel (12) and extends in a direction away from the second channel (12). The diameter of the sealing part (111) is not greater than the maximum radial dimension of the sampling instrument; The sample collection device (100) further includes a sample pushing component (20), which is movably disposed in the second channel (12). The sample pushing component (20) and the collection bag (40) are located on both sides of the first channel (11), and the sample pushing component (20) is used to push the sample at the intersection of the first channel (11) and the second channel (12) into the collection bag (40).

2. The sample collection device (100) as described in claim 1, characterized in that, The clamping assembly (30) includes clamping arms (31, 32), and a hinge seat (13) is provided on the outer peripheral wall of the base assembly (10). The clamping arm (31) and the clamping arm (32) are symmetrically arranged along the axis of the base assembly (10). The clamping arms (31, 32) are symmetrically provided with hinge parts (311, 321) on both sides. The clamping arms (31, 32) are connected to the hinge seat (13) of the base assembly (10) through the hinge parts (311, 321). The upper end of the clamping arm (31, 32) is provided with a force-applying part (312, 322), and the opening and closing of the clamping arm (31, 32) can be controlled by pressing the force-applying part (312, 322); The lower end of the clamping arm (31, 32) is provided with a clamping part (313, 323), which can be away from or close to the axis of the base assembly (10).

3. The sample collection device (100) as described in claim 2, characterized in that, The shape of the clamping part (313, 323) is adapted to the shape of the lower port (15) of the base assembly (10).

4. The sample collection device (100) as described in claim 2, characterized in that, The two free ends of the clamping part (313, 323) are respectively provided with extensions (3131, 3231), and the extensions (3131, 3231) extend in a direction away from the axis of the base assembly (10).

5. The sample collection device (100) as described in claim 4, characterized in that, When the clamping arms (31, 32) are closed, a gap (3132) is formed between the extension (3131) and the extension (3231), the gap (3132) being used to accommodate the empty portion (42) of the collection bag (40).

6. The sample collection device (100) as described in claim 1, characterized in that, The outer peripheral wall of the substrate component (10) is provided with a receiving groove (14); a sealing strip (43) is provided on the inner wall of the opening (41) of the collection bag (40), and the sealing strip (43) is located in the receiving groove (14) and is connected to the receiving groove (14).

7. The sample collection device (100) as described in claim 2, characterized in that, An elastic element is installed between the hinge portion (311, 321) and the hinge seat (13), and the elastic element can drive the clamping portion (313, 323) to remain closed.

8. An endoscope comprising a handle (200) and a sample collection device (100) as claimed in any one of claims 1-7, the sample collection device (100) being mounted on the handle (200).

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