Sperm upstream tube capable of realizing segmented sampling

Abstract

The utility model discloses a sperm upstream tube capable of realizing segmented sampling, which comprises a first component and at least one second component, and the second component and the first component are coaxially arranged; the first assembly comprises a first shell, a first upper cover, a first bottom cover and at least one first swimming pipeline, one end of the first swimming pipeline penetrates through the first upper cover, and the other end is hermetically connected with the first bottom cover; the second assembly comprises a second shell, a second upper cover, a second bottom cover and a second swimming pipeline. The two ends of the second swimming pipeline penetrate through the second upper cover and the second bottom cover respectively. The first upper cover and the second upper cover are the same in structure and each comprise a clamping ring part formed by protruding upwards, and a rail groove is formed between each clamping ring part and the upper surface of the corresponding upper cover. The second bottom cover comprises a clamping block part which is correspondingly matched with the ring part, and the clamping block part is embedded in the rail groove and can rotate along the rail groove so as to realize communication and isolation between the first swimming pipeline and the second swimming pipeline or between the second swimming pipelines.

Description

Technical Field

[0001] This utility model relates to the field of assisted reproductive technology. More specifically, it relates to an upstream sperm tube capable of segmented sampling. Background Technology

[0002] With the continuous development of assisted reproductive technology, higher demands are being placed on sperm processing and optimization methods. Sperm optimization is a crucial step in human and animal assisted reproductive technologies, and the sperm swim-up method is a commonly used one. However, existing sperm swim-up devices have some shortcomings, which limit the efficiency and quality of sperm processing. First, the bottom of conventional sperm swim-up tubes is rounded, requiring a tube holder for fixation, which is inconvenient to operate. Second, during the handling of the cylindrical swim-up tube, hand movements can easily mix different sperm from upstream and downstream, leading to a reduced proportion of specific sperm segments aspirated.

[0003] In addition, existing sperm screening technologies, such as sedimentation, electrophoresis and flow cytometry, can separate X and Y sperm to some extent, but these methods have problems such as complicated operation, high cost and great damage to sperm. Utility Model Content

[0004] In view of the above problems, one object of this utility model is to provide a sperm upstream tube that can realize group sampling.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sperm upstream tube capable of segmented sampling, comprising:

[0007] A first component and at least one second component, wherein the second component and the first component are coaxially arranged; wherein

[0008] The second component is one in number, and the second component is disposed on top of the first component;

[0009] or

[0010] There are multiple second components, which are stacked sequentially on top of the first component;

[0011] The first component includes a first housing, a first upper cover, a first lower cover, and at least one first swimming pipe located inside the first housing. The first swimming pipe extends along the axial direction of the first housing, with one end penetrating through the first upper cover and the other end sealed to the first lower cover.

[0012] The second component includes a second housing, a second upper cover, a second bottom cover, and a second swimming pipe located inside the second housing, corresponding to the number of the first swimming pipes. The second swimming pipe extends along the axial direction of the second housing, with one end penetrating the second upper cover and the other end penetrating the second bottom cover.

[0013] Wherein, the distance between the axis of the first swimming pipe and the axis of the first top cover is greater than the inner diameter of the first swimming pipe, and the distance between the axis of the second swimming pipe and the axis of the second top cover is greater than the inner diameter of the second swimming pipe.

[0014] The first and second top covers have the same structure, both including an upwardly protruding retaining ring portion, and a track groove is formed between the retaining ring portion and the upper surface of the top cover;

[0015] The second bottom cover includes a locking block that is correspondingly matched with the locking ring. The locking block is fitted into the track groove and can rotate along the track groove to achieve communication and isolation between the first swimming pipe and the second swimming pipe, or between the second swimming pipe and the second swimming pipe.

[0016] Alternatively, the retaining ring portion includes a ring portion formed by an upward protrusion from the upper surface of the cover, and three protrusion portions formed by an end of the ring portion away from the cover extending radially away from the center of the cover. The three protrusion portions are evenly distributed, and there is a gap between adjacent protrusion portions. The track groove is formed between the lower surface of the protrusion portion and the upper surface of the cover.

[0017] The ring portion and the upper cover are coaxially arranged;

[0018] The bottom surface of the second bottom cover includes a downwardly protruding outer ring portion. The end of the outer ring portion away from the second bottom cover extends radially toward the center of the second bottom cover to form the locking block portion. There are three locking blocks, which are set corresponding to the interval area. They rotate into the track groove from the interval area to connect the first component and the second component, or the second component and the second component.

[0019] Alternatively, the sperm upstream tube may also include a first sealing ring;

[0020] The upper surface of the cover includes an isolation ring surrounding the area where the swimming pipe is installed. The isolation ring and the retaining ring are coaxially arranged and located inside the retaining ring.

[0021] A first sealing groove is formed between the isolation ring and the retaining ring, and the first sealing ring is disposed in the first sealing groove.

[0022] Alternatively, the bottom surface of the second bottom cover may include a downwardly protruding pressure ring portion, which is correspondingly fitted to the first sealing groove and abuts against the first sealing ring.

[0023] Alternatively, the second bottom cover may include a downwardly protruding boss in the area corresponding to the second swimming pipe, with the boss and the isolation ring correspondingly fitted together, the boss being fitted into the isolation ring.

[0024] The lower end of the second swimming pipe passes through the boss portion.

[0025] Alternatively, the bottom surface of the boss portion may include a second sealing groove surrounding the lower port of the second swimming pipe, wherein the number of the second sealing grooves is equal to the number of the second swimming pipe.

[0026] The sperm upstream tube also includes a second sealing ring, which is an annular structure and is disposed in the second sealing groove, abutting against the upper surface of the top cover.

[0027] Alternatively, the sperm upstream tube may include two second components, which are stacked on top of the first component.

[0028] The second component connected to the first component is a middle layer second component, which can rotate relative to the first component to adjust the connection and isolation state of the second swimming pipe and the first swimming pipe of the middle layer second component;

[0029] The other second component is the upper second component, which is rotatable relative to the middle second component to adjust the connection and isolation status of the second swimming pipe of the upper second component and the second swimming pipe of the middle second component.

[0030] Alternatively, the first component may be provided with three first swimming pipes, which are evenly distributed around the axis of the first top cover, with gaps between adjacent first swimming pipes.

[0031] The second component is provided with three second swimming pipes, which are evenly distributed around the axis of the second top cover, and there are gaps between adjacent second swimming pipes.

[0032] Alternatively, when the connected first and second swimming pipes, or the second and second swimming pipes, are isolated, the gap between the swimming pipes on the lower level can block the swimming pipes on the upper level, so that the swimming pipes on the upper and lower levels are not connected to each other.

[0033] Alternatively, both the first and second outer shells are cylindrical structures with a through circular opening on their outer peripheral walls, the central axis of which is perpendicular to the central axis of the outer shell.

[0034] The number of circular openings in the first outer shell is twice the number of first swimming tubes provided in the first component;

[0035] The number of circular openings in the second housing is twice the number of second swimming pipes provided in the second component.

[0036] The beneficial effects of this utility model are as follows:

[0037] To address the technical problems existing in the prior art, this utility model provides a sperm upstream tube capable of segmented sampling. Through the combined use of a first component and a second component, segmented isolation of sperm is achieved. Applied to swimming-based sperm separation experiments, it improves the efficiency and quality of sperm screening, reduces instability factors during operation, avoids damage and loss to sperm, and meets the requirements for sperm processing in assisted reproductive technology. The sperm upstream tube obtained by combining the first and second components has a flat bottom and can be placed independently, avoiding confusion between upstream and downstream sperm caused by movement and increasing the extraction rate of specific sperm segments. Sperm isolation is achieved by rotation after swimming, making the operation simple and with low error. The number of second components can be increased as needed to suit various experimental requirements. It is a simple, easy-to-use sperm upstream tube that can stably achieve segmented sperm isolation sampling. Attached Figure Description

[0038] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0039] Figure 1 This diagram illustrates the structure of the first component provided in an embodiment of the present invention.

[0040] Figure 2 This is a three-dimensional bottom view of the first component provided in an embodiment of the present invention.

[0041] Figure 3 This is a top view of the first component provided in an embodiment of the present invention.

[0042] Figure 4 This diagram illustrates the structure of the second component provided in an embodiment of the present invention.

[0043] Figure 5 A three-dimensional bottom view of the second component provided in an embodiment of the present invention is shown.

[0044] Figure 6A top view of the second component provided in an embodiment of the present invention is shown.

[0045] Figure 7 This diagram illustrates the structure of the three-layer sperm upstream tube provided in an embodiment of the present invention.

[0046] Figure 8 This diagram shows a comparison of the connected and isolated states of the swimming pipe provided in this embodiment of the invention. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 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 utility model based on the specific circumstances.

[0049] In this invention, unless otherwise expressly specified and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features not being in direct contact but through another feature between them.

[0050] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0051] The sperm swimming experiment involves adding different small molecules, changing the pH value, or altering other physiological and biochemical conditions to enrich X or Y sperm in the upper or lower layers of the swimming tube. After sampling in the swimming experiment, sperm purity and motility verification experiments are conducted. Therefore, a simple, easy-to-use upstream tube that can stably achieve sperm segmentation and sampling is a necessary condition to ensure the accuracy of the experimental structure.

[0052] To address the shortcomings of existing technologies, this invention provides a sperm upstream tube capable of segmented sampling, combined with... Figure 1-8 As shown, the sperm upstream tube includes a first component 1 and at least one second component 2, wherein the second component 2 and the first component 1 are coaxially arranged; wherein

[0053] The second component 2 is one in number, and the second component 2 is set on top of the first component 1 and stacked with the first component 1.

[0054] or

[0055] There are multiple second components 2, which are stacked on top of the first component 1.

[0056] like Figure 1-3 As shown, the first component 1 includes a first outer shell 11, a first upper cover 12, a first bottom cover 13, and at least one first swimming tube 14 located inside the first outer shell 11. The first swimming tube 14 extends along the axial direction of the first outer shell 11, with one end penetrating through the first upper cover 12 and the other end sealed to the first bottom cover 13, forming a sealed cavity structure at the lower end, which can accommodate sperm and ensure that sperm will not leak.

[0057] like Figure 4-6 As shown, the second component 2 includes a second outer shell 21, a second upper cover 22, a second bottom cover 23, and a second swimming pipe 24 located inside the second outer shell 21, corresponding to the number of the first swimming pipes 14. The second swimming pipe 24 extends along the axial direction of the second outer shell 21, with one end penetrating the second upper cover 22 and the other end penetrating the second bottom cover 23.

[0058] The distance between the axis of the first swimming pipe 14 and the axis of the first top cover 12 is greater than the inner diameter of the first swimming pipe 14; the distance between the axis of the second swimming pipe 24 and the axis of the second top cover 22 is greater than the inner diameter of the second swimming pipe 24.

[0059] The first top cover 12 and the second top cover 22 have the same structure, including an upwardly protruding retaining ring 31, and a track groove 32 is formed between the retaining ring 31 and the upper surface of the top cover.

[0060] like Figure 5 As shown, the second bottom cover 23 includes a locking block 231 that is correspondingly and cooperating with the locking ring 31. The locking block 231 is fitted into the track groove 32 and can rotate along the track groove 32 to realize the connection and isolation between the first swimming pipe 14 and the second swimming pipe 24, or between the second swimming pipe 24 and the second swimming pipe 24.

[0061] In a specific embodiment, such as Figure 1 as well as Figure 3As shown, the retaining ring portion 31 includes a ring portion 311 formed by protruding upward from the upper surface of the upper cover, and three protrusion portions 312 formed by extending radially from one end of the ring portion 311 away from the upper cover in a direction away from the center of the upper cover. The three protrusion portions 312 are evenly distributed, and there is a gap area 313 between adjacent protrusion portions 312. A track groove 32 is formed between the lower surface of the protrusion portion 312 and the upper surface of the upper cover.

[0062] In this embodiment, the ring portion 311 and the upper cover are coaxially arranged, and the resulting track groove 32 is also coaxial with the upper cover. When the second component 2 rotates relative to the first component 1 or the second component 2 through the locking portion 231, its rotation axis coincides with the central axis of the upper cover.

[0063] Furthermore, such as Figure 5 As shown, the bottom surface of the second bottom cover 23 includes a downwardly protruding outer ring portion 232. One end of the outer ring portion 231 away from the second bottom cover 23 extends radially toward the center of the second bottom cover 23 to form a locking block portion 231. There are three locking blocks 231, which are provided corresponding to the interval area 313. When the locking ring portion 31 and the locking block portion 231 are connected, the locking block portion 231 enters the interval area 313 and then rotates into the track groove 32 to connect the first component 1 and the second component 2, or the second component 2 and the second component 2. After the connection is completed, rotating the second component 2 located on the upper layer can adjust the communication and isolation state between its second swimming pipe 24 and the swimming pipe located on the lower layer.

[0064] In one specific embodiment, the sperm upstream tube further includes a first sealing ring (not shown), which is an annular structure. The upper surfaces of both the first upper cover 12 and the second upper cover 22 include an isolation ring 33 surrounding the area of ​​the swimming tube. The isolation ring 33 and the retaining ring portion 31 are coaxially arranged and located inside the retaining ring portion 31, serving to isolate the swimming tube from the outside. A first sealing groove 34 with an annular structure is formed between the isolation ring 33 and the retaining ring portion 31. The first sealing ring is disposed within the first sealing groove 34 to ensure the sealing at the connection between the second component 2 and the first component 1 or the second component 2.

[0065] In one example, the first sealing ring is an O-ring silicone seal with an outer diameter of 40 mm and an inner diameter of 36 mm.

[0066] To further improve the sealing performance at the connection between the second component 2 and the first component 1 or the second component 2, in a specific embodiment, such as Figure 5As shown, the bottom surface of the second bottom cover 23 includes a downwardly protruding pressure ring 233. The pressure ring 233 and the first sealing groove 34 are correspondingly fitted. When the second component 2 is connected to the first component 1, the pressure ring 233 is fitted into the first sealing groove 34 of the first component 1 and abuts against the first sealing ring. When the second component 2 is connected to the first component 2, the pressure ring 233 is fitted into the first sealing groove 34 of the second component 2 and abuts against the first sealing ring.

[0067] In one specific embodiment, the area of ​​the second bottom cover 23 corresponding to the second swimming pipe 24 includes a downwardly protruding boss 234, which is correspondingly fitted with the isolation ring 33, and the lower end of the second swimming pipe 24 passes through the boss 234. When the second component 2 and the first component 1 are connected, the boss 234 is fitted into the isolation ring 33 of the first component 1, so that the second swimming pipe 24 and the first swimming pipe 14 can be connected; when the second component 2 and the second component 2 are connected, the boss 234 of the upper-layer second component 2 is fitted into the isolation ring 33 of the lower-layer second component 2, so that the second swimming pipes 24 in the upper and lower layers can be connected. Furthermore, a groove 235 for accommodating the isolation ring 33 is also formed between the boss 234 and the pressure ring 233.

[0068] In one specific embodiment, the bottom surface of the boss portion 234 includes a second sealing groove 236 disposed around the outer periphery of the lower port of the second swimming pipe 24. The number of second sealing grooves 236 is equal to the number of second swimming pipes 24, and each lower port of the second swimming pipe 24 is provided with a second sealing groove 236.

[0069] The sperm upstream tube also includes a second sealing ring 4, which is an annular structure disposed within the second sealing groove 236 and abuts against the upper surface of the top cover. The second sealing ring 4 prevents sperm leakage and ensures the sealing of the sperm upstream tube when the second component 2 rotates.

[0070] In one example, the second sealing ring 4 is an O-ring silicone seal with an outer diameter of 12 mm and an inner diameter of 8 mm.

[0071] When using sperm upstream tubes, the number of components 2 can be selected according to requirements for assembly; generally, it is a three-layer structure. For example... Figure 7As shown in the figure, the three-layer sperm upstream tube includes a first component 1 and two second components 2. The two second components 2 are stacked above the first component 1. The second component 2 connected to the first component 1 is the middle second component 2A, and the middle second component 2A can rotate relative to the first component 1 to adjust the alignment state between the second swimming pipeline 24 of the middle second component 2A and the first swimming pipeline 14, so as to achieve the connection and isolation states between the middle and lower swimming pipelines. The other second component 2 is the upper second component 2B, and the upper second component 2B can rotate relative to the middle second component 2A to adjust the alignment state between the second swimming pipeline 24 of the upper second component 2B and the second swimming pipeline 24 of the middle second component 2A, so as to achieve the connection and isolation states between the upper and middle swimming pipelines.

[0072] In the three-layer sperm upstream tube, during initial assembly, the swimming pipelines of the first component 1, the middle second component 2A, and the upper second component 2B are aligned and penetrated to form an upstream test tube. During the experiment, the processed semen diluent is injected into the upstream test tube. After the swimming introduction, the middle second component 2A and the upper second component 2B are respectively rotated so that the swimming pipelines of the upper, middle, and lower layers are in an isolated state, thereby isolating the separated upper, middle, and lower layer sperm, and finally using a pipette to collect layer by layer. It should be noted that when the middle second component 2A is rotated, the upper second component 2B rotates together with the middle second component 2A. When the upper second component 2B is rotated, only the upper second component 2B rotates. Regarding the axial heights of the first component 1 and each layer of the second component 2, the operator can set them to the same size or different sizes according to requirements, and specifically adjust according to the test content.

[0073] In a specific embodiment, the first component 1 is provided with three first swimming pipelines 14. The three first swimming pipelines 14 are evenly distributed in a "pin" shape centered on the axis of the first upper cover 12, and there are gaps between adjacent first swimming pipelines 14. Similarly, the second component 2 is provided with three second swimming pipelines 24. The three second swimming pipelines 24 are evenly distributed in a "pin" shape centered on the axis of the second upper cover 22, and there are gaps between adjacent second swimming pipelines 24.

[0074] In this embodiment, when the connected first swimming pipeline 14 and second swimming pipeline 24, or the two connected second swimming pipelines 24 are in an isolated state, as Figure 8 shown, Figure 8 Figure a shows the connected state, and figure b shows the isolated state. The upper layer is the second component 2, and the lower layer is the first component 1. Figure 8 In figure b, the blue color represents the second swimming pipeline 24 of the second component 位于上一层的第二组件2, and the red dotted line represents the first swimming pipeline 14 of the first component 1 located in the lower layer. Comparing Figure 8 figure a and Figure 8b shows that the gaps between the swimming tubes in the lower layer can block the swimming tubes in the upper layer, so that the swimming tubes in the upper and lower layers are not connected to each other, thus achieving the separation of sperm from different layers.

[0075] In one specific embodiment, both the first outer shell 11 and the second outer shell 21 are cylindrical structures. The first upper cover 12 is fixed to the top of the first outer shell 11, and the first bottom cover 13 is fixed to the bottom of the first outer shell 11. The second upper cover 22 is fixed to the top of the second outer shell 21, and the second bottom cover 23 is fixed to the bottom of the second outer shell 21.

[0076] Since upstream tests are generally conducted in a gas incubator at 37°C, in order to facilitate the circulation of hot air to heat the swimming pipe, in a specific embodiment, a through circular opening 5 is provided on the outer peripheral wall of the first outer shell 11 and the second outer shell 21. The central axis of the circular opening 5 is perpendicular to the central axis of the outer shell in which it is located, so that the gas can directly contact the pipe wall of the swimming pipe.

[0077] Furthermore, the circular openings 5 ​​also serve a rotational positioning function. Specifically, the number of circular openings 5 ​​on the first outer shell 11 is twice the number of first swimming pipes 14 provided in the first component 1. In this embodiment, the first component 1 has three first swimming pipes 14, and the first outer shell 11 has six circular openings 5. Correspondingly, the number of circular openings 5 ​​on the second outer shell 21 is twice the number of second swimming pipes 24 provided in the second component 2. In this embodiment, the second component 2 has three second swimming pipes 24, and the second outer shell 21 has six circular openings 5. When rotating the second component 2, it is only necessary to shift the alignment of the circular openings 5 ​​with the circular openings 5 ​​of the next layer to the next circular opening 5.

[0078] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A sperm upstream tube that enables fractionated sampling, characterized by, include: A first component and at least one second component, wherein the second component and the first component are coaxially arranged; in The second component is one in number, and the second component is disposed on top of the first component; or There are multiple second components, which are stacked sequentially on top of the first component; The first component includes a first housing, a first upper cover, a first lower cover, and at least one first swimming pipe located inside the first housing. The first swimming pipe extends along the axial direction of the first housing, with one end penetrating through the first upper cover and the other end sealed to the first lower cover. The second component includes a second housing, a second upper cover, a second bottom cover, and a second swimming pipe located inside the second housing, corresponding to the number of the first swimming pipes. The second swimming pipe extends along the axial direction of the second housing, with one end penetrating the second upper cover and the other end penetrating the second bottom cover. Wherein, the distance between the axis of the first swimming pipe and the axis of the first top cover is greater than the inner diameter of the first swimming pipe, and the distance between the axis of the second swimming pipe and the axis of the second top cover is greater than the inner diameter of the second swimming pipe. The first and second top covers have the same structure, both including an upwardly protruding retaining ring portion, and a track groove is formed between the retaining ring portion and the upper surface of the top cover; The second bottom cover includes a locking block that is correspondingly matched with the locking ring. The locking block is fitted into the track groove and can rotate along the track groove to achieve communication and isolation between the first swimming pipe and the second swimming pipe, or between the second swimming pipe and the second swimming pipe.

2. The sperm upstream tube of claim 1, wherein, The retaining ring includes a ring portion that protrudes upward from the upper surface of the cover, and three protrusion portions that extend radially away from the upper cover from one end of the ring portion away from the upper cover in a direction away from the center of the upper cover. The three protrusion portions are evenly distributed, and there is a gap between adjacent protrusion portions. The track groove is formed between the lower surface of the protrusion portion and the upper surface of the upper cover. The ring portion and the upper cover are coaxially arranged; The bottom surface of the second bottom cover includes a downwardly protruding outer ring portion. The end of the outer ring portion away from the second bottom cover extends radially toward the center of the second bottom cover to form the locking block portion. There are three locking blocks, which are set corresponding to the interval area. They rotate into the track groove from the interval area to connect the first component and the second component, or the second component and the second component.

3. The sperm upstream tube of claim 1, wherein, The sperm upstream tube also includes a first sealing ring; The upper surface of the cover includes an isolation ring surrounding the area where the swimming pipe is installed. The isolation ring and the retaining ring are coaxially arranged and located inside the retaining ring. A first sealing groove is formed between the isolation ring and the retaining ring, and the first sealing ring is disposed in the first sealing groove.

4. The sperm upstream tube of claim 3, wherein, The bottom surface of the second bottom cover includes a downwardly protruding pressure ring portion, which is correspondingly fitted to the first sealing groove and abuts against the first sealing ring.

5. The sperm upstream tube of claim 3, wherein, The area of ​​the second bottom cover corresponding to the second swimming pipe includes a downwardly protruding boss, which is correspondingly and fitted with the isolation ring, and the boss is fitted into the isolation ring. The lower end of the second swimming pipe passes through the boss portion.

6. The sperm upstream tube of claim 5, wherein, The bottom surface of the boss includes a second sealing groove arranged around the outer periphery of the lower port of the second swimming pipe, and the number of the second sealing grooves is equal to the number of the second swimming pipe; The sperm upstream tube also includes a second sealing ring, which is an annular structure and is disposed in the second sealing groove, abutting against the upper surface of the top cover.

7. The sperm upstream tube of claim 1, wherein, The sperm upstream tube includes two second components, which are stacked on top of the first component; The second component connected to the first component is a middle layer second component, which can rotate relative to the first component to adjust the connection and isolation state of the second swimming pipe and the first swimming pipe of the middle layer second component; The other second component is the upper second component, which is rotatable relative to the middle second component to adjust the connection and isolation status of the second swimming pipe of the upper second component and the second swimming pipe of the middle second component.

8. The sperm upstream tube of claim 1, wherein, The first component is provided with three first swimming pipes, which are evenly distributed around the axis of the first top cover, and there are gaps between adjacent first swimming pipes. The second component is provided with three second swimming pipes, which are evenly distributed around the axis of the second top cover, and there are gaps between adjacent second swimming pipes.

9. The sperm upstream tube of claim 8, wherein, When the first and second swimming pipes are connected, or when the second and second swimming pipes are isolated, the gap between the swimming pipes on the lower level can block the swimming pipes on the upper level, so that the swimming pipes on the upper and lower levels are not connected to each other.

10. The sperm upstream tube of claim 1, wherein, Both the first and second outer shells are cylindrical structures with a through circular opening on their outer peripheral walls. The central axis of the circular opening is perpendicular to the central axis of the outer shell. The number of circular openings in the first outer shell is twice the number of first swimming tubes provided in the first component; The number of circular openings in the second housing is twice the number of second swimming pipes provided in the second component.

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