Cervical sampling device

Abstract

The utility model discloses a cervix uteri sampling device. The cervix uteri sampling device comprises an operating rod, a first sampling structure and a second sampling structure, the operating rod is provided with a first end and a second end which are opposite in the first direction, the first sampling structure comprises a first base body and a plurality of first brushes, the first base body is inserted into the first end in an interference mode in the first direction, the first brushes are arranged in the direction surrounding the first direction, and the first brushes are arranged on the peripheral side of the first base body. The second sampling structure comprises two second base bodies which are oppositely arranged in the second direction and a plurality of second brushes, the two second base bodies are connected, the two second base bodies are integrally arranged on the periphery of the first end in a sliding and sleeving mode, and the second brushes are arranged on the sides, away from the second end, of the second base bodies; according to the cervix uteri sampling device, sampling personnel can sample the cervix uteri inside the cervix uteri and the cervix uteri fornix at the same time, the sampling operation difficulty is small, and the sampling position accuracy is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a cervical sampling device. Background Art

[0002] When sampling cervical cells, a cervical sampling device is usually required. Specifically, the cervical sampling device usually includes an operating rod and a brush. The sampling personnel hold the operating rod to rotate the brush to rub and contact the surface of the cervix, so that some cervical exfoliated cells adhere to the brush, thereby achieving cervical cell sampling.

[0003] However, when different positions of the cervix need to be evaluated (e.g. Figure 1 When separately sampling the cells in the cervical canal 20 and the cervical vault 21 as shown, different cervical sampling devices need to be used to respectively aim at different positions of the cervix for sampling. On the one hand, the sampling times are large, the operation of the sampling personnel is cumbersome and the sampling time of the sampled personnel is long. On the other hand, the sampling personnel need to manually control the different positions of the cervix, the sampling operation is difficult, and the accuracy of the sampling position is low. Utility Model Content

[0004] The utility model aims to provide a cervical sampling device, which can allow sampling personnel to sample the cervical canal and the cervical fornix at the same time, and the sampling operation is less difficult and the sampling position is more accurate.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A cervical sampling device is provided, comprising:

[0007] An operating rod having a first end and a second end opposite to each other in a first direction;

[0008] A first sampling structure, the first sampling structure comprising a first base and a plurality of first brushes, the first base being inserted at the first end by interference along the first direction, the plurality of first brushes being arranged along a direction surrounding the first direction, and the plurality of first brushes being arranged at the peripheral side of the first base; and

[0009] A second sampling structure, the second sampling structure comprises two second bases and a plurality of second brushes arranged opposite to each other along a second direction, the two second bases are connected, and the two second bases as a whole can be slidably sleeved on the outer periphery of the first end, and the plurality of second brushes are arranged on a side of the second base away from the second end, and at least part of the second brushes are located on the outer periphery of the first base;

[0010] Wherein, the first direction is the length extension direction of the operating rod, and the second direction is perpendicular to the first direction.

[0011] As a preferred technical solution of the cervical sampling device, the second base body has two opposite side surfaces along a third direction, and the two side surfaces are parallel, wherein the third direction is perpendicular to the first direction and the second direction; or,

[0012] One side surface of the second base body facing away from the second end and close to the first base body is a sector with an avoidance notch.

[0013] As a preferred technical solution of the cervical sampling device, a guiding portion is provided at one end of the first base body away from the operating rod, and the surface of the guiding portion away from the operating rod includes a conical surface, a semi-elliptical spherical surface or a hemispherical surface; and / or,

[0014] A limiting portion is convexly provided on the outer periphery of the first base body, and the limiting portion can abut against one side surface of the second base body provided with the second brush, and all the first brushes are located on the side of the limiting portion facing away from the second base body; and / or,

[0015] In the direction perpendicular to the first direction, the maximum dimension of the first sampling structure is d1, and 0.5 cm ≤ d1 ≤ 1.5 cm.

[0016] As a preferred technical solution of the cervical sampling device, in the direction perpendicular to the first direction, the farthest distance between the edge of the second base body and the central axis of the operating rod is d2, and 1.25 cm ≤ d2 ≤ 1.75 cm.

[0017] As a preferred technical solution of the cervical sampling device, the length direction of the first brush is perpendicular to the first direction; and / or,

[0018] The length direction of the second brush is parallel to the first direction.

[0019] As a preferred technical solution of the cervical sampling device, in the direction from the second end to the first end, the lengths of the first brushes arranged in sequence gradually decrease; and / or,

[0020] The second base body includes a first portion and a second portion, the second portion is connected to the side surface of the first portion away from the first base body, the lengths of the second brushes provided on the first portion are equal, and at least part of the second brushes provided on the first portion are located on the outer periphery of the second sampling structure. In the direction from the first portion to the second portion, the lengths of the second brushes provided on the second portion gradually increase.

[0021] As a preferred technical solution of the cervical sampling device, along the first direction, the maximum distance between the first brush and the second base is s, where 2.5 cm ≤ s ≤ 3.5 cm. The protruding height of the second brush provided on the first part from the first part is h1, where 0.5 cm ≤ h1 ≤ 1.5 cm. The maximum protruding height of the second brush provided on the second part from the second part is h2, where h2 > h1 and 1.5 cm ≤ h2 ≤ 2.5 cm.

[0022] As a preferred technical solution of the cervical sampling device, the operating rod is provided with a through hole that penetrates through the first end and the second end at both ends, and the first base is press-fitted into the through hole; and / or,

[0023] The second base is press-fitted over the first end.

[0024] As a preferred technical solution of the cervical sampling device, at least a part of the outer peripheral surface of the operating rod is a friction surface.

[0025] As a preferred technical solution of the cervical sampling device, the outer peripheral surface of the operating rod includes a first friction surface and a second friction surface that are arranged at intervals. The first friction surface is close to the first end, and the second friction surface is close to the second end.

[0026] The beneficial effects of the present utility model are as follows:

[0027] By making the cervical sampling device include a first sampling structure and two second sampling structures that are oppositely arranged along the second direction, such that the first sampling structure is located at the connection of the two second bases. Then, when the first end, the first sampling structure, and the second sampling structure enter the vagina of the person to be sampled, the first sampling structure can be automatically aligned with the cervical canal that is roughly located on the central axis of the vagina, and the part of the second sampling structure that is located on the outer periphery of the first sampling structure can be automatically aligned with the cervical fornix close to the inner wall of the vagina. Thus, the sampler can rotate and frictionally contact the inner wall surface of the cervical canal with the first brush by holding the operating rod, and at the same time rotate and frictionally contact the surface of the cervical fornix with the second brush, thereby realizing separate sampling of the cells in the cervical canal and at the cervical fornix of the cervix. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following further describes the present utility model in detail with reference to the drawings and embodiments.

[0029] Figure 1 It is a schematic diagram of the human body structure of the cervical canal and its vicinity.

[0030] Figure 2 It is a schematic three-dimensional structure diagram of the cervical sampling device according to an embodiment.

[0031] Figure 3 is Figure 2 An enlarged schematic view of the position M in

[0032] Figure 4 is Figure 2 A partial sectional view of the cervical sampling device shown in

[0033] Figure 5 is Figure 4 An enlarged schematic view of the position N in

[0034] Figure 6 is Figure 2 A structural decomposition schematic view of the first sampling structure and the second sampling structure shown in

[0035] Figure 7 is Figure 2 A three - dimensional structure schematic view of the second sampling structure shown in

[0036] Figure 8 is Figure 7 A partial sectional view of the second sampling structure shown in

[0037] Figure 9 is a three - dimensional structure schematic view of the cervical sampling device according to another embodiment.

[0038] In the figure:

[0039] 1. Cervical sampling device; 10. Operating rod; 101. First end; 102. Second end; 103. Through hole; 104. First friction surface; 105. Second friction surface; 11. First sampling structure; 110. First base; 1101. Limiting part; 111. First brush; 112. Guiding part; 12. Second sampling structure; 120. Second base; 1200. Avoidance notch; 1201. First part; 1202. Second part; 1203. Connecting part; 121. Second brush;

[0040] 20. Cervical canal; 201. Cervical orifice; 21. Cervical fornix. Detailed implementation mode

[0041] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] like Figures 2 to 5 As shown, the utility model provides a cervical sampling device 1, comprising an operating rod 10, a first sampling structure 11 and a second sampling structure 12. The operating rod 10 has a first end 101 and a second end 102 opposite to each other along a first direction S1. The first sampling structure 11 includes a first base 110 and a plurality of first brushes 111. The first base 110 is inserted in the first end 101 by interference fit along the first direction S1. The plurality of first brushes 111 are arranged in a direction surrounding the first direction S1, and the plurality of first brushes 111 are arranged on the peripheral side of the first base 110. The second sampling structure 12 includes two second bases 120 and a plurality of second brushes 121 opposite to each other along the second direction S2. The two second bases 120 are connected, and the two second bases 120 can be slidably sleeved on the outer periphery of the first end 101 as a whole. The plurality of second brushes 121 are arranged on a side of the second base 120 away from the second end 102, and at least part of the second brushes 121 are located on the outer periphery of the first base 110. The first direction S1 is the length extension direction of the operating rod 10, and the second direction S2 is perpendicular to the first direction S1.

[0045] By making the cervical sampling device 1 include a first sampling structure 11 and two second sampling structures 12 oppositely arranged along the second direction S2, such that the first sampling structure 11 is located at the connection of the two second substrates 120. Further, when the first end 101, the first sampling structure 11 and the second sampling structure 12 enter the vagina of the person to be sampled, the first sampling structure 11 can be automatically aligned with the cervical orifice 201 that is approximately located on the central axis of the vagina, and the part of the second sampling structure 12 located on the outer periphery of the first sampling structure 11 can be automatically aligned with the cervical fornix 21 close to the vaginal inner wall. Thus, the sampler can rotate and frictionally contact the inner wall surface of the cervical canal 20 by holding the operating rod 10, and at the same time rotate and frictionally contact the surface of the cervical fornix 21 with the second brush 121, thereby realizing the separate sampling of the cells in the cervical canal 20 and at the cervical fornix 21 of the cervix simultaneously.

[0046] Optionally, the first substrate 110 can be a strip-shaped structure whose own length extension direction is parallel to the first direction S1, so as to facilitate the arrangement of the first brush 111 along the first direction S1, such that when a part of the first sampling structure 11 is located inside the cervical canal 20, the first brush 111 can be arranged along the extension direction of the cervical canal 20.

[0047] In the direction perpendicular to the first direction S1, the maximum dimension of the first sampling structure 11 is d1. In order to make the first sampling structure 11 suitable for sampling the inner wall of the cervical canal 20, the maximum dimension d1 of the first sampling structure 11 can be slightly larger than the normal diameter of the cervical canal 20, but not too large, so that the second brush 121 can abut against the inner wall of the cervical canal 20 in a state of undergoing a certain elastic deformation. Based on this, optionally, in the direction perpendicular to the first direction S1, the maximum dimension d1 of the first sampling structure 11 can satisfy: 0.5 cm ≤ d1 ≤ 1.5 cm. For example, the dimension d1 can be 0.5 cm, 0.6 cm, 0.7 cm, 0.8 cm, 0.9 cm, 1 cm, 1.1 cm, 1.2 cm, 1.3 cm, 1.4 cm or 1.5 cm, etc.

[0048] Please combine Figure 6 As shown, optionally, a guiding portion 112 is provided at one end of the first substrate 110 away from the operating rod 10. The surface of the guiding portion 112 away from the operating rod 10 includes a conical surface, a semi-ellipsoidal surface or a hemispherical surface, so that the surface of the guiding portion 112 away from the operating rod 10 can abut against the cervical orifice 201 to guide the first substrate 110 and the first brush 111 into the cervical canal 20.

[0049] Optionally, a limiting portion 1101 is convexly provided on the outer periphery of the first base 110, and the limiting portion 1101 can abut against a side surface of the second base 120 provided with the second brush 121, and all the first brushes 111 are located on the side of the limiting portion 1101 away from the second base 120, so that the relative position of the first base 110 and the second base 120 when both are installed on the operating rod 10 can be limited by the limiting portion 1101, so that the relative position of the first brush 111 and the second brush 121 is more precise, which can improve the accuracy of the collection position of the first brush 111 collecting cells in the cervical canal 20 and the second brush 121 collecting cells at the cervical vault 21 at the same time.

[0050] Optionally, the length direction of the first brush 111 is perpendicular to the first direction S1, so that during the sampling process, the length direction of the first brush 111 can be roughly perpendicular to the inner wall of the cervical canal 20, so that the first brush 111 has a greater contact force with the inner wall of the cervical canal 20, which can improve the success rate of cell collection from the inner wall of the cervical canal 20.

[0051] Optionally, along the direction from the second end 102 to the first end 101, the lengths of the first brushes 111 arranged in sequence gradually decrease. Since the first sampling structure 11 includes first brushes 111 of multiple different lengths, the first sampling structure 11 is suitable for collecting cells from the inner wall of the cervical canal 20 with different diameters. Since the multiple first brushes 111 are arranged in the order of decreasing length along the direction from the second end 102 to the first end 101, the first brush 111 with a longer length will not hinder the first brush 111 with a smaller length from contacting the inner wall of the cervical canal 20, so that the first sampling structure 11 has a better collection effect on the inner wall of the cervical canal 20 with different diameters.

[0052] Along the first direction S1, the farthest distance between the first brush 111 and the second base 120 is s. In order to enable the first brush 111 to fully extend into the cervical canal 20, the distance s can be larger. However, in order to reduce the possibility of the first brush 111 hitting other non-target collection positions during the sampling process, so as to improve the accuracy of the cell sampling position and avoid harm to the user, the distance s cannot be too large. Based on this, optionally, the farthest distance s between the first brush 111 and the second base 120 can satisfy: 2.5cm≤s≤3.5cm. For example, the distance s can be 2.5cm, 2.6cm, 2.7cm, 2.8cm, 2.9cm, 3cm, 3.1cm, 3.2cm, 3.3cm, 3.4cm or 3.5cm, etc.

[0053] like Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, optionally, the longitudinal direction of the second brush 121 may be parallel to the first direction S1, so that during the sampling process, the longitudinal direction of the second brush 121 can be substantially perpendicular to the surface of the cervical fornix 21, so that the second brush 121 has a greater abutting force on the surface of the cervical fornix 21, and the success rate of cell collection at the cervical fornix 21 can be improved.

[0054] Since the outer peripheral edge of the cervical fornix 21 is shaped such that it is farther away from the vaginal orifice as it approaches the edge, based on this, optionally, the second substrate 120 includes a first portion 1201 and a second portion 1202. The second portion 1202 is connected to the side of the first portion 1201 away from the first substrate 110. The lengths of the second brushes 121 provided on the first portion 1201 are equal, and at least some of the second brushes 121 provided on the first portion 1201 are located on the outer periphery of the second sampling structure 12. Along the direction from the first portion 1201 to the second portion 1202, the lengths of the second brushes 121 provided on the second portion 1202 gradually increase, so that the end positions of the second brushes 121 on the second portion 1202 are more adapted to the surface shape of the outer peripheral edge of the cervical fornix 21. At the same time, the end positions of the second brushes 121 on the first portion 1201 are more adapted to the surface shape of the part of the cervical fornix 21 close to the cervical canal 20, so as to effectively increase the contact area between the second brush 121 and the cervical fornix 21 during the sampling process, and further improve the success rate of cell collection at the cervical fornix 21.

[0055] Among them, for the convenience of observation Figure 7 and Figure 8 The junction between the first portion 1201 and the second portion 1202 is shown by a dotted line in the figure. It can be understood that this dotted line is only used to indicate the junction position between the first portion 1201 and the second portion 1202, and does not represent the actual structural shape.

[0056] The protruding height h1 of the second brush 121 provided on the first portion 1201 protruding from the first portion 1201 is such that in order for the second brush 121 to be able to apply a relatively large abutting force to the surface of the cervical fornix 21 when abutting against the surface of the cervical fornix 21 to improve the success rate of cell collection, the height h1 can be relatively small. However, if the height h1 is too small, it will cause the second brush 121 to apply too large an abutting force when abutting against the surface of the cervical fornix 21, which may cause harm to the person being sampled. Based on this, optionally, the protruding height h1 of the second brush 121 provided on the first portion 1201 protruding from the first portion 1201 may satisfy: 0.5 cm ≤ h1 ≤ 1.5 cm. For example, the height h1 may be 0.5 cm, 0.6 cm, 0.7 cm, 0.8 cm, 0.9 cm, 1 cm, 1.1 cm, 1.2 cm, 1.3 cm, 1.4 cm or 1.5 cm, etc.

[0057] The maximum protruding height of the second brush 121 protruding from the second part 1202 is h2. In order to make the end position of the second brush 121 more adapted to the surface shape at the edge of the cervical vault 21, h2 should be greater than h1 and not too large. Based on this, optionally, the maximum protruding height h2 of the second brush 121 protruding from the second part 1202 can satisfy: h2>h1 and 1.5cm≤h2≤2.5cm. For example, the height h2 can be 1.5cm, 1.6cm, 1.7cm, 1.8cm, 1.9cm, 2cm, 2.1cm, 2.2cm, 2.3cm, 2.4cm or 2.5cm, etc.

[0058] Along the direction perpendicular to the first direction S1, the maximum distance between the edge of the second substrate 120 and the central axis of the operating rod 10 is d2. In order to prevent the second substrate 120 from scratching the sampled person during the collection process, the distance d2 needs to be slightly smaller than the radius of the vagina. However, if the distance d2 is too small, it will cause the second brush 121 located at the edge of the second substrate 120 to be difficult to contact the edge of the cervical vault 21. Based on this, optionally, the maximum distance d2 between the edge of the second substrate 120 and the central axis of the operating rod 10 may satisfy: 1.25cm≤d2≤1.75cm. For example, the distance d2 may be 1.25cm, 1.3cm, 1.35cm, 1.4cm, 1.45cm, 1.5cm, 1.55cm, 1.6cm, 1.65cm, 1.7cm or 1.75cm, etc.

[0059] The second substrate 120 can be of a variety of different shapes. Optionally, the second substrate 120 has two side surfaces opposite to each other along a third direction S3, and the two side surfaces are parallel, wherein the third direction S3 is perpendicular to the first direction S1 and the second direction S2. In other words, the second substrate 120 has a substantially rectangular shape on one side surface facing away from the second end 102, so that the two second substrates 120 structures are connected to form a flat overall shape, which facilitates the second substrate 120 to be stuck on the wall of the sampling collection tube when inserted into the sampling collection tube, so as to provide assistance in the process of separating the second sampling structure 12 from the operating rod 10.

[0060] Optionally, the surface of the second substrate 120 facing away from the operating rod 10 may be an arcuate surface, so that the shape of the surface of the second substrate 120 is more adapted to the inner wall shape of the vagina, which can reduce the possibility of the second substrate 120 scratching the user during the sampling process.

[0061] Optionally, the side surface of the second base 120 facing away from the second end 102 is fan-shaped and has an avoidance gap 1200 near the first base 110. The avoidance gap 1200 is used to avoid the operating rod 10, so that the area of the second brush 121 is more adapted to the shape of the cervical vault 21.

[0062] As Figure 9 shown, furthermore, the surface of one side of the second substrate 120 facing away from the second end 102 may be semi-circular with an avoidance notch 1200 in the part close to the first substrate 110. The surfaces of one sides of the two second substrates 120 facing away from the second end 102 are connected to form a circle with a notch in the middle, and the notch is formed by docking of the two avoidance notches 1200. Thus, the gap between the two second substrates 120 is small, which can make the contact area between the second brush 121 and the cervical fornix 21 large, and is conducive to improving the success rate of cell collection at the cervical fornix 21.

[0063] Please refer to again together with Figure 2 、 Figure 4 and Figure 5 , after the sampling is completed, the first sampling structure 11 and the second sampling structure 12 can be detached separately in various ways.

[0064] In an optionally implemented manner, the sampling collection tube can be made of an elastic material. In the state where the first sampling structure 11 is located inside the sampling collection tube, an operator can pinch the first sampling structure 11 through the tube wall of the sampling collection tube with one hand, hold the operating rod 10 with the other hand, and pull the first sampling structure 11 away from the operating rod 10 to collect the first sampling structure 11 inside the sampling collection tube.

[0065] However, the disassembly method of the first sampling structure 11 in the foregoing implementation manner will cause a large number of cells on the first brush 111 to adhere to the tube wall of the sampling collection tube, and further may cause the problem of insufficient remaining cell amount on the first brush 111.

[0066] In another optionally implemented manner, the operating rod 10 is provided with a through hole 103 that penetrates through the first end 101 and the second end 102 at both ends, and the first substrate 110 is press-fitted into the through hole 103. Thus, the first substrate 110 can be ejected from the inside of the through hole 103 by inserting an auxiliary rod into the through hole 103 from the second end 102 to disassemble the first substrate 110 from the operating rod 10, and the contact between the first brush 111 and other objects can be reduced during the disassembly process, and further, the amount of cells remaining on the first brush 111 is relatively large.

[0067] Specifically, an operator can insert an auxiliary rod into the through hole 103 from the second end 102 to eject the first substrate 110 in the posture that the cervical sampling device 1 has the first sampling structure 11 suspended above the sampling collection tube, and the ejected first sampling structure 11 automatically falls into the sampling collection tube.

[0068] In order to disassemble the second sampling structure 12 after disassembling the first sampling structure 11, in an optional implementation, the second matrix 120 can be interference fit on the first end 101, or the operating rod 10 can have a thinned portion near the first end 101. After disassembling the first sampling structure 11, the second sampling structure 12 can be inserted into another sampling collection tube, and the operating rod 10 can be bent to make the second matrix 120 stuck on the tube wall of the sampling collection tube. The operating rod 10 is continued to be bent until the second matrix 120 is separated from the first end 101, or until the thinned portion of the operating rod 10 breaks.

[0069] However, the disassembly method of the second sampling structure 12 in the aforementioned embodiment may cause a large number of cells collected by the second brush 121 to adhere to the wall of the sampling collection tube, which may lead to insufficient cells remaining on the second brush 121 .

[0070] In another optional embodiment, the second base 120 can be interference fit on the first end 101. After sampling is completed, an auxiliary sleeve can be sleeved on the outer periphery of the operating rod 10, and the operator grasps the second end 102 with one hand and the auxiliary sleeve with the other hand to move the auxiliary sleeve toward the first end 101 to push the second base 120 to be separated from the first end 101, so as to achieve disassembly of the second sampling structure 12. During the disassembly process, the contact between the second brush 121 and other objects can be reduced, thereby retaining more cells on the second brush 121.

[0071] Specifically, the operator can move the auxiliary sleeve toward the first end 101 to push the second base 120 to detach from the first end 101 when the second sampling structure 12 of the cervical sampling device 1 is suspended above the sampling collection tube, and the second sampling structure 12 automatically falls into the sampling collection tube after detaching from the first end 101.

[0072] Optionally, a connecting portion 1203 may be protrudingly provided on one side of the second base 120 facing the second end 102, and the connecting portions 1203 of the two second bases 120 are connected to form a sleeve structure, so that the connection stability between the second base 120 and the operating rod 10 can be further improved through the connecting portion 1203, thereby avoiding the unexpected automatic detachment of the second sampling structure 12 during the sampling process.

[0073] Optionally, at least part of the outer peripheral surface of the operating rod 10 is a friction surface, so that when the operator grasps the friction surface, the friction between the operator's hand and the operating rod 10 is larger, and the operator's grasping stability of the operating rod 10 is better, so that the operator can grasp the operating rod 10 to perform operations such as sampling and disassembly of the sampling structure.

[0074] Optionally, a part of the outer peripheral surface of the operating rod can be formed into an uneven surface so that the outer peripheral surface of this part is a friction surface with a relatively large coefficient of friction.

[0075] Optionally, the outer peripheral surface of the operating rod 10 includes a first friction surface 104 and a second friction surface 105 which are arranged at intervals. The first friction surface 104 is adjacent to the first end 101, and the second friction surface 105 is adjacent to the second end 102. Thus, it is convenient for the operator to grip the operating rod 10 through the second friction surface 105 to perform the sampling work. And when it is necessary to grip the position adjacent to the first end 101, the operator can grip the operating rod 10 more stably through the first friction surface 104.

[0076] When, as described in the foregoing technical solution, the operating rod 10 is provided with a through hole 103, specifically, the operator can grip the operating rod 10 through the first friction surface 104 with one hand, and insert an auxiliary rod into the through hole 103 from the second end 102 with the other hand to eject the first base body 110. Thus, the force application positions of the two hands are reasonable, and the operation of ejecting the first base body 110 from the through hole 103 by using the auxiliary rod can be completed more simply.

[0077] When, as described in the foregoing technical solution, the second base body 120 is disassembled by using an auxiliary sleeve, the operator can grip the operating rod 10 through the first friction surface 104 with one hand, sleave the auxiliary sleeve on the operating rod 10 from the second end 102 with the other hand, and move the auxiliary sleeve to a position adjacent to the first friction surface 104 so that the second friction surface 105 is exposed outside the auxiliary sleeve. Then, the operator can grip the operating rod 10 through the second friction surface 105 with one hand, and grip the auxiliary sleeve with the other hand, and move the auxiliary sleeve toward the first end 101 to push the second base body 120 to be separated from the first end 101. Thus, the force application positions of the two hands are reasonable, and the operation of pushing the second base body 120 away from the first end 101 by using the auxiliary sleeve can be completed more simply.

[0078] In the description herein, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0079] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0080] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0081] The technical principle of the present utility model has been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present utility model and cannot be construed in any way as a limitation on the protection scope of the present utility model. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present utility model without creative efforts, and these embodiments will fall within the protection scope of the present utility model.

Claims

1. A cervical sampling device, characterized in that, Comprising: A joystick having a first end and a second end opposite to each other in a first direction; A first sampling structure including a first base body and a plurality of first brushes. The first base body is press-fitted into the first end in the first direction, and the plurality of first brushes are arranged in a direction surrounding the first direction, and the plurality of first brushes are disposed on the circumferential side of the first base body; And, A second sampling structure including two second base bodies oppositely arranged in a second direction and a plurality of second brushes. The two second base bodies are connected, and the two second base bodies are integrally slidably sleeved on the outer periphery of the first end. The plurality of second brushes are disposed on a side of the second base body facing away from the second end, and at least part of the plurality of second brushes is located on the outer periphery of the first base body; Wherein, the first direction is the length extension direction of the joystick, and the second direction is perpendicular to the first direction.

2. The cervical sampling device according to claim 1, wherein, The second base body has two side surfaces opposite to each other in a third direction, and the two side surfaces are parallel, wherein the third direction is perpendicular to the first direction and the second direction; or, A side surface of the second base body facing away from the second end and close to the first base body has a fan shape with an avoidance notch.

3. The cervical sampling device according to claim 1, wherein A guiding portion is provided at an end of the first base body away from the joystick, and a surface of the guiding portion away from the joystick includes a conical surface, a semi-elliptical spherical surface or a hemispherical surface; and / or, A limiting portion is convexly provided on the outer periphery of the first base body, and the limiting portion can abut against a side surface of the second base body provided with the second brushes, and all the first brushes are located on a side of the limiting portion facing away from the second base body; and / or, In a direction perpendicular to the first direction, a maximum dimension of the first sampling structure is d1, and 0.5 cm ≤ d1 ≤ 1.5 cm.

4. The cervical sampling device according to claim 1, wherein, In a direction perpendicular to the first direction, a maximum distance between an edge of the second base body and the central axis of the joystick is d2, and 1.25 cm ≤ d2 ≤ 1.75 cm.

5. The cervical sampling device according to claim 1, characterized in that, A length direction of the first brush is perpendicular to the first direction; and / or, A length direction of the second brush is parallel to the first direction.

6. The cervical sampling device according to any one of claims 1-5, characterized in that, In a direction from the second end to the first end, lengths of the first brushes arranged in sequence gradually decrease; and / or, The second base body includes a first part and a second part. The second part is connected to a side surface of the first part away from the first base body. Lengths of the second brushes disposed on the first part are equal, and at least part of the second brushes disposed on the first part is located on the outer periphery of the second sampling structure. In a direction from the first part to the second part, lengths of the second brushes disposed on the second part gradually increase.

7. The cervical sampling device according to claim 6, characterized in that, In the first direction, the maximum distance between the first brush and the second base is s, where 2.5 cm ≤ s ≤ 3.5 cm. The protruding height of the second brush provided on the first part above the first part is h1, where 0.5 cm ≤ h1 ≤ 1.5 cm. The maximum protruding height of the second brush provided on the second part above the second part is h2, where h2 > h1 and 1.5 cm ≤ h2 ≤ 2.5 cm.

8. The cervical sampling device according to any one of claims 1-5, characterized in that, The operating rod is provided with a through hole that penetrates through the first end and the second end respectively, and the first base is press-fitted into the through hole; and / or, The second base is press-fitted over the first end.

9. The cervical sampling device according to claim 8, wherein, At least a part of the outer peripheral surface of the operating rod is a friction surface.

10. The cervical sampling device according to claim 9, characterized in that, The outer peripheral surface of the operating rod includes a first friction surface and a second friction surface that are arranged at intervals. The first friction surface is close to the first end, and the second friction surface is close to the second end.

Images