A gynecological secretion sampling device

Abstract

The application discloses a gynecological secretion sampling device and relates to the technical field of gynecological examination, which is used to solve the problem that the existing device cannot perform multiple sampling operations without multiple insertions and extractions. The device comprises an outer tube, a linkage type sampling mechanism is arranged in the outer tube, and a plurality of sampling pieces are arranged in a sampling piece mounting cavity in the outer tube. The outer push rod is pushed into the inner part of the outer tube, the sampling pieces are pushed to the clamping ring on the opening plate at the front end of the outer tube through the action of air pressure, the opening plate and the sampling pieces are opened from the side part of the outer tube through the connecting rod assembly, meanwhile, the swab in the sampling piece is rotated to sample the secretion of the inner wall of the vagina, the opening plate is reset by the elasticity of the inner wall of the vagina, then the outer push rod is rotated, the sampling piece that has completed sampling is pushed into the recovery cavity through the recovery push rod, the outer push rod is pulled out, the sampling piece is taken out, the outer push rod is pushed in again, the next sampling is performed through the subsequent sampling piece, and the outer tube does not need to be taken out from the vagina.

Description

Technical Field

[0001] This invention relates to the field of gynecological examination technology, specifically to a gynecological secretion sampling device. Background Technology

[0002] Gynecological secretion sampling is a core prerequisite for gynecological disease screening, diagnosis, and treatment evaluation. The safety, comfort, accuracy, and efficiency of the sampling directly affect the accuracy of subsequent test results and the patient's medical experience, as well as the ease of operation for medical staff. Currently, commonly used gynecological secretion sampling methods and related devices still have many technical shortcomings and cannot meet actual clinical needs. The current mainstream sampling methods are mainly divided into two categories: traditional manual sampling and simplified sampling devices. However, both methods have significant deficiencies, and the existing sampling devices have unreasonable structural designs, leading to numerous problems during the sampling process. Most gynecological secretion sampling devices currently used in clinical practice adopt a "separate structure," meaning that supporting the vagina and collecting secretions are two independent procedures, lacking an integrated design. During operation, medical staff must first use a vaginal speculum to open the vagina and expose the sampling site on the vaginal wall, then insert a cotton swab into the vagina to collect the secretions. After sampling, the cotton swab is removed, the sample is sealed, and then the vaginal speculum is removed to complete one sampling operation. This makes the procedure overly cumbersome and prone to causing vaginal injury.

[0003] Some improved sampling devices, such as the gynecological vaginal secretion sampling device with publication number CN120983083A, simplify the operation steps by combining sampling and support. However, due to their structural design, these devices can only achieve single sampling. When multiple samplings are required, the sampling component needs to be repeatedly inserted and removed from the body. Moreover, their support method is still an integral expansion, which can easily lead to problems such as strong patient discomfort. Summary of the Invention

[0004] To address the aforementioned problems, this invention aims to provide a gynecological secretion sampling device. Through a linked sampling mechanism, an external push rod is slidably positioned at the center of the outer tube, and a sampling component mounting cavity is opened on one side of the outer tube to accommodate multiple sampling components. A support plate is positioned on the side of the outer tube near the sampling component mounting cavity. A drive push rod on the external push rod, in conjunction with a connecting rod assembly, pushes the support plate outward, causing the swab in the foremost sampling component to unfold and rotate from within the outer tube, sampling secretions from the vaginal wall and automatically retracting the sampling component. It also automatically pushes subsequent sampling components forward. Subsequently, rotating the external push rod moves the foremost outer tube to a recovery cavity on the other side of the outer tube, allowing for multiple sampling operations without removing the outer tube. This device offers advantages such as high sampling efficiency, convenient operation, and good safety.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A gynecological secretion sampling device includes an outer tube, an operating cavity in the middle of the outer tube, a guide tube at the center of the operating cavity, a sampling component installation cavity and a recovery cavity in the outer tube and on both sides of the operating cavity, and a linkage sampling mechanism in the outer tube.

[0006] The linkage sampling mechanism includes an external push rod slidably disposed in the operating cavity, a plurality of sampling components are disposed in the outer tube mounting cavity, a support plate for engaging the sampling components is disposed on the side of the outer tube near the sampling component mounting cavity, and a connecting rod assembly for pushing the support plate out from the side of the outer tube is disposed on the guide cylinder.

[0007] The sampling component includes a sampling tube for fixing a swab. An end cap is magnetically connected to the opening of the sampling tube. A swab is fixed inside the sampling tube. A driving cavity adapted to the guide tube is opened in the middle of the outer push rod. The end of the driving cavity away from the outer tube is connected to the sampling component mounting cavity through an air supply pipe.

[0008] The linkage assembly includes a first linkage and a second linkage, which are rotatably connected at their middle parts. A slide rail is provided on the guide cylinder, and the bottom ends of the first linkage and the second linkage are slidably disposed at both ends of the slide rail. A drive push rod is slidably disposed on the outer push rod, and the drive push rod can push the bottom end of the first linkage to slide along the slide rail towards the bottom end of the second linkage.

[0009] The expansion plate includes a curved plate adapted to the wall of the outer tube. A snap ring adapted to the sampling element is provided on the side of the curved plate near the inside of the outer tube. The bottom of the snap ring near the front end of the outer tube is rotatably connected to the top of the first connecting rod.

[0010] The sampling tube has a spiral groove at the end away from the end cap. The top of the second connecting rod is rotatably mounted with a snap-fit ​​plate via a torsion spring. The movable end of the snap-fit ​​plate is provided with a magnetic ball that matches the spiral groove.

[0011] The end of the outer push rod away from the outer tube is equipped with a pressure baffle that is rotatably mounted by a torsion spring. The pressure baffle is normally in contact with the end of the outer push rod, providing the power to push the first connecting rod.

[0012] A magnetic suction plate is provided inside the outer tube near the first end. The magnetic suction plate is used to attract the end cap. A curved groove is formed on the magnetic suction plate. The top end of the curved groove corresponds to the snap ring position of the expansion plate, and its bottom end corresponds to the recovery chamber. The end cap is provided with a snap joint adapted to the curved groove. An adjustment rod is provided in the drive cavity in the middle of the outer push rod. The end of the adjustment rod away from the outer push rod is provided with a recovery push rod for pushing the sample along the curved groove from the snap ring to the recovery chamber.

[0013] A sealing plug is provided at the connection between the sampling component mounting cavity and the gas supply pipe. A first one-way valve is provided on the sealing plug. The first one-way valve is used to allow air in the driving cavity to flow into the sampling component mounting cavity in one direction. A second one-way valve is provided at the end of the driving cavity away from the outer pipe. The second one-way valve is used to allow external air to flow into the driving cavity in one direction. An elastic element is also provided on the sealing plug.

[0014] The beneficial effects of this invention are: 1. This application designs a linkage sampling mechanism. During use, multiple sampling components are installed in the sampling installation cavity. Then, by pushing the external push rod into the outer tube, the air pressure in the drive cavity and the sampling component installation cavity pushes the sampling component towards the front end of the outer tube, thereby opening the frontmost sampling component and locking it with the snap ring of the expansion plate. Subsequently, the external push rod is pushed in further, and the drive push rod pushes the first connecting rod to move along the slide rail, thereby causing the expansion plate to drive the sampling tube and swab to open from the side of the outer tube. The sampling tube rotates through the cooperation of the magnetic ball and the spiral slide groove, and the swab extracts secretions from the vaginal wall. The entire extraction process can be achieved simply by pushing the external push rod, making it easy to operate.

[0015] 2. When the expansion plate is repositioned to the outer tube under the pressure of the vaginal wall, it can drive the sampling tube and swab back into the outer tube. Then, the external push rod is pushed to move the subsequent sampling pieces forward and push the sampling tube at the front end to re-adhere and close the end cap. When the external push rod is pushed to its limit distance, its front end recovery push rod is flush with the magnetic suction plate. At this time, the external push rod is rotated, and the entire front end sampling piece is pushed along the curved groove to the bottom recovery chamber through the recovery push rod. The external push rod is then pulled back to retrieve the sampling piece that has extracted secretions. At the same time, gas is added to the drive chamber. Then, the external push rod is pushed in again so that the subsequent sampling pieces can be sampled in the same way. This allows the present application to complete multiple samplings without repeatedly withdrawing or inserting the outer tube, thereby improving the secretion extraction efficiency of the present application.

[0016] 3. Unlike existing methods that involve overall expansion of the vaginal wall, this application employs a localized expansion method by extending the expansion plate from the side of the outer tube. This allows for simultaneous expansion and secretion sampling, reducing damage to the vaginal wall caused by expansion. Furthermore, the expansion force of the expansion plate is provided by the resistance of the pressure baffle at the end of the outer push rod against the drive push rod. When a sampling is completed, the pressure baffle can be extended, allowing the expansion plate and drive push rod to quickly return to their original positions under the rebound of the vaginal wall. Alternatively, the elastic coefficient of the torsion spring at the connection between the pressure baffle and the outer push rod can be adjusted to accommodate the maximum expansion height of the expansion plate relative to the vaginal wall (i.e., the drive push rod can push the pressure baffle open when the expansion plate exerts a certain pressure on the vaginal wall). This provides overpressure protection, preventing damage to the vaginal wall and enhancing safety. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention in its initial state; Figure 2 This is a side view of the invention in its initial state; Figure 3 This is a side sectional view of the present invention in its initial state; Figure 4 This is a side sectional view of the present invention with the support plate in the open state; Figure 5 This is a side sectional view and a partially enlarged view of the present invention with the sample taken into the recovery chamber. Figure 6 This is a three-dimensional structural diagram from the perspective of the outer tube's tail section; Figure 7 This is a schematic diagram of the magnetic suction plate and curved slide groove structure at the head of the outer tube; Figure 8 A three-dimensional structural diagram and a partial enlarged view from the perspective of the push rod head; Figure 9 A three-dimensional structural diagram from the perspective of the tail end of the push rod; Figure 10 This is a three-dimensional structural schematic diagram and a partial enlarged view of the connecting rod assembly; Figure 11 This is a three-dimensional sectional view of the sampled part. Figure 12 This is a three-dimensional structural cross-sectional view and a partial enlarged view of the present invention in the open state of the support plate; Figure 13 This is a three-dimensional structural cross-sectional view of the present invention from another perspective when the support plate is in the open state; Figure 14 This is a three-dimensional structural cross-sectional view and a partially enlarged view of the present invention in the state where the sample is received into the recovery chamber; Figure 15This is a modeling diagram of the application in its initial state; Figure 16 This is a modeling diagram of the application with the support plate in the open state; Figure 17 This is a modeling diagram of the sample being received into the recovery chamber in this application; Figure 18 Modeling diagram of the board in the state of being connected to the sample component; Figure 19 The modeling diagram and enlarged view of the outer tube after segmentation are shown.

[0018] The components include: 1. Outer tube; 101. Operating chamber; 102. Guide cylinder; 1021. Slide rail; 103. Sampling component mounting chamber; 104. Recovery chamber; 105. Magnetic suction plate; 106. Curved slide groove; 2. Linkage sampling mechanism; 201. External push rod; 202. Drive chamber; 203. Spreading plate; 2031. Curved plate; 2032. Snap-fit ​​ring; 204. Linkage assembly; 2041. First link; 2042. Second link. 2043. Connecting rod; 2044. Magnetic ball; 205. Gas pipe; 206. Drive push rod; 208. Pressure baffle; 209. Adjusting rod; 210. Retraction push rod; 211. Sealing plug; 212. First one-way valve; 213. Second one-way valve; 214. Elastic component; 3. Sampling component; 301. Sampling tube; 302. End cap; 303. Swab; 304. Spiral groove; 305. Snap-fit ​​connector. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] The inventors discovered that most gynecological secretion sampling devices currently used in clinical practice employ a "separate structure," meaning that supporting the vagina and collecting secretions are two independent procedures, lacking an integrated design. During operation, medical staff must first use a vaginal speculum to open the vagina and expose the sampling site, then insert a cotton swab into the vagina to collect the secretions. After sampling, the swab must be removed, the sample sealed, and the vaginal speculum removed to complete one sampling operation. This process is overly cumbersome and prone to causing vaginal injury.

[0021] Based on the above findings, this application proposes a gynecological secretion sampling device. Through a linked sampling mechanism, an external push rod is slidably positioned at the center of the outer tube, and a sampling component installation cavity is opened on one side of the outer tube to accommodate multiple sampling components. A support plate is positioned on the side of the outer tube near the sampling component installation cavity. A drive push rod on the external push rod, in conjunction with a connecting rod assembly, pushes the support plate outward, causing the swab in the foremost sampling component to unfold and rotate from within the outer tube, sampling secretions from the vaginal wall and automatically retrieving the sampling component. It also automatically pushes subsequent sampling components forward. Subsequently, rotating the external push rod moves the foremost outer tube to a recovery cavity on the other side of the outer tube, allowing for multiple sampling operations without removing the outer tube. This device offers advantages such as high sampling efficiency, convenient operation, and good safety.

[0022] Example 1: See Figure 1 and Figure 2 This application discloses a gynecological secretion sampling device, including an outer tube 1, see reference. Figure 6 , Figure 7 as well as Figure 19 In this embodiment, the outer tube 1 is a cylindrical tubular structure with a smooth round head at the front end and no end cap at the rear end. An operating cavity 101 is provided at the center of the outer tube 1, and a guide tube 102 is provided at the center of the operating cavity 101. A magnetic suction plate 105 is provided near the front end of the outer tube 1 in the operating cavity 101. In this embodiment, there are two layers of magnetic suction plates 105. The center of the magnetic suction plate 105 away from the front end of the outer tube 1 is connected to the guide tube 102. The guide tube 102 has no end caps at both ends, and the end connected to the magnetic suction plate 105 makes the gap between the guide tube 102 and the two layers of magnetic suction plates 105 interconnected. In this embodiment, a sampling component installation cavity 103 and a recovery cavity 104 are provided on both sides of the operating cavity 101. Viewed from the tail end of the outer tube 1, the inlets of the sampling component installation cavity 103 and the recovery cavity 104 are symmetrically arranged with circular cavities. The difference lies in that the sampling component installation cavity 103 is always a slender cylindrical cavity structure with a circular cross-section. Near the front end of the outer tube 1, it has a notch for subsequent installation of the support plate 203, and multiple partitions are provided inside the outer tube 1. The outlet of 03 is connected to the partition and forms another cavity structure with the opening of the operating cavity 101 and the mounting support plate 203. The cavity of the recovery cavity 104 includes two sections. The rear section is a slender cylindrical cavity structure from the inlet to the partition structure (that is, the same cross-sectional size as the sampling component mounting cavity 103, or adapted to the subsequent sampling component 3). The front section is a cavity structure with an almost arc-shaped strip hole between the partition structure and the magnetic suction plate 105, and this cavity structure is connected to the gap between the two layers of magnetic suction plates 105.

[0023] A linkage sampling mechanism 2 is also provided inside the outer tube 1. In actual use, the first end (i.e., the round head structure) of the outer tube 1 is inserted into the vagina, and the secretions inside the vagina are sampled through the linkage sampling mechanism 2. After sampling, the frontmost sampling element 3 is retrieved through the recovery cavity 104, and the subsequent sampling elements 3 located in the sampling element installation cavity 103 are replenished to the front end of the outer tube 1.

[0024] Example 2: See Figures 3-5 as well as Figures 15-17 The linkage sampling mechanism 2 includes an external push rod 201, see reference. Figure 8 and Figure 9 The front end of the external push rod 201 is adapted to the inlet of the recovery chamber 104, and a drive chamber 2011 adapted to the guide tube 102 is opened in the middle of the rod body, so that the external push rod 201 can be pushed in along the tail of the outer tube 1. The tail end of the external push rod 201 is provided with a circular push plate structure with a cross-sectional diameter larger than that of the recovery chamber 104 (i.e., the cross-sectional shape is adapted to the outer tube 1). A gas supply pipe 205 is connected to the side of the drive chamber 2011 near the tail of the external push rod 201, and a sealing plug 211 is provided at the other end of the gas supply pipe 205. The sealing plug 211 can be installed at the inlet of the sampling component installation chamber 103, so that the drive chamber 2011 and the sampling component installation chamber 103 are connected. See Figure 11 The sampling component installation cavity 103 is provided with a plurality of sampling components 3. The sampling component 3 includes a slender sampling tube 301. The sampling tube 301 is a slender tube with a bottom cover at one end. The end without the cover is magnetically connected to an end cover 202. A snap connector 305 is also provided at the center of the side of the end cover 202 away from the sampling tube 301. A swab 2022 is fixed inside the sampling tube 301. In this embodiment, the swab 2022 can be a cotton swab product. Its swab body is inserted into the center of the bottom cover of the sampling tube 301. The overall length of the swab 2022 is greater than the length of the cavity inside the sampling tube 301, so that the cotton ball segment used for swabbing can extend from the end without the cover of the sampling tube 301. Then, the plurality of sampling components 3 can be placed into the sampling component installation cavity 103 by means of the snap connector 305 on the end cover 202 of the latter being attached to the bottom cover of the sampling tube 301 of the former. See Figure 18Near the front end of the outer tube 1, a support plate 203 adapted to the notch mentioned above is provided. The support plate 203 includes a curved plate 2031 adapted to the wall of the outer tube 1. A snap-fit ​​ring 2032 is provided on the side of the curved plate 2031 near the operating cavity 101. The snap-fit ​​ring 2032 is a ring with a fan-shaped cross-section (i.e., the arc is greater than that of a semi-circular ring). Its two ends are in contact with the magnetic suction plate 105 and the partition inside the outer tube 1, respectively. When the outer push rod 201 is pushed into the outer tube 1... At this time, a sealed chamber is formed between the drive cavity 2011 in the middle of the outer push rod 201 and the guide cylinder 103. As the outer push rod 201 is continuously pushed in, the volume of the sealed chamber between the drive cavity 2011 and the guide cylinder 103 continuously decreases. At this time, the air inside can be sent to the inlet of the sampling component installation cavity 103 through the air supply pipe 205, and push the sampling component 3 in the sampling component installation cavity 103 towards the head end of the outer tube 1 until the sampling component 3 at the front end coincides with the snap ring 2032.

[0025] See Figure 10 A connecting rod assembly 204 is provided near the front end of the guide cylinder 102 located at the center of the outer tube 1. The connecting rod assembly 204 includes a pair of first connecting rods 2041 and second connecting rods 2042 that are rotatably arranged in a cross configuration. A pair of slide rails 1021 are provided above the guide cylinder 102. The bottom ends of the first connecting rods 2041 and second connecting rods 2042 are slidably disposed within the slide rails 1021 (i.e., the two connecting rods maintain an X-shaped state, and their bottom ends abut against the two ends of the slide rails 1021 respectively). At the same time, the top end of the first connecting rod 2041 is hinged to the bottom of the locking ring 2032, while the top of the second connecting rod 2042 is provided with a rotatable locking plate 2042. A torsion spring is provided at the rotatable connection between the locking plate 4032 and the second connecting rod 2042, so that... The initial state of the snap-fit ​​plate 4032 is perpendicular to the second connecting rod 2042. A magnetic ball 2044 is provided at the movable end of the snap-fit ​​plate 4032, and a spiral groove 304 adapted to the magnetic ball 2044 is provided at the bottom end of the sampling tube 301. When the sampling member 3 at the foremost end moves towards the head end of the outer tube 1, it can squeeze the snap-fit ​​plate 4032 through the bottom of the sampling tube 301. When the sampling tube 301 moves to a position slightly beyond the snap-fit ​​plate 4032, the snap-fit ​​plate 4032 rebounds under the action of the torsion spring. At the same time, the magnetic ball 2044 attracts the bottom end of the sampling tube 301 and is inserted into the spiral groove 304. Meanwhile, the end cap 202 is opened under the magnetic attraction of the magnetic suction plate 105, exposing the swabbing section of the swab 303.

[0026] A drive push rod 206 is slidably disposed near the middle of the outer push rod 201. When the outer push rod 201 is pushed into the outer tube 1, the drive push rod 206 moves with the outer push rod 201 and in a direction that fits against the outside of the guide tube 102 until it contacts the bottom end of the first connecting rod 2041. When the outer push rod 201 continues to be pushed forward, the drive push rod 206 can push the bottom end of the first connecting rod 2041 towards the second connecting rod 2042. At this time, the swab 303 in the sampling piece 3 is exposed. The interaction between the first connecting rod 2041 and the second connecting rod 2042 can increase the height of the X-shaped structure formed by the two, thereby pushing the opening plate 203 with the sampling tube 301 out from the side of the outer tube 1, and at the same time pushing the vaginal wall. Figure 12 and Figure 13 As shown; at the same time, the sampling tube 301 can rotate under the cooperation of the spiral groove 304 on its bottom cover and the magnetic ball 2044. When the vaginal wall is stretched open by the stretching plate 203, due to the elasticity of the vaginal wall, it can contact the dipping end of the swab 303, and through the rotation of the swab 303 driven by the sampling tube 301, the swab 303 can evenly pick up the secretions of the inner wall of the guide.

[0027] In this embodiment, a pressure baffle 208 is rotatably disposed at the tail of the outer push rod 201. A torsion spring is disposed at the rotatable connection between the pressure baffle 208 and the outer push rod 201, so that the pressure baffle 208 remains in contact with the tail of the outer push rod 201 under normal conditions. At the same time, the tail end of the drive push rod 206 passes through the outer push rod 201 and coincides with the pressure baffle 208. Therefore, when the outer push rod 201 is pushed into the outer tube 1, the pressure baffle 208 can be subjected to the elastic force of the torsion spring. The power provided by the push rod 206 to move the first link 2041 (i.e., to provide the power to open the expansion plate 203) is determined by parameters such as the elastic modulus of the torsion spring provided at its rotational connection. After being modulated, the torsion spring can open the pressure baffle 208 when the expansion plate 203 receives a certain reaction force from the vaginal wall, thereby playing the role of overpressure protection, preventing the expansion plate 203 from damaging the vaginal wall and improving safety.

[0028] When the expansion plate 203 is opened and the swab 303 has rotated and collected secretions, the expansion plate 203 can be gradually squeezed and reset by the elastic force of the vaginal wall itself. At this time, the drive push rod 206 pushes the first connecting rod 2041 towards the tail end of the outward push rod 201 and opens the pressure baffle 208. When the pressure baffle 208 is fully opened, it no longer exerts a squeezing effect on the drive push rod 206. That is, the expansion plate 203 and the connecting rod assembly 204 can be reset to the initial state, and the continued pushing of the outward push rod 201 no longer drives the drive push rod 206 to move synchronously.

[0029] After the expansion plate 203 is reset, the outer push rod 201 is pushed into the outer tube 1. At this time, the gas in the drive cavity 2011 is continuously filled into the sampling component installation cavity 103, and the subsequent sampling component 3 is pushed forward, so that the sampling tube 301 of the frontmost sampling component 3 and the end cap 202 are close together again and adsorbed and closed. A curved groove 106 is provided on the magnetic suction plate 105. The curved groove 106 is a curved groove that is adapted to the card connector 305, and the curvature and arc length of the curved groove are the same as those of the front end of the recovery cavity 104. See Figure 14 An adjusting rod 209 is also provided at the center of the driving cavity 2011 of the outer push rod 201. The adjusting rod 209 is a slender rod, and its length is greater than that of the outer push rod 201. When the outer push rod 201 is continuously pushed into the outer tube 1, the adjusting rod 209 can be pushed synchronously to the gap formed between the two magnetic plates 105 and abut against the frontmost magnetic plate 105. At the end of the adjusting rod 209 away from the outer push rod 201 (i.e., the end that abuts against the magnetic plate 105), a retraction push rod 210 perpendicular to its rod body is also provided. A through groove is provided at the bottom of the guide cylinder 102 and the top of the retraction cavity 104 to allow the retraction push rod 210 to pass through in a vertical state (when the outer push rod 201 is pushed, the bottom of the driving cavity 2011 can cover the through groove at the bottom of the guide cylinder 102, so it will not affect the driving cavity). (Air tightness of the chamber formed by the moving cavity 2011 and the guide tube 102) When the adjusting rod 209 abuts against the magnetic suction plate 105, the recovery push rod 210 can be in a close fit with the front magnetic suction plate 105 (i.e., the two are close to the same horizontal plane). At this time, rotate the outer push rod 201 counterclockwise so that the adjusting rod 209 and the recovery push rod 210 rotate synchronously and contact the snap connector 305 on the end cap 202 of the sampling component 3 through the end of the recovery push rod 210. This drives the entire sampling component 3 to rotate along the curved slide 106 to the lower part of the recovery cavity 104. Then, rotate the outer push rod 201 clockwise to reset it. After resetting, the recovery push rod 210 can still contact the end cap 202. At this time, pull the outer push rod outward to drive the sampling component 3, which has completed sampling, to move along the recovery cavity 104 and exit from the tail of the outer tube 1.

[0030] In this embodiment, a second one-way valve 213 is provided at the end of the drive chamber 2011 that is away from the outer tube 1. When the outer push rod 201 is pulled out of the outer tube 1, the second one-way valve 213 can open and allow external air to enter the drive chamber 2011, replenishing the air in the drive chamber 2011, and also allowing the outer push rod 201 to be pulled out smoothly. At the same time, a first one-way valve 212 is also provided at the sealing plug 211. The first one-way valve 212 can allow gas in the chamber formed by the drive chamber 2011 and the guide cylinder 102 to flow in one direction. Inside the sampling device installation cavity 103, after the external push rod 201 is pulled out, it is pushed back into the outer tube 1. The next sampling device 3 can then be pushed to the spreading plate 203 in the same manner as the above steps, and the sampling operation can be performed again. To prevent the spreading plate 203 from opening at the same position and causing damage to the vaginal wall, the insertion length or position of the outer tube 1 can be adjusted. However, it is not necessary to completely remove and reinsert the outer tube 1 each time the sampling operation is performed, which can reduce the pain suffered by the patient during the sampling operation and improve the safety of the sampling operation.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A gynecological secretion sampling device, comprising an outer tube (1), characterized in that: An operating chamber (101) is provided in the middle of the outer tube (1), and a guide tube (102) is provided at the center of the operating chamber (101). The operating chamber (101) is provided with a sampling component installation chamber (103) and a recovery chamber (104) on both sides. The sampling component installation chamber (103) is provided with a number of sampling components (3) for taking secretion samples. It also includes a linkage sampling mechanism (2), which is set inside the outer tube (1) to push the sampling element (3) out from the side of the outer tube (1) for sampling secretions.

2. The gynecological secretion sampling device according to claim 1, characterized in that, The sample (3) includes: The sampling tube (301) is set inside the sampling component mounting cavity (103), and a swab (303) is installed inside it. The end cap (302) is magnetically connected to the uncapped end of the sampling tube (301), and a snap connector (305) is provided at the end away from the sampling tube (301). A spiral groove (304) is provided at the end of the sampling tube (301) away from the end cap (302).

3. The gynecological secretion sampling device according to claim 2, characterized in that, The linkage sampling mechanism (2) includes: The external push rod (201) is slidably disposed within the operating cavity (101); A support plate (203) is installed on the outer tube (1) and is used to support the outer tube (1) from the side wall. The linkage assembly (204), disposed on the guide tube (102), is used to drive the expansion plate (203) to expand when the outer push rod (201) is pushed into the outer tube (1).

4. A gynecological secretion sampling device according to claim 3, characterized in that, The linkage sampling mechanism (2) also includes: The drive cavity (202) is located in the middle of the outer push rod (201), and it is adapted to the guide tube (102). The end of the drive cavity (202) away from the outer tube (1) is connected to the sampling component installation cavity (103). It is used to fill the sampling component installation cavity (103) with gas when the outer push rod (201) is pushed into the outer tube (1), so as to push the sampling component (3) to move in the sampling component installation cavity (103).

5. A gynecological secretion sampling device according to claim 4, characterized in that, The link assembly (204) also includes: The bottom ends of the first link (2041) and the second link (2042) are slidably mounted on the slide rail (1021) above the guide cylinder (102), and the first link (2041) and the second link (2042) are rotatably connected to each other. The snap-fit ​​plate (2043) is rotatably mounted on the top of the second link (2042), and a torsion spring is provided at the rotatable connection between it and the second link (2042); A magnetic ball (2044) is set on a snap-fit ​​plate (2043) to adsorb the sampling tube (301) and snap into the spiral groove (304) at its end.

6. A gynecological secretion sampling device according to claim 5, characterized in that: The expansion plate (203) includes a curved plate (2031) which is adapted to the wall of the outer tube (1). A snap ring (2032) adapted to the snap-fit ​​component (202) is provided on the side of the curved plate (2031) near the inside of the outer tube (1). The bottom of the snap ring (2032) is rotatably connected to the top of the first connecting rod (2041).

7. A gynecological secretion sampling device according to claim 6, characterized in that, The linkage sampling mechanism (2) also includes: The drive push rod (206) is slidably mounted on the outer push rod (201) and is used to push the bottom end of the first connecting rod (2041) toward the direction of the second connecting rod (2042) so that the expansion plate (203) is opened from the outer tube (1); A pressure baffle (208) is provided at the end of the outer push rod (201) away from the outer tube (1), and a torsion spring is provided at the rotatable connection between the pressure baffle (208) and the outer push rod (201) to provide thrust for the drive push rod (206) to push the first connecting rod (2041).

8. A gynecological secretion sampling device according to claim 7, characterized in that, Also includes: A magnetic plate (105) is set inside the outer tube (1) at one end away from the outer push rod (201) to attract the end cap (302). A curved groove (106) is provided on the magnetic plate (105) and is adapted to the card connector (305).

9. A gynecological secretion sampling device according to claim 8, characterized in that, Also includes: An adjusting rod (209) is located at the center of the drive cavity (202) on the outer push rod (201). The end of the rod away from the outer push rod (201) is provided with an adjusting rod (209) for pushing the snap-fit ​​connector (305) so that the sample (3) moves along the curved slide (106) into the recovery cavity (104).

10. A gynecological secretion sampling device according to claim 9, characterized in that, Also includes: A sealing plug (211) is provided at the connection between the sampling component mounting cavity (103) and the driving cavity (202); The first one-way valve (212) is provided on the sealing plug (211) to allow the gas in the drive chamber (202) to flow unidirectionally into the sampling component mounting chamber (103); The second check valve (213) is installed on the drive chamber (202) to allow external gas to flow into the drive chamber (202) in one direction.

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