Secretion sampling device for obstetrics and gynecology department

Abstract

The invention discloses a secretion sampling device for gynaecology and obstetrics, relates to the technical field of medical instruments, and aims to solve the technical problem that an expansion structure of a traditional device adopts duckbill pliers, and the inner wall of a genital organ is easily mechanically stimulated or scratched, and the secretion sampling device comprises a fixed plate, an expansion mechanism, a scraping component, a gathering component and an extraction component. Through the gathering and expanding design of the expanding plate, the expanding plate is in a sealed barrel shape and small in diameter during gathering, so that the expanding plate can be safely put into the genital organ and protect an internal sample, and the inner wall of the genital organ protrudes through the gap during expanding to expose a sampling area; by matching with the bending surface and the back hook structure of the scraping plate, inner wall samples can be efficiently scraped during rotation, the samples are synchronously sucked by the cotton slivers, and meanwhile, the samples can be pushed to be gathered, so that sufficient sample quantity is ensured; safe placing, accurate scraping, efficient collection and sample protection in the sampling process are integrally achieved, the device is suitable for different sampling scenes, sampling convenience and sample integrity are improved, and subsequent detection reliability is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to a secretion sampling device for obstetrics and gynecology. Background Art

[0002] Existing gynecological secretion sampling devices have significant flaws in terms of insertion safety and sample protection. Traditional devices use duckbill forceps for expansion, which are mostly fixed-size designs. Due to their large diameter and lack of elastic adjustment ability, they can easily cause mechanical irritation or scratches to the inner wall of the genitals during insertion, causing severe discomfort, especially for patients with sensitive mucosa. Furthermore, the device lacks a sealed protection mechanism inside during sampling, allowing external contaminants to easily enter and come into contact with the sample, leading to sample contamination and interfering with the accuracy of subsequent test results. Furthermore, some devices fail to effectively isolate the sample after sampling, allowing the sample to rub off other parts of the device, further reducing sample integrity. Existing technologies have significant deficiencies in terms of sampling area exposure and scraping efficiency. Traditional devices have a fixed expansion range, making it difficult to adapt to the differences in genital anatomy between patients, often resulting in insufficient exposure of the sampling area. In particular, secretions from hidden areas such as the vaginal sidewall and around the cervix are difficult to collect effectively. Furthermore, the scraping components are mostly flat or straight rod structures that cannot conform to the curved surface of the inner wall, making it easy to miss samples during scraping. Furthermore, due to the lack of a targeted retention design, some scraped samples will slide due to gravity, resulting in insufficient sample volume, which cannot meet the sample volume requirements for high-precision testing. Existing devices have obvious limitations in terms of sample collection and operational adaptability. Traditional sampling tools mostly rely on a single swab for sample adsorption and are unable to actively gather scattered samples, resulting in some samples remaining inside the device or at the sampling site, causing sample waste. The operational process is cumbersome, and steps such as expansion, scraping, and collection need to be completed step by step, and even tool replacement is required. This not only increases the operational burden on medical staff, but also makes it difficult to adapt to different sampling scenarios (such as the sampling needs of patients of different ages and physiological conditions). In addition, the problem of uneven sample distribution is common, which can easily lead to distortion of some indicators during testing and affect diagnostic reliability. In view of this, we propose a secretion sampling device for obstetrics and gynecology. Summary of the Invention

[0003] The purpose of the present invention is to provide a gynecological secretion sampling device to solve the technical problem that the expansion structure of the traditional device adopts duckbill forceps, which easily causes mechanical stimulation or scratches to the inner wall of the genitals.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: a gynecological secretion sampling device, comprising a fixed plate with a handle, an expansion mechanism disposed on one side of the fixed plate, a scraping assembly and a gathering assembly, and an extraction assembly disposed on the other side of the fixed plate, wherein the expansion mechanism comprises a plurality of expansion plates slidably adapted to one side of the fixed plate, and the plurality of expansion plates are capable of expanding or gathering; The scraping assembly includes a plurality of scrapers, which are arranged in a circular array and rotatably connected to one side of a fixed plate through an insertion rod, and the scrapers are located inside a plurality of expansion plates, each scraper side surface is provided with a bent surface, and each scraper end is fixedly connected to a return hook; The extraction assembly includes a plurality of cotton strips, and the plurality of cotton strips are arranged inside the return hook; When the expansion plates are gathered together, several expansion plates are in the shape of a sealed cylinder with a small diameter, and the bent surface on the scraper is in a bent state, which is used to protect the internal samples; when several expansion plates are expanded, a gap is left between two adjacent expansion plates, and the inner wall of the genitals protrudes through the gap, so that it is exposed to the inside of the device, and the scraper is rotated to scrape the sample on the inner wall, the cotton sliver absorbs the sample, and can also push the sample to gather it. The present invention adopts the gathering and expansion design of the expansion plates. When gathered, it is in the shape of a sealed cylinder with a small diameter, which is convenient for safe placement in the genitals and protection of internal samples. When expanded, the inner wall of the genitals protrudes through the gap to expose the sampling area; with the bent surface and the hook structure of the scraper, the inner wall sample can be efficiently scraped when rotated, and the cotton sliver simultaneously absorbs the sample and can push the sample to gather it, ensuring sufficient sample volume; the overall sampling process realizes safe placement, precise scraping, efficient collection and sample protection, adapts to different sampling scenarios, improves sampling convenience and sample integrity, and ensures the reliability of subsequent testing.

[0005] Preferably, the expansion mechanism also includes a fixed cylinder with a thread, the fixed cylinder is fixedly sleeved on the inner wall of the fixed plate, an adjusting wheel is rotatably sleeved on the surface of the fixed cylinder, and the adjusting wheel is rotatably connected to the fixed plate, one side of the adjusting wheel is provided with arc holes in a circular array, and several expansion plates are movably connected to one side of the fixed plate through an insertion rod in a circular array, and the insertion rod on the expansion plate passes through the fixed plate and the arc hole.

[0006] Preferably, guide heads are arranged at the ends of several of the expansion plates, an elastic film is arranged on the surface of the guide head, and the ends of the elastic film are fixedly connected to the expansion plates.

[0007] Preferably, the scraping assembly further comprises a threaded barrel, the threaded barrel is threadably fitted inside the fixed barrel, and a ratchet barrel is slidably fitted inside the threaded barrel.

[0008] Preferably, a transmission rod is arranged inside the pawl cylinder, a ratchet cylinder is arranged on the surface of the transmission rod, and the ratchet cylinder is meshed with the pawl cylinder.

[0009] Preferably, a sampling cotton is arranged at the end of the threaded barrel, a conical rubber sheet is fixedly sleeved on the surface of the end of the threaded barrel, and a plurality of scrapers are arranged in a circular array and are rotatably connected to one side of the guide head through an inserted rod.

[0010] Preferably, the extraction assembly further comprises a ratchet wheel, the ratchet wheel is meshedly fitted on the surface of the ratchet cylinder, and the end of the sliver is fixedly connected to the surface of the ratchet wheel.

[0011] Preferably, one side of each of the return hooks is fixedly connected to an extrusion sleeve, and the sliver passes through the extrusion sleeve, and the inner walls on both sides of each of the extrusion sleeves are fixedly connected to a cross bar; Among them, the ratchet cylinder and the pawl cylinder are meshed and matched, causing the threaded cylinder to rotate and move to the outside through the thread adaptation. At this time, the ratchet cylinder is meshed and connected with the pawl wheel, causing the pawl wheel to rotate, and the tampon is rolled up. When passing through the extrusion sleeve, the cross bar expels the excess sample liquid in the tampon and flows into the inside of the tampon behind to make it evenly distributed. The curved surface and the hook design of the scraper in the present invention can scrape and retain the inner wall sample of the genitals in a targeted manner. The scraper with an inclined angle can guide the sample to the sampling cotton, and cooperate with the cotton strip to adsorb the sample liquid to realize the integration of "scraping, guiding, and adsorption"; the gathering component pushes the deposited sample liquid to the cotton strip through the push plate to avoid waste of sample residue and ensure sufficient sample volume; in addition, the sampling cotton and cotton strip are respectively adapted to solid secretions and liquid samples to meet the requirements of different tests for sample morphology.

[0012] Preferably, the gathering assembly includes a cam, the cam is fixedly connected to the end of the insertion rod on the scraper, and the surface of the protrusion on the guide head is sleeved with a first spring.

[0013] Preferably, a movable plate is slidably sleeved on the surface of the convex block on the guide head, and the movable plate is in movably contact with the cam, and a push plate is slidably connected to the holes in the movable plate through an insert rod, and the push plate is in movably contact with two of the expansion plates. After the sampling is completed, the conical rubber sheet can wrap the sampling cotton to avoid contamination caused by contact between the sample and other components; when the cotton strip is rolled up, the excess sample liquid is squeezed out through the cross bar of the extrusion sleeve, so that the sample is evenly distributed, reducing the error caused by uneven sample size during detection; the temporary retention function of the return hook for the sample can provide a backup sample when the main sampling component is accidentally omitted, further reducing the risk of deviation in the detection result.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts the gathering and expansion design of the expansion plate. When gathered, it is in the shape of a sealed cylinder with a small diameter, which is convenient for safe placement in the genitals and protection of internal samples. When expanded, the inner wall of the genitals is bulged through the gap to expose the sampling area; with the curved surface and the hook structure of the scraper, the inner wall sample can be efficiently scraped when rotating, and the cotton strip can simultaneously absorb the sample and push the flow of the sample to gather it, ensuring sufficient sample volume; the overall sampling process realizes safe placement, precise scraping, efficient collection and sample protection, adapts to different sampling scenarios, improves sampling convenience and sample integrity, and ensures the reliability of subsequent testing.

[0015] 2. The expansion plate and scraper of the present invention are both made of medical polyethylene, with an elastic film and surface lubrication treatment, which can effectively avoid scratching or irritation to the inner wall of the genitals during sampling; the expansion plate can achieve controllable expansion through an adjustment wheel, and the expansion amplitude can be adjusted according to the patient's condition to reduce discomfort; at the same time, the expansion plate in the gathered state is in the shape of a sealed cylinder, which can prevent external contaminants from entering during the sampling process and ensure the purity of the sample.

[0016] 3. The curved surface and hook design of the scraper in the present invention can scrape and retain samples from the inner wall of the genitals in a targeted manner. The scraper with an inclined angle can guide the sample to the sampling cotton, and cooperate with the cotton strip to adsorb the sample liquid, thereby realizing the integration of "scraping, guiding, and adsorption"; the gathering component pushes the deposited sample liquid to the cotton strip through the push plate, avoiding waste of sample residue and ensuring sufficient sample volume; in addition, the sampling cotton and cotton strip are respectively adapted to solid secretions and liquid samples, meeting the requirements of different tests for sample morphology.

[0017] 4. After sampling is completed, the conical rubber sheet can wrap the sampling cotton to prevent the sample from contacting other components and causing contamination; when the cotton strip is rolled up, the excess sample liquid is squeezed out through the cross bar of the extrusion sleeve to make the sample evenly distributed, reducing the error caused by uneven sample size during testing; the temporary retention function of the return hook for the sample can provide a backup sample when the main sampling component is accidentally omitted, further reducing the risk of deviation in the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional partial structure of the scraping component of the present invention; Figure 4 This is a schematic diagram of the three-dimensional exploded structure of the scraping component of the present invention; Figure 5 This is a schematic diagram of the three-dimensional exploded structure of the aggregation assembly of the present invention; Figure 6 Schematic diagram of the three-dimensional explosion structure of the expansion mechanism of the present invention Figure 1 ; Figure 7 Schematic diagram of the three-dimensional explosion structure of the expansion mechanism of the present invention Figure 2 ; Figure 8 This is a schematic diagram of the three-dimensional structure of the scraping assembly of the present invention, showing the three-dimensional structure of the scraper; Figure 9 This is a schematic diagram of an enlarged three-dimensional structure of the extraction assembly of the present invention, showing the three-dimensional structure of the extrusion sleeve; Figure 10 This is a schematic diagram of the structure of the expansion plate of the present invention in the expanded state; Figure 11 This is a schematic diagram of the structure of the expansion plates of the present invention in the usage state when gathered.

[0019] Explanation of the numbers in the figure: 1. Fixed plate; 2. Expansion mechanism; 21. Fixed cylinder; 22. Adjusting wheel; 221. Arc hole; 23. Expansion plate; 24. Guide head; 25. Elastic film; 3. Scraping assembly; 31. Threaded cylinder; 32. Ratchet cylinder; 33. Transmission rod; 331. Ratchet cylinder; 34. Sampling cotton; 35. Conical rubber sheet; 36. Scraper; 361. Bending surface; 362. Return hook; 4. Extraction assembly; 41. Ratchet wheel; 42. Cotton strip; 43. Extrusion sleeve; 431. Cross bar; 5. Gathering assembly; 51. Cam; 52. First spring; 53. Movable plate; 54. Push plate. DETAILED DESCRIPTION

[0020] like Figure 1 - Figure 7 and Figure 10 - Figure 11 As shown, the present invention relates to a gynecological secretion sampling device, which includes a fixing plate 1 with a handle, an expansion mechanism 2 arranged on one side of the fixing plate 1, a scraping component 3 and a gathering component 5, and an extraction component 4 arranged on the other side of the fixing plate 1.

[0021] The expansion mechanism 2 includes a fixed cylinder 21 with a thread, which is fixedly sleeved on the inner wall of the fixed plate 1. An adjusting wheel 22 is rotatably sleeved on the surface of the fixed cylinder 21, and the adjusting wheel 22 is rotatably connected to the fixed plate 1. An arc-shaped hole 221 is opened in a ring array on one side of the adjusting wheel 22, and a number of expansion plates 23 are movably connected to the fixed plate 1 through an insertion rod in a ring array on one side of the fixed plate 1, and the insertion rod on the expansion plate 23 passes through the fixed plate 1 and the arc-shaped hole 221. Guide heads 24 are arranged at the ends of the several expansion plates 23, and an elastic film 25 is arranged on the surface of the guide head 24, and the end of the elastic film 25 is fixedly connected to the expansion plate 23.

[0022] It is worth noting that the elastic film 25 is an existing conventional technology, which has the function of preventing the expansion plate 23 from scratching the female internal genitalia, and the surface of the elastic film 25 can be coated with a protective liquid with a lubricating effect for smooth sampling and testing; the expansion plate 23 is made of medical polyethylene, which has stable chemical properties, soft texture and smooth surface, is not prone to residual impurities, and has minimal irritation to the genital mucosa.

[0023] Specifically, by rotating the adjusting wheel 22, the expansion plates 23 are expanded or gathered. When gathered, the expansion plates 23 are in the shape of a sealed cylinder to protect the samples inside. When expanded, gaps are left between the expansion plates 23, and the inner wall of the genitals protrudes through the gaps to scrape off the samples inside the genitals.

[0024] The expansion plate 23 and scraper 36 of the present invention are both made of medical polyethylene, and combined with the elastic film 25 and surface lubrication treatment, they can effectively avoid scratching or irritation to the inner wall of the genitals during sampling; the expansion plate 23 can achieve controllable expansion through the adjustment wheel 22, and the expansion amplitude can be adjusted according to the patient's condition to reduce discomfort; at the same time, the expansion plate 23 in the gathered state is in the shape of a sealed cylinder, which can prevent external contaminants from entering during the sampling process and ensure the purity of the sample.

[0025] like Figure 3 - Figure 6 、 Figure 8 and Figure 10 - Figure 11 As shown, the scraping assembly 3 includes a threaded barrel 31, which is threadedly adapted inside the fixed barrel 21, and a pawl barrel 32 is slidably adapted inside the threaded barrel 31. A transmission rod 33 is arranged inside the pawl barrel 32, and a ratchet barrel 331 is arranged on the surface of the transmission rod 33, and the ratchet barrel 331 is meshed with the pawl barrel 32. A sampling cotton 34 is arranged at the end of the threaded barrel 31, and a conical rubber sheet 35 is fixedly sleeved on the end surface of the threaded barrel 31. One side of the guide head 24 is in an annular array and is rotatably connected to a number of scrapers 36 through an insertion rod, and the end of the insertion rod on the scraper 36 is plugged and adapted to the transmission rod 33. A bending surface 361 is arranged on the side surface of each scraper 36, and a return hook 362 is fixedly connected to the end of each scraper 36.

[0026] It is worth noting that after the sampling is completed, the threaded barrel 31 adapted by the thread is rotated outward and is blocked by one side of the conical rubber sheet 35, causing the conical rubber sheet 35 to wrap the sampling cotton 34 for protection to avoid contact with other components and affect the test results; the return hook 362 on the scraper 36 is an existing conventional equipment, which is made of medical polyethylene material with stable chemical properties, soft texture and smooth surface. It is not easy to retain impurities and has minimal irritation to the genital mucosa, and part of the sample flows into the return hook 362 for preservation; the scraper 36 is fixed on the insertion rod at an angle so that when it rotates, it can make the sample flow to the position of the sampling cotton 34 for absorption.

[0027] Specifically, when the expansion plates 23 gather together, the scraper 36 is compressed, causing the bending surface 361 to bend; when the expansion plates 23 expand, the scraper 36 moves with the expansion plates 23 through elastic action, and the inner wall of the female genitals protrudes from the gap, and drives several scrapers 36 to rotate, scraping out samples from the inner wall of the genitals.

[0028] like Figure 3 and Figure 9 As shown, the extraction assembly 4 includes a ratchet wheel 41, which is meshed with the surface of the ratchet cylinder 331. A cotton strip 42 is arranged inside each return hook 362, and the end of the cotton strip 42 is fixedly connected to the surface of the ratchet wheel 41. One side of each return hook 362 is fixedly connected to an extrusion sleeve 43, and the cotton strip 42 passes through the extrusion sleeve 43. The inner walls on both sides of each extrusion sleeve 43 are fixedly connected to a cross bar 431.

[0029] Specifically, the ratchet cylinder 331 is meshed with the pawl cylinder 32, causing the threaded cylinder 31 to rotate and move outward through the threaded adaptation. At this time, the ratchet cylinder 331 is meshed and connected with the pawl wheel 41, causing the pawl wheel 41 to rotate, and the cotton strip 42 is rolled up. When it passes through the extrusion sleeve 43, the excess sample liquid in the cotton strip 42 is squeezed out through the cross bar 431 and flows into the interior of the cotton strip 42 behind, so that it is evenly distributed.

[0030] After sampling is completed, the conical rubber sheet 35 of the present invention can wrap the sampling cotton 34 to prevent the sample from contacting other components and causing contamination; when the cotton strip 42 is rolled up, the excess sample liquid is squeezed out through the extrusion sleeve 43 and the cross bar 431, so that the sample is evenly distributed, reducing the error caused by uneven sample volume during testing; the temporary retention function of the return hook 362 for the sample can provide a backup sample when the main sampling component is accidentally omitted, further reducing the risk of deviation in the test results.

[0031] like Figure 5 and Figure 8 As shown, the gathering assembly 5 includes a cam 51, which is fixedly connected to the end of the insertion rod on the scraper 36, and a first spring 52 is sleeved on the surface of the protrusion on the guide head 24. A movable plate 53 is slidably sleeved on the surface of the protrusion on the guide head 24, and the movable plate 53 is in movably contact with the cam 51. The holes on the movable plate 53 are slidably connected to push plates 54 through the insertion rods, and the push plates 54 are in movably contact with two of the expansion plates 23.

[0032] Specifically, when the scrapers 36 rotate, a force is applied to the movable plate 53 through the protruding portion of the cam 51, causing the movable plate 53 to move to one side, and then a force is applied to it through the first spring 52 to move it back. The push plate 54 slides on the surface of the expansion plate 23, and the sample liquid deposited under the expansion plates 23 can be pushed into the interior of the device, so that the cotton strip 42 can fully absorb the sample liquid.

[0033] The curved surface 361 and the hook 362 of the scraper 36 in the present invention are designed to scrape and retain samples from the inner wall of the genitals in a targeted manner. The scraper 36 with an inclined angle can guide the sample to the sampling cotton 34, and cooperate with the cotton strip 42 to adsorb the sample liquid, thereby realizing the integration of "scraping, guiding, and adsorption"; the gathering component 5 pushes the deposited sample liquid to the cotton strip 42 through the push plate 54, avoiding waste of sample residue and ensuring sufficient sample volume; in addition, the sampling cotton 34 and the cotton strip 42 are respectively adapted to solid secretions and liquid samples, meeting the requirements of different tests for sample morphology.

[0034] Working principle: This embodiment provides a gynecological secretion sampling device. When in use, according to the patient's condition, apply lubricating fluid to the elastic film 25, slowly insert the expansion plates 23 that are gathered together into the genitals, and rotate the adjustment wheel 22 to cause the expansion plates 23 to expand appropriately according to the patient's condition. At this time, the transmission rod 33 is rotated, and the pawl cylinder 32 and the pawl wheel 41 are meshed and slidably connected with the ratchet cylinder 331. The transmission rod 33 drives the scrapers 36 to rotate, scraping the sample from the inner wall of the genitals into the inner wall. The sample flows into the scraper 36 and is absorbed by the cotton strip 42. At the same time, part of the sample gathers in the lower half of the expansion plates 23. The scraper 36 drives the cam 51 to rotate. The cam 51 exerts a force on the movable plate 53 through the raised part and the first spring 52 exerts a force on it, causing the movable plate 53 to reciprocate. The push plate 54 pushes the gathered sample to the cotton strip 42 for absorption. The sample is sent to the sampling cotton 34 by the inclined scraper 36 for absorption. After the collection is completed, the device is first removed from the genitals, and the adjustment wheel 22 is rotated to bring the expansion plates 23 together. The transmission rod 33 is then rotated, and the ratchet cylinder 331 is meshed with the ratchet cylinder 32 and the ratchet wheel 41, causing the threaded cylinder 31 to rotate and pass through. The threaded adapter is removed from the fixed cylinder 21, and the sampling cotton 34 can be taken out for testing; when the ratchet wheel 41 rotates, it can reel in the cotton strips 42. When the cotton strips 42 pass through the extrusion sleeve 43, the cross bar 431 squeezes out the excess sample. The subsequent moving cotton strips 42 absorb the excess sample and prevent the cotton strips 42 from being entangled on the ratchet wheel 41, causing the sample to flow out and affect the test results.

[0035] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A gynecological secretion sampling device, comprising a fixing plate (1) with a handle, an expansion mechanism (2) arranged on one side of the fixing plate (1), a scraping component (3) and a gathering component (5), and an extraction component (4) arranged on the other side of the fixing plate (1), characterized in that: The expansion mechanism (2) comprises a plurality of expansion plates (23) slidably adapted on one side of the fixed plate (1), and the plurality of expansion plates (23) are capable of expanding or gathering; The scraping assembly (3) includes a plurality of scrapers (36), the plurality of scrapers (36) being arranged in a circular array and being rotatably connected to one side of the fixed plate (1) via an insert rod, and the scrapers (36) being located inside the plurality of expansion plates (23), the side surface of each scraper (36) being provided with a bending surface (361), and the end of each scraper (36) being fixedly connected with a return hook (362); The extraction assembly (4) includes a plurality of cotton strips (42), and the plurality of cotton strips (42) are arranged inside the return hook (362); When the expansion plates (23) are gathered together, several expansion plates (23) are in the shape of a sealed cylinder with a small diameter, and the upper bending surface (361) of the scraper (36) is in a bent state, which is used to protect the internal sample; when several expansion plates (23) are expanded, a gap is left between two adjacent expansion plates (23), and the inner wall of the genitals protrudes through the gap, so that it is exposed to the inside of the device, and the scraper (36) is rotated to scrape the sample on the inner wall, and the cotton strip (42) absorbs the sample and can also push the sample to make it gather.

2. A gynecological secretion sampling device according to claim 1, characterized in that: The expansion mechanism (2) further comprises a fixing cylinder (21) with a thread, the fixing cylinder (21) being fixedly sleeved on the inner wall of the fixing plate (1), an adjusting wheel (22) being rotatably sleeved on the surface of the fixing cylinder (21), and the adjusting wheel (22) being rotatably connected to the fixing plate (1), one side of the adjusting wheel (22) being provided with arc-shaped holes (221) in a circular array, a plurality of the expansion plates (23) being movably connected to one side of the fixing plate (1) via insertion rods in a circular array, and the insertion rods on the expansion plates (23) passing through the fixing plate (1) and the arc-shaped holes (221).

3. The gynecological secretion sampling device according to claim 2, characterized in that: A guide head (24) is arranged at the end of the plurality of expansion plates (23), an elastic film (25) is arranged on the surface of the guide head (24), and the end of the elastic film (25) is fixedly connected to the expansion plate (23).

4. The gynecological secretion sampling device according to claim 3, characterized in that: The scraping assembly (3) further comprises a threaded barrel (31), wherein the threaded barrel (31) is threadably fitted inside the fixed barrel (21), and a ratchet barrel (32) is slidably fitted inside the threaded barrel (31).

5. The gynecological secretion sampling device according to claim 4, characterized in that: A transmission rod (33) is arranged inside the ratchet cylinder (32), a ratchet cylinder (331) is arranged on the surface of the transmission rod (33), and the ratchet cylinder (331) is meshed and matched with the ratchet cylinder (32).

6. The gynecological secretion sampling device according to claim 5, characterized in that: The end of the threaded cylinder (31) is provided with a sampling cotton (34), the surface of the end of the threaded cylinder (31) is fixedly sleeved with a conical rubber sheet (35), and a plurality of scrapers (36) are arranged in an annular array and are rotatably connected to one side of the guide head (24) through an insertion rod.

7. The gynecological secretion sampling device according to claim 6, characterized in that: The extraction assembly (4) further comprises a ratchet wheel (41), the ratchet wheel (41) being meshed and fitted on the surface of the ratchet cylinder (331), and the end of the cotton strip (42) being fixedly connected to the surface of the ratchet wheel (41).

8. The gynecological secretion sampling device according to claim 7, characterized in that: One side of each return hook (362) is fixedly connected to an extrusion sleeve (43), and the cotton strip (42) passes through the extrusion sleeve (43), and the inner walls on both sides of each extrusion sleeve (43) are fixedly connected to a crossbar (431); The ratchet cylinder (331) is meshed with the pawl cylinder (32), causing the threaded cylinder (31) to rotate and move outward through the threaded adaptation. At this time, the ratchet cylinder (331) is meshed with the pawl wheel (41), causing the pawl wheel (41) to rotate and rewind the cotton strip (42). When the cotton strip (42) passes through the extrusion sleeve (43), the cross bar (431) expels the excess sample liquid in the cotton strip (42) and flows into the interior of the cotton strip (42) behind it, so that it is evenly distributed.

9. The gynecological secretion sampling device according to claim 8, characterized in that: The gathering assembly (5) comprises a cam (51), the cam (51) being fixedly connected to the end of the insertion rod on the scraper (36), and a first spring (52) being sleeved on the surface of the convex block on the guide head (24).

10. The gynecological secretion sampling device according to claim 9, characterized in that: A movable plate (53) is slidably sleeved on the surface of the upper projection of the guide head (24), and the movable plate (53) is in movably contact with the cam (51). A push plate (54) is slidably connected to the holes on the movable plate (53) via an insert rod, and the push plate (54) is in movably contact with two of the expansion plates (23).

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