KR20230011731A - Cytobrush for improved accuracy of uterine cervical cancer screening - Google Patents

Abstract

The present invention relates to a cytobrush for improving an accuracy of cervical cancer screening, comprising: a first shaft extending to a predetermined length and having a first hollow; a second shaft formed to a predetermined length to be at least partially inserted into the first hollow, and having a second hollow on an inner side; a third shaft configured to be at least partially inserted into the second hollow; at least one side brush extending laterally on a distal end of the first shaft; a front brush extended to a predetermined length at a front end of the third shaft; and a deployment brush provided at a distal end of the second shaft and configured to be deformed or deployed on the side brush according to a relative position difference between the second shaft and the first shaft. The cytobrush for improving an accuracy of cervical cancer screening according to the present invention can adjust an extension length of the front brush and a development length of the left and right brushes to improve an accuracy of collecting cervical cells regardless of a location of a transition zone, a size of a cervix, and an entrance to a vagina.

Description

Cytobrush for improved accuracy of uterine cervical cancer screening}

The present invention relates to a cytobrush, and more particularly, to a cytobrush for improving the accuracy of cervical cytology.

This study was conducted with the support of the Korea Health Industry Development Institute's health and medical technology research and development project funded by the Ministry of Health and Welfare. (Example of project identification number: HI19C0664010020)

Cytobrush is one of the tools for performing a method for diagnosing gynecological cancer, and is configured to collect cells from the cervix and perform cytology.

Cervical cells are largely divided into glandular epithelial cells and squamous epithelial cells. Glandular epithelial cells are mainly distributed in the section entering the uterus from the cervix, and squamous epithelial cells are mainly distributed in the part connecting from the inner wall of the vaginal canal to the cervix. At this time, there is a transitional zone (or transformation zone) in which glandular epithelial cells are transformed into squamous epithelial cells in the cervix. Most of the locations where abnormal cells occur are these transitional zones (or transformation zones), but precancerous lesions can also occur in areas where glandular epithelial cells are mainly distributed. Therefore, when performing cervical cytology, cells must be collected from various sites to increase the accuracy of diagnosis.

Regarding this conventional cytobrush, Korean Patent Publication No. 2018-0118902 is disclosed. However, as shown in FIG. 2, after menopause, the transitional zone is intruded into the inner cervix, which limits the location and amount of cells that can be collected by the existing cytobrush. In addition, there was a problem caused by not being able to respond to differences due to differences in the size of the cervix and vaginal entrance for each individual. For example, in women with a narrow vaginal entrance and inner diameter, the use of a large cytobrush causes tissue damage and pain. It became.

Korean Patent Publication No. 10-2018-0118902 has been disclosed.

In the present invention, the depth of entry into the cervix is adjusted to solve the above-mentioned problems of the conventional cytobrush, and the accuracy of cervical cytology can improve the accuracy of cell collection by adjusting the left and right widths corresponding to the size of the cervix. Its purpose is to provide a cytobrush for improvement.

As a means for solving the above problems, a first shaft formed by extending to a predetermined length and having a first hollow formed therein, formed to a predetermined length so that at least a part thereof can be inserted into the first hollow, and having a second hollow formed therein A second shaft, a third shaft configured to be at least partly inserted into the second hollow, at least one side brush extending in a lateral direction from the distal end of the first shaft, and a predetermined length at the front end of the third shaft. Cervical cells including a front brush extending to and a development brush provided at the distal end of the second shaft and configured to be deformed or developed on the side brush according to a relative position difference between the second shaft and the first shaft. A cytobrush for improving test accuracy may be provided.

Meanwhile, the spreading brush may be configured to overlap at least a part of the side brush.

Meanwhile, side brushes may be provided as a pair of left and right sides, and development brushes may be provided as a pair of left and right sides.

Meanwhile, each of the side brushes may include a side support formed by extending a predetermined length in a lateral direction and a plurality of fibers provided forward on the side support.

Meanwhile, each spreading brush may include a spreading extension portion having one side connected to the second shaft, extending to a predetermined length, and composed of an elastic material, and a plurality of fibers disposed on the spreading extension portion to face forward when unfolded. there is.

In addition, the spreading brush may be configured such that a lateral protruding and retracting length thereof may be adjusted while at least a part of the spreading brush is deformed on the side brush according to the adjustment of the longitudinal position of the second shaft.

On the other hand, the side brush may include a guide formed in the side direction so that the expansion extension can slide along a predetermined path.

Meanwhile, the guide may be a groove formed in the side support.

On the other hand, when there is no external force, the deployment extension may be configured to maintain at least a partially bent shape.

On the other hand, the front ends of the plurality of fibers may be aligned on the curved surface so that the side brush can contact the curved path corresponding to the shape of the cervix during use.

Meanwhile, the front brush may be configured to emerge from the front of the first shaft according to a relative positional difference between the third shaft and the first shaft.

In addition, the front brush may include a front brush extension formed to extend in the longitudinal direction and a plurality of fibers arranged in a radial direction along the circumference of the front brush extension.

Meanwhile, a spreading brush adjusting knob configured to adjust a relative position of the second shaft on the first shaft may be further included.

In addition, a front brush adjustment knob configured to adjust a relative position of the third shaft on the first shaft may be further included.

Meanwhile, the deployment brush is connected to the side brush by a hinge, and may be configured to be deployed on the side brush according to manipulation of the second shaft.

Since the cytobrush for improving the accuracy of cervical cytology according to the present invention can adjust the protruding length of the front brush and the extension length of the left and right brushes, it is possible to collect cervical cells regardless of the location of the transitional zone, the size of the cervix, and the entrance of the vagina. Accuracy can be improved.

1 is a diagram showing a conceptual diagram of cell distribution centered on the cervix before menopause.
2 is a diagram showing a conceptual diagram of cell distribution centered on the cervix after menopause.
3 is a plan view of a cytobrush according to an embodiment of the present invention.
4 is an exploded perspective view of a cytobrush according to an embodiment of the present invention.
5 is a cross-sectional view of a cytobrush according to an embodiment of the present invention.
6 is an operating state diagram of the front brush and the spreading brush.
7 is a conceptual diagram illustrating the operation of the front brush when the front brush control knob is manipulated.
8 is a conceptual diagram illustrating an operation of a spreading brush when a spreading brush control knob is manipulated.
9 is a perspective view of a cytobrush that is another embodiment according to the present invention.
10 is an operating state diagram of a spreading brush in the embodiment of FIG. 9 .
11 to 15 are state diagrams showing the use of a cytobrush, which is an embodiment according to the present invention.

Hereinafter, a cytobrush for improving the accuracy of cervical cytology according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, in the description of the following embodiments, the name of each component may be called a different name in the art. However, if they have functional similarity and identity, even if a modified embodiment is employed, it can be regarded as an equivalent configuration. In addition, signs added to each component are described for convenience of description. However, the contents of the drawings in which these symbols are written do not limit each component to the scope in the drawings. Likewise, even if an embodiment in which the configuration in the drawings is partially modified is employed, it can be regarded as an equivalent configuration if there is functional similarity and identity. In addition, in light of the level of a general technician in the relevant technical field, if it is recognized as a component that should be included, the description thereof will be omitted.

3 is a plan view of a cytobrush according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view of a cytobrush according to an embodiment of the present invention.

As shown, the cytobrush according to one embodiment of the present invention is configured such that one side enters the vaginal canal through the vaginal entrance and contacts the cervix to collect cells. At this time, it may be configured to adjust the protruding and retracting length of the front brush 400 entering the internal cervix and the area in contact with the external cervix.

Cytobrush, which is an embodiment according to the present invention, includes a first shaft 100, a second shaft 200, a third shaft 300, a front brush 400, a side brush 500, a spreading brush 600, a front brush It may be configured to include a brush control knob 820 and a spreading brush control knob 810 .

The first shaft 100, the second shaft 200, and the third sharp are formed to extend at a predetermined distance in the longitudinal direction, and may be configured to be movable relative to each other in the longitudinal direction.

The first shaft 100 may be provided on the outermost side, the side brush 500 may be provided on the front side, and the control knob may be provided on the rear side.

A hollow may be formed inside the first shaft 100 in the longitudinal direction so that the second shaft 200 and the third shaft 300 to be described later may be inserted.

At least a portion of the second shaft 200 may be inserted into the hollow of the first shaft 100 . The second shaft 200 may be provided with spreading brushes 600 on both sides of the front side. In addition, a second shaft protrusion 210 is provided on the rear side so that its position in the longitudinal direction can be adjusted in association with the spreading brush control knob 810 to be described later. The second shaft 200 may be configured to be hollow in the longitudinal direction so that the third shaft 300 can be inserted therein.

The third shaft 300 is configured so that at least a part thereof can be inserted inside the second shaft 200, is connected to the rear of the front brush 400 on the front side, and has a third shaft protrusion 310 on the rear side. It can be configured to adjust the position in the longitudinal direction in association with the front brush control knob 820 to be described later.

The aforementioned first shaft 100, second shaft 200, and third shaft 300 may be coaxially arranged with each other.

The front brush 400 is provided on the front side of the first shaft 100 and may be formed extending to a predetermined length in the longitudinal direction. The front brush 400 may include a front brush extension 410 and a first fiber 420 .

The front brush extension part 410 is configured to have a predetermined length so as to enter the internal cervix, but may be configured to a size that does not enter the uterus. The front brush extension 410 may be made of a material having rigidity capable of preventing excessive tissue damage while minimizing deformation during cell collection.

A plurality of first fibers 420 may be disposed along the circumferential direction of the front brush extension part 410 . The length of the first fiber 420 disposed on the front side of the first fiber 420 disposed on the rear side so that the first fiber 420 can be easily inserted when the front brush 400 enters the internal cervix. It may be configured somewhat shorter than the length. When the user rotates the cytobrush while the first fiber 420 is in contact with the internal cervix, it is possible to collect cervical cells while sweeping down the mucous membrane of the internal cervix.

The side brush 500 is configured to be in close contact with the external cervix to collect cells. The side brush 500 may include a side support 510 extending from the front end of the first shaft 100 to both left and right sides.

The side support 510 may be formed along a somewhat convex path toward the rear side of a plane perpendicular to the first shaft 100, that is, along a curved path. The curve is configured to be in close contact with the cervix corresponding to the three-dimensional shape of the cervix. The side support 510 may be provided with a plurality of second fibers 540 provided toward the front. The plurality of fibers 700 may have the same length. Accordingly, the curved surface formed by the front ends of the plurality of second fibers 540 may be convex to the rear side along the shape of the side support 510 . However, although not shown, the side support 510 is configured in a different shape, but the lengths of the plurality of second fibers 540 are adjusted so that the front end surfaces of the plurality of second fibers 540 can form a curved surface. It is possible to implement a modified embodiment that is. Meanwhile, an opening 530 may be formed in the central portion of the side support 510 so that the aforementioned front brush 400 may protrude. Meanwhile, the appearance and disappearance of the front brush 400 will be described in detail later.

The spreading brush 600 may be configured to increase a contact area with the ectocervix. The spreading brush 600 may be configured to be movable and deformable between a storage position disposed within the side brush 500 and a withdrawal position drawn out of the side brush 500 . The spreading brush 600 is stored in an initial position overlapping the side brush 500, and the length drawn out from the side brush 500 can be adjusted by manipulating the spreading brush control knob 810. . As an example, the spreading brush 600 may be configured to protrude in a lateral direction on the side brush 500 . The spreading brush 600 may be composed of a pair of left and right sides corresponding to the pair of left and right side brushes 500 .

Each of the pair of spreading brushes 600 may include a spreading extension part 610 and a plurality of third fibers 620 . The rear side of each deployment extension part 610 may be connected to the front side of the second shaft 200 . In addition, a plurality of third fibers 620 provided at a predetermined angle may be provided in a predetermined area from the distal end of the expansion extension 610 . The plurality of third fibers 620 may be provided in a region of the spreading extension 610 when the spreading brush 600 is accommodated on the side brush 500 and a region disposed inside the first shaft 100. there is. Therefore, it is possible for the spreading brush 600 to extend in a length wider than the width of the side brush 500 to capture cells in a wide area. The plurality of third fibers 620 may be provided at an angle toward the front side when the spreading brush 600 is unfolded. In addition, in the stored position, the plurality of third fibers 620 may be disposed in a somewhat deformed shape inside the first shaft 100, but when exposed on the side brush 500, the third fibers 620 are generally forward. can be transformed towards Meanwhile, since the spreading brush 600 is withdrawn from the side brush 500 along a curved path, the angle of the second fiber 540 of the side brush 500 and the angle of the third fiber 620 of the spreading brush 600 in the storage position. may be arranged differently.

On the other hand, the aforementioned first fiber 420, second fiber 540, and third fiber 620 have appropriate elasticity when in contact with tissue to trap cells, but can prevent excessive tissue damage. It may be made of a material having a degree of elasticity. The first fiber 420, the second fiber 540, and the third fiber 620 may be made of the same material and thickness, or may be made of different materials and thickness. As an example, the first fiber 420 may be made of a rather thin fiber, and the second fiber 540 and the third fiber 620 may be made of a rather thick polymer material.

On the outer surface of the rear side of the first shaft 100, a front brush control knob 820 and a spreading brush control knob 810 may be disposed side by side in the longitudinal direction (front and rear direction), and are configured to be independently operable. can The rear part of the first shaft 100 so that the protrusions 210 and 310 of the second shaft 200 and the third shaft 300 inside the first shaft 100 and the front brush control knob 820 come into contact with each other. A plurality of slits 110 formed in a predetermined length in the longitudinal direction may be provided on the side. Positions of the slits 110 formed on the first shaft 100 may be determined in accordance with the number and positions of the protrusions 210 and 310 . In this embodiment, it will be described on the premise that four slits 110 are formed at 90 degree intervals.

The front brush control knob 820 is configured to be rotatable on the first shaft 100 and can be configured to operate in association with the third shaft 300 . The front brush control knob 820 may have a screw thread on the inside, and the screw thread is a third shaft protrusion 310 protruding outward of the first shaft 100 through the slit 110 of the first shaft 100. is configured to support

The spreader brush control knob 810 is configured to be rotatable on the first shaft 100 and configured to operate in association with the second shaft 200, similar to the front brush control knob 820. The spreading brush control knob 810 also has a screw thread on the inside, and may be configured to be associated with the second shaft protrusion 210 exposed through the slit 110 to the outside of the first shaft 100 .

5 is a cross-sectional view of a cytobrush according to an embodiment of the present invention.

Referring to FIG. 5 , the first shaft 100, the second shaft 200, and the third shaft 300 are configured coaxially, and each may be configured to be positioned in the longitudinal direction.

The deployment extension 610 may be disposed from the inside of the first shaft 100 to the side of the side brush 500 through the guide hole 521 formed by penetrating the side support 510 of the side brush 500. there is. The deployment extension 610 passing through the guide hole 521 is configured to be supported and deployed by the guide groove 522 formed in the radial direction of the side support 510 .

Meanwhile, the front brush 400 is connected to the third shaft 300 in the central portion, and the spreading brush 600 is connected to the front side of the third shaft 300 but may be arranged so as not to interfere with each other. That is, the spreading extensions 610 of the spreading brush 600 may be respectively connected to points in opposite directions spaced apart from each other in front of the third shaft 300 .

6 is an operating state diagram of the front brush 400 and the spreading brush 600.

Referring to Figure 6 (a), the front side is shown when the cytobrush for improving the accuracy of cervical cytology is in a standby state. When entering the vaginal canal in a stored state, it is preferable that the outer diameter in the lateral direction and the protruding part in the front side be minimized to prevent damage to other tissues and pain. Therefore, as shown in FIG. 6(a), the front brush 400 is retracted rearward, and the spreading brush 600 is also located in a storage position superimposed on the side brush 500. In this state, it is possible to pass through the relatively narrow vaginal entrance and vaginal canal without damage or pain and to be adjacent to the cervix.

Referring to FIG. 6B , a state in which the front brush 400 advances due to the user's manipulation of the front brush control knob 820 is shown. The user may withdraw the front brush 400 by rotating the front brush control knob 820 . On the other hand, the user temporarily fixes the front brush 400 advanced to a certain length so that the cytobrush can stably adhere to the cervix while entering the cervix, and then the front brush 400 is additionally inserted into the cervix. The withdrawal length can be adjusted so that it can be entered.

Referring to FIG. 6(c) , a state in which the spreading brush 600 is unfolded due to the user's manipulation of the spreading brush control knob 810 is shown. As the spreading brush 600 extends in the radial direction, a contact area with the external cervix may be increased. At this time, the length to be deployed can be adjusted according to the user's manipulation, so that the outer diameter of the cytobrush can be developed to an appropriate size according to the size of the individual's cervix.

7 is a conceptual diagram illustrating the operation of the front brush 400 when the front brush control knob 820 is operated.

Referring to FIG. 7, the front brush 400 advances forward on the side support 510 along the third shaft 300 when the front brush control knob 820 rotates in one direction, and retreats when the front brush control knob 820 rotates in the opposite direction. can be configured to On the other hand, when the front brush 400 retracts after cells are collected using the cytobrush and at least a part of it enters the inside of the side support 510, the cells collected in the process of taking the cytobrush out of the body can be effectively protected. do.

8 is a conceptual diagram illustrating the operation of the spreading brush 600 when the spreading brush control knob 810 is manipulated.

Referring to FIG. 8 , when the user rotates the spreading brush control knob 810 in one direction, the second shaft 200 moves forward, and the spreading extension 610 connected to the end of the second shaft 200 It may be deployed along the guide hole 521 and the guide groove 522 of the side support 510 . Since the development brush 600 is developed along a curved path along the side support 510, it may be developed in a rearward concave shape corresponding to the external cervix. In this case, the spreading brush 600 may have a rearward concave shape when no external force is generated, that is, a shape disposed along a curved path that curves forward toward both end portions. That is, it unfolds smoothly in response to the extended shape of the side support 510, and can maintain a constant shape even when pressed during cell collection.

Meanwhile, after using the cyto brush, the user reversely rotates the spreading brush control knob 810 to return the spreading brush 600 to the inside of the side brush 500. In this standby position, the direction of the third fiber 620 of the spreading brush 600 and the direction of the second fiber 540 of the side brush 500 are different from each other, so that the protection of the collected cells can be maximized. In addition, since the spreading brush 600 is returned to its original position, the overall outer diameter of the cytobrush is reduced, so unnecessary tissue damage and pain can be prevented when the cytobrush is taken out of the body.

Hereinafter, another embodiment of the cytobrush according to the present invention will be described with reference to FIGS. 9 and 10. This embodiment may also include the same elements as those of the previous embodiment, and descriptions of these elements will be omitted to avoid redundant description.

9 is a perspective view of a cytobrush that is another embodiment according to the present invention.

Referring to FIG. 9 , the cyto brush according to another embodiment of the present invention may include a spreading brush 600 configured to be deployed by rotating on a side brush 500. The spreading brush 600 is composed of a pair, and may be hinged 910 connected to both sides of the side brush 500, respectively. At this time, the hinge 910 may be configured to prevent further angular deformation when the spreading brush 600 is maximally deployed, that is, when the side brush 500 and the spreading brush 600 are aligned substantially in parallel.

The pair of spreading brushes 600 may be configured such that the spreading angle can be adjusted by pulling the wire 900 connected to one side. Each spreading brush 600 is provided with one side of at least one wire 900, and the wire 900 can be connected to the front side of the second shaft 200 disposed inside through the opening of the side brush 500. there is. Accordingly, when the longitudinal position of the second shaft 200 is adjusted, the amount of expansion of the spreading brush 600 may be adjusted by pulling or pushing the wire 900 .

10 is an operating state diagram of the spreading brush 600 in the embodiment of FIG. 9 .

Referring to FIG. 10 , when the cytobrush is composed, the initial state of FIG. 10 (a) can be converted to the state of FIG. 10 (b) by rotating the spreading brush control knob. In this embodiment, the pair of spreading brushes 600 may be configured to be folded and unfolded in the same rotational direction at both ends of the side brushes 500. Therefore, after deployment, when the user rotates the front of the cytobrush in close contact with the cervix and rotates it in one direction, for example, when rotating in the opposite direction to the direction in which the deployment brush 600 is deployed, the deployment brush 600 is a side brush. While being supported by 500, the deployed state can be maintained.

Hereinafter, an example of using the cytobrush of the first embodiment described above will be described in detail with reference to FIGS. 11 to 15.

11 to 15 are state diagrams showing the use of a cytobrush, which is an embodiment according to the present invention.

Referring to FIG. 11, a state when the cytobrush is inserted through the vaginal entrance and the vaginal canal is shown. The user grips the first shaft 100 and enters the cytobrush into the vaginal canal through the vaginal entrance. At this time, the front brush 400 is in a retracted state, and the spreading brush 600 is located in the storage position. Accordingly, tissue damage and patient pain can be reduced by minimizing the entire outer diameter of the cytobrush and minimizing the protruding portion.

Referring to FIG. 12 , the user further enters the first shaft 100 into the vaginal canal to bring the front end of the brush into close contact with the external cervix.

Referring to FIG. 13 , the user advances the front brush 400 by rotating the front brush control knob 820 . At this time, the front part of the front brush 400 is inserted into the internal cervix.

Referring to FIG. 14 , the user then rotates the spreading brush control knob 810 to spread the spreading brush 600 . At this time, the user adjusts the amount of development of the spreading brush 600 according to the size of the cervix in a state in which a view of the cervix is secured.

Referring to FIG. 15, the user reciprocates or rotates the first shaft 100 at a predetermined angle to clean the tissue surface while the plurality of fibers 420, 540, and 620 are in contact with the internal cervix and the external cervix. Cells are harvested by scraping. When the cell collection is completed, the user manipulates the cytobrush in the reverse order of the above method, minimizes the outer diameter, and withdraws it outside the body to end the cell collection.

12 to 14 may proceed differently according to users.

As described above, the cytobrush for improving the accuracy of cervical cytology according to the present invention can adjust the protruding length of the front brush and the extension length of the left and right brushes, so it is irrelevant to the position of the transitional zone, the size of the cervix, and the entrance of the vagina. Thus, the accuracy of collection of cervical cells can be improved.

100: first shaft 110: slit
200: second shaft 210: second shaft protrusion
300: third shaft 310: third shaft protrusion
400: front brush 410: front brush extension
420: first fiber
500: side brush 510: side support
521: guide hole 522: guide groove
530: opening
540: second fiber
600: spreading brush 610: spreading extension
620: third fiber
700: fiber
810: Spreading brush control knob 820: Front brush control knob
900: wire

Claims (15)

a first shaft extending to a predetermined length and having a first hollow;
a second shaft formed to a predetermined length so that at least a portion thereof can be inserted into the first hollow, and having a second hollow formed therein;
a third shaft configured to be at least partially inserted into the second hollow;
at least one lateral brush extending from the distal end of the first shaft in a lateral direction;
a front brush extended to a predetermined length at the front end of the third shaft;
Improvement of cervical cytology accuracy including a spreading brush provided at the distal end of the second shaft and configured to deform or expand on the side brush according to a relative position difference between the second shaft and the first shaft Cytobrush for According to claim 1,
The developing brush is a cytobrush for improving the accuracy of cervical cytology, configured to overlap at least a part of the side brush. According to claim 2,
The side brushes are provided as a pair of left and right,
The development brush is a cytobrush for improving the accuracy of cervical cytology provided as a pair of left and right. According to claim 3,
Each of the side brushes,
a side support formed by extending a predetermined length in a lateral direction; and
A cytobrush for improving the accuracy of cervical cytology including a plurality of fibers provided toward the front on the side support. According to claim 4,
Each of the spreading brushes,
a deployment extension having one side connected to the second shaft, extending to a predetermined length, and made of an elastic material;
A cytobrush for improving the accuracy of cervical cytology including a plurality of fibers disposed on the deployment extension portion to face forward during deployment. According to claim 5,
The spreading brush,
A cytobrush for improving the accuracy of cervical cytology, configured so that at least a portion thereof is deformed on the side brush according to the adjustment of the longitudinal position of the second shaft and the length of the lateral protruding and retracting can be adjusted. According to claim 6,
The side brush is a cytobrush for improving the accuracy of cervical cytology including a guide formed in a lateral direction so that the deployment extension can slide in a predetermined path. According to claim 7,
The guide is a cytobrush for improving the accuracy of cervical cytology, which is a groove formed on the side support. According to claim 5,
Cytobrush for improving the accuracy of cervical cytology, wherein the deployment extension is configured to maintain a bent shape at least in part when there is no external force. According to claim 4,
The side brush is a cytobrush for improving the accuracy of cervical cytology in which the tips of the plurality of fibers are aligned on a curved surface so that they can be contacted in a curved path corresponding to the shape of the cervix during use. According to claim 10,
The front brush,
A cytobrush for improving the accuracy of cervical cytology, configured to emerge from the front of the first shaft according to the relative positional difference between the third shaft and the first shaft. According to claim 11,
The front brush,
a front brush extension formed extending in the longitudinal direction; and
A cytobrush for improving the accuracy of cervical cytology including a plurality of fibers arranged in a radial direction along the circumference of the front brush extension. According to claim 2,
The cytobrush for improving cervical cytology accuracy further comprising a spreading brush control knob configured to adjust the relative position of the second shaft on the first shaft. According to claim 13,
The cytobrush for improving cervical cytology accuracy further comprising a front brush control knob configured to adjust the relative position of the third shaft on the first shaft. According to claim 1,
The spreading brush,
It is connected to the side brush by a hinge,
A cytobrush for improving the accuracy of cervical cytology, configured to be deployed on the side brush according to manipulation of the second shaft.

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