Cytology brush
By designing a cell brush with a bent brush strip and an adjustable ring structure, the problem of bristle elongation affecting sampling efficiency was solved, enabling efficient and safe sampling in environments with different internal cavity sizes.
Patent Information
- Application Number
- CN202422747089.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Existing cell brushes suffer from bristle elongation when adapting to different diameter lumens, which affects sampling capacity, leading to reduced sampling efficiency and difficulty in adapting to various lumen sizes.
Design a brush head structure including a bent first section and a parallel second section of brush strip, combined with an adjusting ring. The diameter of the brush head can be adjusted by rotating the adjusting ring to adapt to different inner cavity sizes and ensure the sampling effect of the bristles.
It improves the sampling effect of the bristles in cavities of different diameters, expands the applicability of the cell brush, enhances its adaptability to different cavity environments, and improves sampling efficiency and safety.
Smart Images
Figure CN223554877U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cell extraction technical field, especially in a kind of cell brush. BACKGROUND
[0002] Cell brush is mainly used to collect cell sample on biological tissue surface in endoscopy process. Cell brush is applied in gastroscopy, enteroscopy and other endoscopy, and can be applied to extraction of endometrial tissue, and is widely applied. In order to adapt to wider inner cavity diameter environment, the bristles of cell brush are lengthened, which affects the sampling capacity of bristles, thereby reducing sampling efficiency. SUMMARY
[0003] The utility model aims at providing a kind of cell brush, to solve one or more technical problems existing in prior art, at least provide a beneficial choice or create conditions.
[0004] The technical scheme adopted to solve the above technical problems is as follows: a cell brush, comprising: a brush handle; a brush head installed at one end of the brush handle, the brush head comprising a brush bar, the brush bar comprising a first segment and a second segment connected together, the first segment being fixedly installed at one end away from the second segment on the brush handle, the first segment being arranged to bend away from the axis of the brush handle, the second segment being distributed in parallel with the brush handle, and the second segment being distributed with a plurality of bristles arranged in a ring; the number of the brush bars is at least two, and the two brush bars are distributed circumferentially around the axis of the brush handle.
[0005] The technical scheme at least has the beneficial effects as follows: after the brush bar is bent outward, the bristles can extract the cells on the sidewall of the inner cavity with a wider diameter by rotating the brush handle, without the need to lengthen the bristles, thereby ensuring the sampling effect of the bristles. In addition, due to the existence of the first segment, the second segment has a certain elastic deformation capacity relative to the brush handle, which can adapt to the inner cavity environment with a smaller diameter, thereby expanding the adaptation range of the cell brush.
[0006] As a further improvement of the above technical scheme, a adjusting ring is threadedly installed at one end of the brush handle close to the brush head, all the brush bars are sleeved in the adjusting ring, and the brush bars abut against the inner side of the adjusting ring. By rotating the adjusting ring in a forward direction, the adjusting ring can be axially moved towards the brush head relative to the axis of the brush handle, at this time, the adjusting ring pushes all the brush bars to move closer to each other, thereby reducing the overall diameter size of the brush head, which is convenient for adapting to the inner cavity environment with a smaller diameter. By rotating the adjusting ring in a reverse direction, the adjusting ring can be axially moved away from the brush head relative to the axis of the brush handle, at this time, the brush bars are expanded under the elastic action of themselves, thereby increasing the overall diameter size of the brush head, which is convenient for adapting to the inner cavity environment with a smaller diameter. Therefore, by rotating the adjusting ring, the overall diameter size of the brush head can be adjusted to adapt to the inner cavity environment with different sizes, thereby further expanding the adaptation range of the cell brush.
[0007] As a further improvement of the above technical solution, the adjusting ring is formed with a flared structure with gradually increasing diameter towards the brush head, and the brush strip is in contact with the inner wall of the flared structure. The flared structure can adapt to the bending angle of the first section, thereby improving the contact stability between the first section and the flared structure.
[0008] As a further improvement of the above technical solution, a positioning groove is provided on the inner side of the flared structure for embedding the brush strip. The positioning groove can ensure the stability of the brush strip, and also limit the rotation of the adjusting ring to prevent loosening of the adjusting ring.
[0009] As a further improvement of the above technical solution, a connecting section parallel to the brush handle is provided at the end of the first section away from the second section, and the end of the connecting section away from the first section is connected to the end of the brush handle. The connecting section can improve the elastic deformation capability of the first section, preventing the first section from breaking when it is bent relative to the brush handle.
[0010] As a further improvement of the above technical solution, an anti-slip pattern is provided on the outer side of the adjusting ring.
[0011] As a further improvement of the above technical solution, the bristles of different brush strips are staggered. This prevents the bristles of different brush strips from interfering with each other.
[0012] As a further improvement of the above technical solution, the bristles are bent in the circumferential direction away from the end of the brush strip. When the brush head is rotated in the direction of the bristle bend, the bristles can reduce damage to the inner cavity tissue. When the brush head is rotated against the direction of the bristle bend, the bristles can extract more cell samples from the inner cavity tissue, improving the sampling efficiency.
[0013] As a further improvement of the above technical solution, the second section is bent in the direction of the brush handle axis away from the end of the first section to form a third section. This prevents the end of the second section away from the first section from injuring the inner cavity side wall, improving the safety of the cell brush.
[0014] As a further improvement of the above technical solution, the number of brush strips is three, and the three brush strips are evenly distributed in the circumferential direction around the axis of the brush handle. BRIEF DESCRIPTION OF DRAWINGS
[0015] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
[0016] Figure 1 is a perspective view of the embodiment of the present application;
[0017] Figure 2 is a top view of the embodiment of the present application;
[0018] Figure 3 A cross-sectional structure schematic view of the embodiment of the utility model;
[0019] Figure 4 A structure schematic view of the adjusting ring in the embodiment of the utility model.
[0020] 100, brush handle;200, brush head;300, brush strip;301, first section;302, second section;303, third section;304, connecting section;310, bristles;400, adjusting ring;410, flared structure;420, positioning groove;430, non-slip pattern. DETAILED DESCRIPTION
[0021] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.
[0022] In the description of the utility model, it is understood that the orientation description, such as up, down, front, back, left, right and the like, is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as limiting the utility model.
[0023] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0024] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.
[0025] Refer to Figures 1-4The cell brush comprises a brush handle 100 and a brush head 200. The brush head 200 comprises three brush strips 300 which are uniformly distributed in the circumferential direction around the axis of the brush handle 100 and are fixedly installed on one end face of the brush handle 100. Specifically, the brush strip 300 is connected by a third section 303, a second section 302, a first section 301 and a connecting section 304 in sequence. It can be understood that one end of the third section 303 is connected with one end of the second section 302, the end of the second section 302 away from the third section 303 is connected with the first section 301, and the end of the first section 301 away from the second section 302 is connected with the connecting section 304. The end of the connecting section 304 away from the first section 301 is fixedly connected at the end of the brush handle 100. The third section 303, the second section 302, the first section 301 and the connecting section 304 are integrally formed.
[0026] Among them, the connecting section 304 and the second section 302 of the three brush strips 300 are arranged parallel to the axis of the brush handle 100. An included angle is formed between the length direction of the first section 301 and the length direction of the connecting section 304, that is, the first section 301 is bent away from the brush handle 100, so that the end of the first section 301 away from the connecting section 304 is arranged to be inclined to the axis direction of the connecting section 304. An included angle is formed between the length direction of the third section 303 and the length direction of the connecting section 304, that is, the third section 303 is bent towards the brush handle 100, so that the end of the third section 303 away from the second section 302 is arranged to be inclined to the axis direction of the connecting section 304. The length of the third section 303 is shorter than half the length of the first section 301. The cross section of the second section 302 is circular, and the second section 302 is annularly formed with a plurality of bristles 310, one end of the bristle 310 is arranged perpendicularly on the outer side wall of the brush strip 300 along the radial direction of the brush strip 300, and the end of the bristle 310 away from the brush strip 300 is arranged to be bent in the circumferential direction of the brush strip 300. The brush handle 100 can be a flexible metal guide wire made of stainless steel, and the brush handle 100 is generally sleeved in a catheter sleeve. By pulling the end of the brush handle 100 away from the brush head 200, the brush head 200 can be stretched out of or into the catheter sleeve.
[0027] In use, the catheter sleeve is inserted into the inner cavity tissue where the cell sample is needed to be extracted, and the brush handle 100 is pushed, so that the brush head 200 can be stretched out of the end of the catheter sleeve and axially moved or rotated, and the bristles 310 on the brush head 200 can touch the inner cavity tissue to realize the sampling of cells. Due to the existence of the first section 301, the second section 302 can have the elastic deformation ability of approaching the axis of the brush handle 100 relative to the brush handle 100, so as to adapt to the inner cavity environment with smaller diameter, thereby expanding the adaptation range of the cell brush.
[0028] When the brush head 200 moves axially, the bent brush strip 300 can reduce the risk of puncturing internal tissues by deforming its bristles, thus improving safety. When the brush head 200 rotates, rotating the brush head 200 in the direction of the bristle 310's bending (e.g.) Figure 2 Rotating the brush head clockwise (from a visual perspective) can reduce the damage of the bristles 310 to the inner tissue, and better protect the more fragile inner tissue; rotating the brush head 200 against the bending direction of the bristles 310 (as shown in the image) can reduce the damage of the bristles 310 to the inner tissue, and better protect the more fragile inner tissue. Figure 2 (Counterclockwise direction from the perspective) can improve the cell sampling effect of the bristles 310 and better extract relatively hard internal tissues.
[0029] In other embodiments, the number of brush strips 300 on the brush head 200 may be two or more. The two or more brush strips 300 are evenly distributed circumferentially around the axis of the brush handle 100, and one end of the two or more brush strips 300 is fixedly mounted on one end face of the brush handle 100.
[0030] An adjusting ring 400 is installed on the brush handle 100, and the adjusting ring 400 is sleeved on the end of the brush handle 100 near the brush head 200. An external thread is formed on the inner side of the adjusting ring 400, and an internal thread matching the external thread is formed on the outer side of the end of the brush handle 100 near the brush head 200, thereby threading the adjusting ring 400 to the brush handle 100. A flared structure 410 is integrally formed on the end of the adjusting ring 400 near the brush head 200. The diameter of one end of the flared structure 410 is the same as the diameter of the adjusting ring 400, and the diameter of the other end gradually increases in the direction away from the adjusting ring 400.
[0031] The connecting section 304 is located inside the adjusting ring 400 near the brush head 200. One end of the first section 301 is located inside the flared structure 410, and the first section 301 abuts against the inner wall of the flared structure 410.
[0032] Three positioning grooves 420 are evenly formed on the inner side of the flared structure 410 around the axis of the brush handle 100. The three positioning grooves 420 are correspondingly arranged with the three brush strips 300, so that when the adjusting ring 400 is rotated to a certain position, one end of the first section 301 of the three brush strips 300 is embedded in the corresponding positioning groove 420. The outer side of the adjusting ring 400 is formed with striped anti-slip texture 430 to facilitate the rotation of the adjusting ring 400 and prevent slippage.
[0033] By rotating the adjusting ring 400 in a forward direction, the adjusting ring 400 can be axially moved towards the brush head 200, at this time, the adjusting ring 400 can push the three brush bars 300 to move closer to each other, thereby reducing the overall diameter size of the brush head 200, and facilitating the adaptation to a smaller inner cavity environment. By rotating the adjusting ring 400 in a reverse direction, the adjusting ring 400 can be axially moved away from the brush head 200, at this time, the brush bars 300 can be expanded under the elastic action of the brush bars 300 and kept in contact with the flared structure 410, thereby increasing the overall diameter size of the brush head 200, and facilitating the adaptation to a smaller inner cavity environment. Therefore, by rotating the adjusting ring 400, the overall diameter size of the brush head 200 can be adjusted to adapt to inner cavity environments of various sizes, and the adaptation range of the cell brush is further improved.
[0034] The bristles 310 on the three brush bars 300 are staggered in the axial direction, which prevents the three brush bars 300 from interfering with each other when they are moved closer to each other.
[0035] The above describes the embodiments of the present application in detail in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.
Claims
1. A cell brush, characterized in that, The utility model relates to a toothbrush, including: A brush handle; A brush head is installed at one end of the brush handle, the brush head includes a brush strip, the brush strip includes a first section and a second section connected, the first section is fixedly installed at one end of the brush handle away from the second section, the first section is arranged in the direction away from the brush handle axis, the second section is distributed in parallel with the brush handle, and a plurality of bristles are distributed in the second section; the number of the brush strip is at least two, and two brush strips are distributed in the circumferential direction around the brush handle axis.
2. The cell brush of claim 1, wherein: The brush handle is screwedly installed with an adjusting ring close to one end of the brush head, and all the brush strips are sleeved in the adjusting ring.
3. The cell brush of claim 2, wherein: The adjusting ring is formed with a flared structure close to one end of the brush head, the diameter of the flared structure gradually increases in the direction close to the brush head, and the brush strip abuts against the inner wall of the flared structure.
4. The cell brush of claim 3, wherein: The inner side of the flared structure is provided with a positioning groove for embedding the brush strip.
5. The cell brush of claim 2, wherein: The first section is provided with a connecting section parallel to the brush handle away from one end of the second section, and one end of the connecting section away from the first section is connected with the end of the brush handle.
6. The cell brush of claim 2, wherein: The outer side of the adjusting ring is provided with anti-skid lines.
7. The cell brush of claim 1, wherein: The bristles of different brush strips are staggered.
8. The cell brush of claim 1, wherein: The bristles are arranged in the circumferential direction away from one end of the brush strip.
9. The cell brush of claim 1, wherein: The second section is curved to form a third section away from one end of the first section in the direction close to the brush handle axis.
10. The cell brush of claim 1, wherein: The number of the brush strip is three, and three brush strips are uniformly distributed in the circumferential direction around the axis of the brush handle.