A cell brush for easy sampling
By designing a sleeve and connector on the cell brush, the problems of inconvenient operation and poor sampling effect of existing cell brushes are solved, achieving more efficient and accurate tissue sampling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING ZHONGHANG MEDICAL TECH CO LTD
- Filing Date
- 2025-04-11
- Publication Date
- 2026-07-31
AI Technical Summary
Existing cell brushes are inconvenient to operate during sampling, easily damage cells along the way, and have poor sampling results.
A cell brush with a sleeve was designed, in which the brush head can move within the sleeve, be pushed out for sampling via a connector, and be stored within the sleeve to reduce the impact of scraping. The design incorporates magnets and channels to stabilize and control the movement of the brush head.
It improves sampling accuracy, reduces damage to tissues, and enhances the ease of operation and sampling effect.
Smart Images
Figure CN224572764U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a cell brush that facilitates sampling. Background Technology
[0002] Cell brushes are widely used in respiratory and digestive tract endoscopy as a tool for obtaining pathological specimens. Through pathological examination, they can provide important evidence for disease diagnosis. Endoscopic cell brushing is an examination method in which a cell brush is repeatedly brushed on the surface of the lesion under direct endoscopic vision to obtain diseased cells. It can brush lesion mucosal cells over a large area.
[0003] Referring to existing patent publication number CN220572211U, a cell brush for easy sampling includes: an operating handle and a sampling component; the sampling component includes a brush head, multiple sets of sampling spoons, and a connecting tube; the multiple sets of sampling spoons are arranged in a ring around the outer wall of the brush head; one end of the brush head is connected to the connecting tube via a connecting rod. This utility model of a cell brush for easy sampling utilizes the operating handle to actuate the sampling component, thereby enabling low-sensitivity tissue sampling from cavities such as the respiratory tract and digestive tract.
[0004] However, in actual use, existing cell brushes require rotation or scraping during cell sampling. The movement of the cell brush can easily collect cells along the way, and the entire mechanism needs to be moved during rotation, making it difficult to control the brush head alone. As a result, the operation is inconvenient, the sampling effect is poor, or it may cause damage to the tissue. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a cell brush that facilitates sampling. This invention features a sleeve on the outside of the cell brush, allowing the brush head to move within the sleeve. During sampling, the sleeve first enters the vicinity of the sampling location, and then a connecting member pushes the brush head out of the sleeve, enabling sampling at the designated location. The brush head is then retracted into the sleeve, reducing scraping along the sampling path and minimizing impact on sampling accuracy.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A cell brush for easy sampling includes:
[0008] The sleeve is cylindrical in shape and has an internal storage cavity;
[0009] A brush head is connected to the inside of the sleeve. One end of the brush head is fixed with a limiting part, and the other end of the brush head is connected with a connector that can penetrate the sleeve.
[0010] A magnet is fixed inside the sleeve;
[0011] The surface of the brush head is configured with sampling components.
[0012] The present invention further comprises the sampling assembly including: a probe, a base, and a sampling part;
[0013] The probe is installed at the other end of the brush head, the base is constructed on the surface of the brush head, and the sampling part is disposed on the surface of the base.
[0014] The present invention is further configured such that a channel is provided at the connection end of the sleeve and the brush head, the height of the channel is greater than the height of the base, and the base and the channel correspond one-to-one.
[0015] The present invention is further configured such that the length of the brush head is less than the length of the sleeve.
[0016] The present invention is further configured such that the length of the sampling part is greater than the radius of the sleeve, and the sampling part is constructed of an elastic material.
[0017] The present invention is further configured such that the diameter of the limiting part is larger than the diameter of the brush head, and the limiting part is magnetically connected to the magnet.
[0018] The present invention is further configured such that the connecting member passes through the magnet, and the connecting member and the brush head are integrally formed.
[0019] The beneficial effects of this utility model are as follows: By constructing a sleeve on the outside of the cell brush, and allowing the brush head to move within the sleeve, the sleeve first enters the vicinity of the sampling position during the sampling operation. Then, the connecting piece is pushed so that the connecting piece can push the brush head out of the sleeve, allowing the sampling operation to be performed at the sampling position. Afterward, the brush head is retracted into the sleeve, thereby reducing the scraping along the way that affects the sampling accuracy.
[0020] 1. This cell brush for easy sampling is equipped with a limiting part, a sleeve, and a magnet. Because the sleeve is constructed on the outside of the cell brush and the brush head can move inside the sleeve, when performing a sampling operation, the sleeve first enters near the sampling position, and then the connecting part is pushed so that the connecting part can push the brush head out of the sleeve, so that the sampling operation can be performed at the sampling position. Afterwards, the brush head is put back into the sleeve to reduce the scraping caused along the way and affect the sampling accuracy.
[0021] 2. This cell brush, which facilitates sampling, is equipped with a base and a channel. When the brush head moves inside the sleeve, the sampling part on the surface of the brush head can move along the direction of the channel through the cooperation of the base and the channel. After the brush head extends out of the sleeve, the connecting part can control the rotation of the brush head, which facilitates sampling and avoids the inconvenience caused by the overall operation. After sampling, the sampling part can also enter the sleeve through the channel, reducing the scraping of cell samples on the surface of the sampling part. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the first overall structure of a cell brush for easy sampling proposed in this utility model;
[0023] Figure 2 This is a schematic diagram of the second integral structure of a cell brush for easy sampling proposed in this utility model;
[0024] Figure 3 This invention provides a schematic diagram of the power source and volleyball fixing structure of a cell brush for easy sampling.
[0025] Figure 4 This invention presents a schematic diagram of the power source and volleyball fixing structure of a cell brush for easy sampling.
[0026] In the diagram: 1. Sleeve; 2. Connector; 3. Brush head; 4. Sampling section; 5. Probe; 6. Limiting section; 7. Magnet; 8. Base; 9. Channel; 10. Storage cavity. Detailed Implementation
[0027] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0028] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.
[0029] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.
[0030] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
[0031] Reference Figures 1 to 4 A cell brush for easy sampling includes: a sleeve 1, which is cylindrical and has an internal storage cavity 10 for storing the brush head 3 when not in use, protecting the brush head and preventing contamination; a brush head 3, which is connected to the inside of the sleeve 1, with a limiting part 6 fixed at one end of the brush head 3 and a connector 2 that can penetrate the sleeve 1 at the other end, so that the connector 2 can move in conjunction with the movement of the brush head 3, facilitating sampling operations, and preventing the brush head 3 from detaching from the sleeve 1 under the action of the limiting part 6; a magnet 7, which is fixed inside the sleeve 1, and is used to assist in positioning the brush head and stabilize the position of the brush head 3 in the sleeve 1; the surface of the brush head 3 is constructed with sampling components for actual sampling operations, which may be made of soft bristles or other materials suitable for cell sampling.
[0032] Specifically, refer to Figures 1 to 3 The sampling assembly includes a probe 5, a base 8, and a sampling section 4. The probe 5 is mounted on the other end of the brush head 3, the base 8 is constructed on the surface of the brush head 3, and the sampling section 4 is disposed on the surface of the base 8. In this embodiment, the probe 5 can serve as the direct contact part between the cell brush and the sampling target, guiding the brush head into the sampling position. Components such as a camera can be installed at the probe 5 for easy viewing. The base 8 serves as the supporting structure for the sampling section 4, ensuring that the sampling section 4 can be evenly distributed on the surface of the brush head 3, thereby covering a larger area during sampling. The sampling section 4 is the part that actually collects cells and can be made of soft bristles, micro / nano-scale fibers, or other materials suitable for cell sampling. The selection of these materials aims to ensure gentle contact and effective adhesion to cells while reducing damage to surrounding tissues.
[0033] Furthermore, a channel 9 is provided at the connection end between the sleeve 1 and the brush head 3. The height of the channel 9 is greater than the height of the base 8, and the base 8 and the channel 9 correspond one-to-one. This design ensures that the base 8 can be completely accommodated in the channel 9, while leaving a certain amount of space, and facilitating the movement of the sampling part 4. The one-to-one correspondence between the base 8 and the channel 9 ensures that each base 8 can find a matching channel 9, thereby ensuring the stability and uniformity of the brush head 3 during the extension and retraction process.
[0034] Furthermore, the length of the brush head 3 is less than the length of the sleeve 1. This design allows the brush head 3 to be completely or partially stored in the sleeve 1 when not in use, reducing the overall volume and length, making it easier to carry and store, preventing the brush head 3 from being contaminated or damaged when not in use, and enabling the cell brush to adapt to different sampling environments and needs, thus improving the ease of operation.
[0035] Furthermore, the length of the sampling part 4 is greater than the radius of the sleeve 1, and the sampling part 4 is constructed of an elastic material. This design allows the sampling part 4 to make better contact with the wall tissue for sampling after extending out of the sleeve 1. The elastic material of the sampling part can adapt to different sampling environments and tissue types, making it convenient for the sampling part 4 to move within the sleeve 1 and remain in a straight state.
[0036] Furthermore, the diameter of the limiting part 6 is larger than the diameter of the brush head 3, and the limiting part 6 is magnetically connected to the magnet 7. With this design, while facilitating the movement of the brush head 3 within the sleeve 1, the limiting part 6 can prevent the brush head 3 from detaching from the sleeve 1, thereby improving the stability and strength of the connection. Moreover, when the brush head 3 is stored in the sleeve 1, the magnet 7 can magnetically attract the limiting part 6, reducing the impact of the movement of the brush head 3 when the cell brush is removed.
[0037] Furthermore, the connector 2 is installed through the magnet 7, and the connector 2 and the brush head 3 are integrally designed. This design facilitates the movement of the connector 2 through the magnet 7, avoids interference with the installation of the magnet 7, and makes it convenient for personnel to operate and sample the brush head 3 from the end away from the sampling point.
[0038] Working principle: When using this utility model, firstly, because the cell brush has a sleeve 1 on its outer structure, and the brush head 3 can move inside the sleeve 1, the sleeve 1 first enters the vicinity of the sampling position during the sampling operation. Then, the connecting member 2 is pushed so that the connecting member 2 can push the brush head 3 out of the sleeve 1, and the sampling operation can be performed at the sampling position. Afterwards, the brush head 3 is put back into the sleeve 1 to reduce the scraping along the way and affect the sampling accuracy. When the brush head moves inside the sleeve, the sampling part 4 on the surface of the brush head 3 can move along the direction of the channel 9 through the cooperation of the base 8 and the channel 9. After the brush head 3 extends out of the sleeve 1, the connecting member 2 can control the rotation of the brush head 3 to facilitate sampling and avoid the inconvenience caused by the overall operation. After sampling, the sampling part 4 can also enter the sleeve from the channel 9 to reduce the scraping of cell samples on the surface of the sampling part 4.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A cell brush for facilitating sampling, characterized in that, include: The sleeve (1) is cylindrical and has a storage cavity (10) inside; The brush head (3) is connected to the inside of the sleeve (1). One end of the brush head (3) is fixed with a limiting part (6), and one end of the brush head (3) is connected with a connecting piece (2) that can penetrate the sleeve (1). A magnet (7) is fixed inside the sleeve (1); The surface of the brush head (3) is configured with a sampling component.
2. A cell brush for facilitating sampling according to claim 1, wherein, The sampling assembly includes: a probe (5), a base (8), and a sampling part (4); The probe (5) is installed at the other end of the brush head (3), the base (8) is constructed on the surface of the brush head (3), and the sampling part (4) is disposed on the surface of the base (8).
3. The cell brush of claim 1, wherein, The sleeve (1) and the brush head (3) are connected by a channel (9), the height of the channel (9) is greater than the height of the base (8), and the base (8) and the channel (9) correspond one-to-one.
4. The cell brush of claim 1, wherein, The length of the brush head (3) is less than the length of the sleeve (1).
5. The cell brush of claim 2, wherein, The length of the sampling part (4) is greater than the radius of the sleeve (1), and the sampling part (4) is constructed of an elastic material.
6. The cell brush of claim 1, wherein, The diameter of the limiting part (6) is larger than the diameter of the brush head (3), and the limiting part (6) is magnetically connected to the magnet (7).
7. The cell brush of claim 1, wherein, The connector (2) is disposed through the magnet (7), and the connector (2) and the brush head (3) are constructed as an integral unit.