Manual specimen sucking and flaking device

Abstract

The utility model discloses a manual specimen sucking and flaking device, which belongs to the field of cell and bacterium detection and comprises a membrane carrier, and a microporous filter membrane is arranged at the lower end of the membrane carrier. During specimen suction, the membrane carrier is hermetically connected with the sampling tube, and the sampling tube is communicated with the interior of the membrane carrier through the air hole; a vacuumizing mechanism is arranged in the sampling pipe, or the sampling pipe is connected with a vacuumizing device when a sample is sucked. The utility model aims to provide a manual specimen sucking and flaking device which can reduce the cost of cell and bacterium detection.

Description

Technical Field

[0001] This utility model relates to the field of cell and bacterial detection, specifically a manual specimen aspiration and slide preparation device. Background Technology

[0002] When using filter membranes (microporous membranes) as described in patents such as CN102580548B for cell and bacterial detection, the technical means described in patents such as CN106248978B are required to trap bacteria and cells. Subsequently, the microporous membrane is fixed onto a glass slide using the technical solution proposed in patents such as CN108760458B for subsequent operations such as microscopic examination. Therefore, under the existing technological framework, using microporous membranes for cell and bacterial detection not only results in high equipment costs but also imposes stringent requirements on the testing environment, leading to high detection costs. This, to some extent, limits the widespread adoption and application of microporous membrane technology. Utility Model Content

[0003] The purpose of this invention is to address the above problems by providing a manual specimen aspiration and slide preparation device that can reduce the cost of cell and bacterial detection.

[0004] To achieve the above objectives, the present invention adopts a manual specimen aspiration and slide preparation device, which includes a membrane carrier and a sampling tube. The lower end of the membrane carrier is provided with a microporous filter membrane. When aspirating a specimen, the membrane carrier and the sampling tube are sealed together, and the sampling tube is connected to the interior of the membrane carrier through pores. The sampling tube is provided with a vacuum mechanism or is connected to a vacuum device when aspirating a specimen.

[0005] Furthermore, to reduce reliance on other support equipment and facilitate use in less savvy locations such as outdoors, a vacuum mechanism is installed inside the sampling tube to extract the specimen. This vacuum mechanism includes a piston adapted to the inner wall of the sampling tube, and the piston is connected to a push rod. The specimen is extracted by pulling the piston.

[0006] Furthermore, the sampling tube is provided with a sampling section outside the pore, and the sampling section is provided with a flow channel communicating with the pore. In this way, the sampling tube and the sampling section are produced separately, reducing the difficulty of production, while ensuring that the required specimen can be intercepted through the microporous filter membrane.

[0007] Furthermore, to reduce assembly difficulty, a connecting part is provided on the outside of the vent of the sampling tube. The connecting part is nested and connected to the flow channel. The vent communicates with the flow channel through the through hole on the connecting part. In this way, the connection between the sampling tube and the sampling part can be completed simply by inserting the connecting part into the flow channel.

[0008] Furthermore, the lower end of the sampling unit is provided with a support for supporting the microporous filter membrane. The support is provided with channels at intervals. When the sample is extracted under negative pressure, the support presses against the microporous filter membrane, thereby preventing the microporous filter membrane from rupturing.

[0009] The beneficial effects of this invention are as follows: During specimen collection, only the microporous membrane needs to be placed in the specimen. Then, the air in the membrane carrier and sampling tube is extracted. Under negative pressure, the liquid in the specimen enters the sampling tube, while cells and bacteria in the specimen are intercepted by the microporous membrane, thus completing the sampling quickly and reducing the cost of cell and bacterial detection. This method separates sampling and detection. When needed, a large number of collection points can be quickly set up, and these collection points can complete bacterial collection and slide preparation with relatively simple operations. Then, the specimens are collected uniformly and tested, thereby establishing a long-term screening mechanism for infectious sources. This not only improves detection efficiency but also reduces detection costs. At the same time, centralized staining and slide reading facilitate statistical filing and ensures the quality of testing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the connection structure between the membrane carrier and the sampling tube.

[0011] Figure 2 This is a schematic diagram of the cross-sectional structure of the membrane carrier.

[0012] Figure 3 This is a schematic diagram of the cross-sectional structure of the sampling tube.

[0013] The text labels in the figure represent: 1. Membrane carrier; 2. Microporous filter membrane; 3. Sampling tube; 4. Pore; 5. Piston; 6. Push rod; 7. Sampling part; 8. Connecting part; 9. Support part. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0015] Example 1, such as Figure 1-3 As shown, the structure of this embodiment is: a manual specimen aspiration and slide preparation device, which includes a membrane carrier 1 and a sampling tube. The lower end of the membrane carrier 1 is provided with a microporous filter membrane 2, which can be the filter membrane described in patent number CN102580548A. In this embodiment, the membrane carrier 1 is a frustum structure with open upper and lower ends. The lower end of the membrane carrier 1 has a smaller diameter, and the sampling tube has open upper and lower ends.

[0016] The sampling tube 3 is connected to the interior of the membrane carrier 1 through the vent 4. In this embodiment, the sampling tube 3 has the vent 4 on one side of the membrane carrier 1. When aspirating a sample, the vent 4 is located inside the membrane carrier 1. The sampling tube 3 is equipped with a vacuum mechanism, or the sampling tube is connected to a vacuum device when aspirating a sample. In this embodiment, the air above the microporous filter membrane 2 is removed by setting a vacuum mechanism inside the sampling tube 3. The vacuum mechanism includes a piston 5 adapted to the inner wall of the sampling tube. The piston 5 fits tightly with the sampling tube 3. The sample is extracted by moving the piston. A sealing ring is provided on the edge of the piston to ensure the sealing during the sample extraction process. The piston 5 is connected to a push rod 6, which extends from the far end of the vent 4 into the sampling tube 3.

[0017] When collecting samples, the membrane carrier 1 and the sampling tube 3 are sealed together. This can be achieved by nesting the membrane carrier 1 and the sampling tube 3 together, with the sidewall of the membrane carrier 1 contacting the sidewall of the sampling tube 3 to achieve a seal. To improve the sealing effect, a sampling section 7 is provided outside the vent 4 of the sampling tube 3. The sampling section 7 is made of a soft rubber material such as silicone, or the outer wall of the sampling section 7 is covered with a soft rubber layer made of a soft rubber material such as silicone or rubber. The outer diameter of the sampling section 7 can be interference-fitted with the inner diameter of the membrane carrier 1. The sampling section 7 is provided with a flow channel communicating with the vent 4.

[0018] Since the sampling part 7 and the sampling tube 3 are made of two different materials, in order to facilitate production, a connecting part 8 is provided on the outside of the air hole 4 of the sampling tube 3. During assembly, the connecting part 8 is inserted into the flow channel, and the air hole 4 is connected to the flow channel through the through hole on the connecting part 8.

[0019] The sampling section 7 has a countersunk hole at its lower end to expand the sampling area. A support section 9 for supporting the microporous filter membrane 2 is provided inside the countersunk hole. Channels are provided on the support section 9 at intervals. The support section 9 can be made of porous ceramic or the like.

[0020] Slide Preparation Process: After collecting and inactivating the specimen, the sampling tube 3 and membrane carrier 1 are assembled together. Once assembled, the lower end of the support 9 presses against the upper end of the microporous filter membrane 2. The microporous filter membrane 2 is then submerged below the specimen liquid surface. The piston 5 is pulled upwards by the push rod 6, generating negative pressure that draws the liquid from the specimen into the sampling tube 3. At this point, cells and bacteria in the specimen are trapped on the microporous filter membrane 2, thus completing specimen aspiration. The microporous filter membrane 2 is then transferred onto a glass slide to complete slide preparation. Separating sampling and detection allows for the establishment of numerous collection points as needed. These collection points can be easily accessed for bacterial collection, establishing a long-term mechanism for investigating infectious sources. Unified collection and detection then improve detection efficiency and reduce costs.

[0021] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A manual specimen aspiration and slide preparation device, characterized in that, It includes a membrane carrier (1) and a sampling tube. The lower end of the membrane carrier (1) is provided with a microporous filter membrane (2). When a sample is drawn, the membrane carrier (1) is sealed to the sampling tube (3). The sampling tube (3) is connected to the inside of the membrane carrier (1) through a pore (4). The sampling tube (3) is provided with a vacuum mechanism or is connected to a vacuum device when a sample is drawn.

2. The manual specimen aspiration and slide preparation device according to claim 1, characterized in that, The vacuuming mechanism includes a piston (5) adapted to the inner wall of the sampling tube, and the piston (5) is connected to a push rod (6).

3. The manual specimen aspiration and slide preparation device according to claim 1, characterized in that, The sampling tube (3) has a sampling section (7) on the outside of the air hole (4), and the sampling section (7) has a flow channel communicating with the air hole (4).

4. The manual specimen aspiration and slide preparation device according to claim 3, characterized in that, A connecting part (8) is provided on the outside of the air hole (4) of the sampling tube (3). The connecting part (8) is nested and connected to the flow channel. The air hole (4) is connected to the flow channel through the through hole on the connecting part (8).

5. A manual specimen aspiration and slide preparation device according to claim 3, characterized in that, The sampling part (7) is provided with a support part (9) for supporting the microporous filter membrane (2) at its lower end, and channels are provided on the support part (9) at intervals.

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