Specimen suction head

Abstract

The utility model discloses a specimen suction head, which belongs to the field of medical detection and comprises a sampling part, a channel is arranged on the sampling part along the axial direction of the sampling part, two ends of the channel are open, and a circle of heating part is arranged on the outer side of the channel at one end of the sampling part. The utility model aims to provide a specimen suction head which can reduce the detection cost of a microfiltration membrane.

Description

Technical Field

[0001] This utility model relates to the field of medical testing, specifically a specimen aspiration head. 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 specimen aspiration head that can reduce the detection cost of microporous filter membranes.

[0004] To achieve the above objectives, the present invention employs a specimen aspiration head, comprising a sampling section with a channel arranged along its axial direction. The channel is open at both ends, and a heating element is arranged around one end of the sampling section outside the channel. One end of the sampling section is connected to a vacuum mechanism, and the other end is in contact with a microporous filter membrane. When the vacuum mechanism is working, the inactivated liquid or gaseous specimen passes through the microporous filter membrane. Cells and bacteria in the specimen are intercepted by the microporous filter membrane. Then, the heating element presses the microporous filter membrane onto a glass slide. The heating element, when activated, fixes the microporous filter membrane onto the glass slide, thereby quickly completing slide preparation and reducing the detection cost of using microporous filter membranes.

[0005] Furthermore, to increase the sampling area, the sampling part is provided with a countersunk hole at one end of the heating part. The countersunk hole is located inside the heating part, and one end of the channel is open at the bottom of the countersunk hole, thereby expanding the sampling area.

[0006] Furthermore, when the suction head is used with the microporous filter cup described in patents such as CN106248978B, a support portion is provided inside the sink hole to prevent the microporous filter membrane from breaking. The support portion is provided with through holes at intervals. When the specimen is extracted, the support portion holds the microporous filter membrane in place to prevent the microporous filter membrane from deforming excessively and breaking.

[0007] Furthermore, the sampling part is provided with a soft rubber part at the distal end of the heating part, and the soft rubber part is provided with a through hole communicating with the channel, so that the suction head can be quickly and tightly connected to the vacuum mechanism through the soft rubber part.

[0008] The beneficial effects of this invention are as follows: When the sample is drawn, one end of the heating part of the sampling unit is attached to the microporous filter membrane, and then the other end of the sampling unit is connected to the vacuum mechanism. When the vacuum mechanism is working, the inactivated sample (liquid or gas) passes through the microporous filter membrane, and the cells and bacteria in the sample are intercepted by the microporous filter membrane. Then, the heating part of the sampling unit is used to press and fix the microporous filter membrane onto the glass slide to quickly complete the slide preparation, thereby reducing the detection cost of using the microporous filter membrane. Attached Figure Description

[0009] Figure 1 This is a side view of the structure of this utility model.

[0010] The text labels in the figure represent: 1. Sampling section; 2. Channel; 3. Heating section; 4. Countersunk hole; 5. Support section; 6. Soft rubber section; 7. Through hole. Detailed Implementation

[0011] 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.

[0012] Example 1, as Figure 1 As shown, the structure of this embodiment is as follows: a specimen aspiration head, comprising a sampling part 1, a channel 2 arranged along its axial direction on the sampling part 1, the channel 2 being open at both ends, and a heating part 3 arranged around one end of the sampling part 1 outside the channel 2. When the heating part 3 is working, it can melt the microporous filter membrane. The heating part 3 can be an existing heating structure such as an electric heating wire. This embodiment uses an electric heating wire as an example. The electric heating wire is connected to an electric wire. The sampling part 1 is provided with a channel for the electric wire to pass through, and the electric wire passes through the sampling part and connects to a plug. A soft rubber part 6 is provided at the distal end of the sampling part 1 and the heating part 3. The soft rubber part 6 can be made of soft rubber materials such as silicone, rubber, or thermoplastic polyurethane elastomer. The soft rubber part 6 is also provided with a channel for the electric wire to pass through, and a through hole 7 communicating with the channel 2 is provided on the soft rubber part 6. In this embodiment, the through hole 7 is coaxially arranged with the channel 2.

[0013] Specific usage method: In this embodiment, the specimen aspiration head is used in conjunction with the microporous filter membrane cup described in patent publication number CN106248978B and the cup body described in patent publication number CN205981829U, or other microporous filter membrane carriers. During sampling, the sampling part 1 is inserted into the microporous filter membrane carrier. To increase the sampling area, the sampling part 1 has a recessed hole 4 at one end of the heating part 3. The recessed hole 4 is located inside the heating part 3, and the open end of the channel 2 is located at the bottom of the recessed hole 4. At the same time, since the microporous filter membrane is relatively thin, to avoid excessive deformation of the microporous filter membrane during vacuuming, a support part 5 is provided inside the recessed hole 4. The support part 5 has through holes spaced apart. The support part 5 presses against the upper end of the microporous filter membrane to prevent the microporous filter membrane from breaking due to deformation.

[0014] The sampling unit 1 is connected to the vacuum pumping end of the vacuum pumping mechanism via a connecting pipe, etc. In order to ensure the sealing of the connection, a soft rubber part 6 is provided at the far end of the heating part 3 of the sampling unit 1. A through hole 7 communicating with the channel 2 is provided on the soft rubber part 6. The through hole 7 and the connecting pipe are interference fit.

[0015] The microporous membrane is immersed in a gaseous or liquid specimen. A vacuum mechanism generates negative pressure, forcing the specimen through the membrane, where cells, bacteria, and other contaminants are trapped. After specimen aspiration, the operator places the microporous membrane on a slide or other support, then presses the heating element 3 flat onto the top of the membrane. With the operation of the heating element 3 and the pressure applied by the operator, the microporous membrane is fixed to the slide, thus completing the slide preparation.

[0016] 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.

[0017] 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 specimen aspiration head, characterized in that, It includes a sampling part (1), on which a channel (2) is provided along its axial direction. The two ends of the channel (2) are open, and a heating part (3) is provided on one end of the sampling part (1) outside the channel (2).

2. A specimen aspiration head according to claim 1, characterized in that, The sampling part (1) has a sinkhole (4) at one end of the heating part (3). The sinkhole (4) is located inside the heating part (3), and the opening of one end of the channel (2) is located at the bottom of the sinkhole (4).

3. A specimen aspiration head according to claim 2, characterized in that, A support portion (5) is provided inside the countersunk hole (4), and through holes are provided at intervals on the support portion (5).

4. A specimen aspiration head according to claim 1, characterized in that, The sampling part (1) is provided with a soft rubber part (6) at the far end of the heating part (3), and the soft rubber part (6) is provided with a through hole (7) communicating with the channel (2).

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