Pre-packaged food multiple microorganism detection closed reaction device

Abstract

The utility model relates to microorganism safety detection technical field, concretely for prefabricated dish multiple microorganism detection closed reaction device, include: box and box lid, be equipped with the holding structure for accommodating multiple sampling test tube in the box, and the culture medium is preset in the sampling test tube, and the orifice is sealed through the sealing membrane and is provided with the test tube cover, and the test tube cover concentricity is provided with the rubber column for puncture sample adding and the gas exchange membrane for gas exchange, the utility model discloses, through the cooperation of the clamping structure and the bonding assembly, the sampling result's unforgeable is guaranteed, and the puncture sample adding is combined, and the risk of sample pollution is eliminated, the device shell cooperation holding structure and positioning structure effectively protect sampling test tube, reduce the use of external packaging, reduce the cost and unpacking risk, through the pre -treatment step preposition to sampling field, with concentric test tube cover and multiple test tube parallel design, the parallel culture of multiple target microorganisms in single sample in the transportation, the detection period is shortened significantly.

Description

Technical Field

[0001] This utility model relates to the field of microbial safety detection technology, specifically a closed reaction device for multiple microbial detection of pre-prepared dishes. Background Technology

[0002] The prepared food industry has developed rapidly in recent years, but its food safety issues, especially microbial contamination, have remained a focus of public and regulatory attention. Establishing a reliable and efficient quality control system is crucial for the healthy development of the industry. Currently, the microbial testing process for prepared food products suffers from the following technical deficiencies: First, the existing process relies on laboratory-based sample pretreatment. The unpacking, weighing, dilution, homogenization, and dispensing of samples into various culture media take up a lot of time, resulting in a long testing cycle.

[0003] Secondly, the sample packaging is not specifically designed for submission. During mailing, it is easily damaged by compression and impact, leading to leakage and contamination. This necessitates the use of excessive external cushioning material, resulting in over-packaging. Over-packaging not only increases costs but also makes it easy for laboratory personnel to break the sample packaging due to improper handling during unpacking, thus causing sample contamination. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a closed reaction device for multiple microbial detection in pre-cooked dishes.

[0005] The technical solution of this utility model is: A closed reaction device for multiple microbial detection of pre-cooked food includes: The box body and the box lid are initially fixed together by a snap-fit ​​structure. An adhesive component is also provided between the box body and the box lid for bonding and fixing the box body and the box lid after sampling is completed. The box is equipped with a holding structure for accommodating multiple sampling tubes. The sampling tubes are pre-filled with culture medium, and the tube openings are sealed by a sealing membrane and equipped with tube caps. The tube caps are concentrically equipped with rubber columns for puncture and sample addition and gas exchange membranes for gas exchange. The inner side of the box lid is provided with a positioning structure corresponding to the sampling tube, which is used to fix the sampling tube.

[0006] Preferably, the top edge of the box body is provided with an interlocking skirt, which is used to interlock with the snap-fit ​​structure, and the adhesive component is adhered to the top surface of the interlocking skirt.

[0007] Preferably, the adhesive component uses foamed double-sided adhesive, one side of which is bonded to the interlocking skirt, and the other side is covered with release paper. The release paper is torn off after sampling to expose the adhesive component and generate adhesiveness.

[0008] Preferably, a pre-cut notch is provided at the edge of the top surface of the lid, the pre-cut notch being used to destructively open the lid during testing.

[0009] Preferably, the positioning structure includes a positioning sleeve, the test tube cap is inserted into the positioning sleeve, and the top surface of the positioning sleeve is provided with a plurality of vent holes, the diameter of which is 1-2 mm.

[0010] Preferably, the top surface of the lid is covered with a removable dustproof film, which is used to seal the vent holes.

[0011] Preferably, the test tube cap has a sample dispensing tube at the center of the top, the rubber column is fixedly disposed at the center of the sample dispensing tube, a plurality of ventilation holes are evenly distributed on the outer side of the top of the sample dispensing tube, and the ventilation membrane covers the ventilation holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention, through the combination of snap-fit ​​structure and adhesive components, ensures the immutability of sampling results and eliminates the risk of sample contamination when combined with puncture sampling. The outer shell of the device, along with the retaining and positioning structures, effectively protects the sampling tubes, reduces the use of external packaging, and lowers costs and the risk of unpacking. By moving the pretreatment step to the sampling site, and with the concentric tube cap and multi-tube parallel design, the parallel culture of multiple target microorganisms in a single sample during transportation significantly shortens the detection cycle. Attached Figure Description

[0013] Figure 1 This is a first schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a cross-sectional view of the overall structure of this utility model; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is an exploded view of the sampling test tube structure in this utility model; Figure 6 This is a cross-sectional view of the sampling test tube in this utility model.

[0014] The meanings of the labels in the diagram are as follows: 1. Box body; 2. Interlocking skirt; 3. Box lid; 4. Snap-fit ​​structure; 5. Adhesive assembly; 6. Pre-cut end; 7. Positioning sleeve; 8. Vent hole; 9. Dustproof membrane; 10. Retaining structure; 11. Sampling tube; 12. Culture medium; 13. Sealing membrane; 14. Test tube cap; 15. Sample dispensing tube; 16. Rubber column; 17. Ventilation hole; 18. Ventilation membrane. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please see Figure 1-6 The present invention will describe the above technical solution in detail through the following embodiments: A closed reaction device for multiple microbial detection of pre-cooked food includes: The box body 1 and the box cover 3 are initially fixed to the box body 1 by a snap-fit ​​structure 4. An adhesive component 5 is also provided between the box body 1 and the box cover 3 for bonding and fixing the box body 1 and the box cover 3 after sampling is completed.

[0017] Both the box body 1 and the box lid 3 are made of plastic material with a certain strength. ABS engineering plastic is preferred.

[0018] The snap-fit ​​structure 4 is initially fixed, which makes it easy to open the box cover 3 at the sampling site.

[0019] The adhesive component 5 bonds the box body 1 and the box cover 3, which can prevent the box body 1 and the box cover 3 from being opened a second time.

[0020] The box 1 is equipped with a holding structure 10 for accommodating multiple sampling tubes 11. The sampling tubes 11 are pre-filled with culture medium 12. The tube opening is sealed by a sealing membrane 13 and equipped with a tube cap 14. The tube cap 14 is concentrically equipped with a rubber column 16 for puncture and sample addition and a gas exchange membrane 18 for gas exchange.

[0021] The retaining structure 10 can be made of rigid foam material or high-density sponge to hold the sampling tube 11 in place and isolate it from vibration.

[0022] Sampling tube 11 should preferably be made of transparent polypropylene.

[0023] The sealing membrane 13 is preferably made of aluminum-plastic composite film and is combined with the sampling tube 11 using a hot pressing process.

[0024] Culture medium 12 preferably uses lyophilized culture medium, which can be restored to its function after being exposed to water.

[0025] The number of sampling tubes 11 is 4-6, and in this embodiment it is set to 6. Each sampling tube 11 contains a different type of culture medium 12, which is used for the directional culture of different target bacterial species.

[0026] The inner side of the lid 3 is provided with a positioning structure corresponding to the sampling tube 11, which is used to fix the sampling tube 11.

[0027] The rubber column 16 is made of a medical polymer material with good elasticity and strong self-healing properties, preferably brominated butyl rubber.

[0028] The ventilation membrane 18 is a hydrophobic microporous filter membrane with a pore size smaller than that of microorganisms, allowing gas to pass through but blocking liquids and microorganisms, preferably an expanded polytetrafluoroethylene membrane.

[0029] The top edge of the box body 1 is provided with an interlocking skirt 2, which is used to interlock with the snap-fit ​​structure 4, and the adhesive component 5 is adhered to the top surface of the interlocking skirt 2.

[0030] The interlocking skirt 2 is integrally formed with the box body 1, and after being snapped into the snap-fit ​​structure 4, it is used for the initial fixation of the box lid 3.

[0031] The adhesive component 5 uses foamed double-sided adhesive, one side of which is bonded to the interlocking skirt 2, and the other side is covered with release paper. The release paper is torn off after sampling to expose the adhesive component 5 and generate adhesiveness.

[0032] The foamed double-sided tape has high adhesion. After being bonded to the lid 3, the foamed double-sided tape will be damaged when it is opened again. The testers can judge whether the sample is at risk of being tampered with by the integrity of the bonding component 5.

[0033] The top edge of the lid 3 is provided with a pre-cut notch 6, which is used to destructively open the lid 3 during testing.

[0034] After receiving the device, the testing personnel can use scissors or other knives to open the cover 3 through the pre-cut opening 6. Then, they can remove the sampling tube 11 inside. The pre-cut opening 6 can be a groove or a series of elongated through-holes. In this embodiment, it is an elongated through-hole.

[0035] The positioning structure includes a positioning sleeve 7, a test tube cap 14 inserted into the positioning sleeve 7, and a number of vent holes 8 through the top surface of the positioning sleeve 7, the diameter of the vent holes 8 being 1-2mm.

[0036] The positioning sleeve 7 is used to lock the test tube cap 14 from above, which can restrict the axial movement of the sampling test tube 11 and the test tube cap 14.

[0037] Ventilation hole 8 is used for air exchange inside and outside the device. Its diameter is controlled at 1-2mm to prevent accidental insertion of external hard objects.

[0038] The top surface of the lid 3 is covered with a removable dustproof film 9, which is used to seal the vent 8.

[0039] The dustproof film 9 is used to seal the vent 8 in the factory condition. It needs to be removed after sampling and closing the box lid 3.

[0040] The test tube cap 14 has a sample tube 15 at the top center, a rubber column 16 is fixed at the center of the sample tube 15, and a number of ventilation holes 17 are evenly distributed on the outer side of the top of the sample tube 15. A ventilation membrane 18 covers the ventilation holes 17.

[0041] The rubber column 16 and the sample tube 15 are fitted with an interference fit and bonded using a biocompatible adhesive to ensure fixation strength.

[0042] It should be noted that a space of 2-3 mm should be reserved between the bottom surface of the sample tube 15 and the top surface of the sealing film 13.

[0043] During sample addition, a portion of the homogenized sample can be drawn using an injectable syringe. The syringe is equipped with a flat-tipped needle, which is used to puncture the rubber column 16 and the sealing membrane 13 for sample addition. After removal, the rubber column 16, relying on its elasticity and self-healing properties, seals the puncture site. The puncture site on the sealing membrane 13 is used for gas exchange during sample culture.

[0044] Working principle: Under third-party supervision, samples of pre-prepared dishes that need to be sampled are extracted from the production line.

[0045] The samples were sampled, homogenized, and diluted.

[0046] Remove the lid 3 and take out the sampling tube 11.

[0047] A portion of the homogenized sample is drawn using an injection, and the sample is added by piercing the rubber column 16 and the sealing membrane 13 with a flat-tipped injection needle. After being pulled out, the rubber column 16 seals the puncture hole due to its own elasticity and self-healing properties.

[0048] Insert the sample tube 11 after adding the sample back into the retaining structure 10 inside the box 1.

[0049] Before inserting the sampling tube 11, a label can be affixed to the tube wall, indicating the sampling time, sample name, and other information. The label can be pre-attached before leaving the factory and labeled with the culture medium material 12.

[0050] After sampling is completed, peel off the release paper on the surface of the adhesive component 5 and the dustproof film 9 on the top surface of the box cover 3. Then, put the box cover 3 back in place and press the box cover 3 to make the box cover 3 stick tightly to the adhesive component 5.

[0051] At this point, it is impossible to open the lid 3 without damaging the physical structure.

[0052] During transportation, the freeze-dried culture medium 12 that comes into contact with the sample restores its original function, thereby enabling targeted culture of bacteria within the sample.

[0053] The carbon dioxide produced during cultivation, as well as the required oxygen, can be exchanged through the puncture holes on the sealing membrane 13, the ventilation membrane 18, and the venting holes 8.

[0054] When inspectors receive the device, they can determine whether the sample has been switched or contaminated by checking the integrity of the lid 3, snap-fit ​​structure 4, adhesive component 5, and pre-break 6.

[0055] Assuming the sample is free of contamination, the lid 3 is destructively opened through the pre-cut opening 6, and the sampling tube 11 is removed. The decision to continue culturing or proceed directly to testing is based on the sample's culture progress.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A closed reaction device for multiple microbial detection of pre-cooked dishes, characterized in that, include: The box body (1) and the box cover (3) are initially fixed to the box body (1) by a snap-fit ​​structure (4). An adhesive component (5) is also provided between the box body (1) and the box cover (3) for bonding and fixing the box body (1) and the box cover (3) after sampling is completed. The box (1) is provided with a holding structure (10) for accommodating multiple sampling tubes (11). The sampling tubes (11) are pre-filled with culture medium (12), and the tube openings are sealed by a sealing membrane (13) and equipped with tube caps (14). The tube caps (14) are concentrically provided with rubber columns (16) for puncture and sample addition and gas exchange membranes (18) for gas exchange. The inner side of the box cover (3) is provided with a positioning structure corresponding to the sampling tube (11) for fixing the sampling tube (11).

2. The pre-prepared food multiple microbial detection closed reaction device as described in claim 1, characterized in that: The top edge of the box body (1) is provided with an interlocking skirt (2), which is used to interlock with the snap-fit ​​structure (4), and the adhesive component (5) is bonded to the top surface of the interlocking skirt (2).

3. The pre-prepared food multiple microbial detection closed reaction device as described in claim 2, characterized in that: The adhesive component (5) is made of foamed double-sided adhesive, one side of which is bonded to the interlocking skirt (2), and the other side is covered with release paper. The release paper is torn off after sampling to expose the adhesive component (5) and generate adhesiveness.

4. The pre-prepared food multiple microbial detection closed reaction device as described in claim 1, characterized in that: The lid (3) has a pre-cut (6) at the top edge, which is used to destructively open the lid (3) during testing.

5. The pre-prepared food multiple microbial detection closed reaction device as described in claim 1, characterized in that: The positioning structure includes a positioning sleeve (7), the test tube cap (14) is inserted into the positioning sleeve (7), and the top surface of the positioning sleeve (7) is provided with a plurality of vent holes (8), the diameter of which is 1-2 mm.

6. The pre-prepared food multiple microbial detection closed reaction device as described in claim 5, characterized in that: The top surface of the lid (3) is covered with a removable dustproof film (9), which is used to seal the vent (8).

7. The pre-prepared food multiple microbial detection closed reaction device as described in claim 1, characterized in that: The test tube cap (14) has a sample tube (15) at the top center. The rubber column (16) is fixed at the center of the sample tube (15). Several ventilation holes (17) are evenly provided on the outer side of the top of the sample tube (15). The ventilation membrane (18) covers the ventilation holes (17).

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