CN114634853A - Nucleic acid detection reagent device - Google Patents
Nucleic acid detection reagent device Download PDFInfo
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- CN114634853A CN114634853A CN202210244666.6A CN202210244666A CN114634853A CN 114634853 A CN114634853 A CN 114634853A CN 202210244666 A CN202210244666 A CN 202210244666A CN 114634853 A CN114634853 A CN 114634853A
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- nucleic acid
- reagent
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- box base
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- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 118
- 150000007523 nucleic acids Chemical class 0.000 title claims abstract description 75
- 102000039446 nucleic acids Human genes 0.000 title claims abstract description 75
- 108020004707 nucleic acids Proteins 0.000 title claims abstract description 75
- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 164
- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 49
- 239000011324 bead Substances 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 239000011888 foil Substances 0.000 claims description 15
- 239000000376 reactant Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 230000003321 amplification Effects 0.000 abstract description 10
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 10
- 238000012864 cross contamination Methods 0.000 abstract description 8
- 238000000605 extraction Methods 0.000 abstract description 7
- 238000012546 transfer Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 10
- 238000003752 polymerase chain reaction Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000009089 cytolysis Effects 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000004023 plastic welding Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6806—Preparing nucleic acids for analysis, e.g. for polymerase chain reaction [PCR] assay
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
- C12N15/1003—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor
- C12N15/1006—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor by means of a solid support carrier, e.g. particles, polymers
- C12N15/1013—Extracting or separating nucleic acids from biological samples, e.g. pure separation or isolation methods; Conditions, buffers or apparatuses therefor by means of a solid support carrier, e.g. particles, polymers by using magnetic beads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The present application relates to a nucleic acid detection reagent device. The nucleic acid detection reagent device includes: the reagent box comprises an upper seat and a reagent box base, wherein the upper seat and the reagent box base are arranged at intervals, the upper seat and the reagent box base are in sealed connection through a sealing structure, and a sealing cavity is formed between the upper seat and the reagent box base; the upper seat is provided with a metal rod, the metal rod is arranged in the sealed cavity and is used for being magnetically connected with a magnet outside the sealed cavity; the reagent box base is provided with a plurality of holding cavities, at least one of which is used for holding magnetic beads, and a plurality of holding cavities can be respectively communicated with the sealing cavity. The application provides a nucleic acid detection reagent device, extract nucleic acid, reagent, correspond function container, amplification reaction etc. and integrate in a confined space, can effectively avoid the cross contamination problem of in-process such as nucleic acid extraction, transfer, amplification reaction, can effectively promote nucleic acid detection's detection efficiency.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a nucleic acid detection reagent device.
Background
The magnetic bead method nucleic acid extraction kit plays an important role in the nucleic acid detection process and is one of indispensable tools in the nucleic acid extraction and detection processes. The magnetic bead is a special nano-micron material, the size of the magnetic bead is usually between a few tenths of microns and several microns, the magnetic bead can rapidly move to one side in a magnetic field and gather together, and the magnetic bead can rapidly recover to a dispersion state after the magnetic field is removed. The traditional nucleic acid analysis has the defects of long time consumption, large equipment volume, need of special experimental environment and personnel and the like, and because of the ultrahigh sensitivity of nucleic acid amplification, the nucleic acid amplification is carried out in the open environment of a common laboratory, and aerosol cross contamination of a sample easily causes false positive of nucleic acid detection of a subsequent sample. The existing nucleic acid detection box is difficult to combine the whole nucleic acid extraction and nucleic acid detection processes into the same closed space, so that aerosol cross contamination of a sample caused by the need of separating the whole nucleic acid extraction and nucleic acid detection processes in the nucleic acid detection process is easy to cause false positive of nucleic acid detection of a subsequent sample, and the detection efficiency is low.
Disclosure of Invention
For solving or partly solve the problem that exists among the correlation technique, this application provides a nucleic acid detect reagent device, has better sealing performance, can prevent cross contamination, and is small, can be used to realize that nucleic acid analysis is automatic, can effectively promote nucleic acid detect's detection efficiency.
The present application provides a nucleic acid detecting reagent device comprising: the reagent box comprises an upper seat and a reagent box base, wherein the upper seat and the reagent box base are arranged at intervals, the upper seat and the reagent box base are in sealed connection through a sealing structure, and a sealing cavity is formed between the upper seat and the reagent box base;
the upper seat is provided with a metal rod, the metal rod is arranged in the sealing cavity and is used for being magnetically connected with a magnet outside the sealing cavity;
the reagent box base is provided with a plurality of holding cavities, at least one holding cavity is used for holding magnetic beads, the holding cavities can be communicated with the sealing cavity respectively, and the metal rod is used for transferring the magnetic beads among the holding cavities.
In one embodiment, the upper seat and the metal rod are of an integrally formed structure, and the metal rod extends from the upper seat towards a direction close to one side of the reagent box base.
In one embodiment, the plurality of accommodating cavities are respectively provided with an opening facing the sealing cavity, and the openings of the plurality of accommodating cavities are provided with sealing films used for packaging the plurality of accommodating cavities.
In one embodiment, the metal bar comprises a base part and an end part, the base part is connected with the upper seat, the end part is far away from the base part, and the base part is provided with a groove; and/or
The end part is provided with a puncturing part for puncturing the sealing film.
In one embodiment, the sealing structure includes a sealing ring disposed between the upper seat and the reagent cartridge base, and the sealing ring is respectively connected to the upper seat and the reagent cartridge base in a sealing manner.
In one embodiment, the sealing structure comprises a sealing film arranged between the upper seat and the sealing retainer ring, the upper seat and the sealing retainer ring are arranged at intervals, and the sealing film is respectively connected with the upper seat and the sealing retainer ring in a sealing manner and forms the sealing cavity.
In one embodiment, the sealing structure comprises a sealing ring arranged between the sealing retainer ring and the reagent box base, the sealing retainer ring and/or the reagent box base are respectively provided with a sealing groove, and the sealing ring is arranged in the sealing groove and is in contact with the sealing retainer ring and the reagent box base;
the sealing retainer ring and the kit base are respectively provided with connecting surfaces which are mutually contacted and used for forming a sealing state.
In one embodiment, the accommodating cavities are formed in the top of the reagent box base, the top of the reagent box base is the side of the reagent box base facing the upper seat, at least one sample injection port communicated with the accommodating cavities is formed in the side face of the reagent box base, and a second sealing member is movably arranged at the sample injection port and used for sealing the sample injection port.
In one embodiment, the nucleic acid detection reagent device comprises a non-return part arranged in the sample addition port, the non-return part comprises a non-return valve arranged in the sample addition port, the non-return valve is abutted against the wall of the sample addition port, and the non-return valve is provided with a liquid inlet and outlet channel for a pipette tip to pass through.
In one embodiment, the nucleic acid detection reagent device comprises a pre-buried pipe for accommodating reactants;
the embedded pipe comprises a cylinder body and aluminum foil films arranged at two ends of the cylinder body, and the aluminum foil films are used for sealing two ends of the cylinder body;
and a step structure is formed on the wall of at least one accommodating cavity, one end of the embedded pipe is matched and connected with the step structure, and the step structure is sealed through the aluminum foil film.
The technical scheme provided by the application can comprise the following beneficial efficiencies:
the application provides a nucleic acid detect reagent device, through seal structure sealing connection between upper seat and the reagent box base, and be formed with sealed chamber between upper seat and reagent box base, sealed intracavity is located to the metal rod of upper seat, through being connected the metal rod and the outside magnet magnetism in sealed chamber, make the metal rod have magnetism, make the metal rod can shift between a plurality of chambeies that hold of magnetic bead on the reagent box base, so, the sealed environment of nucleic acid detect reagent device has been guaranteed, reduce sample cross contamination's risk, can effectively promote nucleic acid detect's detection efficiency.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
FIG. 1 is a schematic view showing the overall structure of a nucleic acid detecting reagent apparatus according to an embodiment of the present application;
FIG. 2 is a schematic diagram showing an exploded structure of a nucleic acid detecting reagent apparatus according to an embodiment of the present application;
FIG. 3 is a schematic view showing an exploded structure of a nucleic acid detecting reagent apparatus according to another embodiment of the present application;
FIG. 4 is a schematic view showing the structure of a metal rod of a nucleic acid detecting reagent apparatus according to another embodiment of the present application;
FIG. 5 is a schematic structural view of an upper stage of a nucleic acid detecting reagent apparatus according to an embodiment of the present application;
FIG. 6 is a schematic structural view of a cassette base of a nucleic acid detecting reagent apparatus according to an embodiment of the present application;
FIG. 7 is a schematic view showing the structure of a cassette holder of a nucleic acid detecting reagent apparatus according to another embodiment of the present application;
FIG. 8 is a schematic structural view of an upper seat and a kit base of the nucleic acid detecting reagent apparatus according to an embodiment of the present application after assembly;
FIG. 9 is a schematic structural view of a buried pipe of a nucleic acid detecting reagent apparatus according to an embodiment of the present application.
Reference numerals:
100. an upper seat; 110. a metal rod; 111. a puncture section; 1101. a placement chamber; 1102. a trench; 120. positioning the surface; 102. a clamping hole; 130. a first seal member; 103. sealing the detection hole; 104. a clamp positioning guide groove; 105. a manipulator clamping groove; 200. a reagent cartridge base; 201. an accommodating chamber; 202. a sample addition port; 203. a storage hole; 210. sealing the film; 220. a second seal member; 230. a step structure; 301. sealing the cavity; 401. a sealing surface; 410. a sealing retainer ring; 402. a sealing groove; 420. a sealing film; 403. a connecting surface; 430. a seal ring; 510. a guide ring; 600. a pipette tip; 700. a check valve; 800. a limiting ring; 900. pre-burying a pipe; 910. a barrel; 920. an aluminum foil film.
Detailed Description
Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the system or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore, should not be considered as limiting.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the related art, the sealing performance of the magnetic bead method nucleic acid detection reagent device is poor, so that the detection efficiency of an experimenter when the magnetic bead method nucleic acid detection reagent device is used for detecting nucleic acid is poor. In order to solve or partially solve the problem that exists among the correlation technique, this application provides a nucleic acid detect reagent device, has better sealing performance, can effectively promote nucleic acid detect's detection efficiency.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 3 together, the nucleic acid detecting reagent apparatus of the present embodiment includes: the reagent kit comprises an upper seat 100 and a reagent kit base 200, wherein the upper seat 100 and the reagent kit base 200 are arranged at intervals, the upper seat 100 and the reagent kit base 200 are hermetically connected through a sealing structure, and a sealing cavity 301 is formed between the upper seat 100 and the reagent kit base 200; the upper seat 100 is provided with a metal rod 110, the metal rod 110 is arranged in the sealed cavity 301, and the metal rod 110 is used for being magnetically connected with a magnet outside the sealed cavity 301; the reagent box base 200 is provided with a plurality of holding cavities 201, at least one holding cavity 201 is used for holding magnetic beads, the plurality of holding cavities 201 can be respectively communicated with the sealing cavity 301, and the metal rod is used for transferring the magnetic beads among the plurality of holding cavities 201.
It can be seen from this embodiment that, the upper seat 100 is connected with the reagent cartridge base 200 in a sealing manner through the sealing structure, the sealing cavity 301 is formed between the upper seat 100 and the reagent cartridge base 200, the metal rod 110 on the upper seat 100 is disposed in the sealing cavity 301, and the metal rod 110 is magnetically connected with the magnet outside the sealing cavity 301, so that the metal rod 110 has magnetism, and the metal rod 110 can transfer magnetic beads between the plurality of accommodating cavities 201 on the reagent cartridge base 200, thereby ensuring the sealing environment of the nucleic acid detection reagent device, reducing the risk of sample contamination, and effectively improving the detection efficiency of nucleic acid detection. The traditional nucleic acid analysis has the defects of long time consumption, large equipment volume, need of special experimental environment and personnel and the like, and because of the ultrahigh sensitivity of nucleic acid amplification, the nucleic acid amplification is carried out in the open environment of a common laboratory, and aerosol cross contamination of a sample easily causes false positive of nucleic acid detection of a subsequent sample. The nucleic acid detection reagent device can perform processes such as nucleic acid extraction and amplification without cross contamination in a fully-closed container, can perform processes such as nucleic acid extraction and amplification reaction in a fully-closed space, has better sealing performance, can prevent cross contamination, is small in size, and can be used for realizing automation of nucleic acid analysis.
It should be noted that, the plurality of accommodating cavities 201 may include a lysis cavity, a cleaning cavity, a magnetic bead or magnetic bead liquid storage cavity, and a PCR (polymerase chain reaction) reaction cavity, wherein the PCR reaction cavity may be disposed on an independent PCR tube, and then the PCR tube is hermetically connected to the kit base 200, and the PCR reaction cavity and the other accommodating cavities 201 may also be formed by forming modes such as punch forming, die-casting forming, etc. on the kit base 200. In some embodiments, the PCR reaction tube has a thickness of 0.1mm to 1.5mm, and specifically may be 0.4mm, 0.8mm, 1.0mm or 1.5mm, and has a light transmittance of 60% or more, so as to pass through optical detection.
In some embodiments, the plurality of accommodating cavities 201 are respectively provided with an opening facing the sealing cavity 301, in order to ensure the sealing efficiency of the plurality of accommodating cavities 201, the sealing films 210 are arranged at the openings of the plurality of accommodating cavities 201, and the sealing films 210 are used for encapsulating the plurality of accommodating cavities 201, it should be noted that the plurality of accommodating cavities 201 may be encapsulated by using one whole sealing film 210, or the plurality of sealing films 210 may be used for respectively encapsulating the plurality of accommodating cavities 201. Preferably, the sealing film 210 is an aluminum foil film.
In some embodiments, the shape of the sealing film 210 corresponds to the arrangement shape of the openings of the plurality of accommodating chambers 201, preferably, the openings of the plurality of accommodating chambers 201 are arranged on the reagent kit base 200 along a U-shaped structure, and the shape of the sealing film 210 corresponds to the U shape.
In some embodiments, the amount of magnetism conducted by the metal rod 110 is varied by adjusting the distance between the magnet outside the sealed cavity 301 and the metal rod 110. Illustratively, the magnetic beads can be adsorbed by the metal rod 110 by making the magnet close to the metal rod 110 so that the magnetism of the metal rod 110 is enhanced, and the magnetic beads adsorbed by the metal rod 110 can be dropped by making the magnet far from the metal rod 110 so that the magnetism of the metal rod 110 is weakened, so that the magnetic beads can be transferred among the plurality of accommodating cavities 201.
In some embodiments, in order to ensure the sealing efficiency of the upper seat 100 and reduce the production processes of the upper seat 100, the upper seat 100 and the metal rod 110 are integrally formed, and the metal rod 110 is inserted into the upper seat 100 during the injection molding production, so that the metal rod 110 is embedded into the upper seat 110 and integrally formed with the upper seat 110. The metal bar 110 extends from the upper seat 100 toward a side close to the reagent vessel base 200 so as to be close to the accommodation chamber 201 on the reagent vessel base 200.
Referring to fig. 4, in some embodiments, the metal rod 110 includes a base connected to the upper base 100 and an end away from the base, in order to enable the metal rod 110 to adsorb and transfer magnetic beads in the accommodating chamber 201, the end of the metal rod 110 is provided with a puncturing portion 111 for puncturing the sealing film 210, so that the accommodating chamber 201 can communicate with the sealing chamber 301, so that the metal rod 110 can adsorb and transfer magnetic beads in the accommodating chamber 201. In some embodiments, the base portion is provided with a groove 1102, so that the base portion of the metal rod 110 can be embedded into the upper injection molding part more firmly, and the metal rod 110 can not loosen and generate air leakage when penetrating the sealing film 210.
Referring to fig. 5 and 6, in some embodiments, in order to make the upper base 100 meet the requirement of industrial production, the fixture can accurately clamp the upper base 100, and the upper base 100 is provided with an arc-shaped positioning surface 120 for positioning the movement of the fixture. In order to facilitate the clamp to stably clamp the upper seat 100, the upper seat 100 is provided with clamping holes 102, and preferably, the opposite sides of the upper seat 100 are respectively provided with the clamping holes 102 to improve the clamping stability of the clamp. In other embodiments, the upper housing 100 is provided with a clamp positioning guide groove 104 and a robot clamping groove 105, the clamp positioning guide groove 104 is disposed adjacent to the robot clamping groove 105, and the clamp positioning guide groove 104 has a wedge-shaped guide surface so as to guide a clamp along the guide surface to the robot clamping groove 105, thereby clamping the upper housing 100. Preferably, the jig positioning guide groove 104 and the robot clamping groove 105 are annular structures so that the jig can clamp the upper seat 100 from any angle.
In some embodiments, in order to ensure the sealing quality of the upper seat 100 and/or the assembly formed by assembling the upper seat 100 with other components, it is necessary to perform sealing detection on the upper seat 100 and/or the assembly formed by assembling the upper seat 100 with other components, the upper seat 100 is provided with a sealing detection hole 103 and a first sealing member 130, the sealing detection hole 103 is communicated with the sealing cavity 301, and the first sealing member 130 is movably connected with the sealing detection hole 103 and is used for sealing the sealing detection hole 103. In this embodiment, the sealed detection hole 103 may also be referred to as a leak hole, and the first sealing member 130 may be a sealing plug.
In some embodiments, the sealing structure includes a gasket 410 disposed between the upper housing 100 and the cassette base 200, and the gasket 410 is sealingly coupled to the upper housing 100 and the cassette base 200, respectively. Thus, by providing the sealing retainer 410 between the upper seat 100 and the reagent cartridge base 200, the sealing retainer 410 can respectively connect the upper seat 100 with the reagent cartridge base 200, which have a large difference in shape and structure, in a sealing manner, thereby ensuring the sealing quality between the upper seat 100 and the reagent cartridge base 200.
In some embodiments, the sealing structure includes a sealing diaphragm 420 disposed between the upper seat 100 and the gasket 410, the upper seat 100 is spaced apart from the gasket 410, and the sealing diaphragm 420 is sealingly coupled to the upper seat 100 and the gasket 410, respectively, and forms the sealing cavity 301. In this embodiment, the sealing film 420 may be PP (polypropylene), PE (polyethylene), or a PP/PE composite film, and the sealing between the sealing film 420 and the upper seat 100 and the sealing between the sealing film 420 and the sealing ring 410 may be achieved by a heat sealing process. In some embodiments, in order to ensure the sealing efficiency between the sealing film 420 and the upper seat 100 and between the sealing film 420 and the gasket 410, the upper seat 100 and the gasket 410 respectively have a sealing surface 401 with a circular arc shape, so that the sealing film 420 can be well spread on the sealing surface 401 to perform the heat sealing operation, thereby ensuring the sealing efficiency between the sealing film 420 and the upper seat 100 and between the sealing film 420 and the gasket 410. After the seal between the seal membrane 420 and the upper seat 100, and between the seal membrane 420 and the gasket 410, is completed, a seal cavity 301 can be formed between the gasket 410 and the upper seat 100.
In some embodiments, the sealing structure comprises a sealing ring 430 disposed between the sealing ring 410 and the reagent cartridge base 200, the sealing ring 410 and/or the reagent cartridge base 200 are respectively provided with a sealing groove 402, and the sealing ring 430 is disposed in the sealing groove 402 and contacts with the sealing ring 410 and the reagent cartridge base 200; the gasket 410 and the cassette holder 200 have respective connection surfaces 403 that contact each other and form a sealed state. In this embodiment, the sealing retainer ring 410 and the kit base 200 may be welded together by a plastic welding process, and in the plastic welding process, the sealing ring 430 in the sealing groove 402 is heated to deform and fill the sealing groove 402, so as to seal the single sealing ring and the kit base 200. In this embodiment, the sealing groove 402 may be disposed around the edge of the sealing ring 410 and/or the cartridge base 200, the connecting surface 403 may also be referred to as a welding surface, and the welding surface may be disposed on a plane opposite to the sealing ring 410 and/or the cartridge base 200, or disposed on the outer side of the cartridge base 200, and disposed on the inner side of the sealing ring 410 corresponding to the outer side of the cartridge base 200.
Referring to fig. 7, in some embodiments, the reagent box base 200 is provided with a storage hole 203 for storing the metal rod 110, and the hole wall of the storage hole 203 is provided with a clamping rib, so that when the metal rod 110 is pushed into the bottom of the storage hole 203, the clamping rib can clamp and fix the metal rod 110, thereby fixing the whole upper seat 100 above the reagent box base 200.
In some embodiments, the nucleic acid detecting reagent apparatus includes a positioning structure, the positioning structure includes a guide ring 510 disposed on one of the gasket 410 and the cartridge base 200, and a guide groove disposed on the other of the gasket 410 and the cartridge base 200, and the guide ring 510 is cooperatively connected with the guide groove. The positioning structure can ensure the assembly accuracy of the gasket 410 and the reagent cassette holder 200, and the guide ring 510 and the guide groove may be in an annular structure to ensure the concentricity of the connection of the gasket 410 and the reagent cassette holder 200.
In some embodiments, the reagent kit base 200 includes a plurality of platforms that hold the chamber 201, and the periphery of platform is located to the seal groove 402 ring, and the guide ring 510 is located the edge of platform and is protruding in the plane that the platform was located, and like this, after the guide ring 510 and the guide way cooperation are connected, the guide ring 510 can play certain sealed effect to the platform, and then promotes the sealed efficiency of sealed chamber 301 between reagent kit base 200 and the upper seat 100.
In some embodiments, the plurality of accommodating cavities 201 are formed in the top of the reagent cartridge base 200, the top of the reagent cartridge base 200 is a side of the reagent cartridge base 200 facing the upper seat 100, at least one sample port 202 communicated with the accommodating cavities 201 is formed in a side surface of the reagent cartridge base 200, a second sealing member 220 is movably disposed at the sample port 202, and the second sealing member 220 is used for sealing the sample port 202. In this embodiment, the containing chamber 201 connected to the sample port 202 may be a lysis chamber for performing a lysis reaction, a reaction solution may be added into the lysis chamber through the sample port 202, and the second sealing member 220 may be a sealing plug. To prevent the second seal 220 from being lost, in some embodiments, the second seal 220 is attached, preferably hinged, to the cassette base 200.
In some embodiments, the nucleic acid detection kit is further used in combination with an external sample application member, wherein the sample application member can move in and out of the pipette tip 600 of the sample application port 202. The sample adding component is a standard consumable.
In other embodiments, the nucleic acid detection reagent device includes a non-return part disposed in the sample addition port 202, the non-return part includes a non-return valve 700 disposed in the sample addition port 202, the non-return valve 700 abuts against an opening wall of the sample addition port 202, and the non-return valve 700 is provided with a liquid inlet and outlet channel for the pipette tip 600 to pass through. The check valve 700 may have a conical structure, which can effectively prevent the sample from flowing backward. Further, in order to further prevent the backflow of the sample injected from the sample injection port 202, the sample injection port 202 is inclined from top to bottom, so that the sample injected from the pipette tip 600 can flow into the containing chamber 201 along the port wall of the sample injection port 202 in an inclined manner under the action of gravity, thereby effectively preventing the backflow of the sample. In some embodiments, a limiting ring 800 is arranged in the check valve 700, an exhaust hole is formed in the limiting ring 800, and a through hole for the pipette tip 600 to pass through is formed in the center of the limiting ring 800, so that in the process of injecting the sample into the accommodating cavity 201, the gas in the accommodating cavity 201 can be exhausted through the exhaust hole, and the smooth addition of the sample is ensured. The pipette tip 600 may be a consumable for sample addition, is not stored in a reagent cartridge, and is only in a state when the sample is limited when the sample is added through the sample addition port.
Referring to fig. 8 and 9 together, in some embodiments, the nucleic acid detecting reagent apparatus includes a pre-buried tube 900 for accommodating a reactant; the embedded pipe 900 comprises a cylinder body 910 and aluminum foil films 920 arranged at two ends of the cylinder body 910, wherein the aluminum foil films 920 are used for sealing two ends of the cylinder body 910; a step structure 230 is formed on the wall of at least one accommodating cavity 201, one end of the embedded pipe 900 is connected with the step structure 230 in a matching manner, and the step structure 230 is sealed by an aluminum foil film 920. The pre-buried pipe 900 is used for storing reactants in advance, the reactants include liquid or solid for reaction, in the process of pre-burying the reactants, the pre-buried pipe 900 firstly uses the aluminum foil film 920 to seal one end of the cylinder 910, then the reactants are loaded into the cylinder 910, and finally the aluminum foil film 920 is used to seal the other end of the cylinder 910, so that pre-burying of the reactants is completed. The pre-buried pipe 900 is generally installed in the accommodating chamber 201 for the nucleic acid amplification reaction process, and at the time of reaction, the aluminum foil film 920 at both ends of the pre-buried pipe 900 is pierced by the metal rod 110 so that the reactant in the pre-buried pipe 900 can flow into the accommodating chamber 201 to perform the nucleic acid amplification reaction process. The reagent box base 200 is concavely provided with an embedded tube cavity and a reagent cavity at the position of the step structure 230, the embedded tube 900 is placed in the embedded tube cavity, and the aluminum foil film 920 at the bottom of the embedded tube 900 is tightly pressed and sealed with the step structure 230, so that the sealing performance between the embedded tube cavity and the reagent cavity is ensured. The pre-buried pipe 900 may be used to contain reactants, and may also be used to contain reagents or other objects.
The solution of the present application has been described in detail hereinabove with reference to the drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the system of the embodiment of the present application may be combined, divided, and deleted according to actual needs.
The foregoing description of the embodiments of the present application has been presented for purposes of illustration and description and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A nucleic acid detecting reagent device, comprising:
the reagent box comprises an upper seat and a reagent box base, wherein the upper seat and the reagent box base are arranged at intervals, the upper seat and the reagent box base are in sealed connection through a sealing structure, and a sealing cavity is formed between the upper seat and the reagent box base;
the upper seat is provided with a metal rod, the metal rod is arranged in the sealing cavity and is used for being magnetically connected with a magnet outside the sealing cavity;
the reagent box base is provided with a plurality of holding cavities, at least one of which is used for holding magnetic beads, and a plurality of holding cavities can be respectively communicated with the sealing cavity.
2. The nucleic acid detecting reagent apparatus according to claim 1, wherein:
the upper seat and the metal rod are of an integrally formed structure, and the metal rod extends towards the direction close to one side of the reagent box base from the upper seat.
3. The nucleic acid detecting reagent set according to claim 1, wherein:
it is a plurality of it is just right to hold the chamber respectively the opening in sealed chamber, it is a plurality of the opening part that holds the chamber sets up sealed film, sealed film is used for the encapsulation a plurality of hold the chamber.
4. The nucleic acid detecting reagent set according to claim 3, wherein:
the metal rod comprises a base and an end part, the base is connected with the upper seat, the end part is far away from the base, and the base is provided with a groove; and/or
The end part is provided with a puncturing part for puncturing the sealing film.
5. The nucleic acid detecting reagent apparatus according to claim 1, wherein:
the sealing structure comprises a sealing retainer ring arranged between the upper seat and the reagent box base, and the sealing retainer ring is respectively connected with the upper seat and the reagent box base in a sealing way.
6. The nucleic acid detecting reagent apparatus according to claim 5,
the sealing structure comprises a sealing film arranged between an upper seat and sealing check rings, the upper seat and the sealing check rings are arranged at intervals, and the sealing film is respectively connected with the upper seat and the sealing check rings in a sealing manner and forms the sealing cavity.
7. The nucleic acid detecting reagent apparatus according to claim 5, wherein:
the sealing structure comprises a sealing ring arranged between the sealing retainer ring and the reagent box base, the sealing retainer ring and/or the reagent box base are/is respectively provided with a sealing groove, and the sealing ring is arranged in the sealing groove and is contacted with the sealing retainer ring and the reagent box base;
the sealing retainer ring and the kit base are respectively provided with connecting surfaces which are mutually contacted and used for forming a sealing state.
8. The nucleic acid detecting reagent set according to claim 1, wherein:
the accommodating cavities are arranged at the top of the reagent box base, the top of the reagent box base is one side of the reagent box base facing the upper seat, at least one sample adding port communicated with the accommodating cavities is formed in the side face of the reagent box base, a second sealing piece is movably arranged at the sample adding port, and the second sealing piece is used for sealing the sample adding port.
9. The nucleic acid detecting reagent set according to claim 8, wherein:
the nucleic acid detection reagent device comprises a non-return part arranged in the sample port, the non-return part comprises a check valve arranged in the sample port, the check valve is abutted against the wall of the sample port, and the check valve is provided with a liquid inlet and outlet channel for a pipette tip to pass through.
10. The nucleic acid detecting reagent apparatus according to claim 1, wherein:
the nucleic acid detection reagent device comprises a pre-buried pipe for accommodating reactants;
the embedded pipe comprises a cylinder body and aluminum foil films arranged at two ends of the cylinder body, and the aluminum foil films are used for sealing two ends of the cylinder body;
and a step structure is formed on the wall of at least one accommodating cavity, one end of the embedded pipe is matched and connected with the step structure, and the step structure is sealed through the aluminum foil film.
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| CN202210244666.6A CN114634853B (en) | 2022-03-13 | 2022-03-13 | Nucleic acid detection reagent device |
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| CN202210244666.6A CN114634853B (en) | 2022-03-13 | 2022-03-13 | Nucleic acid detection reagent device |
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| CN114634853B (en) | 2023-05-02 |
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Effective date of registration: 20240201 Address after: 510000 room 603, building G12, No. 31 Kefeng Road, Huangpu District, Guangzhou, Guangdong Patentee after: Guangzhou Diao Gene Technology Co.,Ltd. Country or region after: China Address before: 510663 room 604, building G12, No. 31, Kefeng Road, Huangpu District, Guangzhou City, Guangdong Province Patentee before: SHOUXI (GUANGZHOU) MEDICAL TECHNOLOGY Co.,Ltd. Country or region before: China |