Detection test tube for one-time liquid adding batch reaction
By adding a centrifugal liquid adding structure in the test tube, and using centrifugal force to add the second reagent after the first reagent is completely reacted with the specimen to be tested, the problem of failure or errors in the diagnostic reagent caused by the early addition of the second reagent is solved, and the problem of failure or errors in the results of the diagnosis reagent caused by the early addition of the second reagent is improved. Accuracy of the test results.
Patent Information
- Application Number
- CN202421228543.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In the prior art, before adding the first reagent to react with the sample to be tested, it is prone to fall into the test tube due to improper operation, resulting in the first reagent not fully reacting with the sample to be tested, and thus causing the second reagent to be reacted with the reaction system. Mix, resulting in failure of diagnostic reagents or errors in results.
Design a test tube for batch reaction of liquid adding in one batch. By adding a centrifugal liquid adding structure to the test tube, using a centrifugal filter element and a connecting rod, the second reagent is passed after the first reagent and the specimen to be tested have completed the reaction, and then passed. Centrifugal force enters the reaction system.
Ensure that the second reagent is added after the first reagent is completely reacted with the specimen to be tested, avoiding mixing the second reagent with the incompletely reacted system, and improving the effectiveness of the diagnostic reagent and the accuracy of the detection results.
Smart Images
Figure CN222490119U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of experimental supplies and relates to a detection test tube for one-time liquid addition and batch reaction. Background Art
[0002] In the process of using diagnostic reagents, they are usually used in conjunction with test tubes. The usual specific detection method is as follows: first add the reagent to the test tube, then add the specimen to be tested to the reagent, wait for a certain reaction time, and then the diagnostic result can be obtained, or the mixed solution after the reaction is completed is added to the corresponding test paper to obtain the diagnostic result. However, some diagnostic reactions require the use of two reaction reagents (specifically divided into a first reagent and a second reagent) and need to react with the specimen to be tested in batches. The specific detection method of this type of diagnostic reagent is as follows: first add the first reagent to the test tube, then add the specimen to be tested to the reagent, wait for a certain reaction time, then open the cover and add the second reagent, and wait for a certain reaction time, then the diagnostic result can be obtained, or the mixed solution after the reaction is completed is added to the corresponding test paper to obtain the diagnostic result.
[0003] For detection reactions that need to be performed in batches, after the first reagent is added and the sample to be detected is completed for the first reaction, in order to avoid contamination from sources of pollution in the environment to the sample to be detected that has been added to the first reagent and completed the first reaction, or to avoid contamination of the environment by reaction products after the first reaction or biosafety risks to the operator, after the first reaction is completed, the operator must open the detection tube very carefully, or transfer the tube to a specific instrument to open it, which makes the operation process very cumbersome, places extremely high demands on the operator, and often leads to erroneous detection results; a current solution is to add the first reagent and the sample to be detected into the detection tube, then drop the second reagent on the tube cap (inside of the tube) of the detection tube, and then carefully and slowly install the tube cap on the detection tube, use the adhesion of the second reagent to the tube cap to prevent it from falling into the detection tube, and then wait for the first reagent and the sample to be detected to complete the first reaction, and then gently shake the detection tube or directly centrifuge it so that the first reagent falls into the detection tube, thereby performing the second reaction.
[0004] However, this method currently has extremely high operational requirements for experimental operators and is extremely unstable. When the operator is installing the test tube cover or the first reaction, the second reagent may fall into the test tube at any time, resulting in the first reagent and the specimen to be tested not reacting completely. The second reagent is mixed with the detection reaction system, which in turn causes the diagnostic reagent to fail or the diagnostic result to be erroneous. Utility Model Content
[0005] In view of this, the purpose of the utility model is to provide a detection test tube for one-time liquid addition and batch reaction, which adds the first reagent and the second reagent into different positions in the detection test tube at one time, and ensures that the second reagent enters the reaction system after the first reagent and the specimen to be detected have completed the reaction based on the principle of centrifugal filtration, so as to solve the problem that the second reagent reacts with the reaction system before the first reagent and the specimen to be detected have not completely reacted, resulting in failure of the diagnostic reagent or erroneous diagnostic results.
[0006] In order to achieve the above object, the utility model provides the following technical solutions:
[0007] A detection test tube for batch reaction by adding liquid once, comprising a detection test tube and a test tube cover detachably connected to the detection test tube, and also comprising a centrifugal liquid adding structure connected to a side of the test tube cover close to the detection test tube, and when the test tube cover and the detection test tube are in a connected state, the centrifugal liquid adding structure is located in the inner cavity of the detection test tube;
[0008] The centrifugal liquid adding structure includes a connecting rod and a centrifugal filter element, wherein the two ends of the connecting rod are respectively connected to the test tube cover and the centrifugal filter element to fix the centrifugal filter element to the test tube cover, and the length of the connecting rod is less than the length of the test tube, so that after the test tube cover is connected to the test tube, the centrifugal filter element is located in the middle of the test tube, and the centrifugal filter element is placed horizontally to carry the test agent, and the test agent passes through the centrifugal filter element under the action of centrifugal force and enters the bottom of the test tube.
[0009] Furthermore, the centrifugal filter element is a centrifugal filter mesh or a centrifugal filter membrane, so that the detection reagent passes through the centrifugal filter element under the action of centrifugal force.
[0010] Furthermore, an annular baffle is provided on one side of the centrifugal filter element close to the test tube cover, so that the centrifugal filter element can carry a certain volume of liquid and prevent the detection reagent on the centrifugal filter element from entering the test tube from the side of the centrifugal filter element due to operator error during the connection process between the test tube cover and the test tube.
[0011] Furthermore, the test tube and the test tube cover are connected by threads.
[0012] The beneficial effects of the utility model are:
[0013] The utility model provides a detection test tube for batch reaction with liquid addition once. By improving the existing detection test tube and adding a centrifugal liquid addition structure, a detection test tube for batch reaction with liquid addition once is provided, thereby solving the problem that the second reagent is dripped into the inner side of the tube cover in the prior art to temporarily isolate the second reagent from the reaction system. However, when the operator installs the test tube cover or the first reaction is carried out, the second reagent may fall into the detection test tube at any time, resulting in the second reagent being mixed with the reaction system when the first reagent has not reacted completely with the specimen to be detected, thereby causing the diagnostic reagent to fail or the diagnostic result to be erroneous.
[0014] Furthermore, after adding liquid once until all reagents have completely reacted with the sample to be tested, there is no need to open the test tube, which ensures that the test reagents are not polluted by the environment, and that the first reaction products do not pollute the environment or cause harm to the operator, thereby ensuring the accuracy of the test.
[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:
[0017] Figure 1 This is a schematic structural diagram of a detection test tube for one-time liquid addition and batch reaction in the utility model;
[0018] Figure 2 It is a structural schematic diagram of the centrifugal liquid adding structure in the utility model.
[0019] Figure numerals: 1 - test tube, 2 - test tube cover, 3 - centrifugal liquid adding structure, 31 - connecting rod, 32 - centrifugal filter element, 33 - annular baffle. DETAILED DESCRIPTION
[0020] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.
[0021] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.
[0022] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0023] See also Figure 1-2 , is a detection test tube for batch reaction with one-time liquid addition, comprising a detection test tube 1, a test tube cover 2 detachably connected to the detection test tube, and a centrifugal liquid addition structure 3 connected to the test tube cover 2 near the side of the detection test tube 1, and when the test tube cover 2 and the detection test tube 1 are in a connected state, the centrifugal liquid addition structure 3 is located in the inner cavity of the detection test tube 1;
[0024] The centrifugal liquid adding structure 3 includes a connecting rod 31 and a centrifugal filter element 32. The two ends of the connecting rod 31 are respectively connected to the test tube cover 2 and the centrifugal filter element 32 to fix the centrifugal filter element 32 to the test tube cover 2, and the length of the connecting rod 31 is less than the length of the test tube 1, so that the centrifugal filter element 32 is located in the middle of the test tube 1. The centrifugal filter element 32 is horizontally arranged in the test tube 1 for carrying the test agent, and the test agent can pass through the centrifugal filter element 32 under the action of centrifugal force and enter the bottom of the test tube 1.
[0025] Specifically, the centrifugal filter element 32 can be specifically configured as a centrifugal filter net or a centrifugal filter membrane, so that the detection reagent dropped thereon can be stably placed thereon without leakage when not subjected to centrifugal force, and can pass through the centrifugal filter element 32 under the action of centrifugal force and enter the reaction liquid at the bottom of the detection test tube; the connecting rod 31 is a slender plastic rod that can play a connecting support role.
[0026] Preferably, an annular baffle 33 is further provided on one side of the centrifugal filter 32 close to the test tube cover 2 to carry a certain volume of liquid and prevent the detection reagent on the centrifugal filter 32 from entering the test tube 1 from the side of the centrifugal filter 32 due to the operator's error during the connection process between the test tube cover and the test tube, so as to increase the operator's fault tolerance and reduce the operating requirements for the operator. Preferably, the test tube 1 and the test tube cover 2 are connected by threads.
[0027] The method of using the test tube is as follows:
[0028] First, the test tube 1 and the test tube cover 2 are separated, and the centrifugal filter structure 3 is also separated from the test tube 1 driven by the test tube cover 2, and then the first reagent is added to the test tube 1, and then the second test reagent is dripped into the centrifugal filter element 32 in the centrifugal filter structure 3 on the side close to the test tube cover 2, and finally the specimen to be tested is added to the first reagent added to the test tube 1, and the test tube 1 and the test tube cover 2 are connected, so that the centrifugal filter structure 3 is placed in the test tube 1, and the first reagent is not mixed with the second reagent;
[0029] After the first reagent and the sample to be tested have completed their reaction, the test tube is placed in a centrifuge (or the operator gently shakes the test tube to generate centrifugal force toward the bottom of the test tube), so that the second reagent passes through the centrifugal filter 32 under the action of the centrifugal force and enters the reaction liquid at the bottom of the test tube to react. The diagnosis result can be obtained after the second reaction is completed, or the test tube cover is opened to take out the mixed liquid after the reaction is completed and drop it onto the corresponding test paper to obtain the diagnosis result.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.
Claims
1. A test tube for batch reaction with one-time liquid addition, comprising a test tube and a test tube cover detachably connected to the test tube, characterized in that: It also includes a centrifugal liquid adding structure connected to the test tube cover near the test tube, and when the test tube cover and the test tube are in a connected state, the centrifugal liquid adding structure is located in the inner cavity of the test tube; The centrifugal liquid adding structure includes a connecting rod and a centrifugal filter element, wherein the two ends of the connecting rod are respectively connected to the test tube cover and the centrifugal filter element to fix the centrifugal filter element to the test tube cover, and the length of the connecting rod is less than the length of the test tube, so that after the test tube cover is connected to the test tube, the centrifugal filter element is located in the middle of the test tube, and the centrifugal filter element is placed horizontally to carry the test agent, and the test agent passes through the centrifugal filter element under the action of centrifugal force and enters the bottom of the test tube.
2. The test tube for one-time liquid addition batch reaction according to claim 1, characterized in that: The centrifugal filter element is a centrifugal filter screen or a centrifugal filter membrane, so that the detection reagent passes through the centrifugal filter element under the action of centrifugal force.
3. The test tube for one-time liquid addition batch reaction according to claim 1, characterized in that: An annular baffle is also provided on one side of the centrifugal filter element close to the test tube cover, so that the centrifugal filter element can carry a certain volume of liquid.
4. The test tube for one-time liquid addition batch reaction according to claim 1, characterized in that: The detection test tube and the test tube cover are connected by threads.