CN220573517U - Automatic exhaust inner cannula and sampling device - Google Patents
Automatic exhaust inner cannula and sampling device Download PDFInfo
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- CN220573517U CN220573517U CN202322100050.4U CN202322100050U CN220573517U CN 220573517 U CN220573517 U CN 220573517U CN 202322100050 U CN202322100050 U CN 202322100050U CN 220573517 U CN220573517 U CN 220573517U
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- pipe
- sample
- sample solution
- inner cannula
- pipe orifice
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- 238000005070 sampling Methods 0.000 title claims abstract description 9
- 239000000523 sample Substances 0.000 claims abstract description 49
- 239000012488 sample solution Substances 0.000 claims abstract description 48
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims abstract description 21
- 238000003780 insertion Methods 0.000 claims abstract description 16
- 230000037431 insertion Effects 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 238000013022 venting Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000002120 nanofilm Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The application relates to an automatic exhaust's inner tube and sampling device, the inner tube includes: the first pipe section comprises a first pipe orifice and a second pipe orifice, the first pipe orifice is used for adding a sample solution into the inner insertion pipe, and a filtering membrane is arranged at the second pipe orifice and is used for filtering the sample solution; the second pipe section comprises a third pipe orifice, and the third pipe orifice is used for being placed into a sample injection needle of a detection instrument to suck the sample solution out of the inner insertion pipe. The sample injection device comprises: the inner tube and the sample injection bottle. According to the automatic exhaust's interior intubate and sampling device that this application provided, load into interior intubate in-process with sample solution through first mouth of pipe, the filter membrane of second mouth of pipe department filters bubble and insoluble in the sample solution etc. selectively, makes things convenient for detecting instrument to absorb sample solution, ensures the accuracy of experimental data. In addition, the inner plug is integrated in the sample injection bottle to form an integral structure, so that the operation steps and the number of consumable materials are reduced, and the sample processing process is simplified.
Description
Technical Field
The application relates to the technical field of experimental equipment, in particular to an inner insertion tube and a sample injection device capable of automatically exhausting.
Background
The sample injection bottle and the inner insertion tube are experimental devices commonly used in the field of biological medicine or food agricultural product detection. In the prior art, in order to enable a detection instrument to accurately absorb a trace sample, an experimenter needs to put an inner cannula into a sample injection bottle, load a sample solution into the inner cannula by using a pipette, and then extend a sample injection needle into the inner cannula by the detection instrument to absorb the sample solution.
However, due to the narrow space at the bottom of the inner cannula, bubbles are easily generated during the process of loading the sample solution into the inner cannula, and the bubbles are not easily discharged, which may affect the accuracy of experimental data. The common sample injection bottle in laboratory generally needs manual operation to exhaust to ensure that no bubble exists when the sample enters the bottle, but the operation is tedious and the workload of experimental staff is increased.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides an automatic exhaust inner cannula and a sample injection device.
According to a first aspect of the present application, there is provided an automatic exhaust inner tube comprising:
the first pipe section comprises a first pipe orifice and a second pipe orifice, the first pipe orifice is used for adding a sample solution into the inner insertion pipe, and a filtering membrane is arranged at the second pipe orifice and is used for filtering the sample solution; and
the second pipe section comprises a third pipe orifice, and the third pipe orifice is used for being placed into a sample injection needle of a detection instrument to suck the sample solution out of the inner insertion pipe.
According to some embodiments of the application, the interposer further comprises:
and the bracket is arranged at the bottom of the outer side of the second pipe section and is used for supporting the inner cannula.
According to some embodiments of the present application, the filtration membrane employs a nanofilm whose pore size and shape are determined according to the filtration requirements of the sample solution.
According to some embodiments of the application, the diameter of the first tube section is greater than the diameter of the second tube section.
According to a second aspect of the present application, there is provided an automatic exhaust sample injection device, comprising:
an inner cannula according to the first aspect; and
the inner insertion tube is integrated in the sample injection bottle;
according to some embodiments of the present application, the first orifice of the inner cannula and the third orifice of the inner cannula are tangential to a mouth of the sample bottle, respectively.
According to some embodiments of the application, the interposer further comprises:
the bracket is arranged at the bottom of the outer side of the second pipe section, is abutted with the bottle bottom of the sample injection bottle and is used for fixing the inner insertion pipe in the sample injection bottle.
According to some embodiments of the present application, the axis of the second tube section is parallel to the axis of the sample feeding bottle, and the axis of the first tube section is inclined with respect to the axis of the sample feeding bottle.
According to the automatic exhaust inner cannula provided by the application, on one hand, in the process of loading a sample solution into the inner cannula through the first pipe orifice by using the liquid transfer device, the air bubbles, insoluble substances and the like in the sample solution are selectively filtered by the filter film at the second pipe orifice, and the manual exhaust operation is not needed. The filtered sample solution has no bubbles and insoluble particles, so that the sample solution can be accurately sucked by a convenient detection instrument, and the accuracy of experimental data is ensured. On the other hand, the third pipe orifice can be connected with the negative pressure device to create a negative pressure environment for the interior of the inner pipe, so that the filtering efficiency of the viscous sample solution which is difficult to filter is improved.
According to the automatic exhaust sampling device provided by the application, through integrating the inner insertion tube in the sampling bottle, an integral structure is formed, the inner insertion tube does not need to be manually inserted, the operation steps and the number of consumable parts are reduced through the integral structure design, the working efficiency is improved, and the sample processing process is simplified.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art from these drawings without departing from the scope of protection of the present application.
Fig. 1 is a schematic illustration of an inner insert tube for automatic venting according to an embodiment of the present application.
Fig. 2 is a schematic diagram of an automatic exhaust sample injection device according to an embodiment of the present application.
Reference numerals: 11 sample injection bottle, 12 inner cannula, 21 first tube section, 211 first tube opening, 212 second tube opening, 22 second tube section, 221 third tube opening, 23 filter membrane, 24 bracket.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Fig. 1 is a schematic illustration of an inner insert tube for automatic venting according to an embodiment of the present application. As shown in fig. 1, the inner tube 12 includes: a first tube section 21 comprising a first tube orifice 211 for feeding the sample solution into the inner cannula 12 and a second tube orifice 212, the second tube orifice 212 being provided with a filter membrane 23 for filtering the sample solution; and a second tube section 22 including a third tube orifice 221, the third tube orifice 221 being used for placing a sample injection needle of the detection instrument therein, and sucking the sample solution from the inner tube 12.
According to some embodiments, when the sample solution is added to the inner cannula 12, the sample solution is first added to the first tube segment 21 through the first tube orifice 211 using a pipette, and then flows from the first tube orifice 211 to the second tube orifice 212. The second nozzle 212 is located at the intersection of the first and second pipe sections 21 and 22 and communicates with the second pipe section 22, and a filter membrane 23 is provided at the second nozzle 212 for filtering the sample solution flowing down from the first nozzle 211. The sample solution filtered by the filter membrane 23 flows into the second pipe section 22, and when the filtered sample solution needs to be detected, the sample injection needle of the detecting instrument can extend into the second pipe section 22 from the third pipe orifice 221, and the filtered sample solution in the second pipe section 22 is sucked.
According to some embodiments, the third nozzle 221 of the second tube section 22 may be connected to a negative pressure device (e.g. a syringe) with a diameter adapted to the third nozzle 221, in addition to the sample needle used to insert the detection instrument, to create a negative pressure environment in the inner cannula 12, and to increase the filtration efficiency of the sample solution through the filter membrane 23 by the action of the negative pressure when the sample solution introduced into the first tube section 21 is a viscous sample solution that is relatively difficult to pass through the filter membrane 23.
According to some embodiments, the filtering membrane 23 inlaid at the second nozzle 212 is a nano-film, so that according to different sample solutions to be filtered, nano-films with different void sizes and shapes can be inlaid to selectively filter bubbles, insoluble substances and the like, so that the bubbles and insoluble substances cannot pass through the filtering membrane 23, and the sample solution can pass through the filtering membrane 23 and be retained in the second pipe section 22. The filtering effect can lead the sample solution to become clear without particles after filtering, and no bubbles exist, so that the detection instrument can accurately absorb the sample solution.
According to some embodiments, the first tube section 21 is loaded with the sample solution to be filtered by the filter membrane 23 and is inlaid with the filter membrane 23, and the diameter of the first tube section 21 is larger than the diameter of the second tube section 22 in view of the amount of the sample solution and the inlaid area of the filter membrane 23, so that the first tube section 21 can be loaded with more sample solution to be filtered and the inlaid area of the filter membrane 23 at the second tube orifice 212 can also be relatively larger in order to increase the filtration efficiency. According to one embodiment, the diameter of the first tube section 21 is one time larger than the diameter of the second tube section 22.
According to some embodiments, inner cannula 12 further comprises: a support 24 is provided at the outer bottom of the second tube section 22 for supporting the inner cannula 12.
According to the self-venting inner cannula 12 provided by the present application, during the process of loading the sample solution into the inner cannula 12 through the first nozzle 21 using the pipette, the filtering membrane 23 at the second nozzle 212 selectively filters out bubbles, insoluble substances, and the like in the sample solution, without requiring a manual venting operation. The filtered sample solution has no bubbles and insoluble particles, so that the sample solution can be accurately sucked by a convenient detection instrument, and the accuracy of experimental data is ensured. In addition, the third nozzle 221 can be connected to a negative pressure device to create a negative pressure environment inside the inner cannula 12, improving the filtration efficiency of the viscous sample solution that is more difficult to filter.
Fig. 2 is a schematic diagram of an automatic exhaust sample injection device according to an embodiment of the present application. As shown in fig. 2, the sample injection device includes: an automatic venting inner cannula 12 and a sample bottle 11 are shown in fig. 1.
According to some embodiments, sample bottle 11 is a bottle with a mouth, and inner cannula 12 is integrated into sample bottle 11, with both first and third mouths 211, 221 of inner cannula 12 being tangential to the mouth of sample bottle 11. According to some embodiments, the second nozzle 212 is located at 1/3 of the body of the sample injection bottle 11.
According to some embodiments, the sample solution filtered by the filter membrane 23 embedded at the second nozzle 212 of the first tube segment 21 flows from the second nozzle 212 into the second tube segment 22. According to some embodiments, the axis of the second tube section 22 is parallel to the axis of the sample bottle 11, and the axis of the first tube section 21 is inclined with respect to the axis of the sample bottle 11, so that the filtered sample solution can flow from the second tube orifice 212 into the second tube section 22. According to one embodiment, the first tube section 21 forms a 45 ° angle with the mouth of the sample bottle 11.
According to some embodiments, a bracket 24 at the bottom outside the second tube section 22 of the inner cannula 12 abuts the bottom of the sample bottle 11 to secure the inner cannula 12 in the sample bottle 11.
According to the automatic exhaust sampling device provided by the application, through integrating the inner insertion tube 12 in the sampling bottle 11, an integral structure is formed, the inner insertion tube 12 does not need to be manually inserted, the operation steps and the number of consumable parts are reduced through the integral structure design, the working efficiency is improved, and the sample processing process is simplified.
The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples have been provided herein to illustrate the principles and embodiments of the present application, and wherein the above examples are provided to assist in the understanding of the methods and concepts of the present application. Meanwhile, based on the ideas of the present application, those skilled in the art can make changes or modifications on the specific embodiments and application scope of the present application, which belong to the scope of the protection of the present application. In view of the foregoing, this description should not be construed as limiting the application.
Claims (7)
1. An automatic exhaust inner insert tube, comprising:
the first pipe section comprises a first pipe orifice and a second pipe orifice, the first pipe orifice is used for adding a sample solution into the inner insertion pipe, and a filtering membrane is arranged at the second pipe orifice and is used for filtering the sample solution; and
the second pipe section comprises a third pipe orifice, and the third pipe orifice is used for being placed into a sample injection needle of a detection instrument to suck the sample solution out of the inner insertion pipe.
2. The inner cannula according to claim 1, further comprising:
and the bracket is arranged at the bottom of the outer side of the second pipe section and is used for supporting the inner cannula.
3. The inner cannula of claim 1, wherein the filtration membrane employs a nanomembrane having pores sized and shaped according to the filtration requirements of the sample solution.
4. The inner cannula of claim 1, wherein the first tube segment has a diameter that is greater than a diameter of the second tube segment.
5. An automatic exhaust sampling device, which is characterized by comprising:
the inner cannula of claim 1; and
the inner insertion tube is integrated in the sample injection bottle;
the first pipe orifice of the inner cannula and the third pipe orifice of the inner cannula are respectively tangent with the bottle mouth of the sample injection bottle.
6. The sample injection device of claim 5, wherein the inner cannula further comprises: the bracket is arranged at the bottom of the outer side of the second pipe section, is abutted with the bottle bottom of the sample injection bottle and is used for fixing the inner insertion pipe in the sample injection bottle.
7. The sample introduction device of claim 5 wherein the axis of the second tube section is parallel to the axis of the sample introduction bottle and the axis of the first tube section is inclined relative to the axis of the sample introduction bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322100050.4U CN220573517U (en) | 2023-08-04 | 2023-08-04 | Automatic exhaust inner cannula and sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322100050.4U CN220573517U (en) | 2023-08-04 | 2023-08-04 | Automatic exhaust inner cannula and sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220573517U true CN220573517U (en) | 2024-03-12 |
Family
ID=90110404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322100050.4U Active CN220573517U (en) | 2023-08-04 | 2023-08-04 | Automatic exhaust inner cannula and sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220573517U (en) |
-
2023
- 2023-08-04 CN CN202322100050.4U patent/CN220573517U/en active Active
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