CN220495798U - Three-layer filter element of pipette suction head convenient for automatic filling - Google Patents
Three-layer filter element of pipette suction head convenient for automatic filling Download PDFInfo
- Publication number
- CN220495798U CN220495798U CN202322010416.9U CN202322010416U CN220495798U CN 220495798 U CN220495798 U CN 220495798U CN 202322010416 U CN202322010416 U CN 202322010416U CN 220495798 U CN220495798 U CN 220495798U
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- filter layer
- layer
- filter
- micropores
- pipette tip
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- 239000011148 porous material Substances 0.000 claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 239000004695 Polyether sulfone Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920003208 poly(ethylene sulfide) Polymers 0.000 claims description 3
- 229920006393 polyether sulfone Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 230000037452 priming Effects 0.000 claims 5
- 238000000034 method Methods 0.000 abstract description 12
- 239000000443 aerosol Substances 0.000 abstract description 7
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000012472 biological sample Substances 0.000 description 16
- 239000007788 liquid Substances 0.000 description 11
- 239000000523 sample Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 2
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Abstract
The utility model discloses a three-layer filter element of a pipette tip, which is convenient for automatic filling and comprises a first filter layer, a second filter layer and a third filter layer, wherein the first filter layer is arranged on the upper end wall of the second filter layer, the third filter layer is arranged on the lower end wall of the second filter layer, a plurality of first micropores, second micropores and third micropores are respectively arranged on the first filter layer, the second filter layer and the third filter layer, the pore sizes of the first micropores and the third micropores are the same, and the pore sizes of the first micropores and the third micropores are larger than the pore sizes of the second micropores. The utility model can enable the filter element to be filled into the pipette tip in random orientation without adding an additional procedure for enabling the filter element to be oriented consistently, thereby greatly facilitating the automatic filling of the filter element, improving the filling efficiency, reducing the cost, enhancing the capability of blocking aerosol while guaranteeing the air permeability, forming a good protection structure between the pipette and the sample, and having strong practicability.
Description
Technical Field
The utility model relates to the technical field of pipette tip filter cores, in particular to a three-layer filter core of a pipette tip, which is convenient for automatic filling.
Background
A pipette, also called a pipette, is a metering tool that removes liquid from an original container into another container over a range of ranges. Is widely used in the fields of biology, chemistry and the like. The pipettor is widely used in clinical laboratories because of simple basic structure, convenient use and the like. The basic structure of the device mainly comprises a display window, a capacity adjusting part, a piston, a 0-shaped ring, a suction tube, a suction head (a liquid suction nozzle) and the like, and in order to prevent cross contamination in the use process, a filter element is usually required to be placed in the suction head of the liquid dispenser, a sample is effectively prevented from entering the liquid dispenser through the filter element to cause damage of the liquid dispenser, the service life of the liquid dispenser is greatly prolonged, a protection structure is effectively formed between the liquid dispenser and the sample, and the safety of the sucked sample is ensured.
At present, most of the traditional pipette tip filter cores on the market adopt a double-layer filter core formed by overlapping two filter layers with different apertures. However, in the process of filling the double-layer filter element into the pipette tip, the alignment of the double-layer filter element is generally required, so that inconvenience is brought to automatic filling, and an additional procedure for aligning the alignment of the filter element is required in the process of automatically filling the double-layer filter element into the pipette tip, thereby influencing the automatic filling efficiency of the filter element and increasing the cost.
Therefore, there is a need to design a three-layer cartridge for a pipette tip that facilitates automated loading to overcome the problems of the prior art described above.
Disclosure of Invention
The utility model mainly aims to provide a three-layer filter element of a pipette suction head, which is convenient for automatic filling, and aims to solve the technical problems that the existing double-layer filter element is inconvenient to automatically fill into the pipette suction head, and a procedure for enabling the filter element to face uniformly is additionally added, so that the automatic filling efficiency of the filter element is influenced and the cost is increased.
In order to achieve the above purpose, the three-layer filter element of the pipette tip convenient for automatic filling provided by the utility model comprises a first filter layer, a second filter layer and a third filter layer, wherein the shapes of the first filter layer, the second filter layer and the third filter layer are all in a cylindrical structure, the outer diameters of the first filter layer, the second filter layer and the third filter layer are the same, the first filter layer is arranged on the upper end wall of the second filter layer, the third filter layer is arranged on the lower end wall of the second filter layer, a plurality of first micropores, second micropores and third micropores are respectively arranged on the first filter layer, the second filter layer and the third filter layer, the pore sizes of the first micropores and the third micropores are the same, and the pore sizes of the first micropores and the third micropores are larger than those of the second micropores.
Optionally, the first, second, and third filter layers are each formed of PP, GF, PTFE, PVDF, PES, CA, MCE or nylon.
Optionally, the diameters of the first filter layer, the second filter layer and the third filter layer are in a range of 0.25 mm-20 mm.
Optionally, the thickness of the first filter layer, the second filter layer and the third filter layer ranges from 0.01mm to 3.5mm.
Optionally, the pore size of the first and third micropores is in the range of 1 μm to 150 μm.
Optionally, the second micropores each have a pore size less than or equal to 100 μm.
Optionally, the first, second, and third filter layers have an air resistance value in a range of less than or equal to 200mmHg.
The technical scheme of the utility model has the following beneficial effects: according to the technical scheme, the first filter layer is arranged on the upper end wall of the second filter layer, the third filter layer is arranged on the lower end wall of the second filter layer, the first filter layer, the second filter layer and the third filter layer are respectively provided with a plurality of first micropores, second micropores and third micropores, the pore sizes of the first micropores and the third micropores are the same, and the pore sizes of the first micropores and the third micropores are larger than the pore sizes of the second micropores, so that the filter element does not need to distinguish the orientation of the filter element in the process of filling the filter element into the pipette tip, the filter element can be randomly oriented to be filled into the pipette tip, and can be normally used, and therefore, an additional procedure for enabling the orientation of the filter element to be consistent is not needed, the automatic filling of the filter element is greatly facilitated, the filling efficiency is improved, the cost is reduced, the first filter layer, the second filter layer and the third filter layer have strong hydrophobicity, the capability of blocking aerosol is enhanced, the pollution of fluid and liquid vapor to the inside the pipette tip is avoided, the structure is effectively formed between the pipette tip and a sample, the sample is effectively formed, the cross-shaped structure is prevented from being harmful to the cross-shaped, the biological sample is particularly dangerous to the biological sample is protected, the cross-cell is high in the safety and the biological sample is well-borne by the sample, and the biological sample is protected from the cross-borne by the high-borne by the virus, and the biological sample is especially, and the biological sample is well.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a three-layer filter element of a pipette tip for facilitating automatic filling;
FIG. 2 is a schematic view of the overall structure of a three-layer cartridge for a pipette tip for facilitating automated loading in accordance with the present utility model;
fig. 3 is a schematic cross-sectional structure of a three-layer filter element of a pipette tip for facilitating automatic filling.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a three-layer filter element of a pipette suction head, which is convenient for automatic filling.
As shown in fig. 1 to 3, in an embodiment of the present utility model, the three-layer filter core of the pipette tip for convenient automatic filling includes a first filter layer 101, a second filter layer 102 and a third filter layer 103, wherein the shapes of the first filter layer, the second filter layer and the third filter layer are all in a cylindrical structure, the outer diameters of the first filter layer, the second filter layer and the third filter layer are the same, the first filter layer is disposed on an upper end wall of the second filter layer, the third filter layer is disposed on a lower end wall of the second filter layer, the first filter layer, the second filter layer and the third filter layer are respectively provided with a plurality of first micropores 1011, second micropores 1021 and third micropores 1031, the pore sizes of the first micropores and the third micropores are the same, and the pore sizes of the first micropores and the third micropores are larger than those of the second micropores. And the first filter layer and the third filter layer are both white in color, and the second filter layer is blue in color.
The first filter layer, the second filter layer and the third filter layer can be made of materials with the functions of blocking aerosol and air suspension, such as PP, GF, PTFE, PVDF, PES, CA, MCE or nylon, or other microporous filter membranes.
According to the technical scheme, the first filter layer, the second filter layer and the third filter layer which can block aerosol and air suspension are adopted, so that the air permeability is ensured, the aerosol blocking capacity is enhanced, the pollution of fluid and liquid steam to the inside of a pipette is avoided, a protection structure is effectively formed between the pipette and a sample, and the safety of sample suction is ensured; and the harm of gas residues in the gun body to operators in the pipetting process is reduced.
In this embodiment, the diameter sizes of the first filter layer, the second filter layer, and the third filter layer are in the range of 0.25mm to 20mm.
In this embodiment, the thickness of the first, second, and third filter layers ranges from 0.01mm to 3.5mm.
In this embodiment, the pore size of the first and third micropores is in the range of 1 μm to 150 μm.
In the embodiment, the aperture of the second micropore is smaller than or equal to 100 μm, so that aerosol can be effectively blocked, and pollution of fluid and liquid vapor to the inside of the pipette gun is avoided.
In this embodiment, the air resistance value ranges of the first filter layer, the second filter layer, and the third filter layer are 200mmHg or less.
Specifically, the working principle and the working process of the utility model are as follows: according to the utility model, the three layers of filter layers are arranged, the first filter layer is arranged on the upper end wall of the second filter layer, the third filter layer is arranged on the lower end wall of the second filter layer, the first filter layer, the second filter layer and the third filter layer are respectively provided with a plurality of first micropores, second micropores and third micropores, the pore sizes of the first micropores and the third micropores are the same, and the pore sizes of the first micropores and the third micropores are both larger than those of the second micropores, so that the filter element does not need to distinguish the orientation of the filter element in the process of filling the filter element into the pipette tip, the filter element can be randomly oriented into the pipette tip, and can be normally used, and therefore, an additional procedure for enabling the orientation of the filter element to be consistent is not needed, the automatic filling of the filter element is greatly facilitated, the filling efficiency is improved, the cost is reduced, the first filter layer, the second filter layer and the third filter layer have strong hydrophobicity, the capability of blocking aerosol is enhanced, the inner part of a pipette gun is prevented from being polluted by fluid and liquid vapor, a cross-formed structure between the pipette tip and a sample is effectively ensured, the pipette tip is prevented from being polluted, the cross-polluted structure is particularly, the biological sample is protected from being polluted by the high-level sample is well, the biological sample is protected, and the biological sample is protected from being polluted by the biological sample is in the biological sample, and the biological sample is protected from being in the high-quality, and the biological sample is in the biological sample is protected from being polluted, and has the biological sample and has high-quality and has high quality and has the biological sample.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (7)
1. The utility model provides a convenient automatic three-layer filter core of pipettor suction head of filling, its characterized in that, including first filter layer, second filter layer and third filter layer, the appearance of first filter layer, second filter layer and third filter layer all is the cylinder structure setting, just the external diameter size of first filter layer, second filter layer and third filter layer is the same, first filter layer sets up on the upper end wall of second filter layer, the third filter layer set up in on the lower end wall of second filter layer, first filter layer, second filter layer and third filter layer are equipped with a plurality of first micropore, second micropore and third micropore respectively, the aperture size of first micropore and third micropore is the same, just the aperture size of first micropore and third micropore is all greater than the aperture size of second micropore.
2. The pipette tip three-layer cartridge of claim 1 wherein said first, second and third filter layers are each formed of PP, GF, PTFE, PVDF, PES, CA, MCE or nylon.
3. The three-layer cartridge of a pipette tip facilitating automated priming according to claim 1, wherein the first, second and third filter layers have a diameter size in the range of 0.25mm to 20mm.
4. The three-layer cartridge of a pipette tip facilitating automated priming according to claim 1, wherein the thickness of the first, second and third filter layers ranges from 0.01mm to 3.5mm.
5. The three-layer cartridge of a pipette tip facilitating automated priming according to claim 1, wherein the pore size of said first and third microwells ranges from 1 μm to 150 μm.
6. The pipette tip three-layer cartridge for facilitating automated priming according to claim 1, wherein the pore size of said second microwells is less than or equal to 100 μm.
7. The three-layer cartridge of a pipette tip facilitating automated priming according to claim 1, wherein the first, second and third filter layers have a range of air resistance values of less than or equal to 200mmHg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322010416.9U CN220495798U (en) | 2023-07-28 | 2023-07-28 | Three-layer filter element of pipette suction head convenient for automatic filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322010416.9U CN220495798U (en) | 2023-07-28 | 2023-07-28 | Three-layer filter element of pipette suction head convenient for automatic filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220495798U true CN220495798U (en) | 2024-02-20 |
Family
ID=89870802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322010416.9U Active CN220495798U (en) | 2023-07-28 | 2023-07-28 | Three-layer filter element of pipette suction head convenient for automatic filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220495798U (en) |
-
2023
- 2023-07-28 CN CN202322010416.9U patent/CN220495798U/en active Active
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