Pipette with filtering and separating device

Abstract

A pipette with a filtering and separating device comprises a pipette body and a pipette head, the pipette head is movably connected to the lower portion of the pipette body, a filtering and separating mechanism is arranged in the pipette head, and the filtering and separating mechanism comprises a plurality of filtering membranes with different pore diameters; the pipette body comprises a liquid storage cavity and a pressing suction head; according to the pipette with the separation device, separation and filtration of macromolecules and micromolecules are realized in the pipetting process, so that additional steps of centrifugation, filtration and the like are reduced, the experimental process is greatly simplified, and time and energy are saved; the filtering mechanism adopts a replaceable design, and a user can replace and clean the filtering mechanism according to needs, so that the risk of cross contamination is avoided, and the purity of a sample and the accuracy of an experimental result are ensured; the filtering module and the pipetting head are designed into detachable and replaceable structures, so that the cleaning and maintenance are convenient, the service life of the pipetting gun is prolonged, and the maintenance difficulty and cost are reduced.

Description

Technical Field

[0001] The utility model relates to the field of pipettes, in particular to a pipette with a filtration and separation device. Background Art

[0002] Traditional pipettes are mainly used for the transfer and distribution of liquids in laboratories, but they cannot separate and filter different molecules in the liquid. Currently, for experiments that require the separation of macromolecules and small molecules, additional equipment such as centrifuges or filtration devices are usually needed, which increases the complexity and time cost of the experiment. Therefore, it is of great significance to develop a pipette that can separate and filter macromolecules and small molecules during the pipetting process. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: to solve the problem of long time consumption for further separation and filtration after pipetting in the prior art, the utility model provides a pipette with a filtration and separation device.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a pipette with a filtration and separation device, including a pipette body and a pipette tip. The pipette tip is movably connected to the lower part of the pipette body. A filtration and separation mechanism is arranged inside the pipette tip. The filtration and separation mechanism includes two or more filter membranes with different pore sizes. The pipette body includes a liquid storage chamber and a pressing suction head.

[0005] Further, the filtration and separation mechanism includes a first filter membrane and a second filter membrane arranged from bottom to top.

[0006] Further, the first filter membrane is made of polyvinylidene fluoride material with a pore size of 0.3 - 0.5 microns, mainly used for intercepting macromolecules.

[0007] Further, the second filter membrane is made of polyethersulfone material with a pore size of 0.1 - 0.2 microns, mainly used for further separating small molecules.

[0008] Further, the pipette body is made of corrosion-resistant material to ensure compatibility with different reagents.

[0009] Further, the filtration and separation mechanism is detachably connected to the pipette tip, which is convenient for users to replace and clean.

[0010] Further, the pressing suction head is made of rubber material, which has a certain anti-slip effect and is convenient for operation.

[0011] Advantages of the Utility Model

[0012] The pipette with a separation device described in the present utility model realizes the separation and filtration of macromolecules and small molecules during the pipetting process, reducing additional steps such as centrifugation and filtration, greatly simplifying the experimental process, and saving time and effort; the filtration mechanism adopts a replaceable design, allowing users to replace and clean according to needs, avoiding the risk of cross-contamination, ensuring the purity of the sample and the accuracy of the experimental results; the filtration module and the pipette tip are designed as a detachable and replaceable structure, facilitating cleaning and maintenance, extending the service life of the pipette, and reducing the difficulty and cost of maintenance. Description of the Drawings

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0014] Figure 1 Schematic diagram of the pipette with a separation and filtration device according to the preferred embodiment of the present utility model;

[0015] Figure 2 Schematic diagram of the filtration and separation mechanism according to the preferred embodiment of the present utility model;

[0016] In the figure, 1 is the pipette body, 1-1 is the liquid storage chamber, 1-2 is the pressing tip, 2 is the pipette tip, 3 is the filtration and separation mechanism, 4 is the first filtration membrane, and 5 is the second filtration membrane. Detailed Description of the Embodiment

[0017] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "horizontal", "top", "inner", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present utility model can be understood according to specific circumstances.

[0020] AsFigure 1-2 As shown in the figure, a pipette with a filtration and separation device includes a pipette body 1 and a pipette tip 2. The pipette tip 2 is movably connected below the pipette body 1. A filtration and separation mechanism 3 is provided inside the pipette tip 2. The filtration and separation mechanism 3 includes two or more filter membranes with different pore sizes. The pipette body 1 includes a liquid storage chamber 1-1 and a pressing suction head 1-2.

[0021] The filtration and separation mechanism 3 includes a first filter membrane 4 and a second filter membrane 5 arranged from bottom to top. The first filter membrane 4 is made of polyvinylidene fluoride with a pore size of 0.4 microns, mainly used for intercepting macromolecules. The second filter membrane 5 is made of polyethersulfone with a pore size of 0.2 microns, mainly used for further separating small molecules.

[0022] The pipette body 1 is made of corrosion-resistant material to ensure compatibility with different reagents. The filtration and separation mechanism 3 is detachably connected to the pipette tip 2, facilitating users to replace and clean it. The pressing suction head 1-2 is made of rubber material, having a certain anti-slip effect for convenient operation.

[0023] During use, the user selects an appropriate pipette tip 2 and installs it on the pipette body 1. When sucking liquid, the liquid passes through the first filter membrane 4 to achieve a preliminary separation of macromolecules and small molecules. The liquid then continues to pass through the second filter membrane 5 to achieve further separation and purification. The filtered liquid enters the liquid storage chamber 1-1 and can be pipetted according to requirements. When the filtration and separation mechanism 3 is used, it can be taken out of the pipette tip 2 for cleaning to ensure that the experimental sample will not be contaminated during the next pipetting.

[0024] In this specification, the schematic description of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments.

[0025] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification and must be determined according to the scope of the claims.

Claims

1. A pipette with a filtering and separating device, characterized in that, It includes a pipette body (1) and a pipette tip (2). The pipette tip (2) is movably connected below the pipette body (1). A filtration and separation mechanism (3) is provided inside the pipette tip (2). The filtration and separation mechanism (3) includes two or more filter membranes with different pore sizes. The pipette body (1) includes a liquid storage chamber (1-1) and a pressing suction head (1-2). The filtration and separation mechanism (3) includes a first filter membrane (4) and a second filter membrane (5) arranged from bottom to top. The first filter membrane (4) is made of polyvinylidene fluoride with a pore size of 0.3 - 0.5 microns. The second filter membrane (5) is made of polyethersulfone with a pore size of 0.1 - 0.2 microns.

2. The pipette with a filtration and separation device according to claim 1, characterized in that, The pipette body (1) is made of corrosion-resistant material.

3. The pipette with a filtering and separating device according to claim 1, wherein, The filtration and separation mechanism (3) is detachably connected to the pipette tip (2).

4. The pipette with a filtering and separating device according to claim 1, wherein The pressing suction head (1-2) is made of rubber material.

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