Extracting device with filtering function for pipette

Abstract

The utility model discloses an extraction device for a pipette with a filtering function, which comprises the pipette and a suction head movably sleeved at the tail end of the pipette, a filtering component covers an opening at the tail end of the suction head, and a protection component for cleaning the filtering component is arranged at the tail end of the suction head. The mounting assembly is used for connecting the filtering assembly and the protection assembly; wherein the filter assembly comprises an inner filter cartridge and an outer filter cartridge, the inner filter cartridge is conical, the outer filter cartridge covers the outer part of the inner filter cartridge, and the aperture of the outer filter cartridge is larger than that of the inner filter cartridge; the protection assembly comprises a cleaning cylinder, and the cleaning cylinder movably sleeves the outer surface of the outer filter cylinder; the mounting assembly comprises a connecting sleeve, the connecting sleeve is detachably connected to the tail end of the suction head, and the filtering assembly and the protection assembly are both connected to the connecting sleeve; by means of the designed filter assembly, the inner filter cylinder and the outer filter cylinder are matched with each other, tissue residues are isolated outside when the suction head sucks tissue fluid through double filtration, rapid extraction of the tissue fluid is facilitated, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction devices for pipette guns, in particular to an extraction device for pipette guns with a filtering function. Background Art

[0002] Currently, tissue materials are often needed in biological experiments. Tissue materials are generally obtained by crushing the tissue and extracting tissue fluid. However, the tissue fluid at this time is mixed with tissue residues and needs to be filtered and separated before it can be used in experiments.

[0003] The pipette is a common small instrument in the laboratory and plays an important role in the quantitative transfer of liquids. If the tissue fluid can be filtered and separated at the same time while being transferred, it will save extra filtration time and solve the problem of slow tissue fluid collection.

[0004] For this reason, we propose an extraction device for a pipette with a filtering function. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides an extraction device for a pipette with a filtering function. Through the designed filtering component, the inner filter cartridge and the outer filter cartridge cooperate with each other, and the double filtration isolates the tissue residues outside when the pipette tip absorbs the tissue fluid, which is beneficial to the rapid extraction of the tissue fluid and saves time.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A pipette extraction device with a filtering function, comprising a pipette and a suction head movably sleeved on the end of the pipette, the end opening of the suction head is covered with a filter assembly, the end of the suction head is provided with a protective assembly for cleaning the filter assembly, and a mounting assembly for connecting the filter assembly and the protective assembly;

[0008] Wherein, the filter assembly includes an inner filter cartridge and an outer filter cartridge, the inner filter cartridge has a conical shape, the outer filter cartridge covers the outside of the inner filter cartridge, and the pore size of the outer filter cartridge is larger than the pore size of the inner filter cartridge; the protection assembly includes a cleaning cartridge, and the cleaning cartridge is movably sleeved on the outer surface of the outer filter cartridge; the installation assembly includes a connecting sleeve, and the connecting sleeve is detachably connected to the end of the suction head, and the filter assembly and the protection assembly are both connected to the connecting sleeve.

[0009] As a preferred solution of the extraction device for a pipette with filtering function described in the utility model, the installation assembly also includes a threaded sleeve, which is coaxially connected to the end opening of the suction tip, and the connecting sleeve and the threaded sleeve are threadedly connected.

[0010] As a preferred solution of the extraction device for a pipette with filtering function described in the utility model, a sleeve hole is opened on the bottom surface of the connecting sleeve, the outer filter cartridge is connected and fixed to the bottom surface of the connecting sleeve and covers the sleeve hole, and the inner filter cartridge extends into the interior of the outer filter cartridge through the sleeve hole.

[0011] As a preferred embodiment of the extraction device for a pipette with a filtering function described in the utility model, the outer edge of the top surface of the inner filter cylinder is connected with a mounting ring, the top surface of the mounting ring is fitted with the bottom surface of the threaded sleeve, and the bottom surface of the mounting ring is fitted with the inner bottom surface of the connecting sleeve.

[0012] As a preferred solution of the extraction device for a pipette with filtering function described in the utility model, sealing gaskets are connected to the upper and lower surfaces of the mounting ring.

[0013] As a preferred solution of the extraction device for a pipette with filtering function described in the utility model, a flexible support strip is connected between the top surface of the cleaning cylinder and the bottom surface of the connecting sleeve, and the bottom surface of the cleaning cylinder protrudes from the bottom surface of the outer filter cylinder.

[0014] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0015] Through the designed filter component, the inner filter cartridge and the outer filter cartridge cooperate with each other, and the double filtration isolates the tissue residues when the pipette tip absorbs the tissue fluid, which is beneficial to the rapid extraction of the tissue fluid and saves time. The conical design of the inner filter cartridge significantly increases the surface area, which can effectively prevent the filter holes of the inner filter cartridge from being blocked by tissue residues. Through the designed protection component, the cleaning cylinder moves along the outer filter cartridge to scrape off the tissue residues to prevent the tissue residues from blocking the filter holes of the filter component. The designed installation component is beneficial to the rapid disassembly and assembly of the filter component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram of the structure of an extraction device for a pipette with filtering function.

[0017] Figure 2 The present invention is a schematic diagram of a pipette tip of an extraction device for a pipette with filtering function.

[0018] Figure 3 The present invention is a schematic diagram of a filtering component of an extraction device for a pipette gun having a filtering function.

[0019] Figure 4 The present invention is a schematic diagram of a connecting sleeve of an extraction device for a pipette with a filtering function.

[0020] Among them: 1. Pipette; 2. Pipette tip; 3. Threaded sleeve; 4. Inner filter cartridge; 5. Mounting ring; 6. Sealing gasket; 7. Connecting sleeve; 8. Outer filter cartridge; 9. Cleaning cartridge; 10. Flexible support strip; 11. Sleeve hole. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Example 1

[0025] Please refer to Figures 1 to 4 As shown, this embodiment provides an extraction device for a pipette with a filtering function, comprising a pipette 1 and a suction head 2 movably sleeved on the end of the pipette 1;

[0026] The end opening of the suction head 2 is covered with a filter assembly, the end of the suction head 2 is provided with a protective assembly for cleaning the filter assembly, and a mounting assembly for connecting the filter assembly and the protective assembly; wherein the filter assembly includes an inner filter cartridge 4 and an outer filter cartridge 8, the inner filter cartridge 4 is conical in shape, the outer filter cartridge 8 covers the outside of the inner filter cartridge 4, and the pore size of the outer filter cartridge 8 is larger than the pore size of the inner filter cartridge 4; the protective assembly includes a cleaning cartridge 9, the cleaning cartridge 9 is movably sleeved on the outer surface of the outer filter cartridge 8; the mounting assembly includes a connecting sleeve 7, the connecting sleeve 7 is detachably connected to the end of the suction head 2, the filter assembly and The protective components are all connected to the connecting sleeve 7. Through the designed filtering component, the inner filter cartridge 4 and the outer filter cartridge 8 cooperate with each other. The double filtration allows the suction head 2 to isolate the tissue residues when absorbing tissue fluid, which is beneficial to the rapid extraction of tissue fluid and saves time. The conical design of the inner filter cartridge 4 significantly increases the surface area, which can effectively prevent the filter holes of the inner filter cartridge 4 from being blocked by tissue residues. Through the designed protective component, the cleaning cartridge 9 can scrape off tissue residues along the outer filter cartridge 8 to prevent tissue residues from blocking the filter holes of the filtering component. The designed installation component is beneficial to the rapid disassembly and assembly of the filtering component.

[0027] Specifically, the installation component also includes a threaded sleeve 3, which is coaxially connected to the end opening of the suction head 2. The connecting sleeve 7 and the threaded sleeve 3 are threadedly connected. The connecting sleeve 7 of the installation component is easy to disassemble and assemble, which is conducive to the rapid disassembly and assembly of the filter component.

[0028] Specifically, a sleeve hole 11 is opened on the bottom surface of the connecting sleeve 7, the outer filter cartridge 8 is connected and fixed to the bottom surface of the connecting sleeve 7 and covers the sleeve hole 11, the inner filter cartridge 4 extends into the interior of the outer filter cartridge 8 through the sleeve hole 11, and the outer edge of the top surface of the inner filter cartridge 4 is connected to a mounting ring 5, the top surface of the mounting ring 5 is in contact with the bottom surface of the threaded sleeve 3, and the bottom surface of the mounting ring 5 is in contact with the inner bottom surface of the connecting sleeve 7.

[0029] Specifically, sealing gaskets 6 are connected to the upper and lower surfaces of the installation ring 5 , and the sealing gaskets 6 enhance the sealing performance of the inner filter cartridge 4 after installation.

[0030] Specifically, a flexible support strip 10 is connected between the top surface of the cleaning cylinder 9 and the bottom surface of the connecting sleeve 7. The bottom surface of the cleaning cylinder 9 protrudes from the bottom surface of the outer filter cylinder 8, which is beneficial for the cleaning cylinder 9 to contact the outside world before the outer filter cylinder 8. The flexible support strip 10 can be deformed so as not to affect the sliding of the cleaning cylinder 9. The cleaning cylinder 9 moves along the outer filter cylinder 8 to scrape off tissue residues.

[0031] The utility model provides an extraction device for a pipette with a filtering function. The filter assembly is designed, wherein an inner filter cartridge 4 and an outer filter cartridge 8 cooperate with each other. Double filtration allows the suction head 2 to isolate tissue residues when absorbing tissue fluid, which is beneficial to the rapid extraction of tissue fluid and saves time. The conical design of the inner filter cartridge 4 significantly increases the surface area, which can effectively prevent the filter holes of the inner filter cartridge 4 from being blocked by tissue residues. The protective assembly is designed, wherein a cleaning cartridge 9 moves along the outer filter cartridge 8 to scrape off tissue residues, preventing tissue residues from blocking the filter holes of the filter assembly. The installation assembly is designed, which is beneficial to the rapid disassembly and assembly of the filter assembly.

[0032] 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 spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pipette extraction device with a filtering function, comprising a pipette (1) and a pipette tip (2) movably connected to the end of the pipette (1), characterized in that: The end opening of the suction head (2) is covered with a filter assembly, the end of the suction head (2) is provided with a protective assembly for cleaning the filter assembly, and a mounting assembly for connecting the filter assembly and the protective assembly; The filter assembly comprises an inner filter cartridge (4) and an outer filter cartridge (8), the inner filter cartridge (4) has a conical shape, the outer filter cartridge (8) covers the outside of the inner filter cartridge (4), and the pore size of the outer filter cartridge (8) is larger than the pore size of the inner filter cartridge (4); The protection component comprises a cleaning cylinder (9), wherein the cleaning cylinder (9) is movably sleeved on the outer surface of the outer filter cylinder (8); The mounting assembly comprises a connecting sleeve (7), the connecting sleeve (7) being detachably connected to the end of the suction head (2), and the filtering assembly and the protective assembly are both connected to the connecting sleeve (7).

2. The extraction device for a pipette with filtering function according to claim 1, characterized in that: The mounting assembly further comprises a threaded sleeve (3), the threaded sleeve (3) being coaxially connected to the end opening of the suction head (2), and the connecting sleeve (7) being threadedly connected to the threaded sleeve (3).

3. The extraction device for a pipette with filtering function according to claim 1, characterized in that: The bottom surface of the connecting sleeve (7) is provided with a sleeve hole (11); the outer filter cartridge (8) is connected and fixed to the bottom surface of the connecting sleeve (7) and covers the sleeve hole (11); and the inner filter cartridge (4) extends into the interior of the outer filter cartridge (8) through the sleeve hole (11).

4. The extraction device for a pipette with filtering function according to claim 3, characterized in that: The outer edge of the top surface of the inner filter cartridge (4) is connected to a mounting ring (5), the top surface of the mounting ring (5) is in contact with the bottom surface of the threaded sleeve (3), and the bottom surface of the mounting ring (5) is in contact with the inner bottom surface of the connecting sleeve (7).

5. The extraction device for a pipette with filtering function according to claim 4, characterized in that: The upper and lower surfaces of the mounting ring (5) are both connected with sealing gaskets (6).

6. The extraction device for a pipette with filtering function according to claim 1, characterized in that: A flexible support strip (10) is connected between the top surface of the cleaning cylinder (9) and the bottom surface of the connecting sleeve (7), and the bottom surface of the cleaning cylinder (9) protrudes from the bottom surface of the outer filter cylinder (8).

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