Labor-saving bacteria filter tube and filter tube assembly

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a labor-saving bacteria filter tube and a filter tube assembly, the labor-saving bacteria filter tube comprises a barrel body, a cover body, a plunger assembly and a micron filter membrane, an inlet and an outlet are respectively formed in the head end and the tail end of the cylinder body; the cover body is configured to be detachably connected with the cylinder body, and the cover body is used for covering the inlet; the plunger assembly is configured to be in threaded connection with the cover body, so that the stroke of the plunger assembly is regulated and controlled through rotation; the micron filter membrane is arranged in the cylinder body; the plunger assembly is configured to be used for promoting to-be-filtered materials in the barrel to pass through the micron filter membrane and then be discharged from the outlet; a connecting clamping groove is formed in the tail end of the barrel, and the outlet is located in an area defined by the connecting clamping groove. The labor-saving bacteria filter tube adopts a rotating structure to push and press a solution, so that time and labor are saved, the experiment efficiency is improved, and the condition of hand ache caused by long-time extrusion of an operator is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a labor-saving bacterial filter tube and a filter tube assembly. Background Art

[0002] During the cell culture experiment, various solutions or culture media need to be prepared. These solutions may contain impurities such as solid particles, microbial residues, bacteria, etc., which will interfere with cell growth and affect the experimental results, so they need to be removed.

[0003] The smallest impurities are bacteria, which are usually between 0.5 and 5 microns in size. If they cannot be removed, they will usually contaminate cells. Therefore, a 0.22-micron filter is usually used in combination with a syringe to complete the filtration sterilization work. However, this filtration sterilization solution is cumbersome to operate. It is necessary to use a syringe to absorb the solution, pull out the needle, connect the 0.22-micron filter, and push the push rod to filter so that the filtrate enters the filter tube and centrifuge tube. During use, because the inner and outer surfaces of the syringe are smooth and the push handle and tube wings are small, when encountering large resistance, it is necessary to apply pressure on the push handle by hand to maintain pressure so that the water sample can flow through the filter. When the time is long or there are many samples, long-term force application can easily cause problems such as sore hands and hand pain for the experimenter, which is time-consuming and laborious. Installing the filter before filtering is cumbersome and prone to dripping, which can contaminate the cell clean bench. It is not convenient to filter bacterial solutions or culture media, and it will affect the strict requirements of cell experiments. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a labor-saving bacterial filter tube, which adopts a rotating structure to push the solution, saving time and labor, improving experimental efficiency, and preventing the operator from getting hand soreness due to long-term squeezing.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] In a third aspect, a labor-saving bacterial filter tube is provided, comprising: a cylinder, a cover, a plunger assembly and a micron filter membrane.

[0007] The first end and the tail end of the cylinder are respectively provided with an inlet and an outlet.

[0008] The cover is configured to be detachably connected to the cylinder, and the cover is used to cover the inlet.

[0009] The plunger assembly is configured to be threadedly connected to the cover body so that the stroke of the plunger assembly can be adjusted by rotation.

[0010] The micron filter membrane is arranged in the cylinder.

[0011] The plunger assembly is configured to force the material to be filtered in the cylinder to pass through the micron filter membrane and then be discharged from the outlet.

[0012] A connecting slot is provided at the end of the cylinder, and the outlet is located in an area surrounded by the connecting slot, and the connecting slot is used to be connected to a centrifuge tube.

[0013] In the labor-saving bacterial filtration tube provided in at least one embodiment of the present disclosure, the cylinder includes: a straight tube section and a tapered tube section.

[0014] The tapered pipe section is configured to be integral with the straight pipe section.

[0015] The diameter of the tapered pipe section gradually decreases in a direction away from the inlet.

[0016] In the labor-saving bacterial filtration tube provided by at least one embodiment of the present disclosure, the micron filter membrane is located above the conical tube section.

[0017] In the labor-saving bacterial filtration tube provided in at least one embodiment of the present disclosure, the plunger assembly includes: a threaded rod and a piston.

[0018] The piston is configured to be fixedly connected to one end of the threaded rod.

[0019] The central axes of the piston, threaded rod, cylinder, cover and connecting slot coincide with each other.

[0020] In the labor-saving bacterial filtration tube provided in at least one embodiment of the present disclosure, a screw hole or a nut matching with the threaded rod is provided in the middle of the cover body.

[0021] The cover body and the threaded rod are connected via the screw holes or nuts.

[0022] In the labor-saving bacterial filtration tube provided in at least one embodiment of the present disclosure, a handle is provided at the other end of the threaded rod, and the handle is fixedly connected to the threaded rod.

[0023] In the labor-saving bacterial filtration tube provided in at least one embodiment of the present disclosure, the pore size of the micron filter membrane is 0.22 microns.

[0024] In the labor-saving bacterial filtration tube provided in at least one embodiment of the present disclosure, the cylinder and the cover are both transparent.

[0025] In a second aspect, a filter tube assembly is provided, comprising a test tube and the above-mentioned labor-saving bacterial filter tube.

[0026] Wherein, the tube mouth of the test tube is inserted into the connecting slot.

[0027] In a third aspect, a filter tube assembly is provided, comprising a centrifuge tube and the above-mentioned labor-saving bacterial filter tube.

[0028] Wherein, the tube mouth of the centrifuge tube is inserted into the connecting slot.

[0029] The beneficial effects of the utility model are:

[0030] Traditional filter syringes require the needle to be inserted to suck the liquid to be filtered multiple times, and there is a problem that the needle cannot suck the bottom of the container, resulting in incomplete suction of the liquid to be filtered. In order to solve these problems, the utility model is designed with a detachable cover. After the bottle cap is removed, the bacterial solution can be poured directly into the barrel, which is more convenient.

[0031] The bacterial solution is squeezed in a spiral propulsion manner, which saves time and effort, and the plunger assembly will not be pushed back due to pressure when the cylinder is under pressure.

[0032] By being equipped with a connecting slot, the filter tube and the centrifuge tube can be connected, so that the centrifuge tube will not slip during filtration and has better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A view of the labor-saving bacterial filter tube.

[0035] Figure 2 Schematic diagram of the internal structure of the bacterial filter tube to save effort.

[0036] Figure 3 A three-dimensional diagram of a labor-saving bacterial filter tube.

[0037] In the picture:

[0038] 10. Cylinder; 11. Connecting slot; 12. Straight pipe section; 13. Tapered pipe section;

[0039] 20. Cover; 21. Nut;

[0040] 30. Plunger assembly; 31. Threaded rod; 32. Piston; 33. Handle;

[0041] 40, micron filter membrane. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments. Obviously, the described embodiment is only a sub-embodiment, rather than a complete embodiment.

[0043] The inner and outer surfaces of the syringe barrel of the current disposable syringe filter are smooth, and the push handle and barrel wings are small. When encountering large resistance, it is necessary to continuously apply pressure on the push handle by hand to maintain pressure so that the water sample can flow through the filter. When the time is long or there are many samples, long-term force application can easily cause problems such as sore and painful hands of the experimenter; the filter screen must be installed before filtering, which is cumbersome to operate, prone to dripping, and prone to environmental pollution. It is not convenient for filtering bacterial solutions in a simple, efficient and time-saving manner, and will affect strict cell experiments. For this reason, a labor-saving bacterial filter tube is proposed in the embodiment, which uses a spiral propulsion method to extrude the bacterial solution. When there is pressure in the tube, the extrusion push rod will not be pushed back due to pressure, saving time and effort.

[0044] When in use, the outlet is provided with a connecting slot, which can be directly connected to components such as a centrifuge tube through the connecting slot, avoiding the mismatch between the centrifuge tube outlet and the filter tube outlet during filtration, resulting in the risk of liquid flowing out and causing contamination.

[0045] Example 1

[0046] like Figures 1 to 3 As shown, this embodiment provides a labor-saving bacterial filtration tube, which includes a barrel 10 , a cover 20 , a plunger assembly 30 and a micron filter membrane 40 .

[0047] Specifically, the cylinder 10 is provided with an inlet and an outlet at the head end and the tail end respectively, and the micron filter membrane 40 is disposed in the cylinder 10 .

[0048] Specifically, the cover 20 is configured to be threadedly connected to the cylinder 10 , and the cover 20 is used to cover the inlet.

[0049] Specifically, the plunger assembly 30 is configured to be threadedly connected to the cover body 20. The stroke of the plunger assembly 30 is regulated by rotation. By rotating the plunger assembly 30, the material to be filtered in the cylinder 10 can be squeezed, so that the material to be filtered passes through the micron filter membrane 40 and is discharged from the outlet.

[0050] Specifically, a connecting slot 11 is provided at the end of the cylinder 10 , and the outlet is located in an area surrounded by the connecting slot 11 .

[0051] In this embodiment, the cylinder 10 includes a straight pipe section 12 and a tapered pipe section 13 .

[0052] Specifically, the tapered pipe section 13 is configured to be integrated with the straight pipe section 12 , and the diameter of the tapered pipe section 13 gradually decreases in a direction away from the inlet.

[0053] In this embodiment, the micron filter membrane 40 is located above the tapered pipe section 13 , and the micron filter membrane 40 is fixedly connected to the straight pipe section 12 .

[0054] Illustratively, the micron filter membrane 40 is bonded to the straight pipe section 12 .

[0055] Specifically, the pore size of the micron filter membrane 40 is 0.22 microns.

[0056] In this embodiment, the plunger assembly 30 includes a threaded rod 31 and a piston 32 .

[0057] Specifically, the piston 32 is configured to be fixedly connected to one end of the threaded rod 31 , and the central axes of the piston 32 , the threaded rod 31 , the cylinder 10 , the cover 20 and the connecting slot 11 coincide with each other.

[0058] Specifically, a nut 21 that matches the threaded rod 31 is provided in the middle of the cover body 20 , and the cover body 20 and the threaded rod 31 are connected by the nut 21 .

[0059] For example, the thread on the threaded rod 31 is a rectangular external thread, and the thread in the nut 21 is a rectangular internal thread. The rectangular thread has high transmission efficiency.

[0060] In this embodiment, a handle 33 is provided at the other end of the threaded rod 31 , and the handle 33 is fixedly connected to the threaded rod 31 . The provision of the handle 33 makes it convenient for the user to twist the threaded rod 31 , which is very convenient.

[0061] In this embodiment, the barrel 10 and the cover 20 are both transparent. The transparent design allows the user to easily observe the volume of the solution inside the barrel 10 , which is very convenient.

[0062] Example 2

[0063] In this embodiment (not shown), a labor-saving bacterial filter tube is provided, which differs from embodiment 1 in that a screw hole matching the threaded rod is provided in the middle of the cover body, and the cover body and the threaded rod are connected through the screw hole.

[0064] In addition, the present invention also provides a filter tube assembly, including a test tube and the labor-saving bacterial filter tube in any of the above embodiments.

[0065] The tube mouth of the test tube is inserted into the connecting slot 11.

[0066] In addition, the present invention also provides a filter tube assembly, including a centrifuge tube and the labor-saving bacterial filter tube in any of the above embodiments.

[0067] The mouth of the centrifuge tube is inserted into the connecting slot 11 .

[0068] Although the embodiments of the present application have been shown and described above, the scope of protection of the present invention is not limited thereto, and any changes or substitutions that are not conceivable through creative work should be included in the scope of protection of the present invention; unless expressly stated, any elements, actions or instructions used in this document should not be interpreted as critical or necessary.

Claims

1. A labor-saving bacterial filter tube, characterized in that: include: The cylinder is provided with an inlet and an outlet at the head end and the tail end respectively; a cover body configured to be detachably connected to the cylinder body, the cover body being used to cover the inlet; a plunger assembly configured to be threadedly connected to the cover body so that the stroke of the plunger assembly can be adjusted by rotation; as well as A micron filter membrane is disposed in the cylinder; Wherein, the plunger assembly is configured to force the filtered material in the cylinder to pass through the micron filter membrane and then be discharged from the outlet; Wherein, a connecting slot is provided at the end of the cylinder, the outlet is located in the area surrounded by the connecting slot, and the connecting slot is used to connect with the centrifuge tube.

2. The labor-saving bacterial filter tube according to claim 1, characterized in that: The cylinder comprises: straight pipe sections; and a tapered pipe section configured to be integral with the straight pipe section; Wherein, the diameter of the tapered pipe section gradually decreases in a direction away from the inlet.

3. The labor-saving bacterial filter tube according to claim 2, characterized in that: The micron filter membrane is located above the tapered tube section.

4. The labor-saving bacterial filter tube according to claim 1, characterized in that: The plunger assembly comprises: threaded rod; and a piston configured to be fixedly connected to one end of the threaded rod; Wherein, the central axes of the piston, threaded rod, cylinder, cover and connecting slot coincide with each other.

5. The labor-saving bacterial filtration tube according to claim 4, characterized in that: The middle part of the cover body is provided with a screw hole or a nut matched with the threaded rod; The cover body and the threaded rod are connected via the screw holes or nuts.

6. The labor-saving bacterial filtration tube according to claim 4, characterized in that: A handle is provided at the other end of the threaded rod, and the handle is fixedly connected to the threaded rod.

7. The labor-saving bacterial filtration tube according to claim 1, characterized in that: The pore size of the micron filter membrane is 0.22 microns.

8. The labor-saving bacterial filtration tube according to claim 1, characterized in that: The cylinder and the cover are both transparent.

9. A filter tube assembly comprising a test tube, characterized in that: Also includes a labor-saving bacterial filter tube as described in any one of claims 1-8; Wherein, the tube mouth of the test tube is inserted into the connecting slot.

10. A filter tube assembly comprising a centrifuge tube, characterized in that: Also includes a labor-saving bacterial filter tube as described in any one of claims 1-8; Wherein, the tube mouth of the centrifuge tube is inserted into the connecting slot.

Images