Exhaust needle structure for cell filtration

Abstract

The utility model discloses a kind of waste needle structures for cell filtration, it is related to medical instrument technical field, including waste needle pipe, waste needle head, waste one-way valve and cell column filter, the utility model is when using, first, medical staff removes needle cover from the needle cover clamping groove on needle sealing cover, by guiding cell into cell column filter, cell column filter removes large particle material and suspended solids of cell liquid, completes primary filtration, the waste needle head of waste needle pipe is inserted into cell column filter, by gravity, cell after primary filtration enters waste needle pipe, when waste liquid passes through waste needle pipe, inside pipe head, by the filter membrane supported by filter piece support Secondary retention cell, impurities and other solid components, allow waste liquid to pass through, realize solid-liquid separation;Then, waste one-way valve is installed on the outer wall surface of waste pipe upper side through, by internal rubber valve flap valve structure, ensure that waste liquid unidirectional flow.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a waste removal needle structure for cell filtration. Background Technology

[0002] In processes such as cell culture, blood component separation, and biopharmaceutical manufacturing, it is necessary to filter samples containing cells to separate the target cells and remove waste liquid. However, most current cell filtration waste removal devices rely on a single-layer filter membrane, resulting in low filtration efficiency and inability to effectively retain cells, leading to the loss of the target sample. Therefore, those skilled in the art have provided a waste removal needle structure for cell filtration to solve the problems mentioned in the background art. Utility Model Content

[0003] The purpose of this invention is to provide a waste discharge needle structure for cell filtration to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A waste discharge needle structure for cell filtration includes a waste discharge needle tube, a waste discharge needle head, a waste discharge one-way valve, and a cell column membrane filter. A tube head is movably connected to the middle of the top of the waste discharge needle tube. A needle head sealing cap is threadedly connected to the upper side of the outer wall surface of the tube head. The waste discharge needle head is fixedly connected to the middle of the top of the needle head sealing cap. A filter plate support is movably connected to the lower side of the inner wall surface of the tube head. A filter membrane is fixedly connected to the upper side of the inner wall surface of the filter plate support. A waste discharge tube is movably connected to the middle of the end of the waste discharge needle tube. A waste discharge one-way valve is movably connected to the upper side of the outer wall surface of the waste discharge tube. A waste discharge collection bag is threadedly connected to the lower side of the inner wall surface of the waste discharge tube.

[0006] As a further embodiment of this utility model: the top periphery of the needle sealing cap is provided with an anti-needle cap groove.

[0007] As a further improvement of this utility model, the inner wall surface of the anti-needle cover groove is movably connected to the outer surface of the waste discharge needle.

[0008] As a further improvement of this utility model, a sealing ring is movably connected to the inner wall surface of the through-hole at the front end of the waste discharge check valve.

[0009] As a further improvement of this utility model, the inner wall surface of the sealing ring is movably connected to the valve flipping rod.

[0010] As a further improvement of this utility model, the outer wall surface of the valve flipping rod is movably connected to the valve inside the waste discharge pipe on the rear side.

[0011] As a further improvement of this utility model, a scale is provided on the lower right side of the front end of both the waste discharge needle and the waste discharge collection bag.

[0012] As a further embodiment of this utility model: the top center of the needle sealing cap is movably connected to the cell column membrane filter on the outer surface of the waste discharge needle.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Medical staff remove the needle cap from the needle cap slot on the needle seal cap. Cells are introduced into a cell column membrane filter. The cell column membrane filter removes large particles and suspended solids from the cell fluid, completing the initial filtration. The waste discharge needle of the waste discharge syringe is inserted into the cell column membrane filter. Under gravity, the cells that have been initially filtered enter the waste discharge syringe. When the waste liquid passes through the waste discharge syringe, the filter membrane inside the syringe head, supported by the filter plate support, retains cells, impurities, and other solid components for a second time, allowing the waste liquid to pass through, thus achieving solid-liquid separation. The filter membrane accurately retains cells or impurities, preventing the loss of the target sample, while ensuring rapid discharge of waste liquid. The combination of the needle cap slot and the needle cap prevents needle exposure, reducing the risk of biological infection and physical damage.

[0015] 2. The waste discharge check valve is installed at the upper penetration point on the outer wall surface of the waste discharge pipe. Through the internal rubber valve disc structure, it ensures one-way flow of waste liquid. Medical staff turn the valve flip rod to flip the valve, which drives the valve to open, and the waste liquid flows into the collection bag through the waste discharge pipe. When filtering or pausing, the valve is closed to block the flow path. The check valve prevents backflow and avoids waste liquid from contaminating the sample, ensuring the accuracy of scenarios such as cell culture and blood filtration. The flip rod can flexibly control the start and stop of waste discharge, adapting to different operating rhythms of intermittent or continuous waste discharge. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a waste removal needle for cell filtration.

[0017] Figure 2 This is a schematic diagram of the overall structure of a waste discharge needle in a cell filtration waste discharge needle structure.

[0018] Figure 3 This is a schematic diagram of a waste removal needle structure for cell filtration, viewed from below during use.

[0019] Figure 4 This is a planar schematic diagram of the internal view of the waste discharge needle in a cell filtration waste discharge needle structure.

[0020] Figure 5 This is a magnified structural diagram of point A in a waste removal needle structure for cell filtration.

[0021] In the diagram: 1- Waste discharge needle, 2- Tube head, 3- Needle sealing cap, 4- Anti-needle cap slot, 5- Waste discharge needle, 6- Anti-needle cap, 7- Filter plate support, 8- Filter membrane, 9- Waste discharge check valve, 10- Sealing ring, 11- Valve flip rod, 12- Valve, 13- Waste discharge pipe, 14- Waste discharge collection bag, 15- Ruler, 16- Cell column membrane filter. Detailed Implementation

[0022] Please see Figures 1-5 In this embodiment of the present invention, a waste discharge needle structure for cell filtration includes a waste discharge needle tube 1, a tube head 2, a needle head sealing cap 3, a needle-proof cap groove 4, a waste discharge needle 5, a needle-proof cap 6, a filter plate support 7, a filter membrane 8, a waste discharge one-way valve 9, a sealing ring 10, a valve flipping rod 11, a valve 12, a waste discharge pipe 13, a waste discharge collection bag 14, a scale 15, and a cell column type filter membrane filter 16. The tube head 2 is movably connected to the middle of the top end of the waste discharge needle tube 1. The needle head sealing cap 3 is movably connected to the upper side of the outer wall surface of the tube head 2 via a thread. The waste discharge needle 5 is fixedly connected to the middle of the top of the needle head sealing cap 3. The filter plate support 7 is movably connected to the lower side of the inner wall surface of the tube head 2. The filter membrane 8 is fixedly connected to the upper side of the inner wall surface of the filter plate support 7 via a cutout. The waste discharge pipe 13 is movably connected to the middle of the end of the waste discharge needle tube 1. A waste discharge check valve 9 is movably connected to the upper part of the outer wall surface of the waste discharge pipe 13. A waste discharge collection bag 14 is movably connected to the lower part of the inner wall surface of the waste discharge pipe 13. A needle-proof cover groove 4 is provided around the top periphery of the needle sealing cover 3. A needle-proof cover 6 is movably connected to the outer surface of the waste discharge needle 5 on the inner wall surface of the needle-proof cover groove 4. A sealing ring 10 is movably connected to the inner wall surface of the middle part of the front end of the waste discharge check valve 9. A valve flipping rod 11 is movably connected to the inner wall surface of the sealing ring 10. A valve 12 is movably connected to the rear side of the outer wall surface of the valve flipping rod 11 inside the waste discharge pipe 13. A scale 15 is provided on the lower right side of the front end of both the waste discharge needle pipe 1 and the waste discharge collection bag 14. A cell column membrane filter 16 is movably connected to the middle of the top of the needle sealing cover 3 on the outer surface of the waste discharge needle 5.

[0023] The working principle of this utility model is as follows: In use, firstly, medical personnel remove the needle cap 6 from the needle cap slot 4 on the needle sealing cap 3. Cells are then introduced into the cell column membrane filter 16, which removes large particles and suspended solids from the cell fluid, completing the initial filtration. Next, the waste discharge needle 5 of the waste discharge tube 1 is inserted into the cell column membrane filter 16. Through gravity, the cells, having undergone the initial filtration, enter the waste discharge tube 1. As the waste fluid passes through the waste discharge tube 1, the filter membrane 8, supported by the filter plate support 7, further traps cells, impurities, and other solid components inside the tube head 2, allowing the waste fluid to pass through, thus achieving solid-liquid separation. Then, a one-way valve 9 is installed on the outer wall surface of the waste discharge tube 13 at the penetration point. Through its internal rubber valve flap structure, it ensures unidirectional flow of the waste fluid. The medical staff turns the valve flip lever 11 to flip the valve 12, which opens the valve and allows the waste liquid to flow into the collection bag 14 through the waste discharge pipe 13. When filtering or pausing, the valve 12 is closed to block the flow path. The waste discharge pipe 13 connects the waste discharge needle 1 and the collection bag 14 to form a closed waste discharge channel. The collection bag is a disposable container that collects the filtered waste liquid and can be easily replaced when it is full. When not in use, the waste discharge needle 5 is put on its outer surface and inserted into the needle cover groove 4 of the needle seal 3 to prevent dust and microorganisms from contaminating the waste discharge needle 5 and to avoid accidental puncture of medical staff by the waste discharge needle 5. The scale 15 is marked on the lower right side of the front end of the waste discharge needle 1 and the waste discharge collection bag 14 to quantify the liquid level progress inside the waste discharge needle 1 and the waste discharge collection bag 14, helping medical staff to determine whether the collection bag needs to be replaced or the filter membrane needs to be cleaned.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waste discharge needle structure for cell filtration, comprising a waste discharge needle tube (1), a waste discharge needle head (5), a waste discharge one-way valve (9), and a cell column membrane filter (16), characterized in that, The waste discharge needle (1) is movably connected to the tube head (2) at the middle of the top end. The tube head (2) is threadedly connected to the upper side of the outer wall surface of the tube head (2). The waste discharge needle (5) is fixedly connected to the middle of the top of the tube head (3). The filter support (7) is movably connected to the lower side of the inner wall surface of the tube head (2). The filter membrane (8) is fixedly connected to the upper side of the inner wall surface of the filter support (7). The waste discharge tube (13) is movably connected to the middle of the end end of the waste discharge needle (1). The waste discharge one-way valve (9) is movably connected to the upper side of the outer wall surface of the waste discharge tube (13). The waste discharge collection bag (14) is threadedly connected to the lower side of the inner wall surface of the waste discharge tube (13).

2. The waste discharge needle structure for cell filtration according to claim 1, characterized in that, The needle sealing cap (3) has a needle-proof cap groove (4) around its top periphery.

3. The waste discharge needle structure for cell filtration according to claim 2, characterized in that, The inner wall surface of the anti-needle cover groove (4) is movably connected to the anti-needle cover (6) on the outer surface of the waste discharge needle (5).

4. The waste discharge needle structure for cell filtration according to claim 1, characterized in that, The inner wall surface of the front middle through-hole of the waste discharge check valve (9) is movablely connected to the sealing ring (10).

5. The waste discharge needle structure for cell filtration according to claim 4, characterized in that, The valve flipping rod (11) is movably connected to the inner wall surface of the sealing ring (10).

6. The waste discharge needle structure for cell filtration according to claim 5, characterized in that, The valve flipping rod (11) is located on the rear side of the outer wall surface and is movably connected to the valve (12) inside the waste discharge pipe (13).

7. The waste discharge needle structure for cell filtration according to claim 1, characterized in that, The waste discharge syringe (1) and the waste discharge collection bag (14) are both equipped with a scale (15) on the lower right side of the front end.

8. The waste discharge needle structure for cell filtration according to claim 1, characterized in that, The top center of the needle sealing cap (3) is located on the outer surface of the waste discharge needle (5) and is movably connected to the cell column membrane filter (16).

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