Plastic disc bevel angle joint and disposable cell bag containing same

Abstract

The utility model relates to a kind of plastic disc bevel angle joint and disposable cell bag containing it, plastic disc bevel angle joint includes welding disc, cannula connector, cannula connector is located in welding disc one side or both sides, and it is equipped with included angle between cannula connector and welding disc, form plastic disc bevel angle single connector or plastic disc bevel angle double connector.Disposable cell bag includes bag body and respectively welded in bottom and top plastic disc bevel angle single connector, double connector, plastic disc bevel angle single connector is connected with one of plastic disc bevel angle double connector by silica gel tube, and the other end in bag body inside of plastic disc bevel angle double connector is connected electrode connector by PVC pipe, and the end outside bag body is connected electrode optical fiber.The present application is equipped with the included angle between cannula connector and welding disc, completely solves the existing cell bag liquid outlet pipeline wrinkle, electrode optical fiber insertion difficult problem, guarantees liquid to be exported smoothly in cell culture process and environmental monitoring precision.

Description

Technical Field

[0001] This utility model relates to the field of cell culture bag technology, specifically to a plastic disc angled connector and a disposable cell bag containing the same. Background Technology

[0002] In the fields of biopharmaceuticals and cell culture, 500ml 2D disposable membrane cell bags are commonly used cell culture and processing containers, and their functionality is highly dependent on the stable operation of the outlet tubing and electrode tubing.

[0003] In the prior art, such cell bags are usually equipped with plastic disc right-angle double connectors, single connectors, etc. The liquid outlet pipeline needs to be connected to the silicone tube through the plastic disc right-angle double connector and the single connector, and the electrode pipeline needs to be connected to the PVC tube through the plastic disc right-angle double connector, so as to realize the core functions of liquid export and electrode fiber insertion respectively.

[0004] However, due to the limited internal height design of the intercepting membrane cell bag, the existing pipeline connection scheme has significant defects: after the right-angle connector is connected, wrinkles are easily generated during assembly and use due to the limited internal space of the bag; after the pipeline is wrinkled, the liquid outlet pipeline will be unable to output liquid normally due to channel blockage, and the electrode optical fiber will be difficult to insert smoothly into the electrode connector due to the obstruction formed by the wrinkles of the PVC pipe.

[0005] Therefore, there is an urgent need for a new connector design that can adapt to the internal space of small-volume cell bags and avoid tube folding. Utility Model Content

[0006] This utility model addresses the technical problems existing in the prior art by providing a plastic disc angled connector and a disposable cell bag containing the connector.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A plastic disc angled connector includes a welding disc and a tube connector. The tube connector is located on one or both sides of the welding disc, and there is an angle between the tube connector and the welding disc, forming a plastic disc angled single connector or a plastic disc angled double connector.

[0008] The beneficial effect of this utility model is that by setting the included angle between the insertion joint and the welding disc, the problem of pipe wrinkling caused by the height limitation of the bag body in the existing right-angle joint is fundamentally solved.

[0009] Furthermore, the insertion connector and the welding disc are integrally injection molded, eliminating the assembly gap of the split structure, avoiding the risk of leakage caused by the gap, and improving the sealing performance of the connector; at the same time, the integral molding process makes the overall structure of the connector stronger, able to withstand the insertion and extraction force during pipeline assembly and the pressure during use, reducing the possibility of connector breakage and damage; moreover, it simplifies the production process, eliminating the need for subsequent assembly steps, improving production efficiency and reducing manufacturing costs.

[0010] Furthermore, the insertion connector has a central through hole, and multiple ribs are evenly distributed circumferentially on its outer wall. The central through hole is the basic channel for liquid flow and electrode fiber insertion; the ribs on the outer wall, through their even circumferential arrangement, can form a multi-point interference fit with the inner wall of the silicone tube or PVC tube. Compared with a smooth outer wall, this significantly enhances the connection between the pipeline and the connector, effectively preventing the pipeline from falling off during assembly, handling, or use, and avoiding problems such as material leakage and production interruption caused by pipeline detachment.

[0011] Furthermore, the welding disc of the plastic disc angled single connector has a countersunk hole and a supporting boss on the surface of the disc away from the insertion connector. The countersunk hole and supporting boss can increase the distance between the bottom of the connector and the inner wall of the bag, avoiding the accumulation of impurities and blockage when liquid flows out of the bag.

[0012] Furthermore, the insertion connector is straight, and the angle A between it and the welding disc is 10°~80°, breaking the limitation of the fixed angle of the existing right-angle connector. When the height of the bag is different, the corresponding insertion connector angle can be designed to ensure that the pipeline is parallel to the bottom of the bag and completely avoid pipeline wrinkling.

[0013] Furthermore, the insertion connector is corner-shaped, comprising a connecting section and a connector section. The connecting section is perpendicular to the welding disc, and the angle B between the connecting section and the connector section is 90°-179°. This corner design better adapts to the complex internal spatial layout of containers such as disposable cell bags, avoiding difficulties in pipe installation or creases due to space constraints. The orientation of the connector section can be flexibly adjusted according to the internal height of the bag and the distribution of other components, ensuring smooth pipe connection.

[0014] A disposable cell bag includes a bag body, an electrode fiber, an electrode connector, a silicone tube, and a plastic disc angled connector as described above. A single plastic disc angled connector is welded to the inner bottom of the bag body, and two double plastic disc angled connectors are welded to the top of the bag body. One insertion connector of the double plastic disc angled connector extends inside the bag body, while the other insertion connector protrudes outside the bag body. The single plastic disc angled connector is connected to one of the double plastic disc angled connectors via a silicone tube. One end of the other double plastic disc angled connector, inside the bag body, is connected to the electrode connector via a PVC tube, and the other end, outside the bag body, is connected to the electrode fiber.

[0015] By employing a single connector at the bottom and a double connector at the top, along with the adaptable connection between the plastic disc angled connector and silicone or PVC tubing, the problems of wrinkled outlet tubing and difficult insertion of electrode fibers in existing cell bags are completely solved, ensuring smooth liquid outflow and accurate environmental monitoring during cell culture. Furthermore, the connectors are welded to the bag body via a welded disc, resulting in stronger sealing performance compared to traditional plug-in connections, thus avoiding the risk of contamination. Moreover, the components work collaboratively, eliminating the need for additional accessories, simplifying the overall structure of the cell bag, improving ease of use, and meeting the high-efficiency and reliable requirements of disposable consumables in biopharmaceutical and cell culture fields.

[0016] Furthermore, the two plastic discs with angled double connectors are symmetrically arranged along the central axis of the bag, making the force on the top of the cell bag more even and preventing the bag from tilting or deforming due to misalignment of the connectors, thus improving the stability of the cell bag during placement and use. At the same time, the symmetrical layout facilitates the symmetrical arrangement of pipelines, reducing tangling and interference between pipelines. This is both aesthetically pleasing and convenient for operators to perform operations such as liquid dispensing and electrode fiber insertion, improving the user experience and providing convenience for adaptation to automated production lines.

[0017] Furthermore, the PVC pipe includes an inclined section and a horizontal section. The inclined section connects to the plastic disc's angled double connector and is at the same angle as the insertion connector. The horizontal section connects to the electrode connector and is parallel to the bottom of the bag. The angle matching between the inclined section and the connector ensures a smooth transition without wrinkles when the PVC pipe connects to the connector, avoiding pipe bending caused by angle deviation. The horizontal section being parallel to the bottom of the bag keeps the PVC pipe flat, allowing the electrode fiber to be smoothly inserted along the horizontal section without obstruction or jamming. This structure completely eliminates the impact of PVC pipe wrinkles on the insertion of the electrode fiber, ensuring stable electrode monitoring function while reducing stress caused by PVC pipe wrinkles and extending the service life of the pipeline. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the planar structure of the plastic disc angled double connector of Embodiment 1 of this utility model; Figure 2 This is a schematic cross-sectional view of the plastic disc angled double connector of Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the planar structure of the plastic disc angled single connector of Embodiment 1 of this utility model; Figure 4 This is a cross-sectional structural diagram of the plastic disc angled single connector of Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the planar structure of the plastic disc angled single connector of Embodiment 2 of this utility model; Figure 6This is a schematic cross-sectional view of the single connector with an angled plastic disc in Embodiment 2 of this utility model. Figure 7 This is a schematic diagram of the structure of a disposable cell bag according to an embodiment of the present invention; The attached diagram lists the components represented by each number as follows: 1. Insertion tube connector, 2. Welding disc, 3. Angle A, 4. Through hole, 5. Rib, 6. Countersunk hole, 7. Support boss, 8. Bag body, 9. Electrode fiber, 10. Electrode connector, 11. Silicone tube, 12. Plastic disc angled single connector, 13. Plastic disc angled double connector, 14. PVC pipe, 15. Connecting section, 16. Connector section, 17. Angle B. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0022] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0023] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0024] Example 1 like Figures 1 to 4 As shown, this embodiment provides a plastic disc angled connector, including a welding disc 2 and a tube connector 1. The tube connector 1 is located on one or both sides of the welding disc 2, and an angle is formed between the tube connector 1 and the welding disc 2, forming a plastic disc angled single connector 12 or a plastic disc angled double connector 13. Specifically: The insertion connector 1 and the welding disc 2 are integrally injection molded, eliminating the assembly gap of the split structure, avoiding the risk of leakage caused by the gap, and improving the sealing performance of the connector. At the same time, the integral molding process makes the overall structure of the connector stronger, able to withstand the insertion and extraction force during pipeline assembly and the pressure during use, reducing the possibility of connector breakage and damage. Moreover, it simplifies the production process, eliminating the need for subsequent assembly steps, improving production efficiency and reducing manufacturing costs.

[0025] The insertion connector 1 has a central through hole 4, and multiple (e.g., 2-4) ribs 5 are evenly distributed circumferentially on its outer wall. The central through hole 4 is the basic channel for liquid flow and insertion of the electrode optical fiber 9; the ribs 5, through their even circumferential arrangement, can form a multi-point interference fit with the inner wall of the silicone tube 11 and PVC tube 14. Compared with a smooth outer wall, this significantly enhances the connection between the pipeline and the connector, effectively preventing the pipeline from falling off during assembly, handling, or use, and avoiding problems such as material leakage and production interruption caused by pipeline detachment. At the same time, the even circumferential arrangement can ensure uniform stress distribution and avoid local stress concentration in the pipeline. Different sizes of insertion connector 1 can be designed according to the required pipeline size. Commonly used connector sizes are 1 / 8 inch (3.18 mm), 3 / 16 inch (4.76 mm), and 1 / 4 inch (6.35 mm).

[0026] The welding disc 2 of the plastic disc angled single connector 12 has a countersunk hole 6 and a supporting boss 7 on the surface of the side away from the insertion connector 1. The countersunk hole 6 and the supporting boss 7 can increase the distance between the bottom of the connector and the inner wall of the bag, avoiding the accumulation of impurities and blockage when liquid flows out of the bag 8. Different sizes of welding disc 2 can be designed according to the size of the bag 8, ranging from φ30mm to φ60mm.

[0027] In this embodiment, the angle A3 between the insertion connector 1 and the welding disc 2 is 10°~80°, breaking the limitation of the fixed angle of the existing right-angle connector. When the height of the bag body 8 is different, a corresponding angle of the insertion connector 1 can be designed to ensure that the pipeline is parallel to the bottom of the bag body 8 and completely avoid pipeline wrinkling. Taking 60° as an example (e.g.) Figure 1 As shown), 60° is derived from the mainstream specifications of 500ml 2D disposable membrane cell bags. The 60° angle 3 can perfectly match the internal height of the bag body 8 of this specification, so that the silicone tube 11 and PVC tube 14 are in the optimal wrinkle-free state after connection, which not only ensures the stable flow of the liquid outlet pipeline, but also ensures that the electrode fiber 9 is inserted without obstruction.

[0028] This embodiment fundamentally solves the problem of pipe wrinkling caused by the height limitation of the small-volume 2D disposable bag body 8 due to the setting of the included angle 3 between the insertion connector 1 and the welding disc 2.

[0029] Example 2 It is basically the same as Example 1, except that: like Figure 5 , Figure 6 As shown, the insertion connector 1 is corner-shaped and includes a connecting section 15 and a connector section 16. The connecting section 15 is perpendicular to the welding disc 2, and the angle B17 between the connecting section 15 and the connector section 16 is 90°-179°, that is, the angle between the welding disc 2 and the insertion connector 1 (connector section 16) is 0°-89°.

[0030] The corner design better adapts to the complex internal spatial layout of containers such as disposable cell bags, avoiding difficulties in tubing installation or creases caused by space constraints. The orientation of the connector section can be flexibly adjusted according to the internal height of the bag and the distribution of other components, ensuring smooth tubing connections. It also facilitates the optimization of the layout of the liquid outlet or electrode tubing, resulting in a neater connection and reducing tangling and interference between tubing. Whether connecting silicone tubing to liquid outlet connectors or PVC tubing to electrode connectors, this corner structure ensures a more organized connection, facilitating assembly and maintenance by operators and enabling automated equipment to process the tubing. Furthermore, the angle range of 90°-179° allows for selection of the appropriate angle based on actual needs, meeting the requirements of cell bags of different specifications and application scenarios. This eliminates the need for separately designed connectors for different situations, expanding the applicability of the connectors and reducing usage costs and design complexity.

[0031] Example 3 like Figure 7 As shown, this embodiment provides a disposable cell bag, including a bag body 8, an electrode fiber 9, an electrode connector 10, a silicone tube 11, and a plastic disc angled connector as in Embodiment 1; a plastic disc angled single connector 12 is welded to the inner bottom of the bag body 8, and two plastic disc angled double connectors 13 are welded to the top of the bag body 8. One insertion connector 1 of the plastic disc angled double connector 13 extends into the bag body 8 (for connecting internal pipelines), and the other insertion connector 1 is exposed outside the bag body 8 (for connecting external devices); the plastic disc angled single connector 12 is connected to one of the plastic disc angled double connectors 13 through the silicone tube 11, and one end of the other plastic disc angled double connector 13 inside the bag body 8 is connected to the electrode connector 10 through a PVC tube 14, and the other end outside the bag body 8 is connected to the electrode fiber 9.

[0032] In this embodiment, the two plastic disc angled double connectors 13 are symmetrically arranged along the central axis of the bag body 8, making the force on the top of the cell bag more even and avoiding tilting or deformation of the bag body 8 due to connector eccentricity, thus improving the stability of the cell bag during placement and use. At the same time, the symmetrical layout facilitates the symmetrical arrangement of pipelines, reduces entanglement and interference between pipelines, and is both aesthetically pleasing and convenient for operators to perform operations such as liquid dispensing and electrode fiber 9 insertion, improving the user experience and providing convenience for adaptation to automated production lines.

[0033] In this embodiment, the PVC pipe 14 includes an inclined section and a horizontal section. The inclined section is connected to the plastic disc angled double connector 13 and is at the same angle as the insertion connector 1. The horizontal section is connected to the electrode connector 10 and is parallel to the bottom of the bag body 8. The angle matching between the inclined section and the connector ensures a smooth transition without wrinkles when the PVC pipe 14 is connected to the connector, avoiding pipe bending caused by angle deviation. The horizontal section being parallel to the bottom of the bag body 8 keeps the PVC pipe flat, allowing the electrode fiber 9 to be smoothly inserted along the horizontal section without obstruction or jamming. This structure completely eliminates the impact of wrinkles in the PVC pipe 14 on the insertion of the electrode fiber 9, ensuring stable electrode monitoring function, while reducing stress caused by wrinkles in the PVC pipe 14 and extending the service life of the pipeline.

[0034] This embodiment, through the layout of a single connector at the bottom and a double connector at the top, and the adaptive connection between the plastic disc angled connector and the silicone tube 11 and PVC tube 14, completely solves the problems of wrinkled outlet tubing and difficult insertion of electrode fiber 9 in existing cell bag systems, ensuring smooth liquid outflow and accurate environmental monitoring during cell culture. At the same time, the connector is welded to the bag body 8 via the welding disc 2, which provides stronger sealing performance compared to the traditional plug-in connection, avoiding the risk of contamination. Moreover, all components work together without the need for additional accessories, simplifying the overall structure of the cell bag, improving ease of use, and meeting the high-efficiency and reliable requirements of disposable consumables in the fields of biopharmaceuticals and cell culture.

[0035] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A plastic disc angled joint, characterized in that, It includes a welding disc and a tube connector. The tube connector is located on one or both sides of the welding disc, and there is an angle between the tube connector and the welding disc, forming a single plastic disc with an angled angle or a double plastic disc with an angled angle.

2. The plastic disc bevel joint according to claim 1, characterized in that, The insertion connector and the welding disc are integrally injection molded.

3. The plastic disc bevel joint according to claim 1, characterized in that, The insertion connector has a through hole in the center and multiple ribs evenly distributed along the circumference of the outer wall.

4. The plastic disc bevel joint according to claim 1, characterized in that, The welding disc of the plastic disc angled single connector has a countersunk hole and a support boss on the side surface away from the insertion connector.

5. A plastic disc angled joint according to claim 1, characterized in that, The insertion connector is straight, and the angle A between it and the welding disc is 10°~80°.

6. A plastic disc bevel joint according to claim 1, characterized in that, The cannula connector is corner-shaped and includes a connecting section and a connector section. The connecting section is perpendicular to the welding disc, and the angle B between the connecting section and the connector section is 90°-179°.

7. A disposable cell bag, characterized in that, Includes a bag body, electrode optical fiber, electrode connector, silicone tube, and a plastic disc angled connector as described in any one of claims 1-6; A single plastic disc angled connector is welded to the inner side of the bottom of the bag body, and two double plastic disc angled connectors are welded to the top of the bag body. One of the inserts of the double plastic disc angled connectors extends into the bag body, and the other insert is exposed outside the bag body. The single-ended plastic disc with an angled bevel is connected to one of the double-ended plastic discs with an angled bevel via a silicone tube. One end of the other double-ended plastic disc with an angled bevel is connected to the electrode connector inside the bag via a PVC tube, and the other end is connected to the electrode optical fiber outside the bag.

8. A disposable cell bag according to claim 7, characterized in that, The two plastic discs with angled double connectors are symmetrically arranged along the central axis of the bag.

9. A disposable cell bag according to claim 7, characterized in that, The PVC pipe includes an inclined section and a horizontal section. The inclined section is connected to the plastic disc at an angled double connector and is at the same angle as the insertion connector. The horizontal section is connected to the electrode connector and is parallel to the bottom of the bag.

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