Multi-connected disposable waste liquid bag device

Abstract

The utility model discloses a disposable waste liquid bag device capable of being connected in multiple modes. The disposable waste liquid bag device comprises a negative pressure source and at least two liquid storage bottles. Liquid storage bags are arranged in the liquid storage bottles, the negative pressure source is communicated with the liquid storage bags and cavities between the liquid storage bags and the liquid storage bottles through pipelines, and anti-overflow valves are arranged on the pipelines between the negative pressure source and the liquid storage bags and used for preventing liquid in the liquid storage bags from flowing into the negative pressure source. Wherein one liquid storage bag is respectively connected with a user through a pipeline and is sequentially communicated with the interiors of the other liquid storage bags in series one by one, the automatic circulation of waste liquid in the plurality of liquid storage bottles can be realized through the plurality of liquid storage bags which are communicated in series and are all arranged in the liquid storage bottles, and when the waste liquid reaches a certain amount, the automatic circulation of the waste liquid in the plurality of liquid storage bottles can be realized. And the liquid storage bottle can be discarded without cleaning, so that the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical waste liquid treatment technology, specifically to a multi-unit disposable waste liquid bag device. Background Technology

[0002] With increasing health awareness, medical devices are becoming more widely used, among which suction equipment is a common hospital tool. Suction devices mainly include electric multi-functional negative pressure suction devices and simple manual suction devices. The operating end needs to be connected to a suction tube or sponge suction tube for use. Electric suction devices are generally more common, with both a power switch and a manual switch. They utilize negative pressure for suctioning and oral care, and are simple and easy to learn. They are used for routine suctioning of wounded and sick personnel, tracheotomies, and other procedures, and are suitable for military combat medical care as well as for timely suctioning of respiratory mucus or vomit in hospitals or homes.

[0003] Traditional suction devices use a reservoir bottle to temporarily store suctioned sputum. After suctioning, the sputum needs to be processed as soon as possible, and the reservoir bottle needs to be disinfected. To address this issue, existing technologies, such as patent application number CN201921226023.9, disclose a medical suction and processing device. This device uses a reservoir bag, allowing the sputum to be directly sucked into the bag, avoiding direct contact between the sputum and the reservoir bottle. This facilitates the recycling and disposal of the sputum and the cleaning of the waste bottle.

[0004] However, in practice, the suction device reservoir provided in the above technical solution still has certain limitations, as follows:

[0005] Because the amount of waste fluid generated during treatment is uncertain (for example, if there is a lot of fluid in the patient's body), if a large amount of waste fluid is extracted, the storage bottle will be filled in a short time. At this point, in order to continue the waste fluid extraction, the treatment will be paused, the waste fluid in the bottle will be poured out, and the bottle will be replaced. This increases the time of the entire treatment process. In addition, the bottle needs to be cleaned and disinfected after the treatment for the next treatment, which is quite troublesome.

[0006] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0007] This invention provides a multi-connection disposable waste liquid bag device, which aims to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a multi-connectable disposable waste liquid bag device, comprising a negative pressure source and at least two liquid storage bottles; each liquid storage bottle is provided with a liquid storage bag, and the negative pressure source is connected to each of the liquid storage bags and the cavity between the liquid storage bags and the liquid storage bottles through pipelines; an anti-overflow valve is provided on the pipeline between the negative pressure source and the liquid storage bags to prevent liquid in the liquid storage bags from flowing into the negative pressure source; wherein, one of the liquid storage bags is connected to the user through pipelines and is connected in series with the interiors of the other liquid storage bags one by one.

[0009] In the above scheme, in actual operation, it can be directly presented as user-liquid storage bag-negative pressure source, which means that the three can be directly connected in series. In this way, when the last liquid storage bag is being pumped, all the other liquid storage bags will be operated simultaneously.

[0010] A further technical solution includes: each of the liquid storage bottles having a negative pressure port communicating with the inner cavity of the liquid storage bag, the negative pressure port being connected to the negative pressure source via a pipeline through the anti-overflow valve; each of the liquid storage bottles having an interlayer port communicating with the cavity between the liquid storage bag and the liquid storage bottle, the interlayer port being connected to the negative pressure source via a pipeline; each of the liquid storage bottles also having an inlet communicating with the inner cavity of the liquid storage bag, and each of the liquid storage bottles also having a series port communicating with the inner cavity of the liquid storage bag; the liquid storage bottles include a first liquid storage bottle and a second liquid storage bottle; the inlet of the first liquid storage bottle is connected to the user via a pipeline, and the series port of the first liquid storage bottle is connected to the inlet of the second liquid storage bottle via a pipeline, while the series port of the second liquid storage bottle is either closed or connected to the inlet of a subsequent liquid storage bottle.

[0011] Each of the liquid storage bottles is provided with or connected to a one-way valve inside the liquid inlet, and the one-way valve conducts in a one-way direction from the outside to the inner cavity of the liquid storage bag.

[0012] In the above solution, the opening of the liquid storage bag is positioned and connected to the cap. Generally, a heat-sealing method is chosen to seal the connection. The liquid storage bag is made of soft material, similar to a high-quality plastic bag. After heat-sealing, it will permanently adhere to the cap. When replacing it, the cap and bag will be discarded together.

[0013] In the above scheme, at least two liquid storage bottles are provided, two of which can form a series structure. Therefore, by analogy, multiple liquid storage bottles can form a series structure.

[0014] In the above solution, the anti-overflow valve is a disposable plastic part that easily absorbs water and expands. It is installed into the negative pressure port of the cover by the ribs. Once the liquid level is reached, the sealing work can be completed directly. It is easy to install and has high reliability.

[0015] In the above scheme, the depth of the negative pressure port inside the bag is higher than the depth of the liquid inlet inside the bag. This setting is to achieve the function of preventing overflow.

[0016] In a further technical solution, the liquid storage bottle consists of a bottle body and a cap. The cap is sealed on the bottle mouth of the bottle body, and the negative pressure port, the series port, and the liquid inlet are all located on the cap.

[0017] In a further technical solution, the anti-overflow valve is located inside the negative pressure port, and the one-way valve is located inside the liquid inlet.

[0018] In a further technical solution, the interlayer opening is a channel located inside the cap body, with one end leading to the cavity between the liquid storage bag and the liquid storage bottle, and the other end connected to the negative pressure port.

[0019] A further technical solution includes an outer negative pressure column disposed on the outer side of the cover body and an inner negative pressure cylinder disposed on the inner side of the cover body. The inner negative pressure cylinder is coaxial with and connected to the outer negative pressure column. The inner diameter of the inner negative pressure cylinder is larger than the inner diameter of the outer negative pressure column. The anti-overflow valve is positioned and connected inside the inner negative pressure cylinder.

[0020] With the above design, the anti-overflow valve will only block the inner negative pressure cylinder, but will not enter the outer negative pressure column.

[0021] In a further technical solution, the inner sidewall of the inner negative pressure cylinder is provided with multiple clamping ribs in the circumferential direction. The clamping ribs are arranged along the axial direction of the inner negative pressure cylinder, and all the clamping ribs are combined to form a ring structure. The ring structure is interference-fitted with the anti-overflow valve.

[0022] The above design secures the anti-overflow valve within the annular structure. When not in contact with liquid, the anti-overflow valve does not expand. At this time, the annular structure exists between the anti-overflow valve and the inner wall of the inner negative pressure cylinder with a certain gap. When the negative pressure port draws liquid, it also provides a certain suction force to the inside of the storage bag through this gap, allowing the liquid to more fully contact the series port (the reason for contact with the series port is that multiple storage bottles are connected in series; if there is only one storage bottle, this is not necessary). If this suction force is not provided, the storage bag will expand to a certain extent and then stop expanding. In other words, its internal pressure is fixed, and the amount of liquid drawn may not be sufficient to fully contact the series port.

[0023] A further technical solution is that the liquid inlet includes an outer liquid inlet column disposed on the outer side of the cover body and an inner liquid inlet cylinder disposed on the inner side of the cover body. The inner liquid inlet cylinder is coaxial with and communicates with the outer liquid inlet column, and the one-way valve is disposed inside the inner liquid inlet cylinder.

[0024] A valve ring is disposed at the end of the inner inlet cylinder to limit the one-way valve.

[0025] The above design allows the pumped liquid to be limited by a one-way valve, meaning that the liquid can only be pumped into the storage bag in one direction to prevent backflow.

[0026] In a further technical solution, the one-way valve includes a valve core, a valve core outer ring, and a connecting part. The valve core outer ring is located on the outer periphery of the valve core, and there is a movable gap between the valve core outer ring and the valve core. The connecting part connects the valve core and the valve core outer ring.

[0027] The outer ring of the valve core is coaxially disposed inside the inner liquid inlet cylinder, and the outer ring of the valve core abuts against the end of the valve buckle sleeve;

[0028] The inner wall of the inner liquid inlet cylinder is provided with a limiting ring groove for axially limiting the valve ring sleeve.

[0029] With the above design, the one-way valve can be limited in use by the valve retaining ring fixed in the limiting ring groove, because this fixing method has better fixation than the current bonding method.

[0030] A further technical solution is that the diameter of the valve core is smaller than the inner diameter of the valve retaining ring; this is configured so that the valve core will not be blocked by the valve retaining ring during operation. The diameter of the valve core is larger than the inner diameter of the outer liquid inlet column; this is configured so that the valve core can block the outer liquid inlet column.

[0031] A further technical solution is that the outer surface of the cover has a recessed portion, so that the inner surface of the cover forms a boss, and the negative pressure port, the series port and the liquid inlet are all disposed in the recessed portion; on the inner surface of the cover, from the boss to the edge of the cover, a first limiting groove, a second limiting groove and a third limiting groove are sequentially disposed.

[0032] The first limiting groove is located at the edge of the boss and is positioned and sealed to the opening of the liquid storage bag;

[0033] The second limiting groove is located on the periphery of the boss and is positioned and sealed to the mouth of the liquid storage bottle;

[0034] The interlayer opening is located inside the cover body, extending from the negative pressure port to the edge of the cover body. The end of the opening extending to the side of the boss is open, and the open end is located between the first limiting groove and the second limiting groove, thereby communicating with the cavity between the liquid storage bag and the liquid storage bottle.

[0035] The first limiting groove is used to fix the liquid storage bag, and the second limiting groove is used to fix the mouth of the liquid storage bottle. With the above design, a closed space is formed between the first limiting groove and the second limiting groove.

[0036] The third limiting slot is designed to assist operators in retrieving the item.

[0037] In a further technical solution, there are two liquid storage bottles. The negative pressure ports of these two liquid storage bottles are connected to a negative pressure source via a first pipeline. The first pipeline is a three-way pipe structure, including a three-way connector, an air intake connection pipe, a first connection pipe, and a second connection pipe. The three connectors of the three-way connector are respectively connected to one end of the air intake connection pipe, one end of the first connection pipe, and one end of the second connection pipe.

[0038] The other end of the suction connection tube is connected to a negative pressure source; while the other ends of the first and second connection tubes are connected to the negative pressure ports of two liquid storage bottles.

[0039] With the above design, the first pipeline can simultaneously perform suction operations on two storage bottles under a standard suction pressure.

[0040] In a further technical solution, the serial port of the first liquid storage bottle is connected to the inlet of the second liquid storage bottle by a second pipeline; the second pipeline includes an inlet elbow, a serial elbow, and a serial pipe connecting the inlet elbow and the serial elbow; the serial elbow is connected to the serial port of the first liquid storage bottle; the inlet elbow is connected to the inlet of the second liquid storage bottle.

[0041] The above design enables the second pipeline to quickly connect two liquid storage bottles in series.

[0042] In a further technical solution, the outer diameters of the outer ends of the serial port, the negative pressure port, and the liquid inlet are different.

[0043] With the above design, foolproof operation can be achieved. If the outer diameters of the serial port, the negative pressure port, and the liquid inlet are the same, it is easy for the suction interface of the first pipeline to be connected to the serial port or the liquid inlet.

[0044] In a further technical solution, the liquid storage bottle also includes a connecting strip, an inlet cap, and a serial port cap, wherein the inlet cap and the serial port cap are both positioned and connected to the cap body via the connecting strip.

[0045] With the above design, the series port, the negative pressure port, or the liquid inlet can be blocked. Generally, the series port and the liquid inlet are blocked, while the negative pressure port is not blocked due to the presence of the anti-overflow valve or the first pipeline.

[0046] In a further technical solution, the valve core of the anti-overflow valve is an expandable body that can expand when it comes into contact with water. When the liquid level rises to the point where it contacts the valve core of the anti-overflow valve, the expandable body expands and blocks the pipeline.

[0047] With the above design, the liquid in the storage bag will be blocked by the anti-overflow valve only after it reaches a certain height. For example, the set height can be selected as one-quarter, one-third or just in contact with the anti-overflow valve at the height of the inner negative pressure cylinder.

[0048] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0049] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0050] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0051] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0052] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0053] The working principle and advantages of this utility model are as follows:

[0054] 1. In this utility model, multiple storage bags connected in series and all set inside the storage bottle can be used to realize the automatic flow of waste liquid in multiple storage bottles. When the waste liquid reaches a certain amount, the storage bottle can be discarded without cleaning, thus improving work efficiency.

[0055] 2. In this utility model, multiple liquid storage bottles can be connected in series through the cooperation of negative pressure port, series port, and liquid inlet. After the series connection is completed, the waste liquid can be automatically transferred between the multiple liquid storage bottles by setting an anti-overflow valve. Specifically, when two liquid storage bottles are set, the first pipeline connects the negative pressure port of both liquid storage bottles to an external suction device. One end of the second pipeline is connected to the series port on the cap of one of the two liquid storage bottles, and the liquid inlet on this cap is used to receive the patient. The other end of the second pipeline is connected to the liquid inlet on the other cap, and the series port on this cap is closed. That is, the two liquid storage bottles form a series structure. During operation, the two liquid storage bottles are simultaneously pumped under the same suction pressure. At this time, the waste liquid first enters the first liquid storage bottle. When the waste liquid level reaches the set height, the anti-overflow valve on the first liquid storage bottle blocks the negative pressure port on the first liquid storage bottle, and the waste liquid enters the second liquid storage bottle. Attached Figure Description

[0056] Appendix Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0057] Appendix Figure 2 This is a schematic diagram of the explosion of the liquid storage bottle in an embodiment of this utility model;

[0058] Appendix Figure 3 This is a schematic diagram of the cross-sectional structure of the liquid storage bottle in an embodiment of this utility model;

[0059] Appendix Figure 4 This is a schematic diagram of the first limiting groove structure in an embodiment of the present utility model;

[0060] Appendix Figure 5 This is a schematic diagram of the serial port structure in an embodiment of the present utility model;

[0061] Appendix Figure 6 This is a schematic diagram of the negative pressure port, series port, and liquid inlet structure in an embodiment of this utility model.

[0062] Appendix Figure 7 This is a schematic diagram of the imported cap structure in an embodiment of the present utility model;

[0063] Appendix Figure 8 This is a schematic diagram of the cross-sectional structure of the cover in an embodiment of the present utility model;

[0064] Appendix Figure 9 This is a schematic diagram of the structure of two covers connected in series in an embodiment of this utility model;

[0065] Appendix Figure 10 This is a schematic diagram of the one-way valve structure in an embodiment of the present utility model;

[0066] Appendix Figure 11This is a schematic diagram of the structure of the cover body connected in series in an embodiment of the present utility model (the first and second pipes used for series connection are omitted).

[0067] Appendix Figure 12 This is a schematic diagram of the waste liquid extraction process in an embodiment of this utility model.

[0068] In the attached diagrams: 1. Cover; 2. Storage bottle; 3. Storage bag; 4. Negative pressure port; 5. Series port; 6. Inlet; 7. Interlayer port; 8. First pipeline; 9. Second pipeline; 10. External negative pressure column; 11. Internal negative pressure cylinder; 12. Clamping rib; 13. Valve retaining ring; 14. External inlet column; 15. Internal inlet cylinder; 16. Limiting ring groove; 17. Valve core outer ring; 18. Connecting part; 19. Valve disc core; 20. Movement clearance; 21. 21. Recessed portion; 22. First limiting groove; 23. Second limiting groove; 24. Third limiting groove; 25. Suction connecting pipe; 26. T-connector; 27. First connecting pipe; 28. Second connecting pipe; 29. ​​Liquid inlet elbow; 30. Series elbow; 31. Series pipe; 32. Connecting strip; 33. Inlet cap; 34. Serial port cap; 35. One-way valve; 36. Anti-overflow valve; A. Negative pressure source; Q. Area inside the liquid storage bottle and outside the liquid storage bag. Detailed Implementation

[0069] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0070] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0071] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0072] See appendix Figures 1-12 As shown, a multi-connectable disposable waste liquid bag device includes a negative pressure source and at least two liquid storage bottles 2; each liquid storage bottle 2 is provided with a liquid storage bag 3, and the negative pressure source is connected to each liquid storage bag 3 and the cavity between the liquid storage bag 3 and the liquid storage bottle 2 through pipelines. An anti-overflow valve 36 is provided on the pipeline between the negative pressure source and the liquid storage bag 3 to prevent liquid in the liquid storage bag 3 from flowing into the negative pressure source; wherein, one of the liquid storage bags 3 is connected to the user through pipelines and is connected in series with the interior of the other liquid storage bags 3 one by one.

[0073] It should be noted that the negative pressure source A can be an electric suction device or a manual suction device, as in this embodiment. The cavity between the liquid storage bag 3 and the liquid storage bottle 2 is the area Q inside the liquid storage bottle 2 and outside the liquid storage bag 3.

[0074] In some specific embodiments, each of the liquid storage bottles 2 is provided with a negative pressure port 4 communicating with the inner cavity of the liquid storage bag 3. The negative pressure port 4 is connected to the negative pressure source via a pipeline through the anti-overflow valve 36. When the liquid level of the waste liquid in the liquid storage bag 3 rises to a certain level, the anti-overflow valve 36 can automatically block the passage between the inner cavity of the liquid storage bag 3 and the negative pressure source. Each of the liquid storage bottles 2 is provided with a double-layer port 7 communicating with the cavity between the liquid storage bag 3 and the liquid storage bottle 2. The double-layer port 7 is connected to the negative pressure source via a pipeline. Each of the liquid storage bottles 2 is also provided with a liquid inlet 6 communicating with the inner cavity of the liquid storage bag 3. A one-way valve is provided inside or connected outside the liquid inlet 6. 35, the one-way valve 35 is unidirectional from the outside to the inner cavity of the liquid storage bag 3; each liquid storage bottle 2 is also provided with a series port 5 connecting to the inner cavity of the liquid storage bag 3; the liquid storage bottles 2 are arranged in sequence: first liquid storage bottle 2, second liquid storage bottle 2 or more; the liquid inlet 6 of the first liquid storage bottle 2 is connected to the user through the pipeline via the one-way valve 35, and the series port 5 of the first liquid storage bottle 2 is connected to the liquid inlet 6 of the second liquid storage bottle 2 through the pipeline via the one-way valve 35, and the series port 5 of the second liquid storage bottle 2 is either closed or connected to the liquid inlet 6 of the subsequent liquid storage bottle 2 via the one-way valve 35.

[0075] The function of the interlayer opening 7 is to extract the gas in area Q inside the liquid storage bottle 2 and outside the liquid storage bag 3, so that the liquid storage bag 3 expands and generates negative pressure to absorb the waste liquid.

[0076] In this embodiment, at least two liquid storage bottles 2 are provided, and two of them can form a series structure. Therefore, by analogy, multiple liquid storage bottles 2 can also form a series structure.

[0077] In this embodiment, the anti-overflow valve 36 is a disposable plastic part that easily absorbs water and expands. It is installed on the negative pressure port 4 of the cover body 1 by means of a rib. Once the liquid level is reached, the sealing work can be completed directly. It is easy to install and has high reliability.

[0078] In this embodiment, the depth of the negative pressure port 4 inside the bag is higher than the depth of the liquid inlet port 6 inside the bag. This is designed to prevent overflow.

[0079] In this invention, multiple storage bottles 2 can be connected in series through the cooperation of the negative pressure port 4, the series port 5, and the liquid inlet 6. After the series connection is completed, the overflow valve 36 enables automatic flow of waste liquid within the multiple storage bottles 2. Specifically, when two storage bottles 2 are provided, the first pipeline 8 connects the negative pressure ports 4 of both storage bottles 2 to an external suction device. One end of the second pipeline 9 is connected to the series port 5 on the cap 1 of one of the two storage bottles 2. The inlet 6 is used to connect to the patient; the other end of the second pipeline 9 is connected to the inlet 6 on another cover 1, and the series port 5 on this cover 1 is closed, that is, the two storage bottles 2 form a series structure. When working, the two storage bottles 2 perform liquid extraction operation simultaneously under the same suction pressure. At this time, the waste liquid first enters the first storage bottle 2. When the waste liquid level reaches the set height, the anti-overflow valve 36 on the first storage bottle 2 blocks the negative pressure port 4 on the storage bottle 2, and the waste liquid enters the second storage bottle 2.

[0080] In some specific embodiments, the liquid storage bottle 2 consists of a bottle body and a cap 1. The cap 1 is sealed on the bottle mouth of the bottle body, and the negative pressure port 4, the series port 5 and the liquid inlet 6 are all provided on the cap 1.

[0081] In this embodiment, the opening of the liquid storage bag 3 is positioned and connected to the cover 1. Generally, a heat-sealing method is chosen to seal the connection. The liquid storage bag 3 is made of soft material, similar to a high-quality plastic bag. After heat-sealing, it will be permanently bonded to the cover 1. When replacing it, the cover and bag will be discarded together.

[0082] In some specific embodiments, the anti-overflow valve 36 is located inside the negative pressure port 4. This arrangement is to prevent waste liquid from contacting and entering the negative pressure port 4. The one-way valve 35 is located inside the liquid inlet 6. If the one-way valve 35 is externally connected, it is easy for the seal to be poor, resulting in leakage.

[0083] In some specific embodiments, the interlayer opening 7 is a channel provided inside the cover 1, one end of which leads to the cavity between the liquid storage bag 3 and the liquid storage bottle 2, and the other end is connected to the negative pressure port 4.

[0084] In some specific embodiments, the negative pressure port 4 includes an outer negative pressure column 10 disposed on the outer side of the cover 1 and an inner negative pressure cylinder 11 disposed on the inner side of the cover 1. The inner negative pressure cylinder 11 is coaxial with and communicates with the outer negative pressure column 10. The inner diameter of the inner negative pressure cylinder 11 is larger than the inner diameter of the outer negative pressure column 10. The anti-overflow valve 36 is positioned and connected inside the inner negative pressure cylinder 11.

[0085] With the above design, the anti-overflow valve 36 will only block the inner negative pressure cylinder 11, but will not enter the outer negative pressure column 10. If it could enter, there would be a sliding gap between the outer negative pressure column 10 and the anti-overflow valve 36, which would pose a risk of waste liquid entering.

[0086] In some specific embodiments, the inner sidewall of the inner negative pressure cylinder 11 is provided with a plurality of clamping ribs 12 in the circumferential direction. The clamping ribs 12 are arranged along the axial direction of the inner negative pressure cylinder 11. All the clamping ribs 12 are combined to form a ring structure, which is interference-fitted with the anti-overflow valve 36.

[0087] With the above design, the anti-overflow valve 36 is fixed within the annular structure. When not in contact with liquid, the anti-overflow valve 36 will not expand. At this time, the annular structure is positioned between the anti-overflow valve 36 and the inner wall of the inner negative pressure cylinder 11, with a certain gap. When the negative pressure port 4 draws in liquid, it also provides a certain suction force to the inside of the storage bag 3 through the gap, allowing the liquid to more fully contact the series port 5 (the reason for contact with the series port 5 is that multiple storage bottles 2 are connected in series; if there is only one storage bottle 2, this is not necessary). If this suction force is not provided, the storage bag 3 will expand to a certain extent and then stop expanding. In other words, its internal pressure is fixed, and the amount of liquid drawn in may not be sufficient to fully contact the series port 5.

[0088] In some specific embodiments, the liquid inlet 6 includes an outer liquid inlet column 14 disposed on the outer side of the cover 1 and an inner liquid inlet cylinder 15 disposed on the inner side of the cover 1. The inner liquid inlet cylinder 15 is coaxial with and communicates with the outer liquid inlet column 14, and the one-way valve 35 is disposed inside the inner liquid inlet cylinder 15.

[0089] A valve ring 13 is disposed at the end of the inner inlet cylinder 15 to limit the one-way valve 35.

[0090] With the above design, the pumped liquid can be limited by the one-way valve 35, that is, the liquid can only be pumped into the storage bag 3 in one direction to prevent liquid backflow.

[0091] In some specific embodiments, the one-way valve 35 includes a valve core 19, a valve core outer ring 17, and a connecting part 18. The valve core outer ring 17 is located on the outer periphery of the valve core 19, and a movable gap 20 is provided between the valve core outer ring 17 and the valve core 19. The connecting part 18 connects the valve core 19 and the valve core outer ring 17.

[0092] The outer ring 17 of the valve core is coaxially disposed inside the inner liquid inlet cylinder 15, and the outer ring 17 of the valve core abuts against the end of the valve buckle sleeve 13;

[0093] The inner wall of the inner liquid inlet cylinder 15 is provided with a limiting ring groove 16 for axially limiting the valve ring sleeve 13.

[0094] With the above design, the one-way valve 35 can be limited in use by the valve retaining ring 13 fixed in the limiting ring groove 16, because this fixing method has better fixation than the current bonding method.

[0095] When the one-way valve 35 is working, specifically, the waste liquid will enter the inner inlet cylinder 15 from the outer inlet column 14 and then be injected into the storage bag 3. During the process of the waste liquid entering the inner inlet cylinder 15 from the outer inlet column 14, the waste liquid will push the valve core 19 to deflect towards the inside of the storage bag 3 with the connection part 18 as the deflection center, so that the waste liquid can enter. Once the waste liquid accumulates a lot or there is a phenomenon of suction backflow, the valve core 19 will deflect towards the outside of the storage bag 3 with the connection part 18 as the deflection center to block the outer inlet column 14, so that the backflow trend of waste liquid is suppressed.

[0096] In some specific embodiments, the diameter of the valve core 19 is smaller than the inner diameter of the valve retaining ring 13; this is configured so that the valve core 19 will not be blocked by the valve retaining ring 13 during operation. The diameter of the valve core 19 is larger than the inner diameter of the outer liquid inlet column 14; this is configured so that the valve core 19 can block the outer liquid inlet column 14.

[0097] In some specific embodiments, the outer surface of the cover 1 has a recess 21 so that the inner surface of the cover 1 forms a boss. The negative pressure port 4, the series port 5 and the liquid inlet 6 are all disposed in the recess 21. On the inner surface of the cover 1, from the boss to the edge of the cover 1, a first limiting groove 22, a second limiting groove 23 and a third limiting groove 24 are sequentially disposed.

[0098] The first limiting groove 22 is located at the edge of the boss and is positioned and sealed to the opening of the liquid storage bag 3;

[0099] The second limiting groove 23 is located on the periphery of the boss and is positioned and sealed to the mouth of the liquid storage bottle 2;

[0100] The interlayer opening 7 is opened inside the cover body 1, extending from the negative pressure opening 4 to the edge of the cover body 1. The end extending to the side of the boss is open, and the open end is located between the first limiting groove 22 and the second limiting groove 23, thereby communicating with the cavity between the liquid storage bag 3 and the liquid storage bottle 2.

[0101] The first limiting groove 22 is used to fix the liquid storage bag 3, and the second limiting groove 23 is used to fix the bottle mouth of the liquid storage bottle 2. With the above design, the cavity between the liquid storage bag 3 and the liquid storage bottle 2 is located between the first limiting groove 22 and the second limiting groove 23.

[0102] The third limiting slot 24 is designed to assist operators in retrieving the item.

[0103] In this embodiment, the negative pressure port 4, the series port 5, and the liquid inlet 6 are all located in the recessed part 21, which makes it easy for the operator to assess at what height the liquid level of the waste liquid will reach before the anti-overflow valve 36 is blocked.

[0104] In some specific embodiments, there are two liquid storage bottles 2. The negative pressure ports 4 of these two liquid storage bottles 2 are connected to a negative pressure source via a first pipeline 8. The first pipeline 8 is a three-way pipe structure, including a three-way connector 26, a suction connection pipe 25, a first connection pipe 27, and a second connection pipe 28. The three connectors of the three-way connector 26 are respectively connected to one end of the suction connection pipe 25, one end of the first connection pipe 27, and one end of the second connection pipe 28.

[0105] The other end of the suction connection tube 25 is connected to a negative pressure source; while the other ends of the first connection tube 27 and the second connection tube 28 are connected to the negative pressure ports 4 of the two liquid storage bottles 2.

[0106] With the above design, the first pipeline 8 can simultaneously perform suction operations on two liquid storage bottles 2 under a standard suction pressure.

[0107] The above design allows the first pipeline 8 to connect multiple liquid storage bottles 2 in series. If there are three liquid storage bottles 2, a new tee connector 26 can be connected to the negative pressure port 4 of the second liquid storage bottle 2. Figure 1 Figure 2 For example, the other end of the second connecting pipe 28 is connected to the new tee connector 26. Subsequent operations can be performed in the same manner.

[0108] In some specific embodiments, the serial port 5 of the first liquid storage bottle 2 is connected to the inlet 6 of the second liquid storage bottle 2 by a second pipeline 9; the second pipeline 9 includes an inlet elbow 29, a serial elbow 30, and a serial pipe 31 connecting the inlet elbow 29 and the serial elbow 30; the serial elbow 30 is connected to the serial port 5 of the first liquid storage bottle 2; the inlet elbow 29 is connected to the inlet 6 of the second liquid storage bottle 2.

[0109] With the above design, the second pipeline 9 can quickly perform the series connection operation of the two liquid storage bottles 2.

[0110] In some specific embodiments, the outer diameters of the outer ends of the serial port 5, the negative pressure port 4, and the liquid inlet 6 are different.

[0111] With the above design, foolproof operation can be achieved. If the outer diameters of the serial port 5, the negative pressure port 4, and the liquid inlet 6 are the same, it is easy for the suction interface of the first pipeline 8 to be connected to the serial port 5 or the liquid inlet 6.

[0112] In some specific embodiments, the liquid storage bottle 2 further includes a connecting strip 32, an inlet cap 33, and a serial port cap 34, wherein the inlet cap 33 and the serial port cap 34 are both positioned and connected to the cap body 1 through the connecting strip 32.

[0113] With the above design, the series port 5, the negative pressure port 4, or the liquid inlet 6 can be blocked. Generally, the series port 5 and the liquid inlet 6 are blocked, while the negative pressure port 4 is not blocked due to the presence of the anti-overflow valve 36 or the first pipeline 8.

[0114] In some specific embodiments, the valve core of the anti-overflow valve 36 is an expandable body that can expand when it comes into contact with water. When the liquid level rises to the point of contacting the valve core of the anti-overflow valve 36, the expandable body expands and blocks the pipeline.

[0115] With the above design, the liquid in the storage bag 3 will be blocked by the anti-overflow valve 36 only after it reaches a certain height. For example, the set height can be selected as one-quarter, one-third or just in contact with the anti-overflow valve 36 of the height of the inner negative pressure cylinder 11.

[0116] Working principle:

[0117] For details, please refer to Figure 1 , Figure 2 and Figure 12 .

[0118] The installation process is as follows:

[0119] The cap 1 with the liquid storage bag 3 installed is placed on the mouth of the liquid storage bottle 2, so that the two form an integral structure.

[0120] Then, the three connectors of the guide tee connector 26 are connected to one end of the suction connecting pipe 25, one end of the first connecting pipe 27, and one end of the second connecting pipe 28, respectively; the other end of the suction connecting pipe 25 is connected to an external suction device; and the other ends of the first connecting pipe 27 and the second connecting pipe 28 are connected to the negative pressure port 4 on the cap 1 of the two liquid storage bottles 2, thus completing the splicing operation of the first pipeline 8.

[0121] Next, connect the series elbow 30 to the series port 5 on one of the caps 1 of the two liquid storage bottles 2; connect the liquid inlet elbow 29 to the liquid inlet 6 on the other cap 1. At the same time, connect the series pipe 31 between the liquid inlet elbow 29 and the series elbow 30, thus completing the splicing of the entire pipeline.

[0122] The suction process is as follows: When there are two liquid storage bottles 2, the serial port 5 on the right cap 1 is closed, and the external suction device is started. At this time, the two liquid storage bottles 2 are simultaneously suctioned under the same suction pressure.

[0123] In the left-hand reservoir 2 (the first one), the first negative pressure port 4 will draw air from the first reservoir 2 and the outside of the first reservoir bag 3 through the interlayer port 7, and at the same time draw air from the inside of the first reservoir bag 3, causing the first reservoir bag 3 to expand and form a vacuum inside, so that the patient's waste fluid is drawn into the first reservoir bag 3 through the first inlet port 6.

[0124] Meanwhile, because the first negative pressure port 4 is performing a suction operation, even after the first liquid storage bag 3 expands to the point where it can no longer expand, the liquid will still continue to be sucked into the first liquid storage bag 3. Once the waste liquid reaches the set height, the first anti-overflow valve 36 will absorb water, expand, and block the first negative pressure port 4. That is, the first negative pressure port 4 in the first liquid storage bottle 2 will no longer generate suction force on the first liquid storage bag 3.

[0125] Since the second negative pressure port 4 on the right-side liquid storage bottle 2 (that is, the second one) will also perform a suction operation (refer to the figure, the second negative pressure port 4 will suck the air inside the second liquid storage bottle 2 and outside the second liquid storage bag 3, and at the same time suck the air inside the second liquid storage bag 3), the second liquid storage bag 3 will also expand, and the second negative pressure port 4 will also perform a suction operation on the second liquid storage bag 3.

[0126] However, the first liquid storage bag 3 and the second liquid storage bag 3 are connected (the connection method can be seen in Figure 2 and Figure 3, specifically the connection is achieved by the second pipeline 9).

[0127] Therefore, when the first storage bag 3 is full, the second inlet 6 will draw the waste liquid in the first storage bag 3 from the first inlet 5 into the second storage bag 3 through the inlet elbow 29, the series elbow 30 and the series pipe 31 (i.e. the second pipe 9) connecting the inlet elbow 29 and the series elbow 30.

[0128] After the waste liquid is drawn into the second storage bag 3, once the waste liquid reaches the set height, the second anti-overflow valve 36 will absorb water, expand, and block the second negative pressure port 4.

[0129] It should be noted that during suction, the inlet 6 inside the first liquid storage bag 3 is present, as is the suction force generated when the first liquid storage bag 3 expands, the suction force of the first external negative pressure column 10, and the suction force transmitted from the second liquid storage bag 3 through the inlet elbow 29, the series elbow 30, and the series pipe 31 connecting the inlet elbow 29 and the series elbow 30.

[0130] The inlet 6 on the second liquid storage bag 3 exists, and the suction generated when the second liquid storage bag 3 expands is the suction of the second external negative pressure column 10.

[0131] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A multi-unit disposable waste liquid bag device, characterized in that: It includes a negative pressure source and at least two liquid storage bottles (2); each liquid storage bottle (2) is provided with a liquid storage bag (3), the negative pressure source is connected to each liquid storage bag (3) and the cavity between the liquid storage bag (3) and the liquid storage bottle (2) through a pipeline, and an anti-overflow valve (36) is provided on the pipeline between the negative pressure source and the liquid storage bag (3) to prevent the liquid in the liquid storage bag (3) from flowing into the negative pressure source; wherein, one of the liquid storage bags (3) is connected to the user through a pipeline and is connected in series with the interior of the other liquid storage bags (3) one by one.

2. The multi-unit disposable waste liquid bag device according to claim 1, characterized in that: Each of the liquid storage bottles (2) is provided with a negative pressure port (4) that connects to the inner cavity of the liquid storage bag (3), and the negative pressure port (4) is connected to the negative pressure source via the anti-overflow valve (36) through a pipeline; each of the liquid storage bottles (2) is provided with a double-layer port (7) that connects to the cavity between the liquid storage bag (3) and the liquid storage bottle (2), and the double-layer port (7) is connected to the negative pressure source through a pipeline; each of the liquid storage bottles (2) is also provided with a liquid inlet (6) that connects to the inner cavity of the liquid storage bag (3), and each of the liquid storage bottles (2) The container is also provided with a serial port (5) that connects to the inner cavity of the liquid storage bag (3); the liquid storage bottle (2) includes a first liquid storage bottle (2) and a second liquid storage bottle (2); the inlet (6) of the first liquid storage bottle (2) is connected to the user by a pipeline, and the serial port (5) of the first liquid storage bottle (2) is connected to the inlet (6) of the second liquid storage bottle (2) by a pipeline, while the serial port (5) of the second liquid storage bottle (2) is closed or connected to the inlet (6) of the subsequent liquid storage bottle (2).

3. The multi-unit disposable waste liquid bag device according to claim 2, characterized in that: Each of the liquid storage bottles (2) has a one-way valve (35) inside or outside the liquid inlet (6), and the one-way valve (35) is directed to flow from the outside to the inner cavity of the liquid storage bag (3).

4. The multi-unit disposable waste liquid bag device according to claim 3, characterized in that: The liquid storage bottle (2) consists of a bottle body and a cap (1). The cap (1) is sealed on the bottle mouth of the bottle body. The negative pressure port (4), the series port (5) and the liquid inlet (6) are all located on the cap (1).

5. The multi-unit disposable waste liquid bag device according to claim 4, characterized in that: The anti-overflow valve (36) is located inside the negative pressure port (4), and the one-way valve (35) is located inside the liquid inlet (6).

6. The multi-unit disposable waste liquid bag device according to claim 4, characterized in that: The interlayer opening (7) is a channel set inside the cover (1), one end of which leads to the cavity between the liquid storage bag (3) and the liquid storage bottle (2), and the other end is connected to the negative pressure port (4).

7. The multi-connection disposable waste liquid bag device according to any one of claims 4-6, characterized in that: The negative pressure port (4) includes an outer negative pressure column (10) disposed on the outer side of the cover (1) and an inner negative pressure cylinder (11) disposed on the inner side of the cover (1). The inner negative pressure cylinder (11) is coaxial with and connected to the outer negative pressure column (10). The inner diameter of the inner negative pressure cylinder (11) is larger than the inner diameter of the outer negative pressure column (10). The anti-overflow valve (36) is positioned and connected inside the inner negative pressure cylinder (11).

8. The multi-unit disposable waste liquid bag device according to claim 7, characterized in that: The inner wall of the inner negative pressure cylinder (11) is provided with a plurality of clamping ribs (12) in the circumferential direction. The clamping ribs (12) are arranged along the axial direction of the inner negative pressure cylinder (11). All the clamping ribs (12) are combined to form a ring structure, which is interference fit with the anti-overflow valve (36).

9. The multi-connection disposable waste liquid bag device according to any one of claims 4-6, characterized in that: The liquid inlet (6) includes an outer liquid inlet column (14) disposed on the outer side of the cover (1) and an inner liquid inlet cylinder (15) disposed on the inner side of the cover (1). The inner liquid inlet cylinder (15) is coaxial with and connected to the outer liquid inlet column (14). The one-way valve (35) is disposed inside the inner liquid inlet cylinder (15). A valve ring (13) is disposed at the end of the inner inlet cylinder (15) to limit the one-way valve (35).

10. The multi-connection disposable waste liquid bag device according to claim 9, characterized in that: The one-way valve (35) includes a valve core (19), a valve core outer ring (17), and a connecting part (18). The valve core outer ring (17) is located on the outer periphery of the valve core (19). There is a movable gap (20) between the valve core outer ring (17) and the valve core (19). The connecting part (18) connects the valve core (19) and the valve core outer ring (17). The outer ring (17) of the valve core is coaxially disposed inside the inner liquid inlet cylinder (15), and the outer ring (17) of the valve core abuts against the end of the valve buckle sleeve (13); The inner wall of the inner liquid inlet cylinder (15) is provided with a limiting ring groove (16) for axially limiting the valve ring sleeve (13).

11. The multi-connection disposable waste liquid bag device according to claim 10, characterized in that: The diameter of the valve core (19) is smaller than the inner diameter of the valve ring sleeve (13); the diameter of the valve core (19) is larger than the inner diameter of the outer liquid inlet column (14).

12. The multi-connection disposable waste liquid bag device according to any one of claims 4-6, characterized in that: The outer surface of the cover (1) has a recess (21) so that the inner surface of the cover (1) forms a boss. The negative pressure port (4), the series port (5) and the liquid inlet (6) are all provided in the recess (21). On the inner surface of the cover (1), from the boss to the edge of the cover (1), a first limiting groove (22), a second limiting groove (23) and a third limiting groove (24) are provided in sequence. The first limiting groove (22) is located at the edge of the boss and is connected to the opening of the liquid storage bag (3) in a positioning and sealing connection. The second limiting groove (23) is located on the periphery of the boss and is connected to the bottle mouth of the liquid storage bottle (2) in a positioning and sealing connection. The interlayer opening (7) is located inside the cover (1) and extends from the negative pressure opening (4) to the edge of the cover (1). The end of the opening extending to the side of the boss is open. The open end is located between the first limiting groove (22) and the second limiting groove (23), thereby communicating with the cavity between the liquid storage bag (3) and the liquid storage bottle (2).

13. The multi-connection disposable waste liquid bag device according to any one of claims 2-6, characterized in that: There are two liquid storage bottles (2). The negative pressure ports (4) of these two liquid storage bottles (2) are connected to a negative pressure source through a first pipeline (8). The first pipeline (8) is a three-way pipe structure, including a three-way connector (26), an air intake connection pipe (25), a first connection pipe (27), and a second connection pipe (28). The three connectors of the three-way connector (26) are respectively connected to one end of the air intake connection pipe (25), one end of the first connection pipe (27), and one end of the second connection pipe (28). The other end of the suction connection tube (25) is connected to a negative pressure source; while the other ends of the first connection tube (27) and the second connection tube (28) are connected to the negative pressure ports (4) of the two liquid storage bottles (2).

14. The multi-connection disposable waste liquid bag device according to any one of claims 2-6, characterized in that: The serial port (5) of the first liquid storage bottle (2) is connected to the inlet (6) of the second liquid storage bottle (2) by the second pipeline (9); the second pipeline (9) includes an inlet elbow (29), a serial elbow (30) and a serial pipe (31) connecting the inlet elbow (29) and the serial elbow (30); the serial elbow (30) is connected to the serial port (5) of the first liquid storage bottle (2); the inlet elbow (29) is connected to the inlet (6) of the second liquid storage bottle (2).

15. The multi-connection disposable waste liquid bag device according to claim 2, characterized in that: The outer diameters of the outer ends of the serial port (5), the negative pressure port (4), and the liquid inlet (6) are different.

16. The multi-connection disposable waste liquid bag device according to claim 4, characterized in that: The liquid storage bottle (2) also includes a connecting strip (32), an inlet cap (33) and a serial port cap (34), and the inlet cap (33) and the serial port cap (34) are both positioned and connected to the cover (1) through the connecting strip (32).

17. The multi-connection disposable waste liquid bag device according to any one of claims 1-6, characterized in that: The valve core of the anti-overflow valve (36) is an expandable body that can expand when it comes into contact with water. When the liquid level rises to the point of contacting the valve core of the anti-overflow valve (36), the expandable body expands and blocks the pipeline.

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