A disposable oral secretion drainage bag

By designing medical PU sponge strips, tapered soft silicone tubes, and transparent composite membrane bags that adapt to the shape of the oral cavity, combined with anti-backflow structures and fixing components, the problem of loose drainage in existing devices has been solved, achieving efficient and stable drainage of oral secretions and improving patient comfort and safety.

CN224523318UActive Publication Date: 2026-07-21WENZHOU CENT HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU CENT HOSPITAL
Filing Date
2025-08-22
Publication Date
2026-07-21

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Abstract

The utility model provides a disposable oral cavity secretion drainage bag, including drainage sponge strip, diversion connecting part, drainage bag main part and fixed component, drainage sponge strip is the medical adsorption material of adaptation oral cavity form, is used for contacting oral cavity and adsorbing secretion. Drainage sponge strip adopts medical PU sponge, and hydrophilic nature makes it can infiltrate and adhere oral cavity secretion quickly, and the biocompatibility ensures that there is no irritation with oral cavity mucosa contact, and the surface and inside of sponge strip have 50-200mu m intercommunication micropore, form micro -channel, utilize capillary action initiative adsorption secretion, need not external power, and the wedge shape design makes it fit oral cavity, reduces the clearance and adsorption dead angle, promotes adsorption efficiency, guides secretion to flow to tail part diversion connecting part, combines the SAP high water absorbent resin and the anti -reverse flow structure etc. of diversion connecting part, drainage bag main part, realizes secretion self -adsorption, directional delivery, solid state lock -in, reduces skin complication, reduces nursing load, promotes the comfort and security.
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Description

Technical Field

[0001] This utility model belongs to the field of medical and nursing supplies technology, and more specifically, it relates to a disposable oral secretion drainage bag. Background Technology

[0002] Oral secretion drainage is an important clinical procedure for patients with swallowing difficulties or coma. Its purpose is to promptly remove accumulated secretions from the oral cavity, preventing complications such as aspiration, pulmonary infection, and perioral skin damage, and ensuring patient safety and comfort. Currently, relevant drainage devices are widely used in clinical practice to assist medical staff in managing secretions.

[0003] Chinese patent application CN201920636438.7 discloses a disposable oral secretion drainage device, comprising an absorbent tampon, a sealing catheter, and a drainage bag. The absorbent tampon's head extends into the patient's mouth, and its tail extends into the drainage bag. The sealing catheter covers the portion of the absorbent tampon located outside the drainage bag and the patient's mouth, and its lower end is connected to the opening of the drainage bag. This invention can promptly drain secretions from the patient's mouth and is simple in structure and easy to operate.

[0004] The aforementioned utility model lacks an adaptation design for the drainage component and the shape of the oral cavity, resulting in poor adhesion between the drainage component and the oral mucosa, which easily leads to adsorption dead zones and makes it impossible to efficiently adsorb secretions. Especially for viscous secretions, the drainage efficiency is low and it is difficult to meet the needs of continuous and thorough drainage.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a disposable oral secretion drainage bag in order to achieve a more practical purpose. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a disposable oral secretion drainage bag, which is achieved by the following specific technical means:

[0007] A disposable oral secretion drainage bag includes symmetrically arranged drainage sponge strips, a flow guiding connector, a drainage bag body, and a fixing component. The drainage sponge strips are medical absorbent materials adapted to the shape of the oral cavity, used to contact the oral cavity and absorb secretions. The flow guiding connector connects two sets of drainage sponge strips to the drainage bag body, used to guide the absorbed secretions to the drainage bag body. The drainage bag body is a flexible bag with a accommodating space, containing a material that can solidify liquid, and has an anti-backflow structure at the bag inlet. The fixing component includes parts for fixing the drainage sponge strips.

[0008] Preferably, the drainage sponge strip is made of medical PU sponge, which is wedge-shaped and has micropores distributed on its surface and inside.

[0009] Preferably, the pore size of the micropores is 50-200μm, the length of the drainage sponge strip is 60-100mm, and the width is 10-15mm.

[0010] Preferably, the flow guiding connection part is a soft channel structure with a flow guiding groove on its inner wall.

[0011] Preferably, the flow guide connection part is a tapered soft silicone tube with a length of 20-30mm.

[0012] Preferably, the main body of the drainage bag is a transparent composite film bag with a volume of 500-1000ml; the material that can solidify the liquid is SAP superabsorbent polymer particles.

[0013] Preferably, the anti-backflow structure includes a one-way valve and a hydrophobic nonwoven fabric isolation layer covering the SAP superabsorbent resin particles.

[0014] Preferably, the fixing component includes adhesive wings installed on the outside of two sets of drainage sponge strips, and both sets of adhesive wings can be bent to fit the cheek. One sidewall of each set of adhesive wings is connected to an adjustable strap, and multiple sets of adhesive strips are distributed at intervals on the inner side of the adhesive wings.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model uses a medical-grade PU sponge for drainage. Its hydrophilicity allows it to quickly absorb and adhere to oral secretions. Its biocompatibility ensures that it does not irritate the oral mucosa. The surface and interior of the sponge strip have interconnected micropores of 50-200μm, forming microchannels. It actively adsorbs secretions using capillary action without the need for external power. The wedge-shaped design makes it fit the oral cavity, reducing gaps and adsorption dead angles, improving adsorption efficiency, and guiding secretions to flow towards the tail guide connection. Combined with the guide connection, the SAP super absorbent resin of the drainage bag body, and the anti-backflow structure, it achieves self-adsorption, directional delivery, and solid-state storage of secretions, reducing skin complications, reducing nursing burden, improving comfort and safety, and is suitable for various scenarios.

[0017] 2. This utility model features multiple sets of adhesive strips spaced apart on the inner side of the adhesive wings, with one end connected to an adjustable neck strap. It also possesses bendable characteristics to conform to the face. This design utilizes the adhesive strips to enhance the adhesion and fixation effect with the skin. Combined with the adjustable neck strap, it further improves the overall stability of the fixation. Furthermore, its bendable characteristics allow it to adapt to different patients' facial contours, ensuring that components such as the drainage sponge strip are not easily displaced during oral movements or changes in patient position. This guarantees the continuity and reliability of the drainage process, making it a key structure in fixation components that balances fixation effectiveness and adaptability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0019] Figure 2 This is a front view of the utility model.

[0020] Figure 3 This is a schematic diagram of the back side of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Drainage sponge strip; 2. Drainage connection part; 3. Drainage bag body; 4. Fixing component; 401. Adhesive wing; 5. Strap; 6. Micropores; 7. Adhesive strip. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example:

[0025] As attached Figure 1 To be continued Figure 3 As shown:

[0026] This utility model provides a disposable oral secretion drainage bag, including a drainage sponge strip 1, a flow guiding connection part 2, a drainage bag body 3, and a fixing component 4; the drainage sponge strip 1 is a medical absorbent material adapted to the shape of the oral cavity, used to contact the oral cavity and absorb secretions; the flow guiding connection part 2 connects the drainage sponge strip 1 and the drainage bag body 3, used to guide the absorbed secretions to the drainage bag body 3; the drainage bag body 3 is a flexible bag with a accommodating space, with a material inside that can solidify liquid, and an anti-backflow structure at the bag inlet; the fixing component 4 includes components for fixing the drainage sponge strip 1 and components for fixing the drainage bag body 3.

[0027] The drainage sponge strip 1 is made of medical-grade PU sponge, wedge-shaped, with micropores 6 distributed on its surface and inside. The wedge shape and medical-grade PU sponge conform to the shape of the oral cavity, allowing it to closely fit the inner wall of the mouth, reducing gaps with the mucosa and avoiding adsorption dead zones. The 50-200μm micropores 6 distributed on its surface and inside can efficiently adsorb oral secretions through capillary action, achieving active adsorption without external power, thus improving drainage efficiency. Its size design of 60-100mm in length and 10-15mm in width adapts to different oral cavity depths and secretion overflow areas, making it highly adaptable.

[0028] Among them, the pore size of the micropore 6 is 50-200μm, the length of the drainage sponge strip 1 is 60-100mm, and the width is 10-15mm.

[0029] The flow guide connection part 2 is a soft channel structure with a flow guide groove on its inner wall. As a soft channel structure with a flow guide groove on the inner wall, it can guide the adsorbed secretions to flow in a specific direction and avoid stagnation. It adopts a tapered soft silicone tube, which is soft and can deform slightly with the patient's movement, reducing pressure and irritation to the oral cavity and skin. The 20-30mm length design ensures smooth delivery of secretions while avoiding tangling or pulling problems caused by excessive length, thus improving the comfort of use.

[0030] The flow guide connection part 2 is a tapered soft silicone tube with a length of 20-30mm.

[0031] The main body of the drainage bag (3) is a transparent composite film bag with a volume of 500-1000ml. The material that can solidify the liquid is SAP superabsorbent polymer (SAP) particles. The transparent composite film bag facilitates observation of the amount of secretions and allows for timely replacement; the 500-1000ml volume can meet the needs of long-term use and reduce the frequency of replacement; the internal SAP superabsorbent polymer particles can quickly solidify liquid secretions into a gel state, preventing liquid from shaking and overflowing, while also inhibiting the spread of odor; the anti-backflow structure with a one-way valve and a hydrophobic non-woven fabric isolation layer can effectively prevent secretions from flowing back, reduce the risk of aspiration, and improve drainage safety.

[0032] The anti-backflow structure includes a one-way valve and a hydrophobic nonwoven fabric isolation layer covering the SAP superabsorbent resin particles.

[0033] The fixing component 4 includes an adhesive wing 401 installed on the outside of the drainage sponge strip 1. One end of the adhesive wing 401 is connected to an adjustable strap 5, and the adhesive wing 401 can be bent to fit the cheek. Multiple sets of adhesive strips 7 are spaced apart on the inner side of the adhesive wing 401. The adhesive wing 401 can be bent to fit the cheek, adapting to the facial contours of different patients and enhancing the fit. The multiple sets of adhesive strips 7 spaced apart on the inner side can strengthen the adhesion and fixation effect with the skin. Together with the adjustable strap 5 connected to one end, the tightness can be adjusted according to the patient's body shape, ensuring that the drainage sponge strip 1 and the overall structure are not easily displaced when the patient's mouth moves or body position changes, ensuring the stability and continuity of the drainage process.

[0034] The working principle of this embodiment is as follows: During use, the drainage sponge strip 1 is placed inside the patient's mouth. Its wedge-shaped design adapts to the oral cavity shape. The hydrophilicity of the medical PU sponge allows it to quickly soak into and contact oral secretions. The interconnected micropores 6, 50-200μm on the surface and inside, actively adsorb secretions through capillary action, requiring no external power. Guided by capillary force and the guide grooves on the inner wall of the guide connection part 2, the adsorbed secretions are directionally transported to the drainage bag body 3 through the conical soft silicone tube. The secretions entering the drainage bag body 3 are rapidly absorbed by the internal SAP superabsorbent polymer particles. It solidifies into a gel state, and at the same time, the one-way valve and hydrophobic non-woven fabric isolation layer at the entrance of the bag form an anti-backflow structure to prevent secretions from flowing back; in the fixing component 4, the adhesive wing 401 can be bent to fit the patient's cheek, and multiple sets of adhesive strips 7 on the inner side enhance the adhesive fixation effect. Together with the adjustable strap 5 connected at one end, it ensures that the drainage sponge strip 1, the drainage connection part 2 and other components are not easily displaced when the patient's oral cavity moves or body position changes, ensuring that the entire drainage process is continuous and stable, and finally realizing the complete drainage process of oral secretions "self-adsorption → directional delivery → solid-state locking".

[0035] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A disposable oral secretion drainage bag, characterized in that... The device includes symmetrically arranged drainage sponge strips (1), a flow guiding connection part (2), a drainage bag body (3), and a fixing component (4); the drainage sponge strips (1) are medical absorbent materials adapted to the shape of the oral cavity, used to contact the oral cavity and absorb secretions; the flow guiding connection part (2) connects two sets of drainage sponge strips (1) and the drainage bag body (3), used to guide the absorbed secretions to the drainage bag body (3); the drainage bag body (3) is a flexible bag with a accommodating space, with a material inside that can solidify liquid, and an anti-backflow structure at the bag inlet; the fixing component (4) includes components for fixing the drainage sponge strips (1).

2. The disposable oral secretion drainage bag according to claim 1, characterized in that... The drainage sponge strip (1) is a medical PU sponge, wedge-shaped, with micropores (6) distributed on its surface and inside.

3. The disposable oral secretion drainage bag according to claim 2, characterized in that... The pore size of the micropore (6) is 50-200μm, and the length of the drainage sponge strip (1) is 60-100mm and the width is 10-15mm.

4. The disposable oral secretion drainage bag according to claim 1, characterized in that... The flow guiding connection part (2) is a soft channel structure with a flow guiding groove on its inner wall.

5. The disposable oral secretion drainage bag according to claim 4, characterized in that... The flow guide connection part (2) is a tapered soft silicone tube with a length of 20-30mm.

6. The disposable oral secretion drainage bag according to claim 1, characterized in that... The main body of the drainage bag (3) is a transparent composite film bag with a volume of 500-1000ml; the material that can solidify the liquid is SAP super absorbent resin particles.

7. The disposable oral secretion drainage bag according to claim 6, characterized in that... The anti-backflow structure includes a one-way valve and a hydrophobic nonwoven fabric isolation layer covering the SAP superabsorbent resin particles.

8. The disposable oral secretion drainage bag according to claim 1, characterized in that... The fixing component (4) includes adhesive wings (401) installed on the outside of two sets of drainage sponge strips (1), and both sets of adhesive wings (401) can be bent to fit the cheek. One side wall of the two sets of adhesive wings (401) is connected to an adjustable strap (5), and multiple sets of adhesive strips (8) are distributed at intervals on the inner side of the adhesive wings (401).