Collecting device for preventing exudate of drainage tube from leaking

Abstract

The invention relates to the technical field of medical instruments, in particular to a collecting device for preventing exudate of a drainage tube from leaking. Comprising a connecting seat arranged on a drainage tube and a sealing cover fixedly connected with the connecting seat, wherein the sealing cover is of an arc-shaped cover structure which is arranged on the peripheral skin of the cannula opening in a sealing and covering mode; a liquid collecting bag is arranged at the bottom of the sealing cover, and a negative pressure air exhaust connector communicated with the interior of the sealing cover is arranged on the connecting base. The vacuum adsorption principle of the annular negative-pressure sealing groove is used for replacing traditional medical glue for pasting, influences of skin oil outlet, perspiration or hair are avoided, sealing is lasting, and chemical stimulation to the skin is avoided. And the chronic disease of sealing failure caused by seepage'injection 'during cough and sneezing in clinic is solved. And the stability of the sealing edge is ensured through the matching of the buffering of the cover body and the powerful negative pressure adsorption. In addition, through active negative pressure drainage, it is ensured that the skin around the tube is always in a relatively dry environment, and skin dipping erosion is completely eradicated.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a collection device for preventing leakage of exudate from a drainage tube. Background Technology

[0002] During postoperative drainage or puncture-guided drainage, a gap often exists between the drainage tube and the skin puncture site. Due to changes in patient position, increased abdominal pressure (such as coughing), or slight blockage of the drainage tube, exudate, blood, or peritoneal fluid can easily leak out through the sinus tract between the tube wall and the skin.

[0003] Currently, the main clinical approach is to cover the ostomy with thick gauze or attach a ostomy bag baseplate. However, the passive absorption capacity of gauze is limited, and once saturated with exudate, it can soak the skin around the ostomy tube, leading to dermatitis or even retrograde infection.

[0004] While existing ostomy bag baseplates offer good conformability and adhesion in routine ostomy care, they suffer from drawbacks when dealing with peritumoral drainage. The presence of the drainage tube and the continuous immersion of the surrounding skin in drainage fluid necessitate cutting the baseplate's adhesive surface around the tube, disrupting the baseplate's complete annular structure. This results in a reduced adhesive area and increased difficulty in sealing the edges. Particularly when abdominal pressure increases suddenly due to coughing or changes in position, high-pressure drainage can easily "spurt" out through the tiny gap between the drainage tube wall and the cut edge of the baseplate, impacting the baseplate's edges and accelerating the dissolution or peeling of the adhesive layer, leading to edge lifting or even complete detachment. Furthermore, the tackiness of traditional baseplate adhesives is also weakened in areas of skin with high sebum secretion or excessive sweating.

[0005] Therefore, there is an urgent clinical need for a leak-proof collection device that can actively seal, effectively collect exudate without damaging the skin, and is securely fixed. Summary of the Invention

[0006] The purpose of this invention is to provide a collection device to prevent leakage of exudate from the drainage tube, and to solve the problems of leakage caused by poor sealing due to skin folds, coughing impact, and insecure fixation in the prior art.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a collection device for preventing leakage of exudate from a drainage tube, comprising a connecting seat disposed on the drainage tube and a sealing cover fixedly connected to the connecting seat; The sealing cover is an arc-shaped cover structure located on the skin surrounding the insertion port, and an elastic band is provided on it to fix the position of the sealing cover. A liquid collection bag is provided at the bottom of the sealing cover, and a negative pressure suction connector is provided on the connecting seat to communicate with the inside of the sealing cover; air can be drawn out by connecting an external syringe or a negative pressure balloon to create a negative pressure environment inside and around the sealing cover.

[0008] Preferably, the negative pressure suction connector is equipped with a one-way valve, which only allows gas and liquid to flow out of the sealing cover, preventing outside air from flowing back into the sealing cover and disrupting the negative pressure state, while also preventing liquid from flowing back into the collection bag.

[0009] Preferably, the sealing cover is a deformable structure; for example, it is made of transparent and soft silicone or polyurethane material, which can adapt to the contours of the skin surface.

[0010] Preferably, the sealing cover is provided with a negative pressure suction port that communicates with the negative pressure suction connector.

[0011] Preferably, the bottom edge of the sealing cover is provided with a circumferential negative pressure sealing groove, which is connected to the negative pressure suction connector through a suction pipe. A one-way valve is installed in the suction pipe. When air is suctioned through the negative pressure suction connector, not only is negative pressure generated in the inner cavity of the sealing cover to absorb the seepage, but the air in the annularly arranged negative pressure sealing groove is also extracted, forming a vacuum adsorption effect. This causes the edge of the sealing cover to actively adhere to the skin surface like a suction cup, thereby completely eliminating leakage gaps caused by skin folds.

[0012] Preferably, two connecting ears are symmetrically arranged on the outer wall of the sealing cover for connecting the elastic band.

[0013] Preferably, the end of the elastic band is provided with Velcro or hooks for splicing.

[0014] Preferably, the liquid collection bag is a first liquid collection bag fixedly connected to the outer wall of the sealing cover; the top of the first liquid collection bag is provided with a liquid collection port communicating with the bottom of the sealing cover, and a drain valve is provided at its bottom; when there is a lot of leakage, it can be discharged through the drain valve at any time without the need to replace the device.

[0015] Preferably, the collection bag is a second collection bag connected to the bottom of the sealing cover, and the bottom of the sealing cover is provided with a sealing joint that is detachably connected to the second collection bag; the second collection bag is detachably connected to the sealing joint by threads or buckles, which facilitates the replacement of a small and lightweight collection bag when there is less exudate or when the patient is active.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are as follows: This invention utilizes the vacuum adsorption principle of an annular negative pressure sealing groove to replace traditional medical adhesive bonding. It is unaffected by skin oil, sweat, or hair, providing a long-lasting seal without chemical irritation to the skin. Furthermore, it solves the persistent problem of seal failure caused by exudate "spraying" during coughing or sneezing. The combination of the cover's cushioning and strong negative pressure adsorption ensures the stability of the sealing edge. This application also utilizes active negative pressure drainage to ensure the skin around the tube remains in a relatively dry environment, completely preventing skin maceration and erosion. In addition, the elastic band fixation and detachable collection bag design ensure patient comfort and allow for moderate movement; changing the collection container is extremely convenient for medical staff and does not cause secondary skin avulsion injuries. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings. Figure 1 This is a schematic diagram of the main body of the collection device for preventing leakage of exudate from the drainage tube according to the present invention; Figure 2 This is a schematic diagram of the collection device for preventing leakage of exudate from the drainage tube in Example 1; Figure 3 This is a schematic diagram of the collection device for preventing leakage of seepage from the drainage tube in Example 2.

[0018] Explanation of reference numerals in the attached drawings: 1. Drainage tube; 2. Connecting seat; 21. Negative pressure suction connector; 3. Sealing cover; 31. Connecting ear; 32. Negative pressure suction port; 33. Negative pressure sealing groove; 331. Suction tube; 4. Elastic band; 41. Hook; 5. First collection bag; 51. Collection port; 52. Drain valve; 6. Body tissue; 7. Second collection bag; 71. Sealing connector. Detailed Implementation

[0019] Example 1 refer to Figure 1 and Figure 2 This embodiment discloses a collection device to prevent leakage of drainage tube exudate, including a connecting seat 2 fixedly installed on the drainage tube 1 and a sealing cover 3 fixedly connected to the connecting seat 2; wherein, the sealing cover 3 is an arc-shaped cover structure that is located on the skin outside the insertion port, and an elastic band 4 is connected to it to fix the position of the sealing cover 3; a collection bag is installed at the bottom of the sealing cover 3, and a negative pressure suction connector 21 communicating with the inside of the sealing cover 3 is installed on the connecting seat 2.

[0020] The connecting seat 2 is made of rigid medical plastic and has a through hole in the center for the drainage tube 1 to pass through. A negative pressure suction connector 21 is integrally formed on one side of the connecting seat 2, and a one-way valve made of medical silicone is embedded inside the connector.

[0021] In the specific design, the inner wall of the central through hole of the connecting seat 2 is integrally formed or embedded with an annular drainage tube sealing ring 22. The drainage tube sealing ring 22 is made of medical silicone or thermoplastic elastomer, and its inner diameter is slightly smaller than the outer diameter of the drainage tube 1. When the drainage tube 1 passes through the drainage tube sealing ring 22, the two form an interference fit, thereby creating an airtight seal between the connecting seat 2 and the drainage tube 1.

[0022] As an alternative, the inner wall of the through hole of the connector 2 can also be coated with a medical pressure-sensitive adhesive layer, or after the drainage tube 1 is inserted, medical tape can be wrapped around the inlet end of the connector 2 for auxiliary sealing.

[0023] The sealing cover 3 is made of high-transmittance medical silicone, and is cup-shaped with good deformability. A complete negative pressure sealing groove 33 is formed on the inner side of the bottom edge of the sealing cover 3. The internal cavity of the negative pressure sealing groove 33 extends upward through a thin suction pipe 331 and is connected to the negative pressure suction connector 21 on the connecting seat 2; a one-way valve is installed in the suction pipe 331.

[0024] The outer wall of the sealing cover 3 is provided with two symmetrical connecting ears 31. The elastic band 4 passes through the connecting ears 31, and its two ends are respectively sewn with a hook and loop side and a loop side.

[0025] The first liquid collection bag 5 is fixedly connected to the lower outer wall of the sealing cover 3 by a high-frequency heat sealing process. A liquid collection port 51 is provided at the lowest point of the bottom of the sealing cover 3, which is directly connected to the inner cavity of the first liquid collection bag 5. A rotatable drain valve 52 is installed at the bottom end of the first liquid collection bag 5.

[0026] The operation procedure in this embodiment is as follows: Medical staff pass the drainage tube 1 through the connector 2 and cover the drainage tube opening with the sealing cover 3. The elastic band 4 is then wrapped around the patient's waist and abdomen and adjusted to a comfortable tightness. Subsequently, a 20ml empty syringe is used to aspirate 3-5 times using the nipple of the syringe aimed at the negative pressure suction connector 21. At this time, the air in the annular negative pressure sealing groove 33 is extracted, the silicone cover slightly collapses, and the edges firmly adhere to the skin. If any leakage overflows from the tube opening, the leakage will be immediately drawn into the sealing cover 3 and slide into the first collection bag 5.

[0027] Working principle In this embodiment, the problem of leakage around the drainage tube is fundamentally solved by the combined effect of "negative pressure adsorption sealing" and "elastic band mechanical fixation".

[0028] The specific work process is as follows: During installation and positioning, place the sealing cover over the point where the drainage tube exits the skin, with the drainage tube passing through the connector. Adjust the position of the sealing cover so that its bottom edge is completely flush with the normal skin around the insertion site.

[0029] On one hand, an elastic band is used to wrap around the patient's body (such as the waist or chest) and fastened with Velcro. The elastic band provides a pre-tension perpendicular to the skin, ensuring that the seal does not shift macroscopically when the patient turns over or coughs.

[0030] Additionally, the syringe is connected to the negative pressure suction connector for aspiration. At this time, the gas in the annular negative pressure sealing groove at the bottom edge of the sealing cover is extracted, forming a negative pressure chamber. Under atmospheric pressure, the sealing groove actively adsorbs and lifts the skin like a "ring-shaped vacuum adsorption structure," filling in the fine textures and wrinkles on the skin surface and constructing a zero-leakage microscopic sealing barrier.

[0031] When dealing with the "flowing" seepage, the seepage around the drainage tube will not spread laterally to soak the skin due to the slight negative pressure formed in the inner cavity of the sealing cover by air extraction. Instead, it will be quickly drawn into the collection bag at the bottom of the sealing cover under the pressure difference.

[0032] In response to the "spraying" of exudate, when a patient coughs violently, causing a sudden increase in abdominal pressure, the high-pressure exudate impacts into the sealing chamber. Due to the extremely strong vacuum suction force of the annular negative pressure sealing groove and the deformable structure of the sealing cover, the impact pressure is buffered and absorbed by the slight expansion of the cover. Subsequently, the liquid falls into the collection bag under the action of gravity, effectively preventing the high-pressure exudate from breaching the sealing edge.

[0033] Medical staff can observe the skin around the tube through the transparent sealing cover. When the fluid in the collection bag reaches a certain volume, the drain valve is opened to release the fluid, or the detachable collection bag can be unscrewed and replaced directly. The entire operation does not require removing the sealing cover, greatly reducing patient discomfort.

[0034] Example 2 This embodiment is largely the same as Embodiment 1, except for the connection method of the liquid collection bag.

[0035] In this embodiment, a threaded connector is installed at the bottom of the sealing cover 3, and a sealing connector adapted to the threaded connector for threaded sealing connection is provided at the opening of the second collection bag 7. After a small amount of exudate has been collected in the second collection bag 7, the patient or nurse can directly unscrew the second collection bag 7 and replace it with a new sterile collection bag.

[0036] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A collection device for preventing leakage of exudate from a drainage tube, characterized in that: Includes a connecting seat (2) disposed on the drainage tube (1) and a sealing cover (3) fixedly connected to the connecting seat (2); The sealing cover (3) is an arc-shaped cover structure that is placed on the skin around the insertion port, and an elastic band (4) is provided on it to fix the position of the sealing cover (3). The bottom of the sealing cover (3) is provided with a liquid collection bag, and a negative pressure suction connector (21) is provided on the connecting seat (2) to communicate with the inside of the sealing cover (3).

2. The collection device for preventing leakage of exudate from the drainage tube according to claim 1, characterized in that: A one-way valve is provided on the negative pressure air extraction connector (21).

3. The collection device for preventing leakage of exudate from the drainage tube according to claim 2, characterized in that: The sealing cover (3) is a deformable structure.

4. The collection device for preventing leakage of exudate from the drainage tube according to claim 3, characterized in that: A negative pressure suction port (32) is provided on the sealing cover (3) to connect to the negative pressure suction connector (21).

5. The collection device for preventing leakage of exudate from the drainage tube according to claim 4, characterized in that: The bottom edge of the sealing cover (3) is provided with a negative pressure sealing groove (33), and the negative pressure sealing groove (33) is connected to the negative pressure suction connector (21) through the suction pipe (331); a one-way valve is installed in the suction pipe (331).

6. The collection device for preventing leakage of seepage from the drainage tube according to claim 1, characterized in that: Two connecting ears (31) are symmetrically arranged on the outer wall of the sealing cover (3) for connecting the elastic band (4).

7. The collection device for preventing leakage of exudate from the drainage tube according to claim 6, characterized in that: The end of the elastic band (4) is provided with Velcro or hooks (41) for splicing.

8. The collection device for preventing leakage of exudate from the drainage tube according to any one of claims 1-7, characterized in that: The liquid collection bag is a first liquid collection bag (5) that is fixedly connected to the outer wall of the sealing cover (3); the top of the first liquid collection bag (5) is provided with a liquid collection port (51) that communicates with the bottom of the sealing cover (3), and a drain valve (52) is provided at its bottom.

9. The collection device for preventing leakage of exudate from the drainage tube according to any one of claims 1-7, characterized in that: The liquid collection bag is a second type liquid collection bag (7) connected to the bottom of the sealing cover (3), and the bottom of the sealing cover (3) is provided with a sealing joint (71) that is detachably connected to the second type liquid collection bag (7).

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