Postoperative negative pressure drainage and dressing device for orthopedic wounds

Abstract

This utility model relates to the field of drainage and dressing technology, and particularly to an integrated device for negative pressure drainage and dressing of postoperative orthopedic wounds. The technical solution includes a sealing layer, with a negative pressure suction cup sealed and adsorbed on the upper surface of the sealing layer, and a conduit connected to the suction cup; a first sealing frame is located on the bottom surface of the sealing layer, a first breathable layer is located between the first sealing frames, and an absorbent component for absorbing wound fluid is located on the bottom surface of the first breathable layer; and a dressing layer is attached to the skin on the bottom surface of the absorbent component. This utility model eliminates the need for separate installation of the drainage device and dressing, greatly reducing operational steps, significantly improving work efficiency, reducing the workload caused by cumbersome operations, and reducing the risk of infection from repeated operations. Furthermore, it better conforms to the wound site, remains stable, and is not easily displaced, providing continuous and stable protection for wound healing and effectively promoting wound recovery.

Description

Technical Field

[0001] This utility model relates to the field of drainage and dressing technology, and in particular to an integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds. Background Technology

[0002] Postoperative negative pressure wound therapy (NPWT) and dressings are important auxiliary methods for promoting wound healing and preventing complications such as infection in orthopedic surgery. NPWT creates a sub-atmospheric pressure environment at the wound site using a negative pressure suction device, promptly absorbing blood and exudate, reducing local fluid accumulation, lowering the risk of infection, promoting granulation tissue growth, and accelerating wound healing. Its advantages include effectively removing necrotic tissue and exudate, keeping the wound clean, improving local blood circulation, facilitating tissue repair, reducing the frequency of dressing changes, alleviating patient pain, and reducing the workload of medical staff. In existing wound management methods, negative pressure drainage devices and dressings are often used separately. This increases the operational steps and workload for medical staff, and it is difficult to balance the absorbency and breathability of the dressing, failing to provide a good recovery environment for the wound. Therefore, an integrated device for postoperative negative pressure wound therapy and dressings in orthopedic surgery is proposed. Utility Model Content

[0003] The purpose of this invention is to address the problem that in the prior art, negative pressure drainage devices and dressings are often used separately in wound treatment. This increases the number of steps and workload for medical staff, and it is difficult to balance the absorbency and breathability of the dressings, thus failing to provide a good recovery environment for the wound. The invention proposes an integrated device for negative pressure drainage and dressings for postoperative wounds in orthopedics.

[0004] The technical solution of this utility model: an integrated device for negative pressure drainage and dressing of postoperative orthopedic wounds, comprising: a sealing layer, wherein a negative pressure suction cup is sealed and adsorbed on the upper surface of the sealing layer, and a conduit is connected to the negative pressure suction cup; a first sealing frame is provided on the bottom surface of the sealing layer, a first breathable layer is provided between the first sealing frames, and a liquid absorption component for absorbing wound fluid is provided on the bottom surface of the first breathable layer; and a dressing layer is provided on the bottom surface of the liquid absorption component and adhered to the skin.

[0005] Optionally, the liquid absorption assembly includes a second sealing frame, an absorption layer and a second breathable layer are fixedly disposed between the second sealing frames, and the absorption layer is located directly above the second breathable layer. Multiple liquid absorption blocks are fixedly disposed through the absorption layer, and a liquid absorption port is provided at the lower end of each liquid absorption block.

[0006] Optionally, the bottom surface of the adhesive layer is provided with a groove, and an anti-deformation frame is fixedly installed inside the groove.

[0007] Optionally, the sealing layer is made of a polyurethane material with good flexibility and biocompatibility, and has a thickness of 0.5-1.5 mm.

[0008] Optionally, the suction cup and the adsorption surface of the sealing layer are provided with an annular sealing gasket, which is made of silicone material.

[0009] Optionally, the inner wall of the conduit is provided with a spiral reinforcing rib, which is made of plastic material.

[0010] Optionally, the absorbent layer is made of sodium carboxymethyl cellulose hydrogel material.

[0011] Optionally, the second breathable layer is a polytetrafluoroethylene microporous membrane with a microporosity of 50%-70%.

[0012] Optionally, the anti-deformation frame is made of rubber with a thickness of 0.1-0.3 mm.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] This invention achieves efficient and convenient wound treatment through an integrated design of a sealing layer, a negative pressure suction cup, a catheter, a first sealing frame, a first breathable layer, an absorbent component, and a dressing layer. The negative pressure suction cup, sealed and adsorbed on the upper surface of the sealing layer, is connected to the catheter, which can quickly establish a negative pressure drainage channel to drain wound exudate in a timely manner. The basic structure formed by the first sealing frame and the first breathable layer ensures the stability and initial breathability of the device. At the same time, the integrated structure eliminates the need for medical staff to install the drainage device and cover the dressing separately during operation. The dual functions of negative pressure drainage and wound covering can be completed in a single operation, greatly reducing the number of operation steps, significantly improving work efficiency, reducing the workload caused by cumbersome operations, and also reducing the risk of infection that may be introduced due to multiple operations.

[0015] Furthermore, the absorption assembly, consisting of a second sealing frame, an absorbent layer, a second breathable layer, and an absorbent block, along with a matching dressing layer, achieves a superior healing environment for the wound. The absorbent layer uses sodium carboxymethyl cellulose hydrogel, a material with superior absorbency and retention, capable of rapidly absorbing and locking in large amounts of fluid from the wound, keeping the wound surface dry and preventing slow healing or infection due to fluid immersion. The second breathable layer uses a polytetrafluoroethylene microporous membrane with a porosity between 50% and 70%. This special material ensures good breathability, allowing gas exchange between the wound and the outside environment to maintain a suitable physiological environment, while also providing waterproofing to prevent external moisture from entering and contaminating the wound. The absorbent block and its lower suction port further optimize the fluid absorption path and enhance absorption efficiency. In addition, the groove and anti-deformation frame design on the bottom of the dressing layer enable the device to better fit the wound area, remain stable, and not easily shift, providing continuous and stable protection for wound healing and effectively promoting wound recovery. Attached Figure Description

[0016] Figure 1 A schematic diagram of an integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds is provided.

[0017] Figure 2 for Figure 1 A schematic diagram of the split structure;

[0018] Figure 3 for Figure 2 Schematic diagram of the middle absorption layer;

[0019] Figure 4 for Figure 2 A schematic diagram showing the disassembly of the middle adhesive layer and the anti-deformation frame.

[0020] Figure label:

[0021] 1. Sealing layer; 2. Negative pressure suction cup; 3. Conduit; 4. First sealing frame; 5. First breathable layer;

[0022] 6. Liquid absorption assembly; 61. Second sealing frame; 62. Absorbent layer; 63. Second breathable layer; 64. Liquid absorption block; 65. Liquid absorption port;

[0023] 7. Adhesive layer; 8. Groove; 9. Anti-deformation frame. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0025] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example

[0030] like Figure 1 and Figure 2As shown, the orthopedic postoperative wound negative pressure drainage and dressing integrated device proposed in this utility model includes: a sealing layer 1, as an important component of the device, is made of polyurethane material with good flexibility and biocompatibility, with a thickness set between 0.5-1.5 mm. Its good flexibility allows it to closely conform to wounds of different shapes, ensuring a sealing effect; while its biocompatibility effectively reduces the risk of adverse reactions such as allergies during patient use, improving safety and comfort. A negative pressure suction cup 2 is sealed and adsorbed on the upper surface of the sealing layer 1, and the adsorption surface of the negative pressure suction cup 2 and the sealing layer 1 is equipped with an annular sealing gasket made of silicone material. The high elasticity and good sealing performance of the silicone material further enhance the sealing between the negative pressure suction cup 2 and the sealing layer 1, ensuring no air leakage during negative pressure drainage, thereby maintaining a stable negative pressure environment and ensuring the drainage effect. A conduit 3 is connected to the negative pressure suction cup 2, and the spiral reinforcing ribs inside the conduit wall are made of plastic material. It significantly enhances the pressure resistance of catheter 3, enabling it to maintain a good shape under negative pressure, effectively preventing catheter 3 from collapsing and ensuring unobstructed drainage.

[0031] Furthermore, the first sealing frame 4 located on the bottom surface of the sealing layer 1 cooperates with the first breathable layer 5. The first sealing frame 4 plays the role of fixing the boundary and initial sealing, while the first breathable layer 5 provides a moderate breathable environment for the wound while ensuring a certain degree of sealing, which helps to maintain the stability of the local microenvironment of the wound and promotes wound healing.

[0032] like Figure 1 , Figure 2 and Figure 4 As shown, the adhesive layer 7, which adheres to the skin from the bottom surface of the absorbent component 6, is ingeniously designed. An anti-deformation frame 9 is fixedly installed inside a groove 8 on its bottom surface. The anti-deformation frame 9 is made of rubber with a thickness of 0.1-0.3 mm. This rubber material has good elasticity and toughness, effectively preventing the adhesive layer 7 from being affected by external pressure or deformation during use, thus ensuring the device functions stably under various conditions.

[0033] like Figure 2 and Figure 3As shown, the absorbent assembly 6 is the core component of the entire device for absorbing accumulated fluid. It includes a second sealing frame 61, an absorbent layer 62 fixedly disposed between the second sealing frames 61, and a second breathable layer 63, which have clearly defined functions and work together. The absorbent layer 62 is made of sodium carboxymethyl cellulose hydrogel material, which has a strong water absorption and retention capacity, enabling it to quickly absorb the fluid oozing from the wound, keeping the wound dry and clean, and creating favorable conditions for wound healing. The absorbent layer 62 is located directly above the second breathable layer 63, which is a polytetrafluoroethylene microporous membrane with a microporosity of 50%-70%. This characteristic allows the second breathable layer 63 to ensure good air permeability, allowing air to circulate in the wound area and preventing bacterial growth due to heat and moisture, while also possessing excellent waterproof properties to prevent external moisture from entering the wound, providing double protection for the wound. In addition, multiple suction blocks 64 fixedly penetrate the absorbent layer 62, and suction ports 65 opened at their lower ends can accurately locate and quickly absorb wound fluid, further improving the working efficiency of the suction component 6.

[0034] In this embodiment, the patient's wound is routinely cleaned and disinfected to ensure that the skin around the wound is clean and free of foreign objects. The device is taken out of the sterile packaging, the dressing layer 7 is held, and the groove 8 on its bottom surface is aligned with the wound. The dressing layer 7 is slowly applied to the skin around the wound, ensuring that the anti-deformation frame 9 completely covers the wound area, which plays a supporting role and prevents the dressing layer from deforming. At the same time, the dressing layer 7 is tightly adhered to the skin to ensure a seal.

[0035] Next, connect the negative pressure suction cup 2 to the external negative pressure drainage device via the conduit 3. Because the conduit 3 has spiral reinforcing ribs inside its wall, the connection process can be carried out with confidence, without worrying about the conduit collapsing under negative pressure. After connection, turn on the external negative pressure drainage device. At this time, the negative pressure suction cup 2 ensures a good seal through the annular sealing gasket between itself and the sealing layer 1, creating a negative pressure state inside the device.

[0036] Under negative pressure, the fluid accumulated in the wound is drawn in through the suction port 65 at the lower end of the suction block 64 in the suction assembly 6. The absorbent layer 62 is made of sodium carboxymethyl cellulose hydrogel material, which has a strong absorption capacity and can quickly absorb the fluid and store it in its own structure. The second breathable layer 63 is a polytetrafluoroethylene microporous membrane with a porosity between 50% and 70%, which ensures good air permeability while preventing liquid leakage and ensuring that the fluid can only flow towards the conduit 3 through the absorbent layer 62.

[0037] The first breathable layer 5 and the second breathable layer 63 work together to maintain air circulation around the wound, providing a good environment for wound healing. The sealing layer 1 is made of polyurethane material with good flexibility and biocompatibility, with a thickness between 0.5 and 1.5 mm. It can conform to the shape of the patient's skin without irritating the skin, while ensuring the airtightness of the device.

[0038] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds, characterized in that, include: A sealing layer (1) is provided with a negative pressure suction cup (2) on its upper surface, and a conduit (3) is provided on the negative pressure suction cup (2). A first sealing frame (4) is provided on the bottom surface of the sealing layer (1), a first breathable layer (5) is provided between the first sealing frames (4), and a liquid absorption component (6) for absorbing wound fluid is provided on the bottom surface of the first breathable layer (5). An adhesive layer (7) is attached to the skin on the bottom surface of the liquid-absorbing component (6).

2. The integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds according to claim 1, characterized in that, The liquid absorption assembly (6) includes a second sealing frame (61), an absorption layer (62) and a second breathable layer (63) are fixedly disposed between the second sealing frame (61), and the absorption layer (62) is located directly above the second breathable layer (63). Multiple liquid absorption blocks (64) are fixedly inserted through the absorption layer (62), and a liquid absorption port (65) is opened at the lower end of the liquid absorption block (64).

3. The integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds according to claim 1, characterized in that, The bottom surface of the adhesive layer (7) is provided with a groove (8), and an anti-deformation frame (9) is fixedly installed inside the groove (8).

4. The integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds according to claim 1, characterized in that, The sealing layer (1) is made of polyurethane material with good flexibility and biocompatibility, and its thickness is 0.5-1.5 mm.

5. The integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds according to claim 1, characterized in that, The negative pressure suction cup (2) and the adsorption surface of the sealing layer (1) are provided with an annular sealing gasket, which is made of silicone material.

6. The integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds according to claim 1, characterized in that, The conduit (3) has a spiral reinforcing rib inside its wall, and the spiral reinforcing rib is made of plastic material.

7. The integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds according to claim 2, characterized in that, The absorbent layer (62) is made of sodium carboxymethyl cellulose hydrogel material.

8. The integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds according to claim 2, characterized in that, The second breathable layer (63) is a polytetrafluoroethylene microporous membrane with a microporosity of 50%-70%.

9. The integrated device for negative pressure drainage and dressing of orthopedic postoperative wounds according to claim 3, characterized in that, The anti-deformation frame (9) is made of rubber with a thickness of 0.1-0.3 mm.

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