A wound negative pressure drainage device

Abstract

The utility model discloses a kind of wound negative pressure drainage devices, it is related to medical instrument technical field, to solve the problem of traditional synchronous drainage flushing resulting in poor wound cleaning. Device is made of medical sponge, S-shaped pipe, catheter, three-way medical stop valve, drainage tube, flushing pipe and protective film kit. Medical sponge is equipped with S-shaped pipe with through-hole, S-shaped pipe is connected with three-way medical stop valve through catheter, valve body is connected with drainage tube and flushing pipe respectively. When using, three-way medical stop valve can be flexibly switched operating mode: first switch to physiological saline injection mode, physiological saline is evenly transported to medical sponge through flushing pipe and S-shaped pipe, and fully contacts and mixes dilution with wound dirt;Switch to negative pressure drainage mode again, and the mixed solution after dilution is completely sucked out through catheter and drainage tube. Accompanying protective film kit realizes wound closure and fixation. The device switches operating mode, significantly improves the effect of wound cleaning, and accelerates wound healing.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a negative pressure drainage device for wounds. Background Technology

[0002] Wound care is a crucial step in promoting patient recovery and preventing complications, and it is especially important for the treatment of non-chronic wounds (such as surgical suture wounds, mechanical trauma wounds, laceration wounds, and superficial second-degree burns). Effective wound care not only involves the timely removal of pathological fluids such as pus from the wound, but also maintaining a suitable moist environment to accelerate wound healing and reduce patient suffering.

[0003] Currently, traditional wound care often employs a simultaneous approach of saline irrigation and negative pressure drainage. The specific procedure involves continuously injecting saline solution into a medical sponge covering the wound while simultaneously activating a negative pressure drainage device. The aim is to clean and moisturize the wound while simultaneously aspirating debris. However, this simultaneous approach has significant drawbacks: due to the immediate suction effect of the negative pressure drainage, the saline solution remains on the wound surface for an extremely short time after being injected into the sponge. This prevents it from fully contacting and mixing with the debris, making it difficult to effectively dilute and remove debris deep within the wound. This not only results in poor wound cleaning but may also leave some debris behind, increasing the risk of infection and delaying the wound healing process. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a negative pressure wound therapy device for wounds, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure wound therapy device, comprising:

[0006] A medical sponge, wherein the medical sponge is applied to the surface of the wound;

[0007] An S-shaped tube is embedded in the medical sponge, and the end of the S-shaped tube extends to the outside of the medical sponge.

[0008] A catheter, one end of which is connected to the end of the S-shaped tube extending to the outside of the medical sponge;

[0009] A three-way medical shut-off valve is connected to the other end of the catheter;

[0010] The drainage tube and the flushing tube are both connected to the three-way medical shut-off valve.

[0011] Furthermore, the medical sponge is filled with pure water or sterile water after it leaves the factory, and the water absorption capacity of the medical sponge is not less than five times its own weight.

[0012] Furthermore, the surface of the S-shaped tube is provided with several evenly distributed through holes, all of which are connected to the interior of the S-shaped tube, so that the S-shaped tube can evenly draw out wound debris or evenly deliver saline solution to the medical sponge.

[0013] Furthermore, the wound negative pressure drainage device also includes a protective film kit, which includes a medical film. The lower surface of the medical film is adhered with a bottom adhesive layer, and the upper surface is adhered with an upper adhesive layer. The medical sponge is used in conjunction with the medical film to fix the medical sponge and seal the medical sponge with the wound.

[0014] Furthermore, the area of ​​the medical film is larger than the area of ​​the medical sponge, so as to completely cover the medical sponge and the surrounding wound area.

[0015] Furthermore, the S-shaped tube, catheter, drainage tube, and flushing tube are all made of medical-grade polyvinyl alcohol and are all transparent.

[0016] This invention provides a negative pressure wound therapy device. Compared with the prior art, it has the following advantages:

[0017] This wound negative pressure drainage device, through a three-way shut-off valve switching mechanism, enables independent and orderly operation of saline injection and negative pressure drainage. During wound treatment, the device can switch to saline injection mode, allowing the saline to fully saturate the medical sponge and evenly cover the wound, ensuring deep contact and thorough mixing and dilution of wound debris, guaranteeing complete dissolution and separation of the debris. It then switches to negative pressure drainage mode to completely aspirate and drain the diluted mixture. This "first thorough dilution, then efficient drainage and removal" switching operation mode significantly improves wound cleanliness, effectively reduces the risk of infection, and accelerates the wound healing process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the drainage and flushing structure of this utility model;

[0020] Figure 3 This is a half-sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the protective film kit in this utility model;

[0022] Figure 5 This is a structural schematic diagram of the present invention in use.

[0023] In the diagram: 1. Medical sponge; 2. S-shaped tube; 21. Through hole; 3. Catheter; 4. Drainage tube; 5. Flushing tube; 6. Three-way medical shut-off valve; 7. Protective film kit; 71. Medical film; 72. Bottom adhesive layer; 73. Top adhesive layer. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution: a negative pressure wound therapy device, comprising a medical sponge 1, which covers the surface of a non-chronic wound, including but not limited to postoperative suture wounds, mechanical trauma, lacerations, and superficial second-degree burns. An S-shaped tube 2 is embedded in the medical sponge 1. The shape of the S-shaped tube 2 allows for the uniform suction of wound debris, such as pus and other pathological fluids, drawn in by the medical sponge 1, and the uniform delivery of saline solution to each area of ​​the medical sponge 1. The end of the S-shaped tube 2 extends to the outside of the medical sponge 1 and is connected to a catheter 3. The catheter 3 is connected to a three-way medical shut-off valve 6. Connecting the drainage tube 4 and the irrigation tube 5, the three-way medical shut-off valve 6 allows the passages of the catheter 3 and drainage tube 4 to be opened while closing the passages of the catheter 3 and irrigation tube 5 during negative pressure drainage. This allows the medical sponge 1 to aspirate wound debris after the drainage tube 4 is connected to the negative pressure drainage device. Similarly, during saline infusion, the three-way medical shut-off valve 6 allows the passages of the catheter 3 and irrigation tube 5 to be opened while closing the passages of the catheter 3 and drainage tube 4. This allows the medical sponge 1 to pump the saline solution to the irrigation tube 5 and then evenly distribute it onto the wound surface.

[0026] After being manufactured, the medical sponge 1 is filled with pure water or sterile water. After being filled with pure water or sterile water, the medical sponge 1 reaches a saturated state, and the water absorption of the medical sponge 1 is no less than five times its own weight. This enables it to effectively drain the wound, keep the wound moist, reduce wound edema, prolong the dressing change cycle, improve patient comfort, and prevent adhesion.

[0027] The surface of the S-shaped tube 2 has several evenly distributed through holes 21, and all the through holes 21 are connected to the interior of the S-shaped tube 2, so that the S-shaped tube 2 can evenly suck up wound dirt or evenly deliver saline to the medical sponge 1.

[0028] The wound negative pressure drainage device also includes a protective film kit 7, which includes a medical film 71. The lower surface of the medical film 71 is adhered with a bottom adhesive 72, and the upper surface is adhered with an upper adhesive 73. When in use, the medical sponge 1 needs to be used with the medical film 71 to fix the medical sponge 1 and seal it with the wound.

[0029] The negative pressure wound drainage device is used as follows:

[0030] 1. Clean and rinse the wound, and dry the skin around the wound;

[0031] 2. Take a medical sponge of appropriate size and type according to the size of the wound, and then apply or pack the medical sponge 1 to the wound;

[0032] 3. Take out the protective film kit 7, peel off the bottom adhesive 72, stick it to cover and seal the wound with the medical sponge 1 as the center, seal the medical sponge 1 and the wound, and then peel off the top adhesive 73 to keep it breathable;

[0033] 4. When saline injection is required, the irrigation tube 5 is connected to the saline pumping device. The catheter 3 and irrigation tube 5 are connected through the three-way medical shut-off valve 6, and the catheter 3 and drainage tube 4 are closed. After the saline pumping device is working, saline is injected into the irrigation tube 5, catheter 3, and S-tube 2 in sequence, and then injected into the medical sponge 1 through the through hole 21. The medical sponge 1 adheres to the wound surface, thereby pumping the saline to the wound surface for cleaning and moisturizing. The injected saline can dilute the dirt on the wound surface.

[0034] 5. Next, the diluted debris from the wound is removed. The drainage tube 4 is connected to the negative pressure drainage device. The three-way medical shut-off valve 6 connects the channels of the catheter 3 and the drainage tube 4, and closes the channels of the catheter 3 and the irrigation tube 5. After the negative pressure drainage device is working, the diluted debris from the wound in the medical sponge enters the S-shaped tube 2 through the through hole 21, and is then pulled out through the catheter 3 and the drainage tube 4.

Claims

1. A negative pressure wound therapy device, characterized in that, include: A medical sponge (1) is placed on the surface of the wound. After production, the sponge (1) is filled with pure or sterile water, and its water absorption capacity is no less than five times its own weight. An S-shaped tube (2) is embedded in the medical sponge (1), with its end extending to the outside of the sponge (1). The surface of the S-shaped tube (2) has several evenly distributed through holes (21), each hole (21) being connected to the wound surface. The internal connection of the S-shaped tube (2) allows the S-shaped tube (2) to uniformly aspirate wound debris or uniformly deliver saline solution to the medical sponge (1); a catheter (3) is connected at one end to the end of the S-shaped tube (2) extending to the outside of the medical sponge (1); a three-way medical shut-off valve (6) is connected to the other end of the catheter (3), and the three-way medical shut-off valve (6) can switch the flow of the catheter (3) and the drainage tube (4) and close the flow. The conduit (3) and the flushing tube (5) are connected, or the conduit (3) and the flushing tube (5) are switched to close the conduit (3) and the drainage tube (4), thereby realizing the switching operation mode of flushing and dilution followed by negative pressure drainage; the drainage tube (4) and the flushing tube (5) are both connected to the three-way medical shut-off valve (6); the protective film kit (7) includes a medical film (71), the lower surface of which is adhered with a bottom adhesive. (72) An upper layer of adhesive tape (73) is adhered to the upper surface. The medical sponge (1) is used in conjunction with the medical film (71) to fix the medical sponge (1) and seal the medical sponge (1) with the wound. The area of ​​the medical film (71) is larger than the area of ​​the medical sponge (1) so as to completely cover the medical sponge (1) and its surrounding wound area. The S-shaped tube (2), catheter (3), drainage tube (4) and irrigation tube (5) are all made of medical grade polyvinyl alcohol and are all transparent.

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