Negative pressure drainage dressing

Abstract

The negative pressure drainage dressing comprises a dressing body, a flexible sealing film used for covering the dressing body to form sealing is arranged on the dressing body, a negative pressure assembly which is communicated with the dressing body and generates negative pressure is arranged on the flexible sealing film, and a notch is formed in the position, at the application wound surface, of the bottom of the dressing body. The dressing has the advantages of avoiding adhesion between the dressing and a wound surface and relieving pain.

Description

Technical Field

[0001] The present invention relates to the technical field of wound dressings, and particularly to a negative pressure drainage dressing. Background Art

[0002] Negative pressure wound treatment technology is a new technology developed in recent years for treating wounds. It uses a sealing film to seal an open wound, and a special negative pressure machine is used to generate a certain negative pressure, which acts on the debrided wound through a drainage tube and a dressing.

[0003] At present, the main body of the negative pressure drainage material on the market is mostly porous foam or sponge, and the side close to the wound is a flat surface. During use, since the dressing is applied to the wound / wound area and is on the same plane as the surrounding skin, when negative pressure drainage is implemented, in order to avoid blockage of the negative pressure device or prevent the infection from getting worse, the suction force of continuous negative pressure is often relatively large. Under the action of negative pressure suction, the negative pressure drainage dressing will generate a relatively large pressure that continuously acts on the wound surface. This often causes pain in the patient's wound when the negative pressure suction operation is performed on the wound, and even in many patients, the pain level is relatively severe and difficult to bear.

[0004] In addition, due to the action of continuous negative pressure suction, the newly formed granulation tissue on the wound surface of the current negative pressure drainage dressing material is prone to grow and embed into the dressing, and it is easy to cause secondary injuries and pain when changing the dressing or removing it. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a negative pressure drainage dressing with a simple structure and capable of relieving pain.

[0006] To solve the above technical problem, the present invention adopts the following technical solutions: A negative pressure drainage dressing includes a dressing body, a flexible sealing film is provided on the dressing body for covering the dressing body to form a seal, a negative pressure component communicating with the dressing body and generating negative pressure is provided on the flexible sealing film, and a notch is provided at the bottom of the dressing body at the wound-applying position.

[0007] As a further improvement of the above technical solution: The negative pressure component includes a suction cup and a negative pressure tube. The suction cup is provided on the flexible sealing film and communicates with the dressing body. One end of the negative pressure tube is connected to the suction cup, and the other end is connected to an external negative pressure device.

[0008] A perforated silicone gel film for closing the notch is provided at the bottom of the dressing body.

[0009] A foam sponge is provided in the notch, and the volume of the foam sponge is smaller than that of the notch.

[0010] The notch is filled with a foam sponge.

[0011] A soluble water-absorbing sponge is provided inside the notch.

[0012] A perforated plastic plate is provided at the top of the notch.

[0013] Compared with the prior art, the advantages of the present invention are as follows: When the negative pressure drainage dressing of the present invention is used, the dressing body is applied and fixed on the wound surface, the flexible sealing film forms a covering seal for the dressing body, and then a negative pressure is generated in the sealed space through the negative pressure component to drain the exudate on the wound surface. Compared with the existing negative pressure dressings, the present invention forms a hollow structure by providing a notch at the bottom of the dressing body, and the pressure generated by the negative pressure on the dressing body is dispersed to the dressing body of the non-hollowed part to contact the normal skin, so that the pressure acting on the wound surface is greatly reduced, achieving the purpose of alleviating pain. In addition, the hollow structure formed at the notch can also prevent excessive growth of granulation tissue from adhering to the dressing body, prevent secondary damage to the wound surface when changing the dressing, and improve the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention.

[0015] Figure 2 It is a schematic structural diagram of Embodiment 2 of the present invention.

[0016] Figure 3 It is a schematic structural diagram of Embodiment 3 of the present invention.

[0017] Figure 4 It is a schematic structural diagram of Embodiment 4 of the present invention.

[0018] Each label in the figure represents: 1. Dressing body; 11. Notch; 2. Flexible sealing film; 3. Negative pressure component; 31. Suction cup; 32. Negative pressure tube; 4. Perforated silicone gel film; 5. Foam sponge; 6. Soluble water-absorbing sponge; 7. Perforated plastic plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will be further described in detail below with reference to the accompanying drawings of the specification and specific embodiments.

[0020] Embodiment 1: As Figure 1As shown in the figure, the first embodiment of the negative pressure drainage dressing of the present invention includes a dressing body 1. A flexible sealing film 2 is provided on the dressing body 1 for covering the dressing body 1 to form a seal. A negative pressure component 3 communicating with the dressing body 1 and generating negative pressure is provided on the flexible sealing film 2. A notch 11 is provided at the bottom of the dressing body 1 at the wound dressing area. When in use, the dressing body 1 is fixed on the wound surface by dressing. The flexible sealing film 2 forms a covering seal on the dressing body 1, and then the negative pressure component 3 generates negative pressure in the sealed space to drain the exudate on the wound surface. Compared with the existing negative pressure dressings, in the present invention, a notch 11 is provided at the bottom of the dressing body 1 to form a hollow structure, and the pressure generated by the negative pressure on the dressing body 1 is dispersed to the part of the dressing body 1 without hollowing to contact the normal skin, so that the pressure acting on the wound surface is greatly reduced, achieving the purpose of alleviating pain. In addition, the hollow structure formed at the notch 11 can also prevent the overgrowth of granulation tissue from adhering to the dressing body 1, prevent secondary damage to the wound surface when changing the dressing, and improve the treatment effect.

[0021] In this embodiment, the negative pressure component 3 includes a suction cup 31 and a negative pressure tube 32. The suction cup 31 is provided on the flexible sealing film 2 and communicates with the dressing body 1. One end of the negative pressure tube 32 is communicated with the suction cup 31, and the other end is connected to an external negative pressure device. By connecting the negative pressure device through the negative pressure tube 32, the negative pressure is transmitted to the dressing body 1 through the suction cup 31, and its structure is simple and reliable.

[0022] Embodiment 2: As Figure 2 shown in the figure, the second embodiment of the negative pressure drainage dressing of the present invention is basically the same as Embodiment 1, except that: In this embodiment, a porous silicone gel film 4 for closing the notch 11 is provided at the bottom of the dressing body 1. In this structure, the provision of the porous silicone gel film 4 can further prevent the overgrowth of granulation tissue from adhering to the dressing body 1, and at the same time will not affect the drainage effect.

[0023] In this embodiment, a foam sponge 5 is provided in the notch 11, and the volume of the foam sponge 5 is smaller than that of the notch 11. In this structure, setting the foam sponge 5 in the notch 11 can improve the drainage effect. The foam sponge 5 is softer, has a lower density and larger pores compared with the dressing body 1, and generates less pressure on the wound surface under the action of negative pressure, thus alleviating pain. In addition, in this embodiment, the volume of the foam sponge 5 is smaller than that of the notch 11. When under negative pressure, the dressing body 1 shrinks due to negative pressure, avoiding a large extrusion force acting on the wound surface when the notch 11 shrinks and squeezes the foam sponge 5. Embodiment 3: As Figure 3 shown in the figure, the third embodiment of the negative pressure drainage dressing of the present invention is basically the same as Embodiment 2, except that: In this embodiment, the notch 11 is filled with a foam sponge 5. In this structure, filling the foam sponge 5 has a better drainage effect than placing a small-sized foam sponge 5 in Embodiment 2.

[0024] Embodiment 4: As Figure 4 shown, the fourth embodiment of the negative pressure drainage dressing of the present invention is basically the same as Embodiment 2, and the only difference is that: In this embodiment, a soluble water-absorbing sponge 6 is arranged in the notch 11. In this structure, the soluble water-absorbing sponge 6 has strong water absorption, and at the same time, it can be dissolved into a flowing gel or liquid after absorbing water. In this way, it can not only ensure good liquid absorption and drainage, but also, during negative pressure drainage, since the absorbed exudate gradually becomes a flowing gel or liquid and is drained out of the body, this can avoid the adhesion between the dressing and the wound surface. At the same time, since it gradually becomes a flowing state above the wound surface, it can absorb and reduce its acting force on the wound surface. And the drainage effect is better.

[0025] In this embodiment, a perforated plastic plate 7 is arranged at the top of the notch 11. In this structure, setting the perforated plastic plate 7 plays a supporting role, improves the pressure dispersion effect, and further alleviates the pain of the patient.

[0026] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of the protection of the technical solution of the present invention.

Claims

1. A negative pressure drainage dressing, characterized in that: It includes a dressing body (1), a flexible sealing film (2) is arranged on the dressing body (1) for covering the dressing body (1) to form a seal, a negative pressure assembly (3) which is communicated with the dressing body (1) and generates negative pressure is arranged on the flexible sealing film (2), and a notch (11) is arranged at the bottom of the dressing body (1) at the wound dressing position.

2. The negative pressure drainage dressing according to claim 1, wherein: The negative pressure assembly (3) includes a suction cup (31) and a negative pressure tube (32), the suction cup (31) is arranged on the flexible sealing film (2) and communicated with the dressing body (1), one end of the negative pressure tube (32) is communicated with the suction cup (31), and the other end is connected to an external negative pressure device.

3. The negative pressure drainage dressing according to claim 1 or 2, characterized in that: A porous silicone gel film (4) for closing the notch (11) is arranged at the bottom of the dressing body (1).

4. The negative pressure drainage dressing according to claim 3, wherein: A foam sponge (5) is arranged in the notch (11), and the volume of the foam sponge (5) is smaller than that of the notch (11).

5. The negative pressure drainage dressing according to claim 3, characterized in that: The notch (11) is filled with a foam sponge (5).

6. The negative pressure drainage dressing according to claim 3, characterized in that: A soluble water-absorbing sponge (6) is arranged in the notch (11).

7. The negative pressure drainage dressing according to claim 6, wherein: A perforated plastic plate (7) is arranged at the top of the notch (11).

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