Multilayer drainage dressing with negative pressure decontamination function

Abstract

The utility model relates to the technical field of medical materials, functional materials and wound dressings, in particular to a multilayer drainage dressing with a negative pressure decontamination function, which comprises a support sealing layer, a medical breathable film, a drainage layer, a wound contact layer, a negative pressure suction layer and a connecting component. The drainage layer is arranged below the medical breathable film, the wound contact layer is arranged below the drainage layer, the negative pressure suction layer is arranged above the supporting sealing layer, and the connecting assembly is arranged above the negative pressure suction layer; through the design of the multi-layer structure, the wound dressing has excellent mechanical performance and a stable gradient structure, the completeness of the dressing can be kept, secondary dressing change of a patient is facilitated, meanwhile, excessive seepage can be rapidly discharged from a wound, a suitable healing environment of a wound surface is maintained, wound healing is accelerated, and the wound dressing has a good application prospect. Different active ingredients can be added into the wound contact layer in advance to nurse the wound in a targeted manner, so that the pain of a patient is reduced.

Description

Technical Field

[0001] The utility model relates to the technical fields of medical materials, functional materials and wound dressings, in particular to a multi-layer drainage dressing with a negative pressure cleaning function. Background Art

[0002] Chronic wounds are difficult to treat and have become a major problem plaguing the medical community. The main reason is that poor blood circulation in the wound prevents medication and oxygen from reaching the affected area, causing gradual cell death in the wound. This vicious cycle makes wound healing difficult. Vacuum-assisted wound closure often involves applying negative pressure to the wound surface continuously or intermittently with a wound dressing system to achieve specific therapeutic and nursing effects.

[0003] Existing wound dressings often have problems such as long wound healing period, easy contamination or secondary infection of the wound surface, fluid accumulation in the wound cavity, and limited drainage of the dressing when used for wound treatment;

[0004] Therefore, in view of the problems that the above-mentioned existing wound dressings often have a long wound healing period, the wound is easily contaminated or infected again, the wound cavity accumulates fluid, and the drainage of the dressing is limited when used for wound treatment, a multi-layer drainage dressing with a negative pressure cleaning function can be designed. Through the multi-layer structure design, it has excellent mechanical properties, so that the wound dressing has a stable gradient structure, which can maintain the integrity of the dressing itself, facilitate the patient to perform a second dressing change, and at the same time can effectively discharge excess exudate and promote wound healing. Utility Model Content

[0005] In order to overcome the problems of long wound healing period, easy contamination or secondary infection of wound surface, fluid accumulation in wound cavity and limited drainage of dressing when existing wound dressing is used for wound treatment.

[0006] The technical solution of the utility model is: a multi-layer drainage dressing with a negative pressure cleaning function, comprising a supporting sealing layer, a medical breathable membrane, a drainage layer, a wound contact layer, a negative pressure attraction layer and a connecting assembly, wherein the medical breathable membrane is arranged below the supporting sealing layer, the drainage layer is arranged below the medical breathable membrane, the wound contact layer is arranged below the drainage layer, the negative pressure attraction layer is arranged above the supporting sealing layer, and the connecting assembly is arranged above the negative pressure attraction layer.

[0007] Preferably, the various layers of the overall dressing are connected by setting a supporting sealing layer, and can be applied to the patient's skin surface to ensure a sealed environment. It is convenient to provide a negative pressure environment for the wound by setting a negative pressure attraction layer, which can be connected to an external negative pressure device through a connecting component. The wound contact layer is set to directly contact the wound to reduce wound irritation. The drainage layer can effectively absorb and drain wound exudate to prevent fluid accumulation in the wound cavity. The medical breathable membrane can be set so that the wound exudate can be quickly evaporated after being absorbed by the drainage layer.

[0008] Preferably, the wound contact layer contacts the patient's wound surface and is made of medical sterile gauze.

[0009] Preferably, the drainage layer is fixedly installed above the wound contact layer and is made of porous foam material.

[0010] Preferably, the medical breathable membrane is fixedly installed above the drainage layer, and the medical breathable membrane is made of polypropylene material.

[0011] Preferably, the supporting sealing layer is fixedly installed above the medical breathable membrane, a through hole is reserved on the surface of the supporting sealing layer, the negative pressure attraction layer is arranged above the supporting sealing layer, the negative pressure attraction layer is connected to the supporting sealing layer through the through hole, and a suction cup is arranged above the negative pressure attraction layer, and the suction cup is connected to the negative pressure attraction layer.

[0012] Preferably, the connecting assembly includes a plug interface and a connecting hose. The plug interface is provided above the suction cup, and a connecting hose is provided inside the plug interface. The connecting hose is connected to the suction cup through the plug interface.

[0013] Preferably, a fixing tape is fixedly mounted on the upper surface of the supporting sealing layer, and a plurality of groups of the fixing tapes are provided.

[0014] Beneficial effects of the utility model:

[0015] 1. Compared with existing wound dressings used for wound treatment, which often have problems such as long wound healing period, easy contamination or secondary infection of the wound, fluid accumulation in the wound cavity, and limited drainage of the dressing, the utility model has a multi-layer structure design to make the wound dressing have excellent mechanical properties and a stable gradient structure, which can maintain the integrity of the dressing itself, facilitate the patient to perform secondary dressing changes, and at the same time can quickly discharge excess exudate from the wound, maintain a suitable healing environment for the wound, accelerate wound healing, and the wound contact layer can be added with different active ingredients in advance to provide targeted care for the wound and reduce the patient's pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the first three-dimensional structure of the multi-layer drainage dressing with negative pressure cleaning function of the present invention;

[0017] Figure 2 Shown is a schematic diagram of the exploded three-dimensional structure of the multi-layer drainage dressing with negative pressure cleaning function of the present invention;

[0018] Figure 3 Shown is a schematic diagram of the cross-sectional three-dimensional structure of the multi-layer drainage dressing with negative pressure cleaning function of the present invention;

[0019] Figure 4Shown is a schematic diagram of the second three-dimensional structure of the multi-layer drainage dressing with negative pressure cleaning function of the present invention;

[0020] Explanation of the accompanying drawings: 1. Support sealing layer; 101. Through hole; 2. Medical breathable membrane; 3. Drainage layer; 4. Wound contact layer; 5. Negative pressure suction layer; 501. Suction cup; 502. Plug port; 503. Connecting hose; 6. Fixing tape. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] See also Figures 1-4 The utility model provides an embodiment: a multi-layer drainage dressing with a negative pressure cleaning function, comprising a supporting sealing layer 1, a medical breathable membrane 2, a drainage layer 3, a wound contact layer 4, a negative pressure attraction layer 5 and a connecting component, wherein the medical breathable membrane 2 is arranged below the supporting sealing layer 1, the drainage layer 3 is arranged below the medical breathable membrane 2, the wound contact layer 4 is arranged below the drainage layer 3, the negative pressure attraction layer 5 is arranged above the supporting sealing layer 1, and the connecting component is arranged above the negative pressure attraction layer 5; by setting The supporting sealing layer 1 connects the various layers of the overall dressing and can be applied to the patient's skin surface to ensure a sealed environment. It is convenient to provide a negative pressure environment for the wound by setting a negative pressure attraction layer 5, which can be connected to an external negative pressure device through a connecting component. By setting a wound contact layer 4, direct contact with the wound can be achieved to reduce wound irritation. By setting a drainage layer 3, wound exudate can be effectively absorbed and drained to prevent fluid accumulation in the wound cavity. By setting a medical breathable membrane 2, the wound exudate can be absorbed by the drainage layer 3 and then evaporated quickly.

[0023] See also Figure 1-Figure 2 In this embodiment, the wound contact layer 4 is in contact with the patient's wound, and the wound contact layer 4 is composed of medical sterile gauze; by using sterile gauze to form the wound contact layer 4 and directly contacting the patient's wound, different ingredients with different functions can be added according to the different wounds of the patients, so as to promote healing and care for the wound in a targeted manner; the drainage layer 3 is fixedly installed on the top of the wound contact layer 4, and is composed of a porous foam material; the porous foam material can effectively absorb and disperse the exudate from the wound, keep the wound dry, and prevent fluid accumulation in the wound cavity; the medical breathable membrane 2 is fixedly installed on the top of the drainage layer 3, and the medical breathable membrane 2 is composed of polypropylene material; the high air permeability of the medical breathable membrane 2 can make the wound exudate attracted by the drainage layer 3 quickly evaporate through the medical breathable membrane 2, further improving the water absorption capacity of the dressing and shortening the healing period.

[0024] See also Figure 3-Figure 4In this embodiment, the supporting sealing layer 1 is fixedly installed above the medical breathable membrane 2, and a through hole 101 is reserved on the surface of the supporting sealing layer 1. The negative pressure attraction layer 5 is arranged above the supporting sealing layer 1, and the negative pressure attraction layer 5 is connected to the supporting sealing layer 1 through the through hole 101. A suction cup 501 is arranged above the negative pressure attraction layer 5, and the suction cup 501 is connected to the negative pressure attraction layer 5; by setting the negative pressure attraction layer 5 and the supporting sealing layer 1 to be connected through the through hole 101, the suction cup 501 can be connected to the connecting component, thereby connecting to an external negative pressure device; The connecting component includes a plug interface 502 and a connecting hose 503. The plug interface 502 is provided above the suction cup 501, and a connecting hose 503 is provided inside the plug interface 502. The connecting hose 503 is connected to the suction cup 501 through the plug interface 502; by providing the connecting hose 503, the suction cup 501 can be connected to the external negative pressure equipment through the plug interface 502; a fixing tape 6 is fixedly installed on the upper surface of the supporting sealing layer 1, and a plurality of fixing tapes 6 are provided; by providing the fixing tape 6, the entire dressing can be attached to the patient's skin surface to prevent the dressing from falling off.

[0025] During the work, different functional components are added to the wound contact layer according to the condition of the patient's wound, and the whole dressing is attached to the patient's skin surface so that the wound contact surface is in direct contact with the wound on the patient's skin;

[0026] The supporting sealing layer 1 is tightly attached to the skin surrounding the patient's wound to ensure the sealing of the internal environment of the supporting sealing layer 1. The connecting hose 503 is inserted into the plug port 502 to connect to the suction cup 501, and the other end is connected to an external negative pressure device. Thus, the suction cup 501 provides a negative pressure environment inside the supporting sealing layer 1, effectively draining excess exudate and promoting wound healing.

[0027] The drainage layer 3 is used to absorb and disperse the exudate discharged from the wound, keeping the wound surface dry and preventing fluid accumulation in the wound cavity. The medical breathable membrane 2 can also be used to volatilize the absorbed exudate in time, further improving the water absorption capacity of the dressing and shortening the healing period.

[0028] The multi-layer structure design makes the wound dressing have excellent mechanical properties and a stable gradient structure, which can maintain the integrity of the dressing itself and facilitate the patient to perform a second dressing change.

[0029] Through the above steps, the multi-layer structure design makes the wound dressing have excellent mechanical properties and a stable gradient structure, which can maintain the integrity of the dressing itself, facilitate the patient to perform a second dressing change, and at the same time quickly discharge excess exudate from the wound, maintain a suitable healing environment for the wound, accelerate wound healing, and the wound contact layer can be added with different active ingredients in advance to provide targeted care for the wound, reduce the patient's pain, and solve the problems of long wound healing cycle, easy contamination or secondary infection of the wound, fluid accumulation in the wound cavity, and limited dressing drainage when the existing wound dressing is used for wound treatment.

[0030] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. A multi-layer drainage dressing with negative pressure cleaning function, comprising a supporting sealing layer (1); characterized in that: The invention also comprises a medical breathable membrane (2), a drainage layer (3), a wound contact layer (4), a negative pressure attraction layer (5) and a connecting assembly, wherein the medical breathable membrane (2) is arranged below the supporting sealing layer (1), the drainage layer (3) is arranged below the medical breathable membrane (2), the wound contact layer (4) is arranged below the drainage layer (3), the negative pressure attraction layer (5) is arranged above the supporting sealing layer (1), and the connecting assembly is arranged above the negative pressure attraction layer (5).

2. The multi-layer drainage dressing with negative pressure cleaning function according to claim 1, characterized in that: The wound surface contact layer (4) contacts the patient's wound surface, and the wound surface contact layer (4) is made of medical sterile gauze.

3. The multi-layer drainage dressing with negative pressure cleaning function according to claim 1, characterized in that: The drainage layer (3) is fixedly installed above the wound surface contact layer (4) and is made of porous foam material.

4. The multi-layer drainage dressing with negative pressure cleaning function according to claim 1, characterized in that: The medical breathable membrane (2) is fixedly installed above the drainage layer (3), and the medical breathable membrane (2) is made of polypropylene material.

5. The multi-layer drainage dressing with negative pressure cleaning function according to claim 1, characterized in that: The supporting sealing layer (1) is fixedly installed above the medical breathable membrane (2); a through hole (101) is reserved on the surface of the supporting sealing layer (1); the negative pressure attraction layer (5) is arranged above the supporting sealing layer (1); the negative pressure attraction layer (5) is connected to the supporting sealing layer (1) through the through hole (101); a suction cup (501) is arranged above the negative pressure attraction layer (5); and the suction cup (501) is connected to the negative pressure attraction layer (5).

6. The multi-layer drainage dressing with negative pressure cleaning function according to claim 5, characterized in that: The connecting assembly comprises an inserting port (502) and a connecting hose (503). The inserting port (502) is provided above the suction cup (501). The connecting hose (503) is provided inside the inserting port (502). The connecting hose (503) is connected to the suction cup (501) through the inserting port (502).

7. The multi-layer drainage dressing with negative pressure cleaning function according to claim 1, characterized in that: A fixing tape (6) is fixedly mounted on the upper surface of the supporting sealing layer (1), and a plurality of groups of the fixing tapes (6) are provided.

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