Composite dressing with replaceable water-absorbing inner core

Abstract

The utility model discloses a composite dressing with a replaceable water-absorbing inner core, which sequentially comprises a wound surface contact layer (1), a drainage support layer (2) and a water-blocking breathable layer (3) from inside to outside, a storage device (4), a sucker (5) and a locking mechanism (6) are arranged on the outer side of the water-blocking breathable layer (3), and a strip-shaped water-absorbing inner core (7) is arranged in the storage device (4). One end of the water-absorbing inner core (7) penetrates through the space between the water-blocking breathable layer (3) and the drainage support layer (2) and then is connected to the locking mechanism (6), and a suction pipe (8) is arranged on the suction cup (5); the storage device (4) and the locking mechanism (6) are close to the two sides of the water-blocking breathable layer (3) respectively, and the suction cup (5) is located between the storage device (4) and the locking mechanism (6). The utility model has the advantages that the workload of medical staff can be reduced, and the wound infection risk can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of closed negative pressure drainage dressings, and in particular relates to a composite dressing with a replaceable water-absorbing inner core. Background Art

[0002] Negative pressure drainage therapy for wounds is a treatment method that uses the principle of negative pressure to remove wound exudate, bacteria and necrotic tissue, create a moist and clean environment for the wound, and thus promote wound healing. In the negative pressure therapy for wounds, the application of dressings is a very critical step. Dressings are not only a medium for the application of negative pressure, but also an important element in the wound healing process.

[0003] The disposable closed negative pressure drainage composite dressing currently used in clinical practice is composed of a multi-layer structure, which mainly relies on the absorbent core to absorb exudate. However, due to the structure, composition and the absorbent capacity of the dressing, it can only meet the exudate absorption needs of wounds with medium exudate. For wounds with a large amount of exudate, a single dressing cannot completely absorb the exudate of the wound during a single treatment, and the dressing needs to be changed multiple times. Moreover, each time the dressing is changed, the wound needs to be re-dressed, which increases the chance of external bacteria contacting the wound during the change period, which not only increases the workload of medical staff, but also increases the risk of infection of the wound. Utility Model Content

[0004] The purpose of the utility model is to provide a composite dressing with a replaceable water-absorbing inner core. The utility model has the advantages of reducing the workload of medical staff and reducing the risk of wound infection.

[0005] The technical solution of the utility model is as follows: a composite dressing with a replaceable water-absorbing inner core, which comprises, from the inside to the outside, a wound contact layer, a drainage support layer and a water-blocking and air-permeable layer, a storage device, a suction cup and a locking mechanism are arranged on the outer side of the water-blocking and air-permeable layer, a strip-shaped water-absorbing inner core is arranged in the storage device, one end of the water-absorbing inner core passes through between the water-blocking and air-permeable layer and the drainage support layer and is connected to the locking mechanism, and a suction straw is arranged on the suction cup.

[0006] In the aforementioned composite dressing with replaceable absorbent core, the storage device and the locking mechanism are respectively close to the two sides of the water-blocking and breathable layer, and the suction cup is located between the storage device and the locking mechanism.

[0007] In the aforementioned composite dressing with replaceable absorbent core, the storage device includes a cylinder with closed ends, one side of the cylinder is provided with a flat outlet facing the locking mechanism, the flat outlet is made of flexible material, and extends between the water-blocking and breathable layer and the drainage support layer.

[0008] In the aforementioned composite dressing with replaceable absorbent core, a first sealing clamp is provided on one side of the cylinder, and the flat outlet passes through the clamping space of the first sealing clamp and extends into between the water-blocking and breathable layer and the drainage support layer.

[0009] In the aforementioned composite dressing with replaceable absorbent core, the absorbent core is wound in the cylinder, and one end of the absorbent core enters between the water-blocking and breathable layer and the drainage support layer through the flat outlet.

[0010] In the aforementioned composite dressing with replaceable absorbent core, the locking mechanism includes a second sealing clamp fixed to the water-blocking and breathable layer, a flexible flat tube is provided in the clamping space of the second sealing clamp, one end of the flat tube extends between the water-blocking and breathable layer and the drainage support layer, and the absorbent core passes through the flat tube.

[0011] In the aforementioned composite dressing with replaceable absorbent core, the material of the wound contact layer is silicone gel, and water-permeable holes are provided on the wound contact layer.

[0012] In the aforementioned composite dressing with replaceable absorbent core, the drainage stent layer is made of mesh material.

[0013] In the aforementioned composite dressing with replaceable absorbent core, the material of the water-blocking and breathable layer is a polyurethane film.

[0014] Compared with the prior art, the utility model sets a storage device on the outside of the water-blocking and breathable layer, and draws out the belt-shaped water-absorbing inner core in the storage device, passes through the drainage support layer and the water-blocking and breathable layer, and is connected to the locking mechanism. The movable water-absorbing inner core is used to absorb the exudate inside the dressing. When the inside of the dressing, that is, the water-absorbing inner core between the drainage support layer and the water-blocking and breathable layer is full of exudate, the dry part of the water-absorbing inner core is pulled out to enter the dressing to continue to absorb the exudate. The dressing does not need to be replaced, which not only reduces the workload of medical staff, but also keeps the wound sealed, reducing the risk of infection of the wound. Therefore, the utility model has the advantages of reducing the workload of medical staff and reducing the risk of wound infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a structural diagram of a storage device.

[0017] Figure 3 It is a structural schematic diagram of the locking mechanism.

[0018] Figure 4 It is a structural schematic diagram of the water-blocking and breathable layer.

[0019] The markings in the attached drawings are: 1-wound contact layer, 2-drainage support layer, 3-water-blocking and breathable layer, 4-storage device, 5-suction cup, 6-locking mechanism, 7-water-absorbing inner core, 8-suction straw, 9-cylinder body, 10-flat outlet, 11-first sealing clamp, 12-second sealing clamp, 13-flat tube. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0021] Embodiment. A composite dressing with a replaceable absorbent core, such as Figure 1 As shown, from inside to outside, it includes a wound contact layer 1, a drainage support layer 2 and a water-blocking and breathable layer 3. The wound contact layer 1 is made of silicone gel, and the wound contact layer 1 is densely covered with water-permeable holes so that wound exudate can pass through. The drainage support layer 2 is made of a mesh material, which has a certain support and can maintain a channel for exudate drainage under negative pressure conditions. The water-blocking and breathable layer 3 is made of a polyurethane film, which has the function of air permeability and water blocking.

[0022] A storage device 4, a suction cup 5 and a locking mechanism 6 are provided on the outer side of the water-blocking and breathable layer 3. The storage device 4 and the locking mechanism 6 are respectively close to both sides of the water-blocking and breathable layer 3, the suction cup 5 is located between the storage device 4 and the locking mechanism 6, and a suction tube 8 is provided on the suction cup 5.

[0023] The storage device 4 includes a cylinder 9 with closed ends, and a flat outlet 10 facing the locking mechanism 6 is provided on one side of the cylinder 9. The flat outlet 10 is made of flexible plastic material (such as PE), and extends between the water-blocking and breathable layer 3 and the drainage support layer 2. A first sealing clamp 11 is provided on one side of the cylinder 9, and the flat outlet 10 extends between the water-blocking and breathable layer 3 and the drainage support layer 2 after passing through the clamping space of the first sealing clamp 11. A water-absorbing inner core 7 wound in a strip shape is provided in the cylinder 9. Preferably, easy-tear lines are provided at intervals along the length of the water-absorbing inner core 7.

[0024] The locking mechanism 6 includes a second sealing clamp 12 fixed to the water-blocking and breathable layer 3 , and a flat tube 13 made of flexible plastic material is provided in the clamping space of the second sealing clamp 12 . One end of the flat tube 13 facing the storage device 4 extends between the water-blocking and breathable layer 3 and the drainage support layer 2 .

[0025] One end of the water-absorbing inner core 7 extends out from the flat outlet 10 , passes through between the water-blocking and air-permeable layer 3 and the drainage support layer 2 , and passes through the flat tube 13 .

[0026] Working principle: connect the suction tube 8 to the negative pressure source, cover the wound with the wound contact layer 1, seal the edge of the dressing, fix the dressing on the skin, and perform negative pressure drainage treatment. When the water-absorbing inner core 7 between the water-blocking and breathable layer 3 and the drainage support layer 2 is full of exudate, stop the negative pressure source, open the first sealing clamp 11 and the second sealing clamp 12, pull out the dry water-absorbing inner core 7 in the cylinder 9, make it enter between the water-blocking and breathable layer 3 and the drainage support layer 2, close the first sealing clamp 11 and the second sealing clamp 12, tear off the wet part, restart the negative pressure source, and continue the treatment.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

Claims

1. A composite dressing with a replaceable absorbent core, characterized in that: The invention comprises, from the inside to the outside, a wound contact layer (1), a drainage support layer (2) and a water-blocking and air-permeable layer (3); a storage device (4), a suction cup (5) and a locking mechanism (6) are arranged on the outside of the water-blocking and air-permeable layer (3); a belt-shaped water-absorbing inner core (7) is arranged in the storage device (4); one end of the water-absorbing inner core (7) passes through between the water-blocking and air-permeable layer (3) and the drainage support layer (2) and is connected to the locking mechanism (6); and a suction tube (8) is arranged on the suction cup (5).

2. The composite dressing with replaceable absorbent core according to claim 1, characterized in that: The storage device (4) and the locking mechanism (6) are respectively close to the two sides of the water-blocking and air-permeable layer (3), and the suction cup (5) is located between the storage device (4) and the locking mechanism (6).

3. The composite dressing with replaceable absorbent core according to claim 1 or 2, characterized in that: The storage device (4) comprises a cylinder (9) with closed ends, one side of the cylinder (9) is provided with a flat outlet (10) facing the locking mechanism (6), the flat outlet (10) is made of a flexible material, and the flat outlet (10) extends between the water-blocking and air-permeable layer (3) and the drainage support layer (2).

4. The composite dressing with replaceable absorbent core according to claim 3, characterized in that: A first sealing clamp (11) is provided on one side of the cylinder (9), and a flat-mouth discharge port (10) passes through the clamping space of the first sealing clamp (11) and extends into between the water-blocking and air-permeable layer (3) and the drainage support layer (2).

5. The composite dressing with replaceable absorbent core according to claim 3, characterized in that: The water-absorbing inner core (7) is wound in the cylinder (9), and one end of the water-absorbing inner core (7) enters between the water-blocking and air-permeable layer (3) and the drainage support layer (2) through the flat-mouth discharge port (10).

6. The composite dressing with replaceable absorbent core according to claim 1 or 2, characterized in that: The locking mechanism (6) comprises a second sealing clamp (12) fixed to the water-blocking and air-permeable layer (3), a flexible flat tube (13) being arranged in the clamping space of the second sealing clamp (12), one end of the flat tube (13) extending between the water-blocking and air-permeable layer (3) and the drainage support layer (2), and the water-absorbing inner core (7) passing through the flat tube (13).

7. The composite dressing with replaceable absorbent core according to claim 1, characterized in that: The material of the wound surface contact layer (1) is silicone gel, and water permeable holes are provided on the wound surface contact layer (1).

8. The composite dressing with replaceable absorbent core according to claim 1, characterized in that: The drainage stent layer (2) is made of mesh material.

9. The composite dressing with replaceable absorbent core according to claim 1, characterized in that: The material of the water-blocking and air-permeable layer (3) is a polyurethane film.

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