CN221654815U - A hemostatic dressing - Google Patents

Abstract

The utility model provides a hemostatic dressing, which solves the technical problems that the existing dressing only treats wounds through self materials, lacks compression on the wounds and has poor hemostatic effect, and can be widely applied to the field of medical hemostasis; the adhesive comprises a base material layer, wherein a medicine area is arranged in the middle of the inner surface of the base material layer, the medicine area consists of an upper water adhesive layer and a lower chitosan layer, pressure sensitive adhesive bodies are arranged around the medicine area, a limiting frame is fixedly arranged in the middle of the outer surface of the base material layer, and a plastic elastic sheet is fixedly arranged in the limiting frame; a protective layer is attached to the inner surface of the base material layer, and the surface area of the protective layer is larger than that of the base material layer; an extension part is further arranged on one side of the base material layer, and no adhesive is arranged between the extension part and the protective layer; the periphery of the water gel layer is provided with an anti-overflow ring, and a plurality of air holes are formed in the water gel layer.

Description

A hemostatic dressing

Technical Field

The utility model belongs to the technical field of medical hemostasis, in particular to a hemostatic dressing.

Background Art

Medical dressings are an important type of medical supplies. Medical dressings are often applied to patients' wounds during surgery, dressing changes and other treatments to stop bleeding and protect wounds, thereby allowing the wounds to heal quickly. Specifically, medical dressings cover the wound surface of injured skin, so that before the skin is reconstructed or restored, the medical dressing provides a favorable microenvironment for wound healing. On the one hand, the wound is isolated from the outside world and used to protect the wound. On the other hand, the dressing has the ability to absorb liquid exuding from the wound surface to prevent various problems caused by the exuded liquid.

A Chinese utility model patent with publication number CN219375187U discloses a silicone gel scar dressing, which solves the problems of short duration of drug efficacy of existing scar dressings and easy contamination and irritation to the wound surface. The dressing comprises a dressing body, which is composed of a breathable bearing base layer, an expandable extrusion layer, a silicone gel coating layer, silicone gel, a solid mesh layer and a release layer. The breathable bearing base layer is composed of a closed anti-penetration middle layer and a peripheral breathable connecting layer. A plurality of breathable micropores are provided on the peripheral breathable connecting layer. The expandable extrusion layer is composed of an annular liquid absorption layer, a liquid conduction base layer and an expandable inner layer.

However, when the utility model is used, the wound is treated only by the dressing material itself, and there is a lack of compression on the wound, resulting in poor hemostasis effect.

Utility Model Content

The purpose of the utility model is to solve the deficiencies of the above-mentioned technology and provide a hemostatic dressing.

To this end, the utility model provides a hemostatic dressing, including a base material layer, a medicine area is arranged in the middle of the inner surface of the base material layer, the medicine area is composed of an upper hydrogel layer and a lower chitosan layer, a pressure-sensitive colloid is arranged around the medicine area, a limiting frame is fixedly arranged in the middle of the outer surface of the base material layer, and a plastic spring is fixedly arranged in the limiting frame.

Wherein, the limiting frames are two symmetrically arranged rigid frames, and the two ends of the plastic spring are respectively fixedly connected to the two limiting frames.

Furthermore, a protective layer is attached to the inner surface of the base material layer, and the surface area of the protective layer is larger than the surface area of the base material layer.

Furthermore, an extension portion is provided on one side of the base material layer, and no adhesive is provided between the extension portion and the protective layer.

Furthermore, a plurality of air holes are provided in the hydrogel layer.

Furthermore, an anti-overflow ring is arranged on the periphery of the hydrogel layer.

The utility model provides a hemostatic dressing, which has the following beneficial effects:

⑴ The chitosan layer accelerates blood coagulation and the hydrogel layer absorbs tissue fluid at the wound, thereby playing a role in hemostasis;

(2) By providing the extension part, it is convenient to tear the protective layer off from the base material layer when using;

⑶ By setting the ventilation holes, the air permeability of the hemostatic dressing itself can be increased, reducing the stuffiness during use;

(4) By setting up an anti-overflow ring, the blood and tissue fluid absorbed by the hydrogel layer can be isolated inside the hydrogel layer, preventing the blood or tissue fluid from flowing out from the edge of the hemostatic dressing.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a front view of the utility model;

FIG2 is a top view of the first embodiment of the present utility model;

FIG3 is a top view of the second embodiment of the present utility model;

FIG4 is a top view of the third embodiment of the present utility model;

FIG5 is a bottom view of the base material layer of the present invention;

Markings in the figure: 1. protective layer, 2. base material layer, 3. hydrogel layer, 4. chitosan layer, 5. air vent, 6. limit frame, 7. plastic spring, 8. extension part, 9. anti-overflow ring.

DETAILED DESCRIPTION

The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

As shown in Figures 1 to 3, the utility model provides a hemostatic dressing, including a base material layer 2. In some embodiments, the base material layer 2 can be made of materials such as polyurethane film or non-woven fabric. A drug area is arranged in the middle of the inner surface of the base material layer 2, and the drug area is composed of an upper hydrogel layer 3 and a lower chitosan layer 4. A pressure-sensitive colloid is arranged around the drug area. A limit frame 6 is fixedly arranged in the middle of the outer surface of the base material layer 2, and a plastic spring 7 is fixedly arranged in the limit frame 6. In some embodiments, the plastic spring 7 can be made of polyolefin materials such as PC, PP, and PET.

Embodiment 1: The limiting frames 6 are two symmetrically arranged rigid frames, and the two ends of the plastic spring piece 7 are respectively fixedly connected to the two limiting frames 6 .

Embodiment 2: The limiting frame 6 is a rectangular rigid frame, and the two ends of the plastic spring 7 are respectively fixedly connected to the opposite side frames of the limiting frame 6. Compared with embodiment 1, the two sides of the rectangular frame not connected to the plastic spring 7 in this embodiment can limit the two sides connected to the plastic spring 7, preventing the limiting frame 6 connected to the plastic spring 7 from expanding to both sides due to the elastic force of the plastic spring 7 after long-term use, resulting in a decrease in the elastic force of the plastic spring 7 itself and a weakening of the compression effect on the wound.

Embodiment 3: The limiting frame 6 is a circular rigid frame, the plastic spring piece 7 is a raised circular shape, and the plastic spring piece 7 is adaptively fixed in the limiting frame 6. Compared with the embodiment 2, the circular frame is more evenly stressed than the rectangular frame and has better stability.

A protective layer 1 is attached to the inner surface of the base material layer 2 . The surface area of the protective layer 1 is larger than that of the base material layer 2 , and the base material layer 2 can be completely wrapped to prevent pathogens from contaminating the inner surface of the base material layer 2 .

When in use, the protective layer 1 is torn off from the base material layer 2, the medicine area is aligned with the wound position, the hemostatic dressing is attached to the skin surface, the convex plastic spring piece 7 is pressed downward to make the plastic spring piece 7 concave, and the concave plastic spring piece 7 squeezes the medicine area so that the medicine area fits tightly to the wound position, and the chitosan layer 4 accelerates blood coagulation and the hydrogel layer 3 absorbs the tissue fluid at the wound, thereby playing a hemostatic role.

An extension portion 8 is also provided on one side of the base material layer 2 , and no adhesive is provided between the extension portion 8 and the protective layer 1 , so that the protective layer 1 can be torn off from the base material layer 2 conveniently when in use.

A plurality of air holes 5 are provided in the hydrogel layer 3, and the base material layer 2 is preferably made of non-woven fabric, which can increase the air permeability of the hemostatic dressing itself and reduce the stuffiness during use.

An anti-overflow ring 9 is arranged around the hydrogel layer 3. The anti-overflow ring 9 is made of waterproof material, such as polyethylene, and can isolate the blood and tissue fluid absorbed by the hydrogel layer 3 inside the hydrogel layer 3 to prevent the blood or tissue fluid from flowing out from the edge of the hemostatic dressing.

In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", 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, and do not indicate or imply 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.

However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims (8)

1. A hemostatic dressing, comprising a base material layer, a medicine area is arranged in the middle of the inner surface of the base material layer, the medicine area is composed of an upper hydrogel layer and a lower chitosan layer, and a pressure-sensitive colloid is arranged around the medicine area. It is characterized in that a limit frame is fixedly arranged in the middle of the outer surface of the base material layer, and a plastic spring is fixedly arranged in the limit frame. 2. A hemostatic dressing according to claim 1, characterized in that the limiting frame is two symmetrically arranged rigid frames, and two ends of the plastic spring are respectively fixedly connected to the two limiting frames. 3. A hemostatic dressing according to claim 1, characterized in that the limiting frame is a rectangular rigid frame, and two ends of the plastic spring are respectively fixedly connected to the opposite side frames of the limiting frame. 4. A hemostatic dressing according to claim 1, characterized in that the limiting frame is a circular rigid frame, the plastic spring piece is a raised circular shape, and the plastic spring piece is adaptively fixed in the limiting frame. 5. A hemostatic dressing according to any one of claims 1 to 4, characterized in that a protective layer is attached to the inner surface of the base material layer, and the surface area of the protective layer is larger than the surface area of the base material layer. 6. A hemostatic dressing according to claim 5, characterized in that an extension portion is further provided on one side of the base material layer, and no adhesive is provided between the extension portion and the protective layer. 7. A hemostatic dressing according to claim 6, characterized in that a plurality of air holes are provided in the hydrogel layer. 8. A hemostatic dressing according to claim 7, characterized in that an anti-overflow ring is provided on the periphery of the hydrogel layer.