TWI623305B - Three-dimensional wound dressing - Google Patents

Abstract

A three-dimensional wound dressing comprising a body made of foam having a planar bottom surface and an upwardly convex and curved top surface. Thereby, the three-dimensional dressing of the invention can be placed into the cavity-type wound, and the top surface of the wound can be attached to the inner wall of the wound and the bottom of the cavity, thereby effectively absorbing the wound exudate and maintaining the integrity of the body after absorbing the liquid. Sexual, easy for the user or medical staff to remove and replace.

Description

Three-dimensional wound dressing

The present invention relates to a wound dressing, and more particularly to a three-dimensional wound dressing which can effectively absorb the exudate of a cavity-type wound and is convenient for the user to replace.

Cavity-type wounds contain tissue defects caused by any cause and form deep cavities or chamber wounds. Clinically, cavity-type wounds can be roughly divided into post-operative wounds with local tissue resection, post-operative wounds that require bacterial dissection to remove sutures, severe trauma and debridement, such as three. Or a four-stage pressure sore, a diabetic ulcer wound, and a foot ulcer wound.

The ideal dressing for the treatment of cavity-type wounds needs to have the following characteristics: 1. It can be placed in the chamber and contact the bottom of the wound, 2. It can absorb a large amount of exudate, 3. After the exudate is absorbed, the integrity is maintained. Take out, 4. It is not easy to stick to the surface of the wound. The early care cavity wound is mainly composed of calcium alginate dressing. It is soft and easy to fill, and has good absorption capacity. It can contact the bottom of the cavity to absorb the wound exudate. The disadvantage is that after the wound is exuded, it will be transformed into a gel. When the replacement is performed, the medical staff cannot take out the whole body, and the dressing remaining in the wound bed needs to be removed multiple times, which not only takes time and increases the labor cost of the medical labor.

In addition, there is an Aquacel ^® dressing on the market that is quite absorbent and is widely used in cavity-type wounds in the clinic. However, it will be converted into a gel after absorbing moisture, so it is necessary to remove the residual gel several times when changing the dressing, which causes a burden on the medical manpower.

Foam is also a high-absorption material applied to wound dressings. Only the foam dressings on the market are flat sheets. Although they have high absorption capacity and maintain integrity after absorbing liquid, they are not easy to be stuffed in the cavity. The inner wall of the wound.

The object of the present invention is to provide a three-dimensional wound dressing which can be effective It absorbs the exudate of the cavity type wound and is easy for the user to replace.

The three-dimensional wound dressing of the present invention comprises a body made of foam having a planar bottom surface and an upwardly convex and curved top surface. Thereby, the three-dimensional dressing of the invention can be placed into the cavity-type wound, and the top surface of the wound can be attached to the inner wall of the wound and the bottom of the cavity, thereby effectively absorbing the wound exudate and maintaining the integrity of the body after absorbing the liquid. Sexual, easy for the user or medical staff to remove and replace.

10‧‧‧Three-dimensional wound dressing

12‧‧‧Ontology

14‧‧‧ bottom

16‧‧‧ top surface

18‧‧‧ apex

D‧‧‧distance

20‧‧‧ cavity wound

22‧‧‧ bottom

30‧‧‧Three-dimensional wound dressing

32‧‧‧Ontology

34‧‧‧ bottom

35‧‧‧ long axis

36‧‧‧ Short axis

38‧‧‧ top surface

39‧‧‧ vertex

D‧‧‧distance

1 is a top view of a first preferred embodiment of the present invention; FIG. 2 is a side view of a first preferred embodiment of the present invention; and FIG. 3 is a schematic view showing a first preferred embodiment of the present invention; 4 is a top view of a second preferred embodiment of the present invention; FIG. 5 is a front view of a second preferred embodiment of the present invention; and FIG. 6 is a right side view of a second preferred embodiment of the present invention.

1 to 2, a three-dimensional wound dressing 10 according to a first preferred embodiment of the present invention, the three-dimensional wound dressing 10 having a body 12 made of foam, in the present embodiment, the foam system It is made of polyurethane (PU) and can be foamed and molded by using materials such as polyethylene (PE), polyvinyl alcohol (PVA) or ethylene/vinyl acetate copolymer (EVA).

The body 12 has a planar bottom surface 14 and an upwardly convex and curved top surface 16 integrally forming a half-flat sphere. The bottom surface 14 is circular and the bottom surface 14 has a diameter of about 10 cm. The top surface 16 is 16 There is a vertex 18, the distance d between the vertex 18 and the bottom surface 14 is greater than the distance between the other positions of the top surface 16 and the bottom surface 14, and the distance from the vertex 18 to the bottom surface 14 is 2 cm.

The invention utilizes the characteristics of high water absorbency of the foam to be molded into a semi-spheroidal sphere, and the top surface 16 is placed into the cavity-shaped wound 20 when used, and the dressing 10 is brought into contact with the wound 20 as shown in FIG. The bottom portion 22 and the inner edge are subjected to liquid absorption. In this embodiment, the PU foam has a water absorption capacity of 2.9 to 3.2 ml/cm ³ , and the integrity of the body is maintained after the liquid is absorbed, and the dressing 10 can be easily taken out during the replacement, without requiring multiple cleaning treatments, compared with the conventional ones. Wound dressing can absorb wound exudate more effectively and save medical labor cost. It is especially suitable for cavity wound care with large area, such as pressure sore, diabetic ulcer wound and severe trauma and debridement. Cave-shaped wounds.

In accordance with the spirit of the present invention, the size of the three-dimensional wound dressing 10 can be varied to match different sizes of wounds. For example, the bottom surface 14 can have a diameter of 2 to 30 cm, and the distance from the apex 18 to the bottom surface 14 is 1 to 10 cm. Yes.

In addition, the shape of the three-dimensional wound dressing 10 can also be changed. As shown in Figures 4 to 6, the three-dimensional wound dressing 30 of the second preferred embodiment of the present invention has a body 32 formed in a semi-elliptical shape and a bottom surface. The 34 series has an elliptical shape having a major axis 35 and a minor axis 36. The ratio of the length of the major axis 35 to the length of the minor axis 36 is 5:3, the length of the major axis 35 is 5 cm, and the length of the minor axis 36 is 3cm, the top surface 38 has a vertex 39, and the distance d from the apex 39 to the bottom surface 34 is 1.5 cm. The dressing 30 of this embodiment is suitable for use in narrower cavity wounds, such as post-operative cavity wounds for local tissue resection or post-operative wounds with suture removal.

The size of the three-dimensional wound dressing 30 can be varied to match different sizes of wounds, for example, the ratio of the length of the long axis to the length of the short axis can be 5:4 to 5:1, and the length of the long axis can be 2 to 30 cm. The distance from the apex to the bottom surface can be 1~10cm.

In particular, if the shape of the wound is irregular, the dressing of the present invention can be trimmed and placed into the wound by the elastic pressing of the body of the foam, which is more suitable than the conventional flat dressing. Elastic, can be more suitable for the inner wall of the wound, in order to achieve a better absorption of liquid, and because the bottom surface of the dressing is flat, after the dressing is placed in the wound, the bottom of the dressing will be flush with the surrounding skin surface, convenient The dressing or the tape is fixed, and the foreign object can be accidentally caught, so the dressing of the invention has a simple shape, but is an excellent design with practical convenience.

Claims (6)

A three-dimensional wound dressing consists of a body made of foam having a flat bottom surface and an upwardly convex and curved top surface. A three-dimensional wound dressing according to claim 1, wherein the bottom surface is circular. The three-dimensional wound dressing according to claim 2, wherein the bottom surface has a diameter of 2 to 30 cm, the top mask has a vertex, and the distance between the vertex and the bottom surface is greater than the distance between the other positions of the top surface and the bottom surface, and the distance from the vertex to the bottom surface is 1~10cm. A three-dimensional wound dressing according to claim 1, wherein the bottom surface is elliptical. The three-dimensional wound dressing according to claim 4, wherein the bottom surface has a long axis and a short axis, and the ratio of the length of the major axis to the length of the minor axis is 5:4 to 5:1, and the length of the major axis is 2 to 30 cm. The mask has a vertex, and the distance between the vertex and the bottom surface is greater than the distance between the other positions of the top surface and the bottom surface, and the distance from the vertex to the bottom surface is 1 to 10 cm. A three-dimensional wound dressing according to claim 1, wherein the system is foamed from polyurethane (PU), polyethylene (PE), polyvinyl alcohol (PVA) or ethylene/vinyl acetate copolymer (EVA).