Patent Description:
'Wound' on the skin of the body refers to a state where the normal structure of body tissue is damaged by an externally applied force. Thus, it is known that wound healing is promoted only when the wound is in light damp or occluded conditions. In the case where excessive exudate remains in the wound area, a lower portion of a member for dressing a wound is swollen by the exudate, which makes the wound area invisible. In addition, when the wound dressing member absorbs the exudate completely to remove the exudate, there occurs a problem in that the wound area becomes dry, and thus the progress of the wound healing is retarded.

Thus, in an attempt to solve the above-mentioned problems, various technologies such as employing a member coated with hydrogel to maintain the wound area in a wet state or employing a member capable of properly absorbing exudate are developed and their related patent applications are filed in Korea and foreign countries.

<CIT>) is directed to a bandage for wound dressing. As shown in <FIG>, the bandage include a structure in which an atelo-collagen sponge (not shown) is attached to a portion of a hydrogel <NUM> and a transparent pressure-sensitive adhesive film <NUM> for fixing the hydrogel <NUM> to a wound area and. <CIT>) is directed to a wound dressing material using carboxymethylcellulose fiber. As shown in <FIG>, the wound dressing material includes: a wound contact layer <NUM> having a liquid permeable sheet for allowing exudate generated from a wound to permeate therethrough; an absorbent layer <NUM> containing carboxymethylcellulose fiber; and a support layer <NUM> including a synthetic polymer film on one surface of which a pressure-sensitive adhesive is coated to allow the wound contact layer <NUM> to come into close contact with the skin therethrough. <CIT>) is directed to a wound dressing on which an ointment type dressing agent is applied. As shown in <FIG>, the wound dressing includes a structure in which a pressure-sensitive adhesive layer <NUM> is adhered to a base <NUM> to allow the wound dressing to be attached to the skin around a wound area therethrough, and a dressing substrate <NUM> is adhered to the pressure-sensitive adhesive layer <NUM>. As mentioned above, various wound dressing members are known in the art.

However, the above-mentioned conventional wound dressing members have similarities in that it employs a drug capable of treating a wound while maintaining a wound area in a wet state, but entail problems in that when a medical staff desires to observe the wound area of a patient with naked eyes, he or she suffers from inconvenience of having to completely remove the wound dressing members from the wound area. In addition, the conventional wound dressing members involve problems in that pain may be caused to the wound area of the patient during removal of the wound dressing members from the wound area, and in that when it is desired to reuse the wound dressing members, the affected part of the patient may be contaminated from external bacteria.

In the meantime, the present applicant has developed a member for preventing bedsores, which has a structure as shown in <FIG>, and has been granted a patent for the member for preventing bedsores as disclosed in <CIT>). In addition, the present applicant has improved the member for prevent bedsores of <CIT>), and then has developed a member for dressing a wound that can solve problems occurring in the bandage for wound dressing as disclosed in the above-mentioned <CIT>), the wound dressing material using carboxymethylcellulose fiber as disclosed in the above-mentioned <CIT>), and the wound dressing material on which an ointment type dressing agent is applied as disclosed in the above-mentioned <CIT>), thereby completing the present invention.

<CIT> discloses a pressure ulcer prevention member having a structure such that an opening is formed at the center portion of a laminate, comprising a pad layer made of synthetic resin foam so as to contact skin and a cover layer made of synthetic resin film and laminated on the outer surface thereof, the opening being able to be exposed/covered by a cover.

<CIT> discloses an island wound dressing comprising a fenestrated base layer, an absorbent pad positioned in the base layer fenestration, and a liquid and microorganism impermeable, gas and moisture vapor permeable cover sheet.

Accordingly, the present invention has been made in order to solve the above-described problems occurring in the prior art, and it is an object of the present invention is to provide a modified member for dressing a wound in which it includes a lid cover disposed on an upper outer surface thereof and having an area larger than that of a lid, and a nonwoven fabric of a release material layer of the lid cover is adhered to a protective layer of a synthetic resin film material, which is an upper layer of the main body, by means of a pressure-sensitive adhesive layer, so that attachment and detachment between the protective layer and the release material layer is facilitated by the synthetic resin film and the nonwoven fabric that are heterogeneous materials to allow the lid to be easily opened or closed relative to the opening.

Another object of the present invention is to provide a modified member for dressing a wound in which a silicone pressure-sensitive adhesive layer is formed on the remaining underside surface of the main body other than the opening corresponding to a position of the wound area, so that when a wound occurs on the skin, the modified member can be easily attached to the wound area, and when the modified member is detached from the wound area, a pain occurring during removal of the modified member from the affected part can be alleviated and adhesive plaster allergy can be avoided with the aid of a smooth silicone pressure-sensitive adhesive.

Still another object of the present invention is to provide a modified member for dressing a wound in which when the pad layer of the lid is contaminated due to exudate or hemorrhage generated from the skin or wounds, the lid can be easily replaced with a new one, in which the lid can be easily opened or closed relative to the opening anytime to enable to check a wound healing state of the patient with naked eyes, and in which a treatment ointment for external application, therapeutic agent or drug or the like can be easily administered to the wound area so that the wound healing is promoted to reduce the sickbed life period of the patient, leading to a reduction in the medical expenditure.

Yet another object of the present invention is to provide a modified member for dressing a wound in which a pad layer of a synthetic resin film formed in a sheet type from synthetic resin foam and hydrocolloid or hydrogel is used in an aseptic state or is used by impregnating the synthetic resin foam with hydrocolloid or hydrogel, so that a wound area is prevented from being dried and is maintained in a wet state, thereby promoting wound healing.

The modified member for dressing a wound according to the present invention has effects in that it includes a lid cover disposed on an upper outer surface thereof and having an area larger than that of a lid, and a nonwoven fabric of a release material layer of the lid cover is adhered to a protective layer of a synthetic resin film material, which is an upper layer of the main body, by means of a pressure-sensitive adhesive layer, so that attachment and detachment between the protective layer and the release material layer is facilitated by the synthetic resin film and the nonwoven fabric that are heterogeneous materials to allow the lid to be easily opened or closed relative to the opening.

In addition, the modified member for dressing a wound according to the present invention has effects in that a silicone pressure-sensitive adhesive layer is formed on the remaining underside surface of the main body other than the opening corresponding to a position of the wound area, so that when a wound occurs on the skin, the modified member can be easily attached to the wound area, and when the modified member is detached from the wound area, a pain occurring during removal of the modified member from the affected part can be alleviated and adhesive plaster allergy can be avoided with the aid of a smooth silicone pressure-sensitive adhesive.

Further, the modified member for dressing a wound according to the present invention has effects in that when the pad layer <NUM> of the lid <NUM> is contaminated due to exudate or hemorrhage generated from the skin or wounds, the lid can be easily replaced with a new one, in that the lid can be easily opened or closed relative to the opening anytime to enable to check a wound healing state of the patient with naked eyes, and in that a treatment ointment for external application, therapeutic agent or drug or the like can be easily administered to the wound area so that the wound healing is promoted to reduce the sickbed life period of the patient, leading to a reduction in the medical expenditure.

Besides, the modified member for dressing a wound according to the present invention has effects in that a pad layer of a synthetic resin film formed in a sheet type from synthetic resin foam and hydrocolloid or hydrogel is used in an aseptic state or is used by impregnating the synthetic resin foam with hydrocolloid or hydrogel, so that a wound area is prevented from being dried and is maintained in a wet state, thereby promoting wound healing.

Furthermore, the modified member for dressing a wound according to the present invention has effects in that a secondary dressing procedure is unnecessary so that the patient's satisfaction with the use of the modified member and the convenience of medical staff can be increased, unlike a conventional wound dressing member in which the secondary dressing procedure is necessary to fix the wound dressing member to an affected part of a patient during the use of the wound dressing member.

Hereinafter, a preferred embodiment of the present invention will be described in further detail with reference to the accompanying drawings. In <FIG>, elements performing the same function are denoted by identical reference numerals. In the meantime, in the detailed description and the accompanying drawings, illustration and explanation on the detailed technical construction and operation of elements, which have no direct connection with the technical features of the present invention, will be omitted, and only the technical constructions directly related with the present invention will be briefly illustrated and explained.

For reference, in terms used herein, when describing each layer of a stacked body of the modified member <NUM>, the term `inner surface' refers to a face of the side of the modified member, which comes into direct contact with a patient's skin, and the term `outer surface' refers to a face opposed to the `inner surface'.

Referring to <FIG>, a modified member <NUM> for dressing a wound according to the present invention includes: a main body <NUM> having an opening <NUM> formed at a central portion thereof so as to be openable/closable; a lid cover <NUM> stackedly disposed on a top surface of the main body <NUM>; a release paper <NUM> stackedly disposed on an underside surface of the main body <NUM>; and a lid <NUM> disposed at the opening <NUM> and formed in a shape of corresponding to the shape of the opening <NUM> to enable the lid <NUM> to open or close the opening <NUM> by press-fit engagement, whereby the main body <NUM>, the lid cover <NUM>, the release paper <NUM>, and the lid <NUM> form a stacked body.

Hereinafter, a stacked structure of the respective layers of the modified member <NUM> for dressing a wound according to the present invention will be described in detail.

The main body <NUM> is a member having a face that comes into direct contact with a patient's skin, and has a structure in which it has the opening <NUM> formed at the central portion thereof so that the opening <NUM> can be opened or closed by the lid <NUM>. The main body <NUM> includes a stacked body structure composed of a protective layer <NUM> and a pad layer <NUM> as shown in <FIG>, or a stacked body structure composed of a protective layer <NUM>, a pad layer <NUM>, and a silicone pressure-sensitive adhesive layer <NUM> as shown in <FIG>.

The protective layer <NUM> is a layer formed on an upper portion of the main body <NUM>. A material used for the protective layer <NUM> may be selected from among various synthetic resin materials such as polyurethane (PU), polyethylene (PE), and polypropylene (PP), but in addition to the limited examples of the material, any material may be used without limitation as long as it is a material that has the physical properties equivalent to those of the above-enumerated materials and is harmless to the human body.

The pad layer <NUM> is a layer formed on a lower portion of the main body <NUM>. Preferably, a material used for the pad layer <NUM> is selected from among various synthetic resin materials or film materials such as polyurethane (PU), polyethylene (PE), and polypropylene (PP). In addition, the pad layer <NUM> that can be used in the present invention may be obtained by impregnating synthetic resin foam with hydrocolloid or hydrogel, or may be obtained in the form of a synthetic resin film formed in a sheet type from synthetic resin foam and hydrocolloid or hydrogel.

Hydrocolloid (hydrophilic colloid) that can be used in the present invention may be one or more selected from among collagen, hydroxyethylcellulose, mthylcellulose, ethylcellulose, and carboxymethylcelluse sodium. In addition to the limited examples of the hydrocolloid, any material may be used without limitation as long as it is a material that has the physical properties equivalent to those of the above-enumerated materials.

As such, hydrocolloid or hydrogel that is used in the present invention acts to prevent a wound area from being dried and maintain the wound area in a wet state, and thus has an effect of promoting wound healing. The pad layer of a synthetic resin film formed in the sheet type is used in an aseptic state or acts to impart a wound healing effect by impregnating the synthetic resin foam with hydrocolloid or hydrogel.

The silicone pressure-sensitive adhesive layer <NUM> is formed on the remaining underside surface of the main body <NUM> other than the opening <NUM> corresponding to a position of the wound area, so that when a wound occurs on the skin, the modified wound dressing member can be easily attached to the wound area, and when the modified wound dressing member is detached from the wound area, adhesive plaster allergy can be avoided and a pain occurring during removal of the modified member from the affected part can be alleviated with the aid of a smooth silicone pressure-sensitive adhesive.

The opening <NUM> formed at the central portion of the main body <NUM> has a structure in which it can be opened or closed by press-fit engagement of the lid <NUM> having a shape corresponding to the shape of the opening. The lid <NUM> includes a stacked body composed of a protective layer <NUM> and a pad layer <NUM> as shown in <FIG> and <FIG>.

A material used for the protective layer <NUM> and the pad layer <NUM> of the lid <NUM> is the same as that used for the protective layer <NUM> and the pad layer <NUM> of the main body <NUM>.

The lid cover <NUM> includes a structure in which a cover layer <NUM>, a release material layer <NUM>, and a pressure-sensitive adhesive layer <NUM> are stacked downwards in order. The lid cover <NUM> has an area lager than that of the lid <NUM>. The lid cover <NUM> may include a knob (not shown) formed at a proper portion of one side or both sides thereof to facilitate the opening/closing of the lid <NUM> relative to the opening <NUM>.

The cover layer <NUM> is a layer that serves to protect the lid cover <NUM>. A material used for the cover layer <NUM> is the same as that used for the protective layer <NUM> of the main body <NUM>.

The release material layer <NUM> has a structure in which it integrally bonded to an underside surface of the cover layer <NUM>, and a material used for the release material layer <NUM> is preferably selected from among a nonwoven fabric, a natural fiber fabric, and a synthetic fiber fabric. In addition to the enumerated release materials, any material may be used without limitation as long as it is a material that has the release properties that it can be easily separated from the synthetic resin film adhered thereto and is harmless to the human body.

The pressure-sensitive adhesive layer <NUM> is a layer that has a pressure-sensitive adhesive coated on an underside surface of the release material layer <NUM>. The pressure-sensitive adhesive layer <NUM> is a layer formed to adhere the nonwoven fabric, the natural fiber fabric or the synthetic fiber fabric of the release material layer <NUM> to the protective layer <NUM> of a synthetic resin film material of the main body <NUM>. The pressure-sensitive adhesive used in the present invention is preferably a polyurethane-based pressure-sensitive adhesive that is harmless to the human body, but is necessarily not limited thereto. Any pressure-sensitive adhesive may be used without limitation as long as it is a material that has the physical properties equivalent to those of the pressure-sensitive adhesive.

Thus, the modified member <NUM> for dressing a wound according to the present invention includes the lid cover <NUM> formed on the upper outer surface thereof and having an area larger than that of the lid <NUM>, and the nonwoven fabric of the release material layer <NUM> of the lid cover <NUM> is adhered to the protective layer <NUM> of a synthetic resin film material, which is an upper layer of the main body <NUM>, by means of the pressure-sensitive adhesive layer <NUM>, so that attachment and detachment between the protective layer <NUM> and the release material layer <NUM> is facilitated by the synthetic resin film and the nonwoven fabric that are heterogeneous materials as shown <FIG>. Thus, the modified wound dressing member <NUM> of the present invention has an effect in that the lid <NUM> is easily opened or closed relative to the opening <NUM> as shown in <FIG>.

The release paper <NUM> is a layer for protecting the modified member for dressing a wound. In other words, the release paper <NUM> is a layer that is adhered to and laminated on an underside surface of the main body <NUM> by means of a pressure-sensitive adhesive harmless to the human body, coated on a surface abutting against the modified wound dressing member. As the release paper <NUM>, a synthetic resin film, a synthetic resin coated paper, a silicone coated paper, a natural fabric, or a synthetic resin fabric which is in an aseptic state may be used.

Further, the release paper <NUM> may have a pressure-sensitive adhesive coated thereon, if necessary. The pressure-sensitive adhesive used to be coated on the release paper <NUM> is the same as that used in the pressure-sensitive adhesive layer <NUM> of the lid cover <NUM>.

As described above, according to the modified member <NUM> for dressing a wound of the present invention, when the pad layer <NUM> of the lid <NUM> is contaminated due to either exudate or hemorrhage generated from the skin or wounds, the lid <NUM> adhered to the pressure-sensitive adhesive layer <NUM> of the lid cover <NUM> is separated from the lid cover <NUM> and then the lid <NUM> can be easily replaced with a new aseptic lid <NUM>. In addition, the lid <NUM> can be easily opened or closed relative to the opening <NUM> anytime to enable to check a wound healing state of the patient with naked eyes. Further, a treatment ointment for external application, therapeutic agent or drug or the like can be easily administered to the wound area so that the wound healing is promoted to reduce the sickbed life period of the patient, leading to a reduction in the medical expenditure.

Thus, the modified member for dressing a wound according to the present invention makes it unnecessary to perform a secondary dressing procedure is unnecessary so that the patient's satisfaction with the use of the modified member and the convenience of medical staff can be increased, unlike a conventional wound dressing member in which the secondary dressing procedure is necessary to fix the wound dressing member to an affected part of a patient during the use of the wound dressing member.

In a best mode for carrying out the present invention, the present invention provides a modified member for dressing a wound, which includes: a main body <NUM> having an opening <NUM> formed at a central portion thereof so as to be openable/closable; a lid cover <NUM> stackedly disposed on a top surface of the main body <NUM>; a release paper <NUM> stackedly disposed on an underside surface of the main body <NUM>; and a lid <NUM> disposed at the opening <NUM> and formed in a shape of corresponding to the shape of the opening <NUM> to enable the lid <NUM> to open or close the opening <NUM> by press-fit engagement, whereby the main body <NUM>, the lid cover <NUM>, the release paper <NUM>, and the lid <NUM> form a stacked body.

Claim 1:
A modified member for dressing a wound, characterized in that it comprises:
a main body (<NUM>) comprising a protective layer (<NUM>) of a synthetic resin film material and a pad layer (<NUM>) of a synthetic resin film material and having an opening (<NUM>) formed at a central portion thereof so as to be openable/closable;
a lid cover (<NUM>) stackedly disposed on a top surface of the main body (<NUM>), and comprising a structure in which a cover layer (<NUM>) of a synthetic resin film material, a release material layer (<NUM>) selected from among a nonwoven fabric, a natural fiber fabric, and a synthetic fiber fabric, and a pressure-sensitive adhesive layer (<NUM>) are stacked downwards in order, and in which the release material layer (<NUM>) is adhered to the protective layer (<NUM>) that is an upper layer of the main body (<NUM>) by means of the pressure-sensitive adhesive layer (<NUM>), wherein the lid cover (<NUM>) has an area lager than that of the lid (<NUM>);
a release paper (<NUM>) stackedly disposed on an underside surface of the main body (<NUM>); and
a lid (<NUM>) disposed at the opening (<NUM>) and comprising a protective layer (<NUM>) and a pad layer (<NUM>), which is made of a synthetic resin film material, the lid (<NUM>) being formed in a shape of corresponding to the shape of the opening (<NUM>) to enable the lid (<NUM>) to open or close the opening (<NUM>) by press-fit engagement,
whereby the main body (<NUM>), the lid cover (<NUM>), the release paper (<NUM>), and the lid (<NUM>) form a stacked body.