JPH04501219A - adhesive dressing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] adhesive dressing The present invention can be used to cover wounds, cuts, infections, skin disease areas, etc. to prevent contaminant particles, bacteria, and other on the skin or nails to prevent or reduce access to unwanted microorganisms. Adhesive dressings that can be applied Regarding. Accordingly, the present invention includes surgical dressings and wound dressings.

Adhesive adhesive plasters, bandages (bandagels and other BACKGROUND OF THE INVENTION BACKGROUND OF THE INVENTION BACKGROUND OF THE INVENTION Assistive devices are well known in the art. Among the known aids, the British patent No. 1280631 (GB-A-1280631)4. : as disclosed There is a semi-transparent film. Such films can be thin and very flexible. This prevents the person applying the dressing from applying the dressing evenly to the skin or nails, and from using the dressing more than necessary. Without contact, it becomes difficult to adhere.

In an attempt to solve this problem, various semi-transparent film dressings have become available. However, in addition to the film, this treatment tool also contains a material that facilitates the application of the film. The sea urchin has one or more separate layers.

Smith & Nep 21 (S+with & Nep) is a known two-layer dressing. There is Hewl's Obsight fops ITEl product, which is a semi-permeable adhesive. The adhesive film to be applied to the wound is protected by protective paper. and the entire dressing can be peeled off from the protective paper before being applied to the wound. There are removable “handles” at each end of the adhesive film. e''), which handle is then removed.

Another similar known adhesive dressing is under the trademark BIOCLUSI. Johnson & Johnson with VEI Sold by hnsonl.

It is unique in that it consists of two layers: a transparent adhesive film and a layer of protective paper. It looks disparagingly similar to Ovosite products. Adhesive film has "handles" on both ends There is.

Another similar type of dressing is 3M's Tegaderm (TEGA). DERM) product, which has a transparent protective film that can be peeled off. It consists of three layers including a layer of protective paper. The transparent dressing film is placed on one side. Only the adhesive is on this side, and this side faces the protective paper.

Protected by protective paper. The adhesive layer can be made from paper in the same way as the protective paper. The 6 backing layers sandwiched between the two backing layers can be removed by removing the center part of the backing layer. Prepare the remaining backing layer and transparent treatment film so that the combination forms a window. The remainder is cut into pieces and thus attached to a transparent dressing film. The shape of the backing layer defines a paper frame. Transparent treatment film and paper The frame is then placed over the wound and the paper frame is removed.

As used herein, the term "wound" refers to burns, cuts, sores, - Treat areas of skin with sores, blisters, rashes, or other diseases or problems. include.

These known dressings have several drawbacks.

In the case of a dressing consisting of two layers, namely an adhesive film and a protective paper, the protective paper is Since it is peeled off from the adhesive film, the adhesive film can adhere to the skin. It becomes like this. When the film is held by the handle, one side of the adhesive film The other edge is placed against the skin and the protective paper is peeled off from the adhesive film. to this This exposes some of the adhesive surface of the film to be adhered to the skin. However However, this method of covering the wound with adhesive film reduces the tension on the adhesive film. The adhesive film must be stretched or folded to a minimum. However, in reality, such an ideal Obtaining the status is difficult.

Depending on the nature of the scratch and the adhesion of the thin adhesive film, In addition, the area of the adhesive film should be relatively large (to ensure sufficient coverage of the wound). Because the adhesive film is often stretched, some parts of the adhesive film may The area that eventually covers the wound becomes particularly weak, and the creases touch. When formed on the adhesive film, bacteria and contaminant particles can invade the wound under the adhesive film. A path allowing entry is immediately formed.

The adhesive film is extremely thin and very adhesive in nature, so it should be smoothed and It is extremely difficult to eliminate creases, and in this way the adhesive film This may result in stretching the program. (Regardless of whether a crease is formed or not. The wound and surrounding area are already inflamed, causing pain to the patient. Therefore, the degree of smoothing of the adhesive film should be minimized.

Another problem with the known types of dressings mentioned above is that If it is not possible to avoid touching the wound or the area of skin surrounding the wound, The method of applying the dressing is often extremely difficult, if not possible. However, contact of the dressing with the skin to be applied should minimize contamination. from a hygienic point of view, and to reduce the amount of pain experienced by patients during wound care. This is clearly undesirable from both points of view.

The type of dressing described above can also be applied by applying one edge first and then applying the protective paper one after the other. The newly exposed adhesive film must be peeled off and applied to the wound. Alternatively, apply the center part of the adhesive film to the wound, and then apply it from the center to the sides. Apply the adhesive film, keeping it away from the wound. However, the latter In this case, at some stage the adhesive film can be applied without touching the adhesive itself. It is virtually difficult to do so. This removes some of the adhesive (adhesive fillet). (the adhesive film may not adhere well to the skin) or may not adhere properly when applying the adhesive film. The film may be contaminated by fingertip material. It's obvious However, even if you wash your hands so that they are virtually clean, your hands may not be completely sterile. Of course. Sterilized gloves can be used, but they are time consuming and , material costs will increase. For this reason, moreover, the skin around the wound The skin to which the adhesive film is applied is Virtually eliminates all risk of contact between the skin and the hands being applied, or eliminates the need for contact. Adhesive film dressing that can be applied to the wound is eagerly awaited.

According to a first aspect of the invention, therefore, one side is substantially coated with a pressure sensitive adhesive. , a first film layer with the other side substantially covered with a second layer of adhesive, and a treatment. The device is adhered to the skin or nail and is backed by a first film layer. and a second film layer that is separated from the first film layer during use. Adhesive dressings suitable for application to the skin or nails are provided.

Preferably, the first film layer also contains skin or nails that hold the first film layer. and tab means suitable for attachment are provided.

Both the first and second film layers provide protection to the hands when applying the dressing to the skin or nail. It can be made transparent so that the wound can be seen through the patch. 1st Preferably, the film layer is permeable to water vapor but impermeable to water. The first and second film layers tend to have less adhesive strength or tack than the pressure sensitive adhesive. Advantageously, the bonding is by means of a second layer of adhesive in the opposite direction. The first film layer is , usually according to British Patent No. 1280631, and therefore animal skin and A water vapor permeable pressure-sensitive adhesive material for use on nails that includes at least one comprising a backing material having a pressure-sensitive adhesive over at least substantially the entire body-attached portion of the surface; The backing material and the adhesive are water vapor permeable and not adversely affected by water. , and at least one of the backing material and the adhesive is made of a synthetic polymer, and adhesive material and is impermeable to liquid water, said adhesive material having at least 300g/m2/24 hours/40℃/80% relative humidity (RH) water vapor Has air permeability. The preferred dry thickness is 15±2.25 microns.

Typically, the adhesive side of the first film layer is designed to prevent contamination of the first film layer. maintaining the adhesive side of the first layer in a sterile condition by substantially covering it with a layer of protective material; This also prevents the adhesive from being removed. Protective materials should be added to the dressing to some extent. It can provide rigidity and ease of handling, so the protective material itself For example, the protective material may be made of paper or cardboard (c ard) and, if necessary, a wax or silicone layer It can have an appropriate release surface that can be made into a material. emulsion silicone resists the formation of free radicals that reduce adhesive strength during sterilization by irradiation. The protective material is particularly preferred because it exhibits a pressure-sensitive adhesive of the first film layer. covering the entire side covered with the agent and removed before applying the first film layer to the wound. , thus prior to use (and when in a suitable shape for packaging) the first flap The film layer is sandwiched between the second film layer and the protective material.

The tab means is provided on the edge of the second film layer and if desired on the first film layer. Advantageously, it also comprises one or more tabs to which the tabs are also attached. The first film layer is There can be one tab at the end of one film layer.

The second film layer has two tabs at opposite ends of the second film layer. be able to. Each tab typically includes that of the first and/or second film layer. Extends beyond the edges of each. Both the first and second film layers are rectangular in shape. The tab means is often, for example, a pair of second film layers. one or two relatively rigid (e.g. paper or cardboard) tabs on opposite ends It consists of

If the dressing has more than one tab, these can be of different colors. For example, if the tab is color coded, the person wearing the dressing should: You will know which tabs to hold during the various steps of dressing the dressing. , thus which edge of the second film layer is separated from the first film layer or protective material. Appropriate information regarding the attachment of the dressing that can be used to determine whether it should be removed An indicator can be provided with the aid.

The tab means of the first film layer includes the tab means, the first and second film layers and the protective Depending on the relative size, shape and area of the materials, beyond the area of the second film layer or the second film layer or tabs of the second film layer. It can also be sandwiched between the step and the protective material.

The tab means of the first film layer may be 1 e.g. near one edge of the first film layer. or a strip of writing material disposed adjacent the edge. , which can be used, for example, to write the date or patient's name in close proximity to the wound site. The first film layer can be attached to the tab means. such writing material The paper is usually paper.

The second film layer is entirely larger (i.e., has a larger area) than the first film layer. The second film layer can be attached to one of the edges of the first film layer. , some or all. The second film layer is the first film layer. If the tab means is a strip of writing material, In particular, the strips may overlap the tab means of the first film layer. The second film layer, which is particularly preferred to keep the lip clean, may also e.g. The film layer is preferably thicker than the film layer 1, for example, 50±5 microns.

Both the pressure sensitive adhesive and the second adhesive layer are solvent soluble acrylic adhesives. Preferably, the pressure sensitive adhesive has a greater adhesive strength than the second adhesive layer. , thus the adhesive strength of the pressure sensitive adhesive (both before and after sterilization) is 400- 800g/25mm and the second adhesive layer is 100-18 after sterilization. It can be 0g/25mm.

According to a second aspect of the invention, an adhesive dressing suitable for application to the skin or nails. A method of treating the skin or nails by applying a device is provided; The method includes: substantially covering one side with a second layer of adhesive substantially covered with a pressure sensitive adhesive; adhering the overturned first film layer to the skin or nail; and a second layer of adhesive. The dressing is applied to the skin or nail from the other side of the first film layer that is substantially covered with separating a second film layer having tab means for retaining and adhering to the second film layer; Ru.

The adhesive dressing used is the adhesive dressing according to the first aspect of the invention. The preferred features are the same as in the first aspect.

The first film layer of the adhesive treatment device according to the present invention is applied to the skin to be treated. or on the nail (for example, when dressing a wound), place the protective material on the first flap. Peel from the adhesive side of the film layer, using the tab means of the second film layer. This is done by A second film layer is preferably colored at the opposite end thereof. colored first and second tabs, one tab [e.g. It is necessary to hold only the first tab) with one hand, and the protective material with the other hand. 0-order held by hand, protective material can be discarded, 0-order, 2nd film Bend or gently fold the dressing by moving the two tabs of the layer toward each other. Make the dressing into a U-shape. The center (i.e. this U-shaped handle) Apply the first film (bottom part) to the wound so that it does not yet adhere to the skin or nail. Can be attached to skin or nails by touching adjacent parts of the layers. Wear. Such operation is performed so that the point of contact between the skin or nail and the first film layer is from the center. By moving away substantially the entire first film layer is applied to the skin or nail. Continue to be applied. In this operation, the dressing is usually and held by the second tab, thus.

9 Contact with the skin or nails and the hand applying the dressing can thereby be avoided. Wear. Furthermore, the first film layer is supported by the second film layer during the deposition process. held so that the first film layer is not stretched, bent or folded. There is no tendency to get noticed.

The second film layer holds the second tab (e.g. colored white) in one hand. It can be peeled off from the adhered first film layer by The adhesive strength or adhesion between the skin or nail and the first film layer greater than the adhesive strength or tack between the film layer and the second film layer, but However, if the first film layer is also provided with tab means, this can be used to or gently press it against the skin or nail, avoiding contact with the nail, and use one hand to Hold one film layer in place while simultaneously using your other hand to remove the second film layer. Peel off.

In another embodiment of the invention, the first film layer is coated with a pressure sensitive adhesive. A scratch contact pad is provided on the side that is facing. The wound contact pad is 1, usually on the first flap. Because the wound contact pad is smaller than the film layer, the wound contact pad is adhered to the skin or nail. Define the means for providing information. The scratch contact pad can be of any suitable material, but Particularly preferably, the contact pad consists of an alginate, calcium alginate/ Non-woven, woven or knitted fabrics of alginate fibers such as sodium mixed salts are preferred. Yes.

The present invention will be explained below with reference to embodiments shown in the accompanying drawings, in which: FIG. 1 is a perspective view of an adhesive dressing according to the present invention, FIG. 2 is an enlarged sectional view taken along line I-I of the adhesive dressing shown in FIG. Figures 3 to 6 show the procedure for applying the adhesive dressing according to the present invention to the skin or nail piece. It is sectional drawing shown continuously.

FIG. 1 shows a rectangular piece protecting the adhesive-coated side 5 of the transparent first film 7. A dressing 1 consisting of a protective paper 3 is shown. The first film 7 also has the same width Although the protective paper 3 has a rectangular shape, its length is shorter than that of the protective paper 3. 1st The film 7 has a strip of paper 9 along one of its short edges. is provided. A second transparent film 11 backs the first film 7 By overlapping the first film 7 with , is sandwiched between the second film 11 and the protective paper 3. In the second film 11 , two white tabs 13 and one yellow tab 15 on the short edge. Differently colored tabs are provided, both of which are protected by protective paper 3. have the same width and are backed by paper (overlamp the first film) It is formed from a part of the transparent second film 11. The first film 7 It is considerably thinner than the second film. The first film 7 is a British patent No. 1280631, Example 1 or trademarked media. MEDIFIXI 6013 is attached to D.R.G. You can also use the one sold by DRGI (or the one with the trademark Wroblast Pure A (WAROPLAST PURE) is added and sold by BAYERI. A commercially available uncoated film may be coated.

In another embodiment, the first film layer is manufactured by H.M.S. Semi-permeable adhesive published by SOI (10 crn x 10 cm adhesive UK Drug Tariff (UK Drug Tariff) It conforms to Specification 37 (Specification 371).

The first film layer is a sterile stretchable water resistant film having a dry weight of 14 g/m''. The actual weight per unit area is usually 2 5 g/m”. The dry density of the first film layer is approximately 1.13±0 ．． 17g/cm", and the dry thickness is approximately 15±2.25 microns. Ru. The film is water vapor permeable, with a permeation rate of at least 500 g/m’, but 686 g/m’ per 24 hours (dry and When uncoated, it has an MVTR of 2500 g/m'' per 24 hours. In addition, it is preferably impermeable to water.

The film has a weight of at least 20 g/m" before irradiation, but more preferably a maximum Large”-Og/25-25- to provide adhesives of 25mm or larger Adhesive mass of 35g/m'' and irradiation diameter of 0.47g/m3 uniformly coated with a solvent-soluble acrylic adhesive, but irradiated with gamma rays for sterilization. Line irradiation is performed. However, the peel contact (to C steel of the first film layer) The fpeel adhesion level (1 level) is 450-7 before sterilization. 00g/25rrxm, preferably within the same range after sterilization, 25k Sterilization by gamma irradiation of Gy does not affect the adhesion of the first film layer. I found out that something is wrong. The coating weight of the adhesive can optionally be approximately 3.3 ± 4 g/m”. The first film layer can be stretched up to 600% and The elastic modulus can be 4N/Cm. Tensile strength is at least 0.2k g/cm, preferably 0.38 kg/cm.

The second film layer is preferably low density polyethylene, which is commercially available. can be obtained. The second film layer is less than the first film layer. Both are preferably 50% thicker, with a thickness of 5o±5 microns being particularly preferred. The second layer of adhesive between the first film layer and the second film layer is a pressure sensitive adhesive. is the same as, i.e., is preferably a solvent-based acrylic adhesive, but However, the adhesive strength of the second adhesive layer, that is, the adhesion force, is higher than that of the pressure-sensitive adhesive, for example. The preferred level of bond strength of the second adhesive layer is preferably up to 3 times lower than sterilization. The former is 45-110g/25mm like 50-100g/25rnm, After bacteria is 90-200g/25mm like 100-180g 725mm be.

Gamma irradiation increases the adhesive strength of adhesives, but the adhesive strength of pressure-sensitive adhesives is the first filter. As long as the adhesive strength between the film layer and the second film layer is 2 to 3 times greater, one Can be successfully deposited on the skin or nails.

The measurement of adhesion strength values (between films or, for example, on steel plates) Instron Type 4 on the desktop 301 machine, the measurement procedure is well known to those skilled in the art. Values quoted in the book are for 180 grid finish, where appropriate. It uses steel plates.

In use, by peeling off the protective paper 3 from the first film 7, the second film is removed. The adhesive side 5 of the lume 7 is exposed. Align the two tabs 13 and 15 of the second film. By combining them together (Fig. 4), one handle can be made into a U-shape. The bottom of the U-shape can be applied to the skin or nail 17 to be treated. (Then, the adhesive-coated side 5 of the first film 7 is attached to the skin or nails.) adhesive, and the remaining portion of the first film does not come into contact with the skin or nail 17. Tona (direction that moves the point of contact between the first film 7 and the skin or nail 17 away from the wound) ie along the U-shaped arms. first fill Once the entire adhesive side 5 of the film 7 is adhered to the skin or nail 17, the second film 11 is removed. , can be peeled off using tabs 13 and 15 (FIG. 5).

The paper strip 9 is held or gently pressed against the skin by one or more fingers of one hand. while the yellow tab 15 is held in the other hand and the second film 1 is pressed down. 1 is peeled off from the first film 7. Next, if desired, a strip of paper is removed. area of the skin or nail 17 to be treated. The area is thus covered with the first film 7 and the wound is closed as shown in Figure 6. protected in this way.

Figure 1 Figure 2 international search report

Claims (13)

[Claims] 1. One side (5) is substantially covered with a pressure sensitive adhesive and the other side is covered with a second layer of adhesive. a first film layer (7) substantially covered with a layer and a dressing (1) applied to the skin or having tab means (13, 15) for holding and attaching to the nail; a second film layer which is provided with a second film layer and which is separated from the first film layer during use. and a film layer (11) having adhesive properties suitable for adhering to the skin or nails. Handling tool (1). 2. The second layer of adhesive has less adhesive strength or tack than the pressure sensitive adhesive The care tool according to claim 1, characterized in that: 3. characterized in that the second film layer (11) is thicker than the first film layer (7) The treatment device according to claim 1. 4. The first film layer (7) has the ability to hold the first film layer to the skin or nail. Claims characterized in that tab means (9) are provided for adhering together. Handling devices listed in scope 1. 5. Both the first film layer (7) and the second film layer (11) are transparent. The care tool according to claim 1, characterized in that: 6. The first film layer (7) is permeable to water vapor and impermeable to water. 2. The dressing according to claim 1, which is characterized in that it has a sensitizing effect. 7. The pressure sensitive adhesive is characterized in that it is substantially covered by a layer of protective agent (3) The care tool according to claim 1. 8. The treatment according to claim 7, characterized in that the protective agent (3) is paper. Ingredients. 9. The tab means may include one or more tabs attached to the edges of the first and/or second film layer. 5. A dressing according to claim 4, characterized in that it consists of an upper tab. 10. The tab means includes two paper tabs located at opposite ends of the second film layer and and/or consisting of one tab located at the edge of the first film layer. The covering shell according to claim 1. 11. The tab means of the first film layer is also located near one edge of the first film layer. is a strip of writing material (9) located adjacent to said edge. The treatment tool according to claim 4, which is 12. The provision according to claim 11, characterized in that the writing material is paper. Tools. 13. Applying an adhesive dressing (1) suitable for adhesion to the skin or nails In the method of preparing the skin or nails, one side (5) is covered with pressure sensitive adhesive. adhering the substantially covered first film layer (7) to the skin or nail; the dressing from the other side of the first film layer substantially covered with the second layer of adhesive; a second fin having tab means (13, 15) for retaining and adhering to the skin or nail; separating the lume layer (11).