bandage

Abstract

To provide a sticking plaster that prevents tension added to itself from decreasing around a recessed portion of the plaster and can effectively give the tension to a skin.SOLUTION: A sticking plaster (1) has parallel portions (11a,11b,12) of two edges (11,12) extending in a longitudinal direction of the sticking plaster (1). One of two edges (11,12) is longer in a length than the other. The longer one (11) of the two edges has a curve (11c) forming a recessed portion (11d) toward the sticking plaster. The shortest distance (d) between the curve (11c) and the shorter edge (12) is 30%-80% of the maximum distance (W) in a direction perpendicular to the longitudinal direction of the sticking plaster between the two edges extending in the longitudinal direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to adhesive bandages. [Background technology]

[0002] The number of patients suffering from paronychia (also known as paronychia), a side effect of anticancer drugs, is increasing. Paronychia is inflammation of the skin around the nails of the hands and feet, causing redness and swelling of the skin around the nail and often accompanied by pain. Conventionally, commercially available tape has been wrapped around the nail to relieve pressure on the surrounding tissues, such as the nail, prevent the inflammation from worsening, and alleviate pain (Non-Patent Document 1). However, this method requires users, such as doctors, nurses, and patients, to select a tape from a variety of commercially available products and then cut it to the appropriate size each time they use it, which is cumbersome. Therefore, particularly for outpatients, taping at home is difficult to continue, which can lead to the worsening of paronychia.

[0003] Patent Document 1 addresses this problem and discloses a bandage used to alleviate nail penetration into the skin caused by paronychia, which has a base layer, an adhesive layer, and a release layer, and has two parallel ends extending in the longitudinal direction of the bandage, one of which is longer than the other, and both ends of the two ends are connected to both ends of the other two ends, and the longer of the two longitudinal ends forms two acute angles with each of the other two ends.This bandage is applied by wrapping it around the skin around the nail while pulling it, which applies tension to the skin after application, widening the gap between the nail and the area where the nail is penetrating the skin, thereby alleviating the symptoms. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] WO2017 / 130838 [Non-patent literature]

[0005] [Non-Patent Document 1] Medical Progress vol.241 No.8 p.588-592(2012) Summary of the Invention [Problem to be solved by the invention]

[0006] In some embodiments of the adhesive bandage in Patent Document 1, a recess facing inward is provided at the longer of the two longitudinal ends in order to increase the exposed area of ​​the pads of the fingertips and not impair the sensation of the fingers.

[0007] Here, the inventors discovered that if an appropriate recess is made in the adhesive bandage, the tension applied to the adhesive bandage when it is applied to the skin is more concentrated at the part of the bandage where the recess makes it thinner, and therefore the tension is effectively applied to the affected area.However, if the recess is too deep, the thinner part tends to stretch, and the applied tension escapes around the recess, making it difficult for it to act as tension on the skin.

[0008] The object of the present invention is to provide a bandage that can suppress the reduction in tension applied to a bandage with a recess around the recess, and can apply tension to the skin more effectively. [Means for solving the problem]

[0009] In order to achieve the above-mentioned objective, the inventors discovered that when the distance between the curved portion that defines the recess at the longer of the two ends extending longitudinally of the bandage and the shorter of the two ends is within a specific range, the reduction in tension applied to the bandage due to deformation around the recess of the bandage can be suppressed, and tension can be effectively applied to the skin, thereby completing the present invention.

[0010] The present invention encompasses the embodiments described below. Item 1. The two ends extending in the longitudinal direction of the adhesive bandage have parallel portions, One of the two ends is longer than the other, the longer of the two ends has a curved portion defining a recess toward the bandage; A bandage in which the shortest distance between the curved portion and the shorter end is 30% to 80% of the maximum distance between the two longitudinal ends in a direction perpendicular to the longitudinal direction of the bandage. Item 2. The adhesive bandage according to Item 1, wherein the curved portion is substantially arc-shaped. Item 3. The adhesive bandage according to Item 1 or 2, which is symmetrical about a central axis perpendicular to the longitudinal direction. Item 4. Both ends of the two longitudinally extending ends of the adhesive bandage are connected to two other ends, The distance between the two longer ends in the longitudinal direction of the adhesive bandage is 30 to 80 mm; The length of each of the other two ends is 3 to 40 mm, Item 4. The adhesive bandage according to any one of items 1 to 3, wherein the angle formed between the shorter of the two longitudinal ends of the adhesive bandage and each of the other two ends is 160° or less. Item 5. An adhesive bandage according to any one of items 1 to 4, wherein the parallel portion of the longer of the two ends includes two straight portions that connect to both ends of the curved portion, the two straight portions have the same length, and the length of each of the two straight portions is greater than 10% and less than 40% of the length of the longer of the two ends in the longitudinal direction of the adhesive bandage. Item 6. The adhesive bandage according to any one of items 1 to 5, wherein the length of the shorter of the two longitudinal ends of the adhesive bandage is 25 to 80 mm. Item 7. The adhesive bandage according to any one of Items 1 to 6, which is an adhesive bandage for preventing and / or treating paronychia. [Effects of the Invention]

[0011] According to the present invention, since the reduction of the tension applied to the bandage can be suppressed around the concave portion of the bandage, the tension can be more effectively applied to the skin after the bandage is attached to the skin. Therefore, when the bandage of the present invention is applied to the skin around the nail, for example, the effect of relieving the nail ingrowth is improved, and the prevention and / or treatment of inflammation around the nail can be performed more effectively.

Brief Description of the Drawings

[0012] [Figure 1] Plan view of the bandage according to the first embodiment of the present invention. [Figure 2] Cross-sectional view taken along line 1B-1B of the bandage in FIG. 1. [Figure 3] (A) Schematic view showing the usage state of the bandage in FIG. 1A, (B) Schematic view seen from the ventral side of the finger of FIG. 2(A). [Figure 4] Plan view of the bandage according to the second embodiment of the present invention. [Figure 5] Plan view of the bandage according to the third embodiment of the present invention. [Figure 6] Cross-sectional view of the bandage of another example of the present invention.

Modes for Carrying Out the Invention

[0013] In this specification, "prevention and / or treatment" shall mean prevention, treatment, or both prevention and treatment.

[0014] The bandage according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3(B).

[0015] FIG. 1 is a plan view of the bandage 1 according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line 1B-1B of the bandage in FIG. 1.

[0016] As shown in FIG. 2, the bandage 1 according to the first embodiment has a base material layer 20, an adhesive layer 30, and a release material layer 40. Specifically, the release material layer 40 is laminated on one surface of the base material 20 via the adhesive layer 30 in a peelable manner to form a tape.

[0017] As shown in FIG. 1, the adhesive bandage 1 of the first embodiment has two longitudinally extending ends: an upper end 11 and a lower end 12; and two other longitudinal ends: a left end 13 and a right end 14. The ends of the upper end 11 and the lower end 12 are connected to the linear ends of the left end 13 and the right end 14, respectively. The upper end 11 has linear portions 11a and 11b and a substantially arc-shaped curved portion 11c disposed between the linear portions 11a and 11b. The curved portion 11c has two ends that are continuously connected to one end of each of the linear portions 11a and 11b. The curved portion 11c defines a recess 11d that faces the adhesive bandage. The lower end 12 is linear, and the linear portions 11a and 11b of the upper end 11 and the lower end 12 are parallel to each other.

[0018] The length L of the upper end 11 in the longitudinal direction of the adhesive bandage 1, in other words, the distance between both ends of the upper end 11, is longer than the length of the lower end 12, in other words, the distance between both ends of the lower end 12, and the lower end 12 is connected to the left end 13 and the right end 14 at an angle α, and the left end 13 and the right end 14 are connected to the lower end 12 at the end opposite to the end connected to the upper end 11. The upper end 11 is connected to the left end 13 and the right end 14 at an angle β.

[0019] The shortest distance d between the curved portion 11c of the upper end portion 11 and the lower end portion 12 in the width direction perpendicular to the longitudinal direction of the adhesive bandage 1 is 30% to 80% of the maximum distance W between the upper end portion 11 and the lower end portion 12 in the direction perpendicular to the longitudinal direction of the adhesive bandage 1. The shortest distance d between the curved portion 11c and the lower end portion 12 can also be said to be the width of the point in the direction perpendicular to the longitudinal direction of the adhesive bandage 1 that is narrowest due to the indentation of the curved portion 11c.

[0020] When the shortest distance d is 30% to 80% of the maximum distance W, it is possible to prevent the tension applied to the bandage 1 from decreasing around the recess 11d of the bandage 1, and to effectively apply tension to the skin. Because tension can be effectively applied to the skin, when the bandage 1 is applied to the skin to treat, for example, paronychia or ingrown nails, the effect of alleviating nail indentation is also increased.

[0021] If the shortest distance d is less than 30% of the maximum distance W, the bandage 1 becomes too narrow in the width direction around the recess 11d, and when the bandage 1 is pulled, deformation such as stretching increases around the recess 11d, making the bandage 1 more susceptible to deformation under tension. For this reason, when applying the bandage 1 to the skin to treat paronychia or ingrown nails, for example, it becomes difficult to apply it with a certain level of tension or more, making it difficult to apply it in a way that widens the area where the nail is digging into the skin.

[0022] If the shortest distance d exceeds 80% of the maximum distance W, the recess 11d becomes shallower and is less likely to stretch, so that applying tension to the bandage 1 causes the area around the affected area to deform more easily, making it difficult to apply the bandage 1. This reduces the tension applied to the skin around the affected area, reducing the effect of preventing the nail from digging into the skin when the bandage 1 is wrapped around the finger and applied. Also, if the shortest distance d exceeds 80% of the maximum distance W, a larger area of ​​the finger pad is covered when the bandage 1 is wrapped around the finger and applied, which may impair sensation in the finger and reduce the ease of movement of the fingertips and joints, i.e., the degree of freedom, compared to when the finger pad is exposed.

[0023] The adhesive bandage 1 is symmetrical with respect to a central axis Ax perpendicular to the longitudinal direction. In other words, the adhesive bandage 1 is symmetrical with respect to the central plane of the longitudinal direction of the adhesive bandage 1. In this embodiment, α is an obtuse angle, preferably greater than 90° and less than 160°. If α is less than 160°, the angles formed by the left end 13 and the right end 14 and the lower end 12 are not too steep, which is preferable because the adhesive bandage 1 can be applied or wrapped around the skin at an angle while applying tension. Furthermore, β is an acute angle, preferably greater than 20° and less than 90°. The length L is not particularly limited, but is preferably 30 to 80 mm, more preferably 40 to 70 mm. The maximum distance is not particularly limited, but is preferably 2 to 40 mm, more preferably 6 to 30 mm. The length of the bottom end 12 is not particularly limited, but is preferably 25 to 80 mm, and the lengths of the left end 13 and right end 14 are not particularly limited, but are preferably 3 to 40 mm, more preferably 8 to 30 mm.

[0024] The length of the linear portions 11a and 11b is not particularly limited, but is usually 3 to 32 mm.

[0025] The base layer 20 is preferably stretchable so that it causes less discomfort when applied to the skin. Stretchable base layer 20 also conforms to the skin more easily, making the bandage 1 less likely to peel off. Furthermore, the base layer 20 is preferably highly moisture-permeable to prevent the bandage 1 from becoming stuffy in and around the paronychia-affected area.

[0026] Examples of materials constituting the base layer 20 include stretchable base materials such as film, nonwoven fabric, cotton fabric, knitted fabric, and laminated composites of nonwoven fabric and film. Examples of materials for these base materials include polyethylene, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polystyrene, polyamide, polyolefin, nylon, cotton, pulp, acetate rayon, rayon, rayon / polyethylene terephthalate composites, polyacrylonitrile, polyvinyl alcohol, acrylic polyurethane, ester polyurethane, ether polyurethane, styrene-isoprene-styrene copolymer, styrene-butadiene-styrene copolymer, styrene-ethylene-propylene-styrene copolymer, and ethylene-vinyl acetate copolymer.

[0027] The base layer 20 may contain various strength control agents widely used in the art, extenders such as inorganic powders, dyes, pigments, etc. The base layer 20 may be manufactured by any of uniaxial stretching, biaxial stretching, and non-stretching methods. The base layer 20 may have not only a single layer, but also a multilayer structure in which multiple layers of the same or different types are stacked.

[0028] The thickness of the base layer 20 is not particularly limited, but is preferably 1000 μm or less, more preferably 500 μm or less, and even more preferably 300 μm or less, from the viewpoint of easily obtaining stretchability and moisture permeability. On the other hand, the thickness of the base layer 20 is preferably 15 μm or more, more preferably 20 μm or more, and even more preferably 30 μm or more, from the viewpoint of easily obtaining strength.

[0029] The adhesive layer 30 of the adhesive bandage 1 of this embodiment is made of an adhesive for adhering the base layer 20 to the affected area.

[0030] Examples of adhesives that may be used to form the adhesive layer 30 include rubber-based adhesives, acrylic-based adhesives, silicone-based adhesives, and hydrocolloids. Taking into consideration the adhesion and strength between the base layer 20 and the adhesive, and between the skin and the adhesive, an isocyanate-based crosslinking agent, a metal chelate-based crosslinking agent, a tackifier, and the like may be added to the adhesive as appropriate. It is preferable to set the molecular weight of the adhesive component high to inhibit the adhesive from penetrating into the skin.

[0031] The thickness of the adhesive layer 30 using an adhesive is not particularly limited. To obtain moisture permeability, the thickness is preferably 100 μm or less, more preferably 70 μm or less. On the other hand, to obtain the necessary adhesive strength, the thickness of the adhesive layer 30 is preferably 10 μm or more, more preferably 20 μm or more. The adhesive layer 30 may also be formed by applying a foaming glue, and the application method may be such that the adhesive layer is formed into a regular or random pattern, such as a dotted or striped pattern.

[0032] A known release material used in adhesive bandages can be used for the release material layer 40. Examples of the release material include paper, plastic film, etc. The release material layer 40 is sometimes also called release paper.

[0033] The release material layer 40 may have slits to facilitate peeling of the release material layer 40 during use. In this embodiment, the release material layer 40 is composed of three portions 43, 44, and 45 separated by two slits 41 and 42 that are parallel to and equidistant from the central axis Ax of the adhesive bandage 1. This allows the three portions 43, 44, and 45 to be peeled separately from the positions of the slits 41 and 42 to expose the adhesive layer 30 at the timing appropriate for application of the release material layer 40 to the skin. Furthermore, the presence of the slits 41 and 42 prevents the adhesive layer 30 from being touched and losing its adhesive strength during application.

[0034] Next, we will explain how to use adhesive bandage 1. As shown in Figure 3(A), when paronychia-affected area 52 is present in the area of ​​skin adjacent to nail 51 of thumb 50 of a patient's left hand, first, portion 43 of release material layer 40 of adhesive bandage 1 is peeled off to expose the corresponding portion of adhesive layer 30 (in Figure 1, release material layer 40 is on the lower side in plan view). At this time, peeling portion 43 of release material layer 40 from the position of slit 41 facilitates peeling. Next, the left end 13 of the adhesive bandage 1, with the adhesive layer 30 exposed at portion 43 of the release material layer 40, is placed on the skin on the side of the affected area 52, and the portion along the left end 13 is adhered to the skin starting from the acute corner formed by the straight portion 11a of the upper end 11 and the left end 13 as two sides, portion 44 of the release material layer 40 is peeled off to expose the corresponding portion of the adhesive layer 30, and while pulling the adhesive bandage 1 to relieve the pressure between the nail 51 and the affected area 52, the adhesive bandage 1 is applied to the skin in a spiral shape (diagonally downward) so that the adhesive layer 30 comes into contact with the skin, and finally portion 45 of the release material layer 40 is peeled off and applied to the skin.

[0035] In the drawing, adhesive bandage 1 terminates at right end 14 on the dorsal side of thumb 50, between the first and second joints (above the proximal phalanx). Upper end 11 is longer than lower end 12, and upper end 11 forms an angle α with left end 13 and right end 14. This makes it easier to apply adhesive bandage 1 diagonally downward, and prevents the tape from compressing the skin on the side of nail 51, compared to when upper end 11 and lower end 12 are the same length or shorter than lower end 12. Furthermore, for example, when the angle α between upper end 11 and left end 13 is 60° to 80°, right end 14 is located on the dorsal side of thumb 50, between the first and second joints (above the proximal phalanx), which minimizes restriction of the finger's range of motion and allows the skin on the side of affected area 52 to be pulled with appropriate strength.

[0036] As shown in FIG. 3(B), when the thumb 50 is viewed from the ventral side, the upper end 11 of the adhesive bandage 1 has a recess 11d, which increases the exposed area of ​​the fingertip pad portion 53 above the first joint of the thumb 50 compared to when the upper end 11 of the adhesive bandage 1 is straight. This prevents loss of sensation in the fingertip pad, which is used for a large amount of work, and maintains good operability for work, housework, and operating electronic devices such as smartphones. However, as described above, to prevent a decrease in tension applied to the adhesive bandage 1w around the recess 11d and effectively apply tension to the skin, the shortest distance d between the curved portion 11c defining the recess 11d and the lower end 12 is set to 30% to 80% of the maximum distance (W) between the upper end 11 and the lower end 12 in the direction perpendicular to the longitudinal direction of the adhesive bandage 1.

[0037] Since the adhesive bandage 1 is symmetrical with respect to the central axis Ax, if the affected area 52 is on the left side of the nail 51, the right end 14 of the adhesive bandage 1 can be placed on the skin to the side of the affected area 52 and the adhesive bandage 1 can be applied to the skin in a spiral shape (diagonally downward), thereby relieving the pressure between the nail 51 and the affected area 52.

[0038] Next, a bandage according to a second embodiment of the present invention will be described with reference to Fig. 4. The same components as those in the bandage 1 of the first embodiment will be given the same reference numerals as in Fig. 1, and the description thereof will be omitted.

[0039] The adhesive bandage 1 of the second embodiment differs from the adhesive bandage 1 of the first embodiment in that all six corners of the adhesive bandage 1 are rounded: four corners 16, the corner formed by the linear portion 11a and the curved portion 11c, and the corner formed by the linear portion 11b and the curved portion 11c. The upper end portion 11 is rounded in an approximately curved shape at both ends, and between the ends, there are successively: linear portion 11a, an approximately curved rounded portion 11e between linear portion 11a and the curved portion 11c, the curved portion 11c, linear portion 11b, and an approximately curved rounded portion 11f between linear portion 11b and the curved portion 11c. The rounded portions 11e and 11f are continuous with the curved portion 11c via an inflection point. The lower end portion 12 consists of a linear portion 12a, except for the rounded, approximately curved ends. The left end 13 and the right end 14 each consist of straight portions 13a, 14a, except for the rounded, generally curved ends.

[0040] In the second embodiment, it is preferable that the shape of the adhesive bandage 1 in which both ends of the linear portions 11a, 11b, 12a, 13a, and 14a are not rounded corresponds to the shape of the adhesive bandage 1 in the first embodiment. For example, the length of the linear portion 11a is not particularly limited, but the length of the linear portion before the corners are rounded is 3 to 32 mm. The length of the linear portion 12a is not particularly limited, but the length of the linear portion before the corners are rounded is 25 to 80 mm. The lengths of the linear portions 13a and 14a are not particularly limited, but the length of the linear portion before the corners are rounded is 3 to 40 mm.

[0041] For example, in the second embodiment, L is 50 mm, 11a and 11b are 10 mm, W is 15 mm, d is 10 mm, the radius of the arc of the recess 11d is R = 25 mm, and the central angle θ = 74°. When the corners are rounded, the adhesive bandage 1 is more easily attached to the skin and fits well, making it less likely to peel off from the skin. With this configuration, as in the first embodiment, the adhesive bandage 1 can be applied to relieve pressure around the nail 51.

[0042] Next, a bandage according to a third embodiment of the present invention will be described with reference to Fig. 5. The same components as those in the bandage 1 of the first embodiment are given the same reference numerals as in Fig. 1, and the description thereof will be omitted.

[0043] In the third embodiment, the adhesive bandage 1 includes not only a recess 11d at the upper end 11, the longer of the two longitudinal ends 11, 12 of the adhesive bandage 5, but also a lower end 12, the shorter of the two longitudinal ends 11, 12, which includes straight sections 12a, 12b and a substantially arc-shaped curved section 12c between the straight sections 12a, 12b. Both ends of the curved section 12c are continuously connected to one end of each of the straight sections 12a, 12b, and the curved section 12c defines a recess 12d facing the adhesive bandage. Having the recess 12d on the lower end 12 side of the adhesive bandage 1 reduces the contact area of ​​the adhesive bandage 51 with the patient's skin. With this configuration, the adhesive bandage 1 can be applied to relieve pressure around the nail 51, as in the first and second embodiments.

[0044] Up to this point, the present invention has been described using the first to third embodiments as examples, but the present invention is not limited to these and various modifications such as those described below are possible. The curved portion 11c may be formed so as to describe another curve such as a parabola or hyperbola in plan view instead of a circular arc in plan view. The curved portion 12c may also be formed so as to describe another curve such as a parabola or hyperbola in plan view instead of a circular arc in plan view. In the first to third embodiments described above, the substrate 20, the adhesive layer 30, and the release material layer 40 are shown to be the same size, but the release material layer 40 may be larger than the substrate 20 and the adhesive layer 30. In particular, if the release material layer 40 is larger on the outside of the ends 13 and 14, this is preferable because it makes it easier to peel the release material layer 40 from the adhesive layer 30 and also prevents the release material layer 40 from getting in the way when applying the film. As shown in Figure 6, the release material layer 40 may have a slit 46 in the center of the recess 11d of the upper end 11, that is, at a position on the central axis Ax perpendicular to the longitudinal direction of the adhesive bandage 1, and the release material layer 40 may consist of two parts 47, 48 separated by the slit 46. Even in this configuration, the release material layer 40 can be peeled off from part 47 or part 48 at the position of the slit 46, so operation can be performed regardless of whether the affected area 52 is on the left or right side of the nail 51. The release material layer 40 may be provided with slits similar to the slits 41, 42, and 46, or the slits 41, 42, and 46 may be omitted. The three release material layer portions 43, 44, and 45 or the two release material layer portions 47 and 48 may be laminated on the adhesive layer 30 with their ends overlapping each other. The slits in the release material layer 40 do not have to be completely separated. For example, they may be dotted lines or may have one or more slits remaining. The configurations of the rounded corners 16, the corners formed by the straight portion 11a and the curved portion 11c, and the corners formed by the straight portion 11b and the curved portion c of the adhesive bandage 1 of the second embodiment may be applied to the adhesive bandage 1 of the first or third embodiment, or to any adhesive bandage within the scope of the present invention. Also, not all six corners need to be rounded, and not all four corners 16 need to be rounded; one, two, or three corners 16 may be rounded. Additional layers may be provided on the substrate 20, between the substrate 20 and the adhesive layer 30, and between the adhesive layer 30 and the release material layer 40. While the first to third embodiments have been described with regard to the treatment or care of paronychia, the present invention can also be used for the purpose of preventing and / or treating inflammation around the nail, and in particular as a bandage for preventing the inflammation around the nail from becoming more severe and / or for relieving pain. In addition to paronychia, the present invention can also be used for the purpose of preventing / treating symptoms around the nail 51, such as treating ingrown nails, or for other uses requiring strong tension near the end application portion in taping treatments. The adhesive bandages of the present invention, including the adhesive bandages 1 of the first to third embodiments and the modified adhesive bandages, may be used not only to treat inflammation but also to keep skin away from the nail. For example, they may be used to apply medicine to the nail grooves. Although the thumb is shown in Figures 3(A) and (B), the bandage of the present invention may be applied to the index finger, middle finger, ring finger, and / or little finger of the hand, or to at least any of the five toes.

[0045] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. [Example]

[0046] 1. Test Example 1 (1) Manufacture of adhesive bandages Examples 1 to 5 and Comparative Examples 1 and 2 The adhesive bandages of Examples 1 to 5 and Comparative Examples 1 and 2 were manufactured by using a medical single-sided adhesive tape material consisting of a 0.2 mm thick polyurethane nonwoven fabric substrate, an acrylic adhesive layer, and a paper release layer, and punching out the tape into the shape of the second embodiment shown in Figure 4 with the dimensions of L, W, and d shown in Table 1.

[0047] (2) Performance evaluation of adhesive bandages The adhesive bandages of Examples 1 to 5 and Comparative Examples 1 and 2 were evaluated for the following items. The evaluation for each item was the average of the scores on a 5-point scale from 1 to 5 given by five adults who had subjective symptoms of ingrown toenails on their big toes.

[0048] (Effective in alleviating nail ingrown The degree of pain relief was assessed over the course of one day after application. 5: The relief was so great that it continued for one day. 4: The relief effect continued for one day. 3: The symptoms did not continue until 1 day later, but the symptoms decreased, but there was a mitigating effect. 2: Almost no relief 1: No relief effect at all

[0049] (Easy to apply) The ease of application of the tape while stretching it was evaluated, as if widening the area where the nail had dug into the skin. The ease of maintaining the stretched recesses stably during application and the effectiveness of stretching the recesses in preventing deformation around the affected area were also evaluated. 5. Maintains proper stretch, does not deform the area around the affected area, and is very easy to apply 4: It is slightly difficult to maintain its stretch, but there is almost no deformation around the affected area and it is easy to apply. 3: It is a little difficult to maintain its stretch, and there is some deformation near the affected area, but it is not difficult to apply. 2: It is difficult to maintain its stretch, and it is difficult to apply it to the affected area without deforming it. 1: The stretch cannot be maintained, making it impossible to apply the patch to the affected area without deforming it.

[0050] (Walking sensation) We evaluated whether there was any discomfort or strangeness when walking due to the tightness of the bandage, sensory inhibition caused by being covered with the bandage, or restriction of joint movement. 5: No discomfort or strange feeling at all 4: Almost no discomfort or strangeness 3: There is some discomfort, but it does not interfere with walking. 2: There is a sense of discomfort and it interferes with walking. 1: There is a strong sense of discomfort and it interferes with walking.

[0051] (Effect lasts 12 hours after application) With the bandages attached to the toes, participants performed their daily activities, and then 12 hours after application, the tape's tension and adhesion to the toes were evaluated. 5: The tension and adhesiveness remain almost the same as when first installed. 4: It has loosened a little since it was first installed, but the tension and adhesiveness are still maintained. 3: The tension will drop from the initial setting, but the adhesive strength and tension will not decrease significantly. 2: There is a clear decrease in tension and adhesion. 1: Significant decrease in tension and adhesion

[0052] The results are shown in Table 1. The bandage of Example 1 received all four high ratings. The bandage of Example 2 also received four high ratings, but because its W was large, the freedom of the toes was slightly impaired, and it was found that the walking sensation was somewhat inferior to that of Example 1. The bandage of Example 3 was thin and stretchy, making it difficult to apply tension, and the ease of application and duration of effect were somewhat reduced, but the tension on the skin was maintained even after 12 hours, and the effect of alleviating nail indentation was improved. The bandage of Example 4 had shallow recesses, making it difficult to release stretch, making it slightly less easy to apply, slightly impairing the freedom of finger sensation and reducing the walking sensation, but the duration of tension on the skin and the effect of alleviating nail indentation were good. The bandage of Example 5 had deep recesses, was thin and stretchy, and released force, making it difficult to apply tension, but the walking sensation was excellent. The bandage of Comparative Example 1 had insufficient recesses, making it difficult to apply tension when wrapped around the thumb. Furthermore, when the adhesive bandage of Comparative Example 1 was applied to the joint, it became difficult to move, causing problems with walking (data not shown).The adhesive bandage of Comparative Example 2 was too thin at the recessed portion, stretching and making it difficult to apply, and even after application, the force was released, so no tension was applied to the affected area, and it did not provide a sustained tension effect on the skin or mitigate nail digging in.

[0053] [Table 1]

[0054] 2. Test Example 2 (1) Manufacture of adhesive bandages Using the same substrate, adhesive layer, and release layer materials as those used in the production of the adhesive bandage of Test Example 1, adhesive bandages of Examples 6 to 8 and Comparative Examples 3 and 4 were produced with the dimensions shown in Table 2.

[0055] (2) Performance evaluation of adhesive bandages The adhesive bandages of Examples 6 to 8 and Comparative Examples 3 and 4 were also evaluated for the same four items as in Test Example 1. The results are shown in Table 2.

[0056] The bandage of Example 6 received high ratings in all four categories. The bandage of Example 7 had shallow recesses that made it difficult for the bandage to stretch, making it slightly less easy to apply, slightly reducing the freedom of finger sensation and reducing the walking sensation, but it maintained tension on the skin and had a good effect of alleviating nail indentations. Because the length L was smaller than that of the bandage of Example 4, some felt it was difficult to apply tension. The bandage of Example 8 had deep recesses, was thin, and stretched easily, allowing force to escape and making it difficult to apply tension, but had an excellent walking sensation. However, because the recesses were thin, the application state was easily disturbed by walking. The bandage of Comparative Example 3 had insufficient recess depth, making it difficult to apply tension when wrapped around the thumb. The bandage of Comparative Example 3 had recesses that were too thin, making it difficult to apply because it stretched and was difficult to apply, and even after application, force escaped and no tension was applied to the affected area, resulting in no sustained tension effect on the skin or effect of alleviating nail indentations. The adhesive bandage of Comparative Example 4 was too thin in the recessed areas, stretching and making it difficult to apply, and even after application, the force was lost and no tension was applied to the affected area, so it did not provide a sustained tensioning effect on the skin or alleviate nail digging in.

[0057] [Table 2]

[0058] 3. Test Example 3 (1) Manufacture of adhesive bandages Using the same substrate, adhesive layer, and release layer materials as those used in the production of the adhesive bandage in Test Example 1, adhesive bandages in Examples 9 and 10 and Comparative Examples 5 and 6 were produced with the dimensions shown in Table 2.

[0059] (2) Performance evaluation of adhesive bandages The three items excluding "walking sensation" in Test Example 1 were also evaluated for the adhesive bandages of Examples 9 and 10 and Comparative Examples 5 and 6. The results are shown in Table 3.

[0060] The bandage of Example 9 was a pediatric size, so the length L was short and difficult for adult panelists to apply, but the sustained tension effect on the skin and the effect of alleviating nail indentation were good. Example 10 had a longer length L than Example 9, and since it was more firmly fixed, the sustained tension effect and the effect of alleviating nail indentation were improved. The bandage of Comparative Example 5 had a very short length L, which did not allow for sufficient length for the linear portions 11a and 11b on both sides of the recess, making it an unrealistic size bandage. The bandage of Comparative Example 6 had a length L that was too long to wrap around the toes and protruded onto the soles of the feet, adversely affecting its durability.

[0061] [Table 3] [Explanation of symbols]

[0062] 1...bandage, 11...upper end as the longer of the two ends, 11a, 11b...straight portion as the parallel portion, 11c...curved portion, 11d...recess, 12...lower end as the shorter of the two ends, 12a, 12b (, 12)...straight portion as the parallel portion, 13...left end as the other two ends, 14...right end as the other two ends, d...shortest distance between the curved portion and the shorter end, W...maximum distance between the two longitudinal ends in a direction perpendicular to the longitudinal direction of the bandage, Ax...central axis perpendicular to the longitudinal direction, L...distance between both ends of the longer of the two ends, α...angle between the shorter of the two ends and each of the other two ends

Claims

1. The two longitudinally extending ends of the bandage have parallel portions, One of the two ends has a length greater than the other, the longer of the two ends has a curved portion defining a recess toward the bandage; the shorter of the two ends (i) consists only of a straight portion and rounded, generally curved ends, or (ii) consists only of a straight portion; The shortest distance between the curved portion and the shorter end is 33% to 80% of the maximum distance between the two longitudinal ends in a direction perpendicular to the longitudinal direction of the bandage; The two ends of the adhesive bandage extending in the longitudinal direction are connected to the other two ends, The distance between the two longer ends in the longitudinal direction of the adhesive bandage is 30 to 80 mm; The other two ends each have a length of 3 to 40 mm; A bandage in which the angle formed between the shorter of the two longitudinal ends of the bandage and each of the other two ends is 160° or less.

2. 2. The adhesive bandage of claim 1, wherein the curved portion is substantially arc-shaped.

3. 3. The adhesive bandage according to claim 1 or 2, which is symmetrical about a central axis perpendicular to the longitudinal direction.

4. A bandage as described in any one of claims 1 to 3, wherein the parallel portion of the longer of the two ends includes two straight portions connecting to both ends of the curved portion, the two straight portions have the same length, and the length of each of the two straight portions is greater than 10% and less than 40% of the length of the longer of the two ends in the longitudinal direction of the bandage.

5. 5. The adhesive bandage according to claim 1, wherein the length of the shorter of the two longitudinal ends of the adhesive bandage is 25 to 80 mm.

6. The adhesive bandage according to any one of claims 1 to 5, which is an adhesive bandage for preventing and / or treating paronychia.

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