Sticking plaster

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 with paronychia (also called paronychia), a side effect of anticancer drugs, is increasing. Paronychia is an inflammation of the skin around the nails of the hands and feet, causing redness or swelling of the skin around the nail, and is often accompanied by pain. Conventionally, commercially available taping materials were wrapped around the nails to relieve pressure on the surrounding tissues such as the nails, prevent inflammation from becoming severe, and relieve pain (Non-Patent Document 1). In this case, however, users such as doctors, nurses, and patients themselves had to select taping materials from various types of commercially available products and cut them to an appropriate size each time they used them, which was troublesome. Therefore, especially in patients who visited the hospital as outpatients, taping at home was not continued, which caused paronychia to become severe.

[0003] In response to this problem, Patent Document 1 discloses a bandage used to alleviate the bite of the nail into the skin caused by paronychia, the bandage having a base layer, an adhesive layer, and a release layer, two ends extending in the longitudinal direction of the bandage having parallel portions, one of the two ends being longer than the other, both ends of the two ends being connected to both ends of the other two ends, and the two angles formed by the longer end of the two ends extending in the longitudinal direction and each of the other two ends are acute angles. 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 part where the nail bites into the skin, leading to a symptom alleviation effect. [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 bandage in Patent Document 1, a recess is provided toward the inside of the bandage at the longer of the two longitudinal ends in order to increase the exposed area of ​​the pads of the fingertips and not impair sensation in the fingers.

[0007] Here, the inventors discovered that if a suitable recess is made in the bandage, the tension applied to the bandage applied to the skin is more concentrated at the part of the bandage where the recess makes it thinner, and therefore the tension can be applied effectively to the affected area.However, if the recess is too deep, the narrowed part is prone to stretching, 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 a decrease in the tension applied to the 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 object, the present inventors have developed a bandage having a curved portion that defines a recess at the longer end of the two ends that extend in the longitudinal direction of the bandage, and We discovered that when the distance between the shorter end of the recessed portion is within a specific range, the reduction in tension applied to the bandage due to deformation around the recessed portion 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 bandage have parallel portions, One of the two ends is longer than the other; the longer of said 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 ends extending in the longitudinal direction 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 ends extending in the longitudinal direction of the bandage are connected to two other ends, The distance between the two ends of the longer end in the longitudinal direction of the bandage is 30 to 80 mm; The length of each of the other two ends is 3 to 40 mm; 4. The adhesive bandage according to any one of items 1 to 3, wherein the angle between the shorter end of the two ends extending in the longitudinal direction of the adhesive bandage and each of the other two ends is 160° or less. Item 5. A 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 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. Item 6. A bandage according to any one of items 1 to 5, wherein the length of the shorter end of the two ends extending in the longitudinal direction of the 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. Effect of the Invention

[0011] According to the present invention, the decrease in tension applied to the bandage around the concave portion of the bandage can be suppressed, so that tension can be applied to the skin more effectively after the bandage is applied to the skin. Therefore, when the bandage of the present invention is applied to the skin around the nail, the effect of alleviating nail indentation is improved, and inflammation around the nail can be prevented and / or treated more effectively. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a plan view of a bandage according to a first embodiment of the present invention. [Diagram 2] 1B-1B line cross-sectional view of the bandage of FIG. 1. [Diagram 3] (A) A schematic diagram showing the bandage of Figure 1A in use, (B) a schematic diagram of Figure 2(A) viewed from the palm side of the finger. [Figure 4] FIG. 2 is a plan view of a bandage according to a second embodiment of the present invention. [Diagram 5] FIG. 4 is a plan view of a bandage according to a third embodiment of the present invention. [Figure 6] 1 is a cross-sectional view of a bandage according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] As used herein, "prevention and / or treatment" is intended to refer to prevention, treatment, or both prevention and treatment.

[0014] A bandage according to a 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 an adhesive bandage 1 according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the adhesive bandage of FIG. 1 taken along line 1B-1B.

[0016] As shown in Figure 2, the adhesive bandage 1 of the first embodiment has a base layer 20, an adhesive layer 30, and a release material layer 40, and is specifically a tape constructed in such a way that the release material layer 40 is releasably laminated to one side of the base material 20 with the adhesive layer 30 interposed therebetween.

[0017] As shown in FIG. 1, the adhesive bandage 1 of the first embodiment has two ends, an upper end 11 and a lower end 12, which are two ends extending in the longitudinal direction of the adhesive bandage 1, and two other ends, a left end 13 and a right end 14, and both ends of the upper end 11 and the lower end 12 are connected to both ends of the linear left end 13 and the linear right end 14, respectively. The upper end 11 has linear portions 11a, 11b and a curved portion 11c of a substantially arc shape provided between the linear portions 11a, 11b, and both ends of the curved portion 11c are continuously connected to one end of each of the linear portions 11a, 11b. The curved portion 11c defines a recess 11d toward the adhesive bandage. The lower end 12 is linear, and each of the linear portions 11a, 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 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 ends opposite to the ends 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 bandage 1 is 30% to 80% of the maximum distance W in the direction perpendicular to the longitudinal direction of the bandage 1 between the upper end portion 11 and the lower end portion 12. 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 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 suppress a decrease in the tension applied to the bandage 1 around the recess 11d of the bandage 1, and the tension can be effectively applied to the skin. Since the tension can be effectively applied to the skin, for example, when the bandage 1 is applied to the skin to treat paronychia or ingrown nail, 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 will be too thin in the width direction around the recess 11d, and when the bandage 1 is pulled, deformation such as stretching will increase around the recess 11d, making the bandage 1 prone to deformation under tension. For this reason, when applying the bandage 1 to the skin to treat paronychia or ingrown nail, for example, it will be difficult to apply the bandage 1 with a certain level of tension or more, and it will be difficult to apply the bandage 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 shallow and difficult to stretch, so that when tension is applied to the bandage 1, the area near the affected area is easily deformed, making it difficult to apply the bandage 1. As a result, the tension applied to the skin near the affected area decreases, and the effect of alleviating the skin from being cut into the nail when the bandage 1 is wrapped around the finger and applied is reduced. Also, if the shortest distance d exceeds 80% of the maximum distance W, the area covered by the finger pad becomes large when the bandage 1 is wrapped around the finger and applied, so that the sensation of the finger may be impaired and the ease of movement of the fingertip and joints, that is, the degree of freedom, may be impaired 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. The bandage 1 has a shape symmetrical on the left and right sides with respect to the central plane in the longitudinal direction of the bandage 1. In this embodiment, α is an obtuse angle, and is preferably greater than 90° and less than 160°. When α is 160° or less, the angle between each of the left end 13 and the right end 14 and the lower end 12 is not too steep, and the bandage 1 can be attached or wrapped around the skin at an angle while applying tension, which is preferable. In addition, β is an acute angle, and is 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 lower end 12 is not particularly limited, but is preferably 25 to 80 mm, and the lengths of the left end 13 and the 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 straight line portions 11a and 11b is not particularly limited, but is usually 3 to 32 mm.

[0025] The base layer 20 is preferably elastic, since it causes less discomfort when applied to the skin. In addition, elasticity allows the bandage 1 to conform to the skin more easily and is less likely to peel off. In addition, the base layer 20 is preferably moisture permeable to prevent the bandage 1 from causing stuffiness in the paronychia-affected area and its surroundings.

[0026] Materials constituting the base material layer 20 include elastic base materials such as films, nonwoven fabrics, cotton fabrics, knitted fabrics, and laminated composites of nonwoven fabrics and films. Examples of the 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, extenders such as inorganic powders, dyes, pigments, etc. that are widely used in the art. The base layer 20 may be manufactured by any of uniaxial stretching, biaxial stretching, and non-stretching methods. The base layer 20 may be not only a single layer, but also a multi-layer 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 elasticity 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 composed of an adhesive for adhering the base layer 20 to the affected area.

[0030] Examples of adhesives constituting the adhesive layer 30 include rubber-based adhesives, acrylic-based adhesives, silicon-based adhesives, hydrocolloids, etc. In consideration of the adhesion and adhesive 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, etc. may be added to the adhesive as appropriate. It is preferable to set the molecular weight of the adhesive component high to suppress the penetration of the adhesive into the skin.

[0031] The thickness of the adhesive layer 30 using the adhesive is not particularly limited. In order to obtain moisture permeability, the thickness is preferably 100 μm or less, and more preferably 70 μm or less. On the other hand, in order to obtain the necessary adhesive strength, The thickness of the adhesive layer 30 is preferably 10 μm or more, and more preferably 20 μm or more. The adhesive layer 30 may be formed by applying a foaming paste, and the application method may be such that the adhesive layer 30 is formed in 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 may also be called release paper.

[0033] The release material layer 40 may have slits so that the release material layer 40 can be easily peeled off during use. In this embodiment, the release material layer 40 is composed of three parts 43, 44, and 45 separated by two slits 41 and 42 that are parallel to the central axis Ax of the adhesive bandage 1 and are equidistant from the central axis Ax. Therefore, the three parts 43, 44, and 45 can be peeled off separately from the positions of the slits 41 and 42 so as to expose the adhesive layer 30 at a timing that matches the application of the release material layer 40 to the skin. In addition, by having the slits 41 and 42, it is possible to prevent the adhesive strength from decreasing due to contact with the adhesive layer 30 during application.

[0034] Next, a method of using the bandage 1 will be described. As shown in Fig. 3(A), when an affected area 52 of paronychia is present in a region of the skin adjacent to the nail 51 of the thumb 50 of a patient's left hand, first, a portion 43 of the release material layer 40 of the bandage 1 is peeled off to expose the corresponding portion of the adhesive layer 30 (the release material layer 40 is on the lower side in a plan view in Fig. 1). At this time, peeling off the portion 43 of the release material layer 40 from the position of the 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 area to 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 having two sides, the straight portion 11a of the upper end 11 and the left end 13, 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, the bandage 1 terminates at the right end 14 between the first and second joints (above the proximal phalanx) on the back side of the thumb 50. The length of the upper end 11 is longer than the length of the lower end 12, and the upper end 11 forms an angle α with the left end 13 and the right end 14. This makes it easier to apply the bandage 1 in a diagonally downward direction, and prevents the tape from compressing the skin on the side of the nail 51, compared to when the length of the upper end 11 and the length of the lower end 12 are the same or shorter than the length of the lower end 12. In addition, for example, when the angle α between the upper end 11 and the left end 13 is 60° to 80°, the right end 14 is between the first and second joints (above the proximal phalanx) on the back side of the thumb 50, so that the range of motion of the finger is less likely to be restricted, and the skin on the side of the affected area 52 can 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 bandage 1 has a recess 11d, so that the exposed area of ​​the fingertip bell 53 above the first joint of the thumb 50 is larger than when the upper end 11 of the bandage 1 is straight. Therefore, the sensation of the fingertip bell, which is used for a large amount of work, is not easily impaired, and workability can be maintained for work, housework, and the operation of electronic devices such as smartphones. However, as described above, in order to suppress the decrease in tension applied to the bandage 1w around the recess 11d and to effectively apply tension to the skin, the shortest distance d between the curved portion 11c that defines 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 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 is placed on the skin on the side of the affected area 52, and the adhesive bandage 1 is wound in a spiral shape ( By applying the adhesive bandage 1 to the skin in a diagonally downward direction, the adhesive bandage 1 can be applied so as to relieve 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 are 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 the four corners 16 of the adhesive bandage 1, the corner formed by the straight portion 11a and the curved portion 11c, and the corner formed by the straight portion 11b and the curved portion 11c are rounded. The upper end portion 11 is rounded in an approximately curved shape at both ends, and between the two ends, the straight portion 11a, the approximately curved rounded portion 11e between the straight portion 11a and the curved portion 11c, the curved portion 11c, the straight portion 11b, and the approximately curved rounded portion 11f between the straight portion 11b and the curved portion 11c are continuously provided. The rounded portions 11e and 11f are continuous with the curved portion 11c through an inflection point. The lower end portion 12 is made of a straight portion 12a, except for both ends of the rounded approximately curved shape. Each of the left end 13 and the right end 14 is made up of straight portions 13a, 14a, except for both ends which are rounded and generally curved.

[0040] In the second embodiment, the shape of the bandage 1 in which both ends of the straight portions 11a, 11b, 12a, 13a, and 14a are not rounded is preferably the same as that of the bandage 1 in the first embodiment. For example, the length of the straight portion 11a is not particularly limited, but the length of the straight portion before the corners are rounded is 3 to 32 mm. The length of the straight portion 12a is not particularly limited, but the length of the straight portion before the corners are rounded is 25 to 80 mm. The length of the straight portions 13a and 14a is not particularly limited, but the length of the straight 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 R of the arc of the recess 11d is 25 mm, and the central angle θ is 74°. When the corners are rounded, the adhesive bandage 1 is more easily attached to the skin and is more easily adapted to the skin, and the adhesive bandage 1 is less likely to peel off from the skin. Even with this configuration, the adhesive bandage 1 can be applied to relieve pressure around the nail 51, as in the first embodiment.

[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 of the adhesive bandage 1, not only the recess 11d of the upper end 11, which is the longer end of the two ends 11, 12 extending in the longitudinal direction of the adhesive bandage 5, but also the lower end 12, which is the shorter end of the two ends 11, 12 extending in the longitudinal direction of the adhesive bandage 1, has straight parts 12a, 12b and a curved part 12c of a substantially arc shape provided between the straight parts 12a, 12b, and both ends of the curved part 12c are continuously connected to one end of each of the straight parts 12a, 12b, and the curved part 12c defines a recess 12d facing the adhesive bandage. By having the recess 12d on the lower end 12 side of the adhesive bandage 1, the contact area of ​​the adhesive bandage 51 and the patient's skin can be reduced. 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 taking the first to third embodiments as examples, but the present invention is not limited to these and various modifications are possible, as described below. The curved portion 11c may be formed so as to describe another curve such as a parabola, a hyperbola, etc., in a plan view, instead of a circular arc. The curved portion 12c may also be formed so as to describe another curve such as a parabola, a hyperbola, etc., in a plan view, instead of a circular arc. In the above first to third embodiments, the substrate 20, the adhesive layer 30, and the release material layer 40 are the same. Although the size is shown, the release material layer 40 may be larger than the substrate 20 and the adhesive layer 30. In particular, when the release material layer 40 is larger on the outside of the ends 13 and 14, it is preferable because the release material layer 40 is easy to peel off from the adhesive layer 30 and the release material layer 40 does not get in the way when applying. 6, the release material layer 40 may have a slit 46 in the center of the recess 11d of the upper end portion 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 be composed of two parts 47, 48 separated by the slit 46. Even in this configuration, the release material layer 40 can be peeled off from the part 47 or from the part 48 at the position of the slit 46, so that the affected area 52 can be operated without distinguishing whether it 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, 46, or the slits 41, 42, 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 pressure-sensitive adhesive layer 30 such that their ends overlap each other. The slits in the release material layer 40 do not have to be completely divided. For example, they may be in the form of dotted lines, or one or more slits may be left unbroken. 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. In addition, all six corners do not have to be rounded, and all four corners 16 do not have to be rounded, and 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 layer 40. Although the above first to third embodiments have been described with respect to the treatment or care of paronychia, the present invention can be used for the purpose of preventing and / or treating inflammation around the nail, and in particular, can be used as a bandage for preventing inflammation around the nail from becoming 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 treatment. 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 for treating inflammation but also for the purpose of keeping skin away from the nail. For example, they may be used when applying medicine to the nail groove or the vicinity thereof. 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

[0046] 1. Test Example 1 (1) Manufacture of adhesive bandages Examples 1 to 5 and Comparative Examples 1 and 2 The bandages of Examples 1 to 5 and Comparative Examples 1 and 2 were manufactured by punching out 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 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 bandages The bandages of Examples 1 to 5 and Comparative Examples 1 and 2 were evaluated for the following items. is the average value of a five-point scale (1 to 5) given by five adults with symptoms of ingrown toenails on their big toe.

[0048] (Effective in relieving nail indentation) The degree of pain relief was evaluated over the course of one day after wearing the device. 5: The relief was so strong that it continued for one day. 4: The relief effect continued for one day. 3: The symptoms did not continue until one day later, but the symptoms were reduced. 2: Almost no relief 1: No relief at all

[0049] (Easy to apply) The ease of application of the tape while stretching it was evaluated, as if to widen the area where the nail was digging into the skin. It was also evaluated whether the stretched recesses could be stably maintained during the procedure, and whether the stretched recesses had the effect of preventing deformation around the affected area. 5. It maintains proper elasticity, does not deform the affected area, and is very easy to apply. 4: It is slightly difficult to maintain its stretch, but there is almost no deformation near the affected area and it is easy to apply. 3: It is a little difficult to maintain its elasticity, and there is some deformation near the affected area, but it is not difficult to apply. 2: It is difficult to maintain its elasticity, and it is difficult to apply it near the affected area without deforming it. 1: The stretchability is not maintained, and it is impossible to apply the patch near 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, the inhibition of sensation due to being covered with the bandage, or the restriction of joint movement. 5: No discomfort or strange feeling at all 4: Almost no discomfort or strange feeling 3: There is some discomfort, but it does not interfere with walking. 2: There is a sense of discomfort that makes it difficult to walk. 1: The discomfort is so severe that it seriously impedes walking.

[0051] (Effect lasts 12 hours after application) Participants performed daily activities with the bandages attached to their toes, and then 12 hours after application, the tape's tension and adhesion to the toes were evaluated. 5: The tension and adhesion remain almost the same as when it was first installed. 4: It has lost some of its strength since it was first attached, but the tension and adhesion are still maintained. 3: It will lose some of its strength compared to when it was first installed, but the tension and adhesiveness will not decrease significantly. 2: There is a clear decrease in tension and adhesion 1: Tension and adhesion are greatly reduced

[0052] The results are shown in Table 1. The bandage of Example 1 was highly evaluated in all four categories. The bandage of Example 2 was also highly evaluated in all four categories, but it was found that the freedom of the toes was slightly impaired due to the large W, and the walking sensation was somewhat inferior to that of Example 1. The bandage of Example 3 was thin and stretched easily, making it difficult to apply tension, and the ease of application and the duration of effect were somewhat reduced, but the tension on the skin was maintained even after 12 hours, and the effect of alleviating nail bite was improved. The bandage of Example 4 had a shallow recess, so the stretching was difficult to escape, making it slightly less easy to apply, and the freedom of the finger sensation was slightly impaired and the walking sensation was reduced, but the duration of tension on the skin and the effect of alleviating nail bite were good. The bandage of Example 5 had a deep recess, was thin and stretched easily, and the force escaped, making it difficult to apply tension, but on the other hand, the walking sensation was excellent. The bandage of Comparative Example 1 had an insufficient recess, making it difficult to apply tension when wrapped around the thumb. In addition, when the bandage of Comparative Example 1 was applied to the joints, it became difficult to move and walking became difficult (data not shown). Because it was too stretchy, it was difficult to apply, and even after application, the force was lost and no tension was applied to the affected area, so the effect of tensioning the skin was not sustained and the effect of mitigating nail digging in was not achieved.

[0053] [Table 1]

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

[0055] (2) Performance evaluation of 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 was highly evaluated in all four categories. The bandage of Example 7 had a shallow recess, which made it difficult to stretch and made it slightly less easy to apply, and the freedom of the fingers' sense of freedom was slightly impaired, resulting in a poor walking sensation, but the sustained tension on the skin and the effect of alleviating nail bite were good. The bandage of Example 8 had a smaller length L than the bandage of Example 4, so there was an impression that it was difficult to apply tension. The bandage of Example 8 had a deep recess, was thin and stretched easily, and the force escaped, making it difficult to apply tension, but on the other hand, the walking sensation was excellent. However, since the recess was thin, the application state was easily disturbed by walking. The bandage of Comparative Example 3 had an insufficient recess, so it was difficult to apply tension when wrapped around the thumb. The bandage of Comparative Example 3 had a recess that was too thin, so it stretched and was difficult to apply, and even after application, the force escaped and no tension was applied to the affected area, so the effect of sustaining tension on the skin and the effect of alleviating nail bite were not achieved. The bandage of Comparative Example 4 was too thin in the recesses, stretching and making it difficult to apply, and even after application, the force was lost and no tension was applied to the affected area, resulting in no sustained tension effect on the skin or relief from nail digging in.

[0057] [Table 2]

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

[0059] (2) Performance evaluation of bandages The three items other than "walking sensation" in Test Example 1 were also evaluated for the 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 is a child size, so the length L was short and difficult to apply for adult panelists, but the effect of maintaining tension on the skin and mitigating nail intrusion was good. The length L of Example 10 is longer than that of Example 9, and the effect of maintaining tension and mitigating nail intrusion is improved because it is strongly fixed. The length L of the bandage of Comparative Example 5 is very short, so the linear parts 11a and 11b on both sides of the recess cannot be sufficiently long, and it is not a bandage of a practical size. The length L of the bandage of Comparative Example 6 is too long to be wrapped around the finger and protrudes to the sole of the foot, which has a negative effect on durability.

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

[0062] 1...bandage, 11...upper end as the longer of the two ends, 11a, 11b...straight portions as parallel portions, 11c...curved portion, 11d...concave, 12...lower end as the shorter of the two ends, 12a, 12b(,12)...straight portions as parallel portions, 13...left end as the other two ends, 14...right end as the other two ends End, d... shortest distance between the curved part and the shorter end, W... maximum distance between the two ends extending in the longitudinal direction of the bandage in a direction perpendicular to the longitudinal direction, 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 longitudinal ends of the bandage have parallel portions; One of the two ends has a length greater than the other, the longer of said 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.

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. Both ends of the two longitudinally extending ends of the bandage are connected to two other ends, The distance between the two ends of the longer end in the longitudinal direction of the bandage is 30 to 80 mm; The length of each of the other two ends is 3 to 40 mm; A bandage as described in any one of claims 1 to 3, wherein the angle between the shorter of the two ends extending in the longitudinal direction of the bandage and each of the other two ends is 160° or less.

5. A bandage as described in any of claims 1 to 4, 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.

6. 6. A bandage according to any one of claims 1 to 5, wherein the length of the shorter of the two ends extending in the longitudinal direction of the bandage is 25 to 80 mm.

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

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