JP6865001B2 - Joint attachment material - Google Patents

Description

The present invention relates to a joint attachment material, and more specifically, to a joint attachment material suitable for attachment to joints such as knees, elbows, wrists, and ankles.

Generally, for pain in joints such as knees and elbows, anti-inflammatory analgesics containing menthol or the like in a plaster are used. The anti-inflammatory analgesic is generally a square or a small circle using a thin knitted cloth or a film support, but there are the following problems when it is attached to joints such as knees and elbows.

-Since the support is not stiff or curls, it is difficult to handle and stick.
・ When attached to joints, there is a feeling of tension when flexing, which is unpleasant.
・ If the edge floats, the support will be thin and curl up, and it will stick to clothes, causing discomfort.
-There is a square 3-piece liner product that is easy to attach to the flat surface, but it is easy to wrinkle when peeling off the liner at the articular process and it is difficult to attach.
-Since the small circle cannot be pasted so as to wrap around the joint, if the pain is strong, a satisfactory effect cannot be obtained unless multiple sheets are pasted.

On the other hand, pain may be reduced by fixing the joints with taping, and the pre-cut tape, which is made by pre-cutting the adhesive sheet into a certain shape, does not have specialized sticking knowledge unlike ordinary strip-shaped taping tape. However, it has the advantage that it can be applied easily and quickly.

Conventionally, there has been disclosed an adhesive member for a knee that is U-shaped and has a specific angle formed by a U-shaped curved base (for example, Patent Document 1). The adhesive member described in Patent Document 1 is used by being laterally attached so as to surround the upper and lower sides of the knee joint while pulling and extending the U-shaped end portion.

Further, there are known knee supporters (see, for example, Patent Document 2) that relieve knee pain during walking, lower body clothing that protects the knee having a taping function, and crimped stockings such as lower limb protective clothing (for example). , Patent Documents 3 and 4).

Japanese Unexamined Patent Publication No. 2005-28025 Japanese Unexamined Patent Publication No. 2016-47968 Gazette No. 6-41641 Japanese Patent No. 3012819

However, in the adhesive member described in Patent Document 1, since the U-shaped end is pulled and stretched and attached sideways so as to surround the upper and lower sides of the knee joint, it is not stretched too much so as not to cause skin irritation. It is necessary, and there is a concern that it will take time to paste. In addition, the patella and the skin above it have a lot of friction with clothes, so the presence of the tape may make you feel uncomfortable, or you may feel discomfort or peeling pain when the end of the tape is turned over or sticks to your clothes, or your knees. There is a concern that it may hinder the bending of the. In addition, since the shape covers the side surface of the knee, there is a concern that wrinkles are likely to occur in the portion when the knee is flexed, so that skin irritation is likely to occur, and the application site is limited to the knee only.

Further, according to the adhesive member described in Patent Document 1, rolling of the patella can be suppressed by pressing and fixing the patella so as to surround the patella, but by pressing the upper part of the patella with the tape, the patella and the femur can be suppressed. It interferes with the movement of the quadriceps tendon. If the flexion and extension of the knee is strongly restricted, the strength of the quadriceps femoris will be weakened, so it cannot be said that it is effective for improving knee pain in the long term.

In addition, the ones described in Patent Documents 2, 3 and 4 are compressed by covering and tightening the human body in a tubular shape, so that when a size that does not fit is used or the human body is excessively tightened depending on the posture, blood circulation is poor. There is a problem that the material gets stuffy or shifts when worn for a long time, and the material stretches with repeated use and the effect is attenuated.

Therefore, it does not stretch at the time of application, and just by applying it naturally, a pressing force can be obtained on the joint part, it does not shift even if it is used for a long time, there is no tightening or stuffiness except for the affected part, and the joint attachment with less tension feeling. The material is desired. In particular, there is a demand for a joint attachment material that can be easily attached by oneself to seniors who have pain in the joint and can obtain a taping effect.

The present invention has been made in view of the above circumstances, and even when it is attached to a joint portion, it can be attached easily and with less wrinkles. At the time of attachment, the movement of the joint is appropriately restricted and taping is performed. It is an object of the present invention to provide a joint adhesive which is effective and does not easily come off even when rubbed against clothes and does not easily adhere to clothes.

In order to solve the above problems, the present invention is a joint attachment material formed by laminating a support and an adhesive, and both of a pair of arms facing each other with a recess that opens outward. It is formed in a U shape consisting of a connecting portion that connects the base ends of the arms, and the width of the inner circumference of the recess is x, the depth of the inner circumference of the recess is d, and the width of the arm is w. When the outer peripheral vertical width including the recess and the connecting portion is h
x = 40 ± 20 (mm),
d = 0.7x to 1.5x (mm),
w = 25-2x (mm),
h = d + 25 to 1.3 (x + 2w) (mm),
The support has elasticity in at least one of two vertical and horizontal directions so as to have elasticity in the support direction which is the bending direction of the joint portion at the time of attachment, and the direction having the elasticity. The feature is that the 10% tensile load is in the range of 1.0 N / 25 mm or less, the 50% tensile load is in the range of 15 N / 25 mm or less, and the rigidity of the laminate of the support and the adhesive is at least 11 mm or more. (Claim 1).

With this configuration, when the patch material according to the present invention is attached to each joint such as the thumb, ankle, elbow, and knee, the protruding portion of the joint is paired with the concave portion with a part of the joint open. It can be attached so as to be wrapped around the arm of the body, and a suitable feeling of support and fit can be obtained.
Further, if the 10% tensile load is larger than 1.0 N / 25 mm, or the 50% tensile load is larger than 15 N / 25 mm, a feeling of tension is felt when the joint is bent and stretched, and a load is applied to the skin. May cause skin irritation.
The reason why the stiffness of the laminate of the support and the adhesive is at least 11 mm or more is that if the stiffness of the laminate of the support and the adhesive is less than 11 mm, there will be no stiffness and wrinkles will occur when pasting. This is because a feeling of support and a feeling of hold cannot be obtained.

Further, the 10% tensile load means a tensile load when a test piece having a predetermined shape is pulled to 10% at a predetermined speed, and a 50% tensile load means a test piece having a predetermined shape and 50% at a predetermined speed. The tensile load when pulled to. The term "rigidity" means that a test piece having a predetermined shape is placed on a horizontal table having a slope at a predetermined angle so that the test piece is aligned with the scale baseline, and the test piece is slid to cause the test piece to fall within a predetermined time. It refers to the moved length of the test piece read from the scale at that time.

The sticking material according to the present invention has joints such as thumb, ankle, elbow, and knee as sticking parts, but there is a suitable size range according to each sticking part, and the size of each individual's body. Since the suitable size differs depending on the size, the patch material according to the present invention includes a size corresponding to the size.

In the present invention, the tip corners on the opening side of both arms are formed in a convex arc shape, and the outer side connecting the base end side of both arms and the connecting portion is a gentle curve recessed inward. It is preferably formed in a shape (claim 2).

With this configuration, the outer side connecting the base end side of both arms and the connecting portion is formed in a gently curved shape that is recessed inward, so that it is possible to suppress the overall turning up. ..

Further, in the present invention, it is preferable that the outer side of the connecting portion facing the concave portion is formed in a concave arc shape (claim 3 ). With this configuration, it is possible to prevent the product from being turned up as a whole.

Further, in the present invention, the above-mentioned pressure-sensitive adhesive includes methyl salicylate, l-menthol, camphor, nonylate vanillylamide , salicylic acid, glycol salicylate, acetylsalicylic acid, peppermint oil, timol, nicotinic acid benzyl ester, capsicum extract, capsaicin, fervinac, and flurphenam. Butylate, piroxicam, indomethacin, ketoprofen, planoprofen, feprazone, flurbiprofen, loxoprofen, amphenac sodium, oxaprozin, emorfazone, thiaprofen, fenbufen, fentiazac, diclofenac sodium, diflunisar, ibuprofen piconol, bendazac, It is preferable to contain one or more medicinal components of suprofen, buprenorfin hydrochloride, pentazocin, and butorphanol tartrate (claim 4 ).

With this configuration, joint pain can be alleviated by the penetration of the anti-inflammatory analgesic by the medicinal ingredient.

Further, in the present invention, there is a stiffness for easy sticking, a feeling of support and a feeling of holding are felt when sticking to the joint part, and in order to prevent the joint part from being caught in clothes and being turned over, and the joint part at the time of sticking. In order to reduce the burden on the joint portion, it is preferable that the total thickness of the laminate of the support and the pressure-sensitive adhesive is in the range of 0.55 to 0.75 mm (claim 5 ).

Here, if the total thickness of the laminate of the support and the adhesive is thinner than 0.55 mm, the feeling of support and hold is insufficient when attached to the joint portion, and if it is thicker than 0.75 mm, the garment Friction with and is likely to occur.

In addition, in the present invention, a liner that can be peeled off from the pressure-sensitive adhesive is further provided, and the liner is provided at a position deviated from the center at the bottom of the recess, and at the base end side of both arms and the connecting portion. It is preferable that the slits are formed into three parts by a pair of slits connecting the positions of the outer side of the connecting portion (claim 6 ). In this case, the slit may be on a straight line, but it is preferably formed in a corrugated curve (claim 7 ).

With this configuration, the liner divided into three parts can be peeled off one by one and attached to the joint portion at the time of attachment. In this case, since the central portion divided into three can be widened, the alignment can be facilitated. Further, since the slit is provided at a position close to the diagonal line, the orientation at the time of peeling does not change significantly, and wrinkles can be suppressed. Further, in this case, by forming the slits in a corrugated curve shape, the grip portions of the second and third liners can be provided at three places, and the liner can be easily peeled off (claim 8 ).

According to the present invention, since it is configured as described above, the following effects can be obtained.

(1) According to the inventions of claims 1 to 3 , the joint can be attached so that the protruding portion of the joint is wrapped with the recess and the pair of arms in a state where a part of the joint is open. Even when it is attached to a part, it can be easily attached with less wrinkles. Further, by attaching the joint so as to wrap it, the movement of the joint is appropriately restricted and a taping effect can be obtained. Further, by forming the outer side connecting the base end side of both arms and the connecting portion into a gently curved shape recessed inward, it is possible to suppress the overall turning up.

(2) According to the invention of claim 4 , in addition to the above (1), joint pain can be alleviated by permeation of an anti-inflammatory analgesic by a medicinal ingredient. Therefore, for those who avoid exercising due to joint pain, the pain can be relieved to a level where they can exercise.

(3) According to the invention of claim 5 , in addition to the above (1) and (2), it can be attached more easily and with less wrinkles, and the properties and shape of the support thereof. Even if the edge is rubbed against the clothes, it is hard to peel off, and even if it is peeled off, it is hard to curl toward the support side, so that it is hard to stick to the clothes. In addition, the burden on the joint portion at the time of sticking can be reduced.

(4) According to the invention of claim 6 , when the liner is attached, the liner divided into three parts can be peeled off one by one and attached to the joint portion. Therefore, in addition to the above (1) to (3). , It can be attached more easily and surely. In this case, by forming the slits in a corrugated curve shape, the liner can be easily peeled off by providing the grip portions of the second and third liners at three places, so that the liner can be attached more easily and reliably. (Claim 7 ).

It is a front view (a), the back view (b) and the enlarged cross-sectional view (c) along line I-I of the joint part sticking material which concerns on this invention. It is a schematic surface view explaining the shape of the joint part sticking material which concerns on this invention. It is a back view which shows the state which a part of the liner in this invention was peeled off. It is a perspective view which shows the different state which attached the joint part attachment material which concerns on this invention to a knee. It is explanatory drawing which shows the shape of the test piece of an Example and a comparative example used for an evaluation test.

Hereinafter, embodiments of the joint attachment material according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the joint sticking material 1 (hereinafter referred to as the sticking material 1) according to the present invention includes a support 2 having elasticity in two vertical and horizontal directions, an adhesive 3, and an adhesive. It is formed in a three-layer structure in which a peelable liner 4 is laminated on 3.

The sticking material 1 has a horizontally long U-shape including a pair of arm portions 11 and 11 facing each other with a recess 10 having an opening 10a on the outside and a connecting portion 12 connecting the base ends of both arm portions 11 and 11. Is formed in.

Further, the tip corners of the arms 11 and 11 on the opening 10a side are formed in a convex arc shape, and the outer side 14 connecting the base ends of the arms 11 and 11 and the connecting portion 12 is inward. It is formed in a gentle curved shape having a concave arc portion 13a. Further, the outer side of the connecting portion 12 facing the recess 10 is formed in a concave arc shape. In this case, the bottom portion 10b of the recess 10 of the sticking material 1 is formed in a gentle V shape, and the sticking material 1 is formed symmetrically with respect to the center line C passing through the center of the recess 10. A concave arc portion 13b is formed in the center of the outer side of the connecting portion 12 facing the concave portion 10.

In the sticking material 1 formed as described above, the width of the inner circumference of the recess 10 is x, the depth of the inner circumference of the recess 10 is d, the width of the arm 11 is w, and the outer circumference including the recess 10 and the connecting portion 12. When the vertical width is h,
It is preferable to set x = 40 ± 20 (mm), d = 0.7x to 1.5x (mm), w = 25 to 2x (mm), h = d + 25 to 1.3 (x + 2w) (mm). ..

The sticking material according to the present invention has joints such as thumb, ankle, elbow, and knee as sticking parts, but there is a suitable size range according to each sticking part, and the size of each individual's body. Since the suitable size differs depending on the size, the patch material according to the present invention includes a size corresponding to the size.

<About x>
There is a suitable range for x according to each joint, and if x is too small or too large, the following problems occur.

● For knees ・ If x is small, it is easy to stretch when bending the knee.
-If x is large, the inner circumference is too wide with respect to the patella and it is not possible to suppress the rolling of the patella, so that a feeling of support or hold in the knee joint cannot be obtained.

● For elbows ・ If x is small, it is easy to stretch when bending the elbow.
-If x is large, it is too large for the protrusion of the elbow joint, and a feeling of support or hold cannot be obtained. In addition, areas where inflammation is likely to occur (lateral epicondyle of the humerus and the origin of the extensor muscles of the carpal extensor in the backhand tennis elbow, medial epicondyle of the humerus in the forehand tennis elbow and golf elbow, and medial epicondyle in the medial baseball elbow The medial collateral ligament and the epicondyle head of the lateral baseball elbow cannot be covered, and compression and drug reach cannot be achieved.

● In the case of thumb (tenosynovitis, etc.) ・ If x is small, it is difficult to surround the base of the thumb, and wrinkles are likely to occur in the sticking material. Also, the fit is impaired.
-If x is large, it will get caught on other fingers or palms, so wrinkles are likely to occur on the sticking material. Also, the fit is impaired.

● In the case of ankle ・ If x is large, the anterior talofibular ligament and calcaneofibular ligament, which are often damaged by varus sprain, cannot be covered, and a feeling of support and hold cannot be obtained.
However, considering the thumb, which is the minimum attachment site, and the knee, which is the maximum attachment site, x is larger than 20 mm and smaller than 60 mm.

In order to achieve the effect of the present invention, each dimension of the U-shaped outer shape is limited to a certain range according to x as described above, and the reason is as follows.

<About w>
-If w is smaller than 25 mm, both arms of the sticking material cannot support the joints, so that a sufficient feeling of support and hold cannot be obtained. In addition, since the adhesion area is small, it is easy to peel off.
-If w is larger than 2x, the adhesive material is applied to the side surface of the joint, so that the adhesive material is easily wrinkled and peeled off at the time of bending, and it causes skin irritation. In addition, the adhesive material wraps around to the inside of the joint (the back side of the knee), and the adhesive material is stretched, which hinders the bending motion and causes stuffiness and itching.

<About d>
・ If d is smaller than 0.7x, the patella and articular process cannot be sufficiently supported.
・ If d is larger than 1.5x, it will surround the joint. It is easy to peel off and hinders the movement of ligaments.

<About h>
-If h is smaller than (d + 25), the recessed portion of the sticking material cannot support the joint, so that a sufficient support feeling and hold feeling cannot be obtained. In addition, since the adhesion area is small, it is easy to peel off.
・ If h is larger than 1.3 (x + 2w), the sticking area is too large, which is troublesome when wearing, and the ends of both arms tend to overlap at the time of sticking. Become.

<Support>
The support body 2 needs to have a thickness and a firmness that provide a feeling of support and a feeling of holding in order to support the joint portion. On the other hand, it is necessary to have appropriate extensibility and elasticity so as to wrap and compress the joint portion and follow the bending and stretching of the joint to some extent. In addition, it is desirable that the material has a certain degree of elasticity for ease of sticking, that is, for ease of handling by hand.

Therefore, as the material, cloth is preferable, knitted cloth is particularly preferable, and weft knitting is particularly preferable. Further, as the material, polypropylene, polyethylene, polyester, polyamide, polyurethane, rayon and the like can be used, but polyester is particularly preferable. The most preferable embodiment is a weft knitting of polyester yarn, and the thickness of the yarn is preferably about 75 denier and the basis weight is about 140 to 210 g / m ² .

<Adhesive>
As the pressure-sensitive adhesive 3, general pressure-sensitive adhesives such as acrylic, rubber-based, and silicone-based adhesives can be used, and among these, rubber-based or acrylic-based pressure-sensitive adhesives are preferable.

Preferred rubber-based pressure-sensitive adhesives include, for example, natural rubber, styrene-isoprene-styrene block copolymer, polyisobutylene, polybutene, polyisoprene, a rubber-like elastic body such as a mixture of two or more of these, and a rosin-based resin. Examples thereof include those to which a tackifier such as terpen-based resin, Kumaron-inden resin, and petroleum-based resin is added. If necessary, a softener such as liquid polybutene, liquid polyisobutylene, or oil; a filler such as titanium oxide or zinc oxide; an antioxidant such as butylhydroxytoluene can be added to the rubber-based pressure-sensitive adhesive. .. Among these, from the viewpoint of adhesiveness, a styrene-isoprene-styrene block copolymer having a main rubber-like elastic body is preferable.

Preferred acrylic pressure-sensitive adhesives include, for example, 70 to 96% by weight of (meth) acrylic acid alkyl ester having an alkyl group having 4 to 12 carbon atoms, 0 to 29% by weight of (meth) acrylic acid alkoxypolyalkylene glycol ester. Examples thereof include copolymers obtained by copolymerizing 1 to 10% by weight of a functional group-containing monomer such as a hydroxyl group or a carboxy group, and 0 to 25% by weight of other copolymerizable vinyl monomers.

As the acrylic pressure-sensitive adhesive, a predetermined amount of each monomer is dissolved in an organic solvent such as toluene, stirred in a nitrogen atmosphere at a high temperature, and polymerized using a reaction initiator such as a peroxide. , As it is or diluted with an organic solvent can be used.

Acrylic adhesives generally have poor cohesive power as they are in the polymer state, and the adhesive may remain on the skin surface at the time of peeling. Therefore, a cross-linking agent composed of a polyfunctional compound or the like may be added to the adhesive solution. It is preferable to carry out cross-linking with. Further, the acrylic pressure-sensitive adhesive may contain fine bubbles in the pressure-sensitive adhesive in the pressure-sensitive adhesive layer forming step in order to impart moisture permeability and breathability.

There is elasticity to make it easier to stick, you can feel support and hold when sticking to the joints, and it is necessary to consider the burden on the joints when sticking to prevent it from getting caught in clothes and turning over. There is. Therefore, the total thickness of the laminated body of the support 2 and the pressure-sensitive adhesive 3 is in the range of 0.55 to 0.75 mm, and the physical characteristics of the laminated body are at least in the support direction which is the bending direction of the joint portion at the time of sticking. In the above, (1) a range of 10% tensile load of 1.0 N / 25 mm or less, (2) a range of 50% tensile load of 15 N / 25 mm or less, and (3) a range of rigidity and softness of 11 to 25 mm are preferable. Further, it is particularly preferable that the physical properties are in the above range in both the vertical and horizontal directions.

The pressure-sensitive adhesive 3 may contain one or more medicinal ingredients such as methyl salicylate, l-menthol, camphor, and nonylate vanillylamide.

<Liner>
The liner 4 is a peeling body used for the sticking material 1, and is provided in a peelable state on the surface of the three layers of the pressure-sensitive adhesive opposite to the surface on which the support 2 is provided for the purpose of protecting the three layers of the pressure-sensitive adhesive. As the liner 4, a release paper, a release film, or the like, which is commonly used in the field of affixing materials, can be used. For example, a paper base material such as high-quality paper or glassine paper that has undergone silicone mold release treatment, a polyester film, or the like can be used. The thickness of the stripped body is not particularly limited, but is usually 20 μm or more, preferably 40 μm or more, and the upper limit thereof is about 500 μm.

The liner 4 is formed by liner pieces 4a, 4b, 4c divided into three by a pair of slits 5 connecting a position deviated from the center of the bottom portion 10b of the recess 10 and a position of a curved outer side 14 of the connecting portion 12. ing. Further, the slit 5 is formed in a corrugated curve shape.

By forming the liner 4 with the liner pieces 4a, 4b, 4c divided into three in this way, even if the liner piece 4a in the central portion is peeled off, the liner pieces 4b and 4c at both ends remain and touch the adhesive surface. It becomes possible to paste without any problem, and it is possible to facilitate pasting. In this case, since the liner piece 4a in the central portion divided into three can be widened, the alignment can be facilitated. Further, since the slit 5 is provided as described above, it is possible to suppress sticking wrinkles without significantly changing the peeling direction when the liner piece is peeled off.

Next, a method for manufacturing the patch 1 will be described.
<Manufacturing method>
In the adhesive processing to the support 2, the adhesive liquid is uniformly applied onto the liner 4 by a conventional method and dried, or after forming three layers of the adhesive by hot melt coating, the support is subjected to adhesive processing. Adhesive tape is obtained by sticking it to the surface and winding it up.

The coating thickness of the pressure-sensitive adhesive 3 is usually 5 to 500 μm, preferably 30 to 300 μm after drying. The adhesive tape 1 is made by cutting the adhesive tape original fabric with a leather blade or the like so as to have a narrow width of about 150 to 350 mm in the original fabric width direction, and then winding it into a fixed length to form an adhesive tape roll. Is cut out into the above-mentioned shape by a reciprocating cutting machine or the like (at the same time, only the liner may be half-cut to provide a slit), or only the support 2 and the adhesive 3 layers are half-cut, and the adhesive 1 is used. To make.

Next, an example of how to use the pasting material 1 will be described.
<How to use>
When the sticking material 1 formed as described above is stuck on a joint portion such as a knee, the procedure can be as follows. First, the liner piece 4a in the central portion is peeled off, and the exposed adhesive 3 is attached to the lower part of the patella 20. Next, one of the left and right liner pieces 4b and 4c, for example, the liner piece 4b is peeled off, and the exposed adhesive 3 is attached to one side of the patella 20. Then, the remaining liner piece 4c can be peeled off, the exposed adhesive 3 can be attached to the other side of the patella 20, and the adhesive 1 can be attached so as to cover the lower portion and both sides of the patella 20 (FIG. 4). See (a)).
However, in the case of a sticking material made of a support having elasticity in only one direction and not in the other direction, the sticking material is attached so that the stretchable direction of the support is the bending direction of the joint portion.

According to the sticking material 1 of the above embodiment, the support 2 is thick and stiff, so that it is hard to curl and is easy to stick. Also, even if the end is turned over during sticking, it is hard to curl up, so it is hard to stick to clothes. In addition, since it is formed in a U-shape with a roundness as a whole, it does not hurt during use or application.

In addition, it can give a sense of security to the user with a feeling of support and a feeling of holding by wrapping the joint. Since it is due to the stiffness of the support 2 rather than the tension, there is an advantage that skin irritation is unlikely to occur because the effect can be obtained without stretching and applying the tape.

In addition, since the shape is easy to fit in the flexed part of the joint and is difficult to peel off, if a square patch is applied to the joint, significant tension will be applied to the articular process, which may cause peeling. Therefore, the joint protrusion can be attached while avoiding the apex of the patella 20, the flexion motion of the joint is not hindered, and the wobbling of the patella can be suppressed. Since joint pain mainly occurs in tendons, ligaments, etc., it is not necessary to cover the patella 20 of the articular process. In addition, since the upper part of the knee is not covered, the shape is suitable for those who exercise to prevent knee pain.

Moreover, since it is a compact U-shape, it is easy to paste. Also, when attaching to the knee, the angle of the knee is not selected. That is, as shown in FIG. 4B, even if the person sits on a chair or the like and the knees are attached at a substantially right angle without pulling, wrinkles do not occur and the feeling of tension is suppressed even when deeply bent. It is hard to peel off again.

The sticking material 1 according to the present invention has properties and shapes that are particularly suitable for joints such as elbows and shoulders in addition to the above-mentioned knees, but the sticking site is not limited because it can be used for flat parts such as the waist. ..

Further, the outer side 14 connecting the base end side of both arm portions 11 and 11 and the connecting portion 12 is formed in a gentle curved shape having a concave arc portion 13a recessed inward, and is formed on the outer side facing the recess 10. Since the concave arc portion 13b is formed, it is difficult to rub against clothes by following the unevenness of the long bones (tibia, humerus, etc.) adjacent to the joint, and it is possible to prevent turning and peeling.

Further, since the liner 4 is formed of three liner pieces 4a, 4b, 4c divided into three, it is easy to align and temporarily attach the liner 4. In this case, since the slit 5 is formed in a corrugated curve shape, the liner pieces 4b and 4c can be easily peeled off by providing the grip portions 6 of the second and third liner pieces 4b and 4c at three places. Therefore, it can be easily and surely attached.

Although the liner piece 4a in the central portion is wide, it is unlikely that the adhesive surfaces will curl up and stick to each other even if they are handled with one hand by combining with the support 2 having elasticity.

In the patch 1, it is preferable that the pressure-sensitive adhesive 3 contains one or more medicinal components of an analgesic and anti-inflammatory agent. Specific analgesic and anti-inflammatory agents include salicylate, methyl salicylate, glycol salicylate, acetylsalicylic acid, L-menthol, camphor (D-form, L-form, DL-form), peppermint oil, timol, nicotinic acid benzyl ester, capsicum extract, capsaicin, Vanillylamide nonylate, fervinac, butyl flufenamic acid, piroxicam, indomethacin, ketoprofen, planoprofen, feprazone, flurbiprofen, loxoprofen, amphenac sodium, oxaprozin, emorphazone, thiaprofen, fenbufen, fentiazac, diclofenac sodium, diclofenac Examples include ibuprofen piroxicam, bendazac, sproffen, buprenorfin hydrochloride, indomethacin, butorphanol tartrate.

By including the medicinal ingredient in the pressure-sensitive adhesive 3 in this way, joint pain can be further alleviated by the penetration of the anti-inflammatory analgesic by the medicinal ingredient. Therefore, for those who avoid exercising due to joint pain, the pain can be relieved to a level where they can exercise.

Examples of the present invention will be specifically described below. The present invention is not limited to the examples, and can be applied within the range including the technical idea of the present invention.

<Examples 1 and 2>
The following hot melt type pressure-sensitive adhesive composition is melt-mixed in a heating container and mixed.
<Adhesive composition>
(A) Thermoplastic elastomer [(a1) SIS block copolymer (1), SIS5002 manufactured by JSR Co., Ltd.] 25.3 parts by mass (a) Thermoplastic elastomer [(a2) SIS block copolymer (2), Quintac (registered trademark) 3520 manufactured by Nippon Zeon Co., Ltd.] 10.9 parts by mass (b) Adhesive resin [(b1) Rodin resin manufactured by Arakawa Chemical Industry Co., Ltd., KE-311] 21.7 parts by mass ( b) Adhesive-imparting resin [(b2) Terpen resin manufactured by Yasuhara Chemical Co., Ltd., YS resin PX1150N] 14.5 parts by mass (c) Softener [Liquid paraffin, a paraffin oil manufactured by Kaneda Co., Ltd., Hicol (registered trademark) ) M-352] 6.0 parts by mass (d) Light synthetic aluminum silicate (manufactured by Kyowa Chemical Industry Co., Ltd.) 3.0 parts by mass (e) Drug 20.62 parts by mass (total content)
<Breakdown of drugs>
Methyl salicylate 8.3 parts by mass l-menthol 8.3 parts by mass dl-camfur 4.0 parts by mass Nonylate vanillylamide 0.02 parts by mass (f) Anti-aging agent [BHT (di-tert-butylhydroxytoluene)] 0 ^{.35 parts by mass A laminate of hot-melt coated (150 g / m 2} ) on a 75 μ thick polyester film (liner) treated with silicone is knitted with a weft of polyester material on the adhesive side (grain: 180 g / m ² , thread). It is laminated to a thickness: 75 denier) to form a three-layer structure adhesive material, and then shape 2 (x = 40, d = 1.375x = 55, w = 1.25x = 50) shown in FIG. 5 (II). , H = 0.71 (x + 2w) = 100), and further, as shown in FIG. 2, a cut (slit) was provided only in the liner 4 portion to prepare the samples of Examples 1 and 2. The unit of dimension of the shape 2 is mm, and the same applies to the shapes shown below.

<Example 3>
The same original fabric as in Example 1 is used in the shape of shape 4 (x = 40, d = 1.5x = 60, w = 1.25x = 50, h = 1.0 (x + 2w) = 140) in FIG. 5 (IV). Was punched out to prepare a sample of Example 3.

<Example 4>
Acrylic adhesive (solution polymerization copolymer with monomer weight ratio of 2-ethylhexyl acrylate / acrylic acid = 96/4) Epoxy cross-linking agent (Terad X, manufactured by Mitsubishi Gas Chemicals, Inc.) with respect to 100 parts by mass of solid content ) 0.02 parts and 0.1 parts by mass of a metal chelate compound cross-linking agent (Narsem Aluminum, manufactured by Nippon Kagaku Sangyo Co., Ltd.) are added, and the organic solvent solution is dried to a coating amount of 48 g / m ² after drying. It was produced in the same manner as in Example 1 except that the adhesive was used.

<Example 5>
It was produced in the same manner as in Example 4 except that a weft knitted fabric ( ^{mesh: 140 g / m 2, thread thickness: 30 and 75 denier) of a polyester material was used.}

<Example 6, Example 7>
It was produced in the same manner as in Example 4 except that a weft knitted fabric of a polyester material (weight: ^{206 g / m 2, thread thickness: 99 denier) was used.}

<Example 8, Comparative Example 1>
It was produced in the same manner as in Example 4 except that a polyurethane mixed cotton fabric (weight: 160 g / m ^{2, different properties of vertical and horizontal threads) was used.} Example 8 and Comparative Example 1 were cut so that the directions with respect to the original fabric were perpendicular to each other.

<Comparative Examples 2 and 3>
The same original fabric as in Example 1 is punched into a rectangle of shape 1 (100 × 140) in FIG. 5 (I), and a cut is provided only in the liner portion in the substantially central portion in the long side direction parallel to the short side direction for comparison. The samples of Examples 2 and 3 were used.

<Comparative example 4>
The same original fabric as in Example 1 is used in the shape of shape 3 (x = 30, d = 3.0x = 90, w = 1.17x = 35, h = 1.4 (x + 2w) = 140) in FIG. 5 (III). Was punched out to prepare a sample of Comparative Example 4.

<Comparative example 5>
It was produced in the same manner as in Example 4 except that a weft knitted fabric made of a polyester material ( ^{mesh: 120 g / m 2, thread thickness: 50 denier) was used.}

<Comparative Example 6>
It was produced in the same manner as in Example 4 except that a polyester film (thickness; 38 μm) was used.

<Comparative Example 7, Comparative Example 8>
It was produced in the same manner as in Example 4 except that a warp knitted fabric made of a polyester material (with a basis weight of 227 g / m ^{2) was used.} Comparative Example 7 and Comparative Example 8 were cut so that the directions with respect to the original fabric were different at right angles.

<Comparative Example 9>
The same original fabric as in Example 1 is used in the shape of shape 5 (x = 25, d = 6.4x = 160, w = 1.4x = 35, h = 2.21 (x + 2w) = 210) in FIG. 5 (V). Was punched out to prepare a sample of Comparative Example 10.

<Evaluation method>
Each sample was attached to one knee in the morning, lived normally, and peeled off 8 hours after application. A total of 16 types of samples were sequentially subjected to one type per day. The state during that period was evaluated by the following items. For application, while sitting on a chair and bending the knee at a substantially right angle, a part of the separator section (liner piece) of each sample is peeled off, the adhesive surface is adhered to the skin, and then the other separator section (liner piece) is attached. ) Was peeled off, and the edges were glued as they were without pulling.

In Examples 1, Examples 3 to 6 and 8, Comparative Example 1 and Comparative Examples 4 to 8, the U-shaped inner circumference surrounds the patella, the U-shaped bottom is below the knee, and both arms are covered. It was attached so that it was located on the left and right sides of the knee. In Example 2, Example 7, and Comparative Example 9, the U-shaped inner circumference was attached so as to surround the patella, the U-shaped bottom was attached to the outside of the knee, and both arms were attached above and below the knee. In Comparative Example 2, the long side direction was set to the vertical direction so as to cover the patella, and in Comparative Example 3, the long side direction was set to the horizontal direction.

The following items were evaluated for the above 16 types of samples.
(1) Tension feeling when the knee is bent ○: The joint can be flexed without a tension feeling.
Δ: The tape is stretched, but the joint can be flexed.
X: The joint cannot be flexed because the tape is stretched.

(2) Knee support during application ◎: By pressing and supporting the joints, you can feel a firm support.
◯: A feeling of support is felt by pressing and supporting the joint.
Δ: A feeling of support is slightly felt by pressing and supporting the joint.
×: I do not feel a sense of support.

(3) Anti-inflammatory analgesic effect by drugs ○: Anti-inflammatory analgesic effect ×: No anti-inflammatory analgesic effect

(4) Easy to paste ○: Easy to paste △: Slightly difficult to paste ×: Difficult to paste

(5) Friction with clothes ○: No problem
△: There is some friction, but there is no problem
×: There is a problem with rubbing

(6) Difficult to peel off ○: Difficult to peel off △: Neither can be said ×: Easy to peel off

<Measurement method>
-Thickness: The thickness (mm) of the laminate of the support and the adhesive was measured using a dial thickness gauge. The average value of the three points was used as the measured value of each thickness.

-Stiffness and softness; according to the cantilever test JIS L 1096. The test piece of each patch was cut into strips having a width of 25 mm and a length of 150 mm in the original fabric length (MD) direction of the support. Place the short side of the sample on a smooth-surfaced horizontal table with a 45 ° slope aligned with the scale baseline, and gently slide the test piece toward the slope by an appropriate method within 20 seconds. When it fell down, the position of the edge on the horizontal platform side was read from the scale. The stiffness was indicated by the length (mm) of movement of the test piece, and the average value of the three pieces was taken as the measured value of the stiffness. All measurements were performed with the support surface of each patch facing down.

-10% tensile load, 50% tensile load; A tensile test was conducted according to JIS K 7113, and the tensile load was measured. As the test piece of each affixing material, a strip having a width of 25 mm and a length of 100 mm was cut in the longitudinal direction (MD) of the original fabric of the support and the vertical (CD) direction thereof. Cloth adhesive tape <LS> No. on both ends so that the distance between the chucks is 50 mm. 123 (manufactured by Nichiban Co., Ltd.) was attached to prepare a test piece for measuring tensile strength, and the test piece was attached to the crosshead of a Tencilon type tensile tester at the above-mentioned 50 mm grip interval. The upper crosshead was raised at a speed of 300 mm / min and the test piece was pulled. Based on the original test piece with a tensile length, the load when reaching 10% elongation was defined as 10% tensile load, and the load when reaching 50% elongation was defined as 50% tensile load. The unit of tensile load was expressed in Newton (N) / 25 mm. Three test pieces were cut in each of the MD and CD directions of each patch, and the above measurement was performed on all three pieces. The average value of the three sheets was used as the measured value of each tensile load. The measurement conditions are summarized below.

<Test conditions>
Testing machine: Tensilon type tensile testing machine Specimen: Width 25 mm, length 100 mm
Grab interval: 50 mm
Crosshead moving speed (tensile speed): 300 mm / min
Number of repeated tests: n = 3
Measurement atmosphere: 23 ° C, 50% RH

When Examples 1 to 8 and Comparative Examples 1 to 9 were tested under the above test conditions, the results shown in Tables 1 and 2 were obtained. In Tables 1 and 2, the pressure-sensitive adhesive is a plaster, the acrylic type containing the plaster is the pressure-sensitive adhesive described in Example 4, and the SIS type is the pressure-sensitive adhesive described in Examples 1 and 2. Further, in Tables 1 and 2, in the MD-vertical direction, the support original length (MD) direction is the vertical direction of the U-shape of the sticking material (however, Comparative Example 3 is the long side direction of the rectangle). , MD-horizontal means that the MD direction is the lateral direction of the U-shape of the sticking material (however, Comparative Example 2 is the short side direction of the rectangle).

As a result of the above evaluation test, in Examples 1, 3 to 6, 8, (1) a feeling of tension when the knee is bent, (2) a feeling of support of the knee during application, (4) ease of application, (5). ) It was good in both friction with clothes and (6) resistance to peeling. In Example 7, the evaluations (1), (5), and (6) were not good, but there was no problem, and the other evaluations (2) and (4) were good. In Example 2, since the method of sticking was lateral to the vertical direction of the knee, there was some friction with the clothes, but other evaluations (1), (2), (4), and (6) were performed. It was good.

On the other hand, in Comparative Examples 1 to 9, none of the evaluations (1), (2), (4) to (6) was satisfied, and in Comparative Examples 1 to 3, 6 to 8, It is easy to peel off when the knee is bent and stretched. In Comparative Example 5, since there is no stiffness, when it is turned over, it curls up and easily sticks to clothes and peels off. Further, Comparative Example 4 and Comparative Example 9 had a problem that they were easily peeled off for the reasons described in Table 2.

1 Joint sticker 2 Support 3 Adhesive 4 Liner 4a, 4b, 4c Liner piece 5 Slit 6 Grip 10 Recess 10a Opening 10b Bottom 11 Arm 12 Connecting 13a Concave arc 13b Concave 14 Outer side

Claims (7)

It is a joint attachment material made by laminating a support and an adhesive.
It is formed in a U shape consisting of a pair of arms facing each other with a concave portion that opens outward and a connecting portion connecting the base ends of both arms.
When the width of the inner peripheral portion of the recess is x, the depth of the inner circumference of the recess is d, the width of the arm is w, and the vertical width of the outer circumference including the recess and the connecting portion is h.
x = 40 ± 20 (mm),
d = 0.7x to 1.5x (mm),
w = 25-2x (mm),
h = d + 25 to 1.3 (x + 2w) (mm),
The support has elasticity in at least one of two vertical and horizontal directions so as to have elasticity in the support direction which is the bending direction of the joint portion at the time of attachment.
The 10% tensile load in the direction of elasticity is in the range of 1.0 N / 25 mm or less, the 50% tensile load is in the range of 15 N / 25 mm or less, and the rigidity of the laminate of the support and the adhesive is at least 11 mm. That's it,
A joint material that is characterized by this. In the joint attachment material according to claim 1,
The tip corner portion of the opening side of the both arm portions is formed in a convex arc shape, is formed on the gently curved outer edges recessed inwardly connecting the base end side and the connecting portion of both arms A joint attachment material characterized by being In the joint attachment material according to claim 1 or 2,
A joint portion attaching material, wherein the outer side of the connecting portion facing the concave portion is formed in a concave arc shape. In the joint attachment material according to any one of claims 1 to 3,
The above adhesives include methyl salicylate, l-menthol, camphor, vanillylamide nonylate , salicylic acid, glycol salicylate, acetylsalicylic acid, peppermint oil, timole, nicotinic acid benzyl ester, peppermint extract, capsaicin, fervinac, butylflufenamic acid, piroxicam, indomethacin. , Ketoprofen, planoprofen, feprazone, flurbiprofen, loxoprofen, amphenac sodium, oxaprodin, emorphazone, thiaprofen, fenbufen, fentiazac, diclofenac sodium, diflunisal, ibprofen piconol, bendazac, sprofene, buprenorfin hydrochloride, pentazocin , A joint attachment material comprising one or more of the medicinal properties of butorphanol tartrate. In the joint attachment material according to any one of claims 1 to 4,
A joint attachment material, wherein the total thickness of the laminate of the support and the adhesive is in the range of 0.55 to 0.75 mm. In the joint attachment material according to any one of claims 1 to 5,
Further provided with a liner that can be peeled off from the pressure-sensitive adhesive, the liner is located at a position deviated from the center at the bottom of the recess and outside the connecting portion that connects the base end side of both arms and the connecting portion. A joint attachment material characterized in that it is formed into three parts by a pair of slits connecting the positions of the sides. In the joint attachment material according to claim 6,
A joint attachment material characterized in that the slits are formed in a corrugated curve shape.

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