JPH10234865A - Adherent sheet for low frequency medical treatment and low frequency medical treatment apparatus using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the medical treatment effect and the handling property by a method wherein an adherent layer which fixes the electrode of a low frequency medical treatment apparatus to a body surface, is formed by making it contain or load at least one of a fomentation chemical, a percutaneously absorbed medicine, a magnet or a far infrared radiation body. SOLUTION: This adherent sheet 1 for low frequency medical treatment is constituted of an adherent layer 2 comprising a single adhesive. A mixture of an acrylic adhesive on the market, a water absorbent made of a non-ion water soluble cellulose ether, and salty water as an electrolyte, is prepared, and the mixture is jetted on a release paper, and the adherent layer 2 having numerous very fine holes is formed. At the center, a lidocaine hydrochloride jelly is applied into a circular shape, and a lidocaine hydrochloride loading layer 3 is formed. Until a usage, the adherent layer 2 is prevented from deteriorating by affixing a release paper. The lidocaine hydrochloride loading layer 3 is made to face a skin, and the electrode is fixed to the skin by placing an electrode holder from the top. By this method, the medical treatment property and the handling property can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention provides not only a low-frequency therapeutic effect but also an excellent compressing effect, a pharmacological effect, a magnetic therapeutic effect, a heating effect by far-infrared rays, etc. And a low-frequency treatment device using the same.

[0002]

2. Description of the Related Art The use of electrical stimulation or sedation of nerves and muscles to induce motor palsy and neuralgia in patients undergoing electrical palsy or central nervous system by applying electric current to a central or peripheral part of the nervous system. It is said that the low-frequency treatment method using the high-frequency current has an excellent effect on the hypnotic action, the motor paralysis, and the nerve conduction by energizing the head.

[0003] This low-frequency treatment method includes a low-frequency generator for generating a low-frequency quadrature pulse wave current (referred to by the proponent as Leduc current) and a device for transmitting the current to the human body. A low frequency treatment device with a pair of electrodes is used. This electrode is fixed to the body surface with the electrode holder together with the adhesive tape over the electrode holder holding it, or fixed to the body surface with the adhesive tape sandwiched between the electrode holder and the electrode, For example, as described in Japanese Patent Application Laid-Open No. 6-339531, it is attached to a human body via an adhesive gel attached to an application surface side of an electrode.

[0004]

However, the conventional adhesive tape used for low-frequency treatment is only for sticking the electrode to the skin, and the adhesive gel is interposed between the electrode and the skin. Some have only provided conductivity to facilitate transmission of low frequency current to the skin.

For this reason, in the conventional low frequency treatment,
In particular, the therapeutic effects of other therapies cannot be obtained at the same time, and the synergistic therapeutic effects of the combined use of other therapies cannot be obtained.

Further, in the conventional device, since the electrodes are fixed to the adhesive tape, the electrodes cannot be removed, so that the electrodes cannot be easily used and the handling is poor.

The present invention has been completed in order to solve the above-mentioned technical problems. The adhesive layer laminated for fixing the electrode of the low-frequency treatment device to the body surface includes a poultice,
By containing or carrying at least one of a transdermally absorbable drug, a magnet and a far-infrared radiator, not only a low-frequency therapeutic effect, but also a compressive effect by a compress, a medicinal effect by a transdermally absorbable drug, a magnet At least one of a magnetic therapeutic effect according to the present invention or a thermal effect due to the far-infrared radiator, so that, in addition to the low-frequency therapeutic effect, at least one of the compressive effect, the medicinal effect, the magnetic therapeutic effect or the thermal effect. Another object of the present invention is to provide a low-frequency pressure-sensitive adhesive sheet having a low-frequency therapeutic effect synergistically enhancing the therapeutic effect, and having significantly improved handling properties, and a low-frequency therapeutic device using the same. .

[0008]

According to the present invention, there is provided a pressure-sensitive adhesive sheet for low frequency treatment according to the present invention, wherein at least a peripheral portion or an edge portion is provided for fixing an electrode of a low frequency treatment device to a body surface. Is characterized in that at least one of a poultice, a percutaneously absorbable drug, a magnet and a far-infrared radiator is contained or carried in the pressure-sensitive adhesive layer laminated.

[0009] Thereby, at the time of low-frequency treatment, a compressing effect, a medicinal effect by percutaneous administration, a magnetic treatment effect by a magnet, and a warming effect by far-infrared rays can be obtained simultaneously with the low-frequency treatment effect. Higher therapeutic effects can be obtained.

Hereinafter, the present invention will be described in more detail. The structure of the pressure-sensitive adhesive layer of the present invention includes a single-layer structure composed of a pressure-sensitive adhesive, a two-layer structure including a skin pressure-sensitive adhesive layer that adheres to the body surface and an electrode pressure-sensitive adhesive layer that adheres to an electrode, a base material, and a skin laminated on one surface of the substrate. A three-layer structure comprising a two-layer structure of an adhesive layer, a base material, a skin adhesive layer laminated on one surface of the base material and adhered to the body surface, and an electrode adhesive layer laminated on the opposite surface and adhered to the electrode. And the like.

Of course, a skin adhesive layer, a poultice between the skin adhesive layer and the substrate, or between the substrate or the substrate and the electrode adhesive layer,
It is possible to form an adhesive layer having a multilayer structure of four or more layers in which one or more carrier layers containing or carrying at least one of a transdermally absorbable drug, a magnet and a far-infrared radiator are arranged. However, considering economics, it is preferable to have three or less layers.

The present invention has a single-layer adhesive layer, a two-layer adhesive layer of a skin adhesive and an electrode adhesive layer, or a three-layer adhesive layer of a substrate, a skin adhesive and an electrode adhesive layer. Examples of the method of using the pressure-sensitive adhesive sheet include a method of covering an electrode and an electrode holder holding the electrode over the electrode and fixing the peripheral edge or edge to the body surface, sandwiching the electrode between the electrode and the electrode holder, There is a method of fixing the part or the edge to the body surface, a method of sandwiching the part or the edge between the electrode and the body surface, and adhering the electrode or the body surface. As a method of using the pressure-sensitive adhesive sheet of the present invention having a two-layered pressure-sensitive adhesive layer of a base material and a skin pressure-sensitive adhesive layer, an electrode and an electrode holder for holding the electrode are placed over the peripheral edge or edge to cover the body surface. And a method of sandwiching the electrode between an electrode and an electrode holder and fixing the peripheral edge or the edge to the body surface.

The adhesive used for the adhesive layer includes:
Although it is not particularly limited as long as it is generally used as an adhesive, in consideration of the fact that the skin adhesive layer in a single-layer structure or a laminated adhesive layer is adhered to the body surface. It is preferable to select one that has no skin irritation. In addition, it is preferable to use a non-transferable material that does not remain on the body surface or a material that does not cause damage when peeled, and a material that has flexibility so that it can be easily applied to the body surface.

It is preferable that the adhesive layer and the base material have an extensibility or an elasticity so as to easily follow the movement of the body surface, and that they have no unpleasant odor so as not to cause discomfort during use. It is preferred that

In the present invention, it is sufficient that the adhesive layer contains or carries at least one of a poultice, a percutaneously absorbable drug, a magnet and a far-infrared radiator.
Two or more of these may be contained or carried in the adhesive layer. When two or more of these are carried on the adhesive layer, not only the effects obtained when each is carried on the adhesive layer are obtained, but also an excellent therapeutic effect is obtained by synergizing these effects. Can be expressed.

Here, the expression that at least one of a poultice, a percutaneously absorbable drug, a magnet, and a far-infrared radiator is contained means that the adhesive forming the adhesive layer contains the poultice, the transdermally absorbable drug, and the like. , At least one of a magnet or a far-infrared radiator
When the adhesive layer has a multilayer structure of two or more layers, at least one of them is used.
This means that the layer contains at least one of a poultice, a transdermal drug, a magnet or a far-infrared radiator.

[0017] Further, that at least one of a poultice, a transdermally absorbable drug, a magnet and a far-infrared radiator is carried means that the adhesive forming the adhesive layer comprises a poultice, a transdermally absorbable drug, In addition to impregnating, dispersing, or dissolving at least one of the magnet and the far-infrared radiator, when the adhesive layer has a multi-layer structure, it also includes sandwiching between the layers. It is.

That is, a compress, a transdermal drug,
As a method of supporting at least one of the magnet or the far-infrared radiator, a method of attaching to the exposed surface of the adhesive layer by application or printing using a spray, a brush, a roller, or the like, an exposed surface of the adhesive layer by immersion A method of impregnating the adhesive layer, forming an adhesive layer in a plurality of layers, forming a layer comprising at least one of a poultice, a transdermal absorbent, a magnet or a far-infrared radiator between the layers, And a method in which the adhesive layer has a multilayer structure of three or more layers and an intermediate layer is impregnated by immersion.

In the present invention, the poultice used is 2% which is generally used as a poultice.
Boric acid water, physiological saline, bitumen water, alcohol water, linseed oil lime water, liver oil, olive oil, rivanol water, potassium permanganate (diluted 5000-fold) solution, mentha water, creosote, mustard, and the like are used. It is not essential to the present invention that these contain water, and the present invention also includes solid forms in which these active ingredients are formed into fine powders or granules.

The percutaneously absorbable drug used in the present invention generally means that it is absorbed into the body through the skin to obtain a local therapeutic effect at and near the application site, or circulates throughout the body such as blood and lymph. It is a drug used in a therapeutic system that obtains a systemic therapeutic effect by supplying it to the whole body in a body fluid, ie, a transdermal absorption system.

The transdermally absorbable drug is not particularly limited as long as it is generally a transdermally absorbable drug.
Specifically, for example, skin irritants, analgesics and anti-inflammatory agents, central nervous system active agents (sleep sedatives, antiepileptics, psychiatric agents, etc.), diuretics, antihypertensives, coronary vasodilators, antitussives and expectorants, Examples thereof include antihistamines, arrhythmias, inotropic agents, corticosteroids, and local anesthetics. Of course, this transdermally absorbable drug may be used alone, or two or more transdermally absorbable drugs may be used depending on the prescription.

The magnet used in the present invention is not particularly limited as long as a so-called therapeutic effect can be obtained by forming a magnetic field around the magnet and applying it to the body surface. Examples include a powder compact.

The far-infrared radiator is, for example, excited by being heated by a body temperature or the like to have a wavelength of 4 to 16 μm.
Is a substance that emits far-infrared rays. Moisture in the body that absorbs the far-infrared energy excites and generates heat, and the heat generated by the heat produces a warming effect.

The far-infrared radiator used in the present invention includes:
It is preferable to emit far infrared rays having a wavelength of about 4 to 16 μm depending on the human body temperature. For example, Fe ₂ O, FeO, Fe ₂ O ₃ , Si
_{O 2, Al 2 O 3,} ZrO, ZrO 2, BeO, V 2 O 3, V 2 O 5, Y 2 O 3, Co
_{O, CuO, Cu 2 O,} NiO, Ni 2 O 3, MnO, MnO 2, MgO, Ti
An inorganic oxide such as O ₂ , TiO ₂ , ZnO ₂ , ThO ₂ , Na ₂ O, K ₂ O, CaO and BaO may be combined so as to be designed to generate far-infrared rays having the above-mentioned wavelength.

Specifically, 2MgO.2Al ₂ O ₃ .5SiO ₂ .Fe ₂ O
Composite composed mainly of ₃ , Li ₂ O ・ CuO ・ Al ₂ O ₃・ 4SiO ₂
And a composite mainly composed of Al ₂ O ₃ .TiO ₂ . Here, the term “main component” means that, in addition to the case where the composition is composed only of the chemical composition, the case where other components are included in these components may be used.

In these poultices, percutaneously absorbable drugs, magnets or far-infrared radiators, the minimum amount is the respective effective amount, and the maximum amount is within a safe range from a medical point of view. However, it is desirable to consider economics within this range. In addition, since these compresses, transdermally absorbable drugs, magnets or far-infrared radiators do not inherently have an adhesive property, it is necessary to consider that if they are contained in the adhesive layer, the adhesive strength of the adhesive layer is reduced. . Therefore, taking all of these into account, the amount of use of these compresses, transdermally absorbable drugs, magnets or far-infrared radiators, whether plain or
Regardless of the composite or mixture, the total amount is preferably 0.01 to 25 parts by weight, particularly preferably 0.5 to 15 parts by weight, based on 100 parts by weight of the adhesive (solid content) of the adhesive layer. .

The compounding ratio of the poultice, the transdermally absorbable drug, the magnet or the far-infrared radiator, or the mixture or composite of two or more of these to the pressure-sensitive adhesive of the pressure-sensitive adhesive layer is as follows:
With respect to 100 parts by weight of the pressure-sensitive adhesive (solid content) of the pressure-sensitive adhesive layer, 0.1% by weight.
When the amount is less than 01 parts by weight, there is no point in mixing a poultice and the like, and the desired effect cannot be obtained, which is not preferable.
If the amount is more than 25 parts by weight, the effect is limited, and there is no point in blending, and it is economically disadvantageous and the adhesive strength of the adhesive layer may be significantly reduced, which is not preferable.

Further, these poultices, transdermally absorbable drugs, magnets or far-infrared radiators, or mixtures or composites of two or more of them can be used in the adhesive layer in order to make the effect more remarkable. It is preferable to carry it on the surface portion on the body surface side.

In the case where a poultice, a percutaneously absorbable drug, a magnet or a far-infrared radiator, or a mixture or composite of two or more thereof is carried on the surface of the adhesive layer on the body surface side, these It must be taken into account that the adhesive strength of the adhesive layer to the body surface is reduced by the poultice and the like. Therefore,
In this case, where to place the poultice or the like on the surface of the adhesive layer can be freely selected in consideration of the adhesive strength of the adhesive layer, the area of the adhesive layer, and the like.

Here, these compresses, transdermally absorbable drugs,
The magnet or the far-infrared radiator, or a mixture or composite of two or more of them, is arranged in a line or band shape, and is arranged in a stripe or grid pattern over its entire surface, or in a dot or island shape to form a matrix. Arranging them in a shape is preferable because the adhesive strength of the adhesive layer can be averaged over the entire surface.

When the pressure-sensitive adhesive layer is entirely adhered to the body surface, these compresses, transdermally absorbable drugs, magnets or far-infrared radiators, or a mixture or a mixture of two or more thereof are used. When the composite is placed at the center of the surface, the peripheral edge of the adhesive layer is securely adhered to the body surface by the adhesive, and the peripheral edge of the adhesive layer is turned up during use, and the entire adhesive layer is eventually peeled off from the body surface This is preferable because it is possible to prevent that
Of course, in this case, the adhesive layer may be arranged at the center of the adhesive layer without any gap, or may be arranged in a stripe, lattice, or matrix in the center. Distributing these poultices, transdermally absorbable drugs, magnets or far-infrared radiators, or mixtures or composites of two or more of them in the center at the center of the surface, is not possible with adhesive. The layer is even more preferred because it can be adhered to the body surface even in the center.

On the other hand, as a method of using the adhesive layer,
When the method of covering the electrode or the electrode holder with the electrode holder and fixing the peripheral edge or the edge to the body surface is adopted, a poultice, a percutaneously absorbable drug, a magnet or far-infrared ray is fixed within a certain range in the center. Arranging the radiator or a mixture or composite of two or more of them is not preferable from the viewpoint of economy. Therefore, in the case of this method of use, a poultice, a percutaneously absorbable drug, a magnet or a far-infrared radiator, or a mixture or a composite of two or more of them is provided in the middle part between the central part and the peripheral part. Is preferably arranged.

When a poultice, a transdermal drug, a magnet or a far-infrared radiator, or a mixture or composite of two or more of them is carried on the surface on the electrode side, the arrangement of the electrode and the The same can be said for securing the adhesive strength with the adhesive layer.Also, the adhesive layer is divided into a plurality of layers, and a poultice, a transdermal drug,
When a magnet or a far-infrared radiator, or a mixture or a composite of two or more of them is sandwiched, the same can be said for these arrangements in order to secure the adhesion between the layers.

Next, the pressure-sensitive adhesive layer of the present invention is not particularly limited as long as it is laminated at least on the peripheral edge or the edge in order to fix the electrode of the low-frequency therapeutic device to the body surface. As described above, the pressure-sensitive adhesive may be a single layer made of the pressure-sensitive adhesive, or may be a layer in which the pressure-sensitive adhesive is laminated on one or both sides of the base material.

The pressure-sensitive adhesive layer is not particularly limited, but preferably has water absorption for the following reasons.

That is, when the adhesive layer has water absorbency,
As a result of absorbing body fluids such as sweat secreted from the living body and preventing the accumulation of moisture between the body surface and the adhesive layer or between the adhesive layer and the electrode, the adhesive strength of the adhesive layer due to moisture is reduced. Thus, it is possible to prevent the adhesive layer from peeling off from the body surface or the electrode for a long time.

As a method for imparting water absorbency to the adhesive layer, a method of making the adhesive layer porous or using an organic water absorbing agent, a method using an inorganic water absorbing agent, an organic water absorbing agent and an inorganic water absorbing agent are used. And a method in which a water absorbing agent is used in combination. Among these methods, the most effective is a method in which a method of changing the structure of the adhesive layer into a structure having water absorbency and a method of using a water absorbing agent are used in combination.

It is desirable that the adhesive layer be a porous layer having a myriad of fine pores, since bodily fluids will be absorbed by the fine pores.

As a method for forming the porous adhesive layer made of this adhesive, a method of mechanically forming holes in the adhesive layer formed in a sheet shape by needling, punching, or the like, or a method using a foaming agent. Foaming method, a method of extracting a pre-mixed specific component, a method of forming a porous layer by dropping a fibrous pressure-sensitive adhesive on a release sheet from a nozzle that moves while rotating in a loop, or forming a pressure-sensitive adhesive. After spraying onto a release sheet to form a porous layer, this may be transferred to an electrode.

In the present invention, when the adhesive layer has a two-layer structure of a skin adhesive layer and an electrode adhesive layer, it is preferable that at least the skin adhesive layer in contact with the skin has many fine pores. More preferably, both the layer and the electrode adhesive layer have a large number of fine holes.

In the case where only the skin adhesive layer has a large number of fine pores, a method other than forming the skin adhesive layer on a porous sheet as described above and laminating it with the electrode adhesive layer may be used. A fibrous adhesive is dropped onto the electrode adhesive layer from a nozzle that moves while rotating in a shape, or a liquid adhesive is sprayed on the electrode adhesive layer at high pressure, and the dispersion in the air at the time of injection is used. By forming a large number of fine holes inside the adhesive layer, an adhesive layer having a laminated structure can be formed.

In the case of an adhesive layer having a two-layer structure or a three-layer structure in which an adhesive is impregnated or adhered on one or both sides of a base material, at least the skin adhesive layer may have a large number of fine pores. It is more preferable that the skin adhesive layer and the substrate have a large number of fine pores. In the case of a three-layer structure, the electrode adhesive layer preferably has a large number of fine holes.

As a substrate having such a water-absorbing structure, a porous sheet formed in the same manner as the pressure-sensitive adhesive layer may be used. In addition, a woven fabric having a large number of fine pores may be used. A cloth such as a cloth, a knitted cloth, a felt, and a nonwoven cloth may be used. Among these, from the viewpoint of homogeneity, it is preferable to use a nonwoven fabric in which pores having an averaged size as a whole are dispersed on average.

The water-absorbing agent is not particularly limited as long as it can be dissolved or dispersed in water or various aqueous solutions. For example, starch-based water-absorbing agents such as dextrin, pregelatinized starch, and starch for processing, sodium alginate, isoprene- Polysaccharide water absorbing agents such as maleic anhydride copolymer, carrageenan and agar, cellulose derivative water absorbing agents such as carboxy-methyl cellulose (CMC), ethyl acetate and hydroxypropyl cellulose, acrylic resin water absorbing agents, polyvinyl alcohol water absorbing agents And water-dispersed emulsion-based water-absorbing agents such as urea resin-based water-absorbing agents, polyvinyl acetate emulsions and polybutadiene-based emulsions, and sodium acrylate.

By the way, the adhesive layer of the present invention is naturally contaminated by secretions such as sweat when used, and it is hygienic to use such a contaminated adhesive layer for other patients. Not that. Therefore, it is most preferable to dispose the adhesive layer of the present invention when treating an unspecified number of patients. However, when an individual uses a low-frequency treatment device, the adhesive layer is preferably used. It is preferable that the stains can be removed and used repeatedly to some extent.

In any case, when the adhesive layer of the present invention is adhered to an electrode, it is preferable that the adhesive layer can be peelably attached to the electrode.

In order to make the adhesive surface of the adhesive layer adhered to the electrode (adhesive surface on the electrode side) releasable, one or both of the adhesive surface on the electrode side of the adhesive layer and the surface of the electrode must have an adhesive force. Dispersing or dispersing the adhesive force reducing agent to be reduced, or forming one or both of the adhesive surface on the electrode side of the adhesive layer and the electrode in the form of irregularities.

[0048] As this adhesive force adjusting agent, non-adhesive
Preferably, a substance having a blooming property, for example, silicone, polyethylene wax, surfactant, paraffin and the like can be mentioned.

By the way, the adhesive force on the surface of this adhesive layer is:
When the application is repeated, foreign matter such as waste and dust from the human body adheres to the material, and the amount of the foreign matter decreases. Therefore, in the present invention, in order to release the user from such hesitation, it is preferable to use an adhesive which can be easily washed by washing with water or the like, and which can recover the adhesive strength if dried after washing.

When the pressure-sensitive adhesive layer is composed of a base material and a pressure-sensitive adhesive layer impregnated or adhered to one or both surfaces thereof, the base material may be a foamed or non-foamed sheet or cloth.
The material is not particularly limited, but it is preferable that the material has durability to withstand repeated use to some extent. Specifically, a cloth or paper, such as a nonwoven fabric, a woven fabric, or a knitted fabric, of a natural or synthetic rubber sheet, a synthetic resin sheet, a natural fiber, a synthetic fiber, or a blend thereof can be used.

Specific examples of the synthetic resin include polyethylene, polypropylene, polyamide, polyester, polyvinyl chloride, polyvinylidene chloride, polyurethane, polystyrene, saponified ethylene-vinyl acetate copolymer and ethylene-vinyl acetate copolymer. And the like.

The base material of the pressure-sensitive adhesive layer preferably has extensibility or flexibility in order to increase conformability to the body surface, and expands or contracts in order to increase followability to fluctuations in the body surface. It is preferable to have the property. In addition, the base material of the adhesive layer preferably has a large number of fine pores in order to enhance water absorption, and when applied to human skin, allergic inflammation may occur on human skin. It is preferable to have no skin irritation to prevent the occurrence of skin irritation. From these viewpoints, it is preferable to use polyurethane or the like among the synthetic resins.

The film-like or sheet-like pressure-sensitive adhesive layer consisting of the pressure-sensitive adhesive alone has rubber-like elasticity, which is preferable in terms of enhancing the conformability and conformability to the application surface. It is preferably non-skin-irritating to prevent occurrence.

The pressure-sensitive adhesive used for the pressure-sensitive adhesive layer exhibits excellent tackiness (tackiness) at room temperature and in a solvent-free state, and has excellent adhesiveness to the body surface and electrodes by simply pressing lightly with a finger. In addition to exhibiting holding power, it has sufficient cohesive force and elasticity, so it can be handled with a fingertip, and peels off from a smooth adherend without seeing adhesive residue What can do is desirable.

The adhesive used in the present invention includes:
The following are mentioned. The pressure-sensitive adhesive using the diene-based elastic body is called a rubber-based pressure-sensitive adhesive, and a mixture of a rubber component and a tackifier (tackifier) in a ratio of 1: 0.5 to 2 is used.

As the rubber component, natural rubber (NR),
Isoprene rubber, styrene-butadiene rubber (SB
R), butyl rubber (BR), block copolymers such as styrene-isoprene-styrene (SIS) and styrene-butadiene-styrene (SBS), recycled rubber, and thermoplastic rubber are mainly used.

The pressure-sensitive adhesive using the ethylenic elastic body is an acrylic polymer, and is also called an acrylic pressure-sensitive adhesive. The acrylic polymer serving as the base of the acrylic pressure-sensitive adhesive generally exhibits tackiness by itself and does not require a tackifier.

The adhesive component has an alkyl group having 4 to 10 carbon atoms.
Are suitable, and Tg is -20 to-
It is as low as about 70 ° C. and is typically a C ₂ or more alkyl ester such as ethyl acrylate, butyl acrylate, octyl acrylate, 2-ethylhexyl acrylate, or n-butyl acrylate.

Although this adhesive component is used as a main component and is rich in adhesiveness, it lacks cohesiveness and requires an aggregated component. As the aggregating component, for example, C _{1 to} C ₂
Lower alkyl group acrylates (eg, methyl acrylate, ethyl acrylate, methyl methacrylate), methacrylic acid alkyl esters (eg, C ₂ -C ₈ alkyl methacrylate), and C ₁ -C ₃ vinyl esters (eg, vinyl acetate, propionic acid) Monomers that can be copolymerized and have a high Tg, such as vinyl), acrylonitrile, styrene, and vinyl monomers (such as vinylidene chloride) are used. This cohesive component not only enhances cohesiveness, but also sometimes helps to improve performance such as improvement in adhesiveness, water resistance, and transparency, and is used to bring out the specialty of the pressure-sensitive adhesive.

The modifying component generally has a functional group copolymerizable with the adhesive component and the aggregating component, and includes unsaturated carboxylic acids (such as acrylic acid, methacrylic acid, and maleic anhydride) and unsaturated carboxylic acid amides. And modified products (acrylamide, acrylamide derivatives, etc.), hydroxyl group-containing monomers, acrylonitrile, hydroxyethyl acrylate, and glycidyl acrylate. This modifying component is useful not only for performing crosslinking, but also for improving cohesion and improving adhesion, and also for increasing the reaction rate during polymerization. It is helpful.

Although the acrylic pressure-sensitive adhesive basically contains the above three components, it may be composed of one or two components depending on the case. Acrylic pressure-sensitive adhesives are composed of a single component and therefore have high transparency and excellent durability, and are mainly used as emulsion-type and solution-type pressure-sensitive adhesives.

As the ethylene-based elastic material, a vinyl ether-based elastic material may be used in addition to the acrylic polymer. The pressure-sensitive adhesive using the vinyl ether-based elastic material is called a vinyl-based pressure-sensitive adhesive and is composed of a C ₂ -C ₄ alkyl vinyl ether polymer. In vinyl-based adhesives, a high-molecular weight material and a low-molecular weight material are mixed to maintain the balance between tackiness, holding power, and tack.However, when other resins are used together to enhance tack or tackiness, is there.

A pressure-sensitive adhesive using a condensed elastic material is called a silicone-based pressure-sensitive adhesive. The silicone-based pressure-sensitive adhesive contains a polydimethylsiloxane rubber as a main component and a low-molecular-weight silicone resin containing dimethylsiloxane in the polydimethylsiloxane. Has been added. This silicone pressure sensitive adhesive can be used in a wide temperature range, and is excellent in both heat resistance and durability.

The tackifiers can be classified into tackifier resins, plasticizers, fats and oils, low molecular weight polymers, crosslinking agents, adhesion improvers, fillers and other compounding agents. These include known ones.

As these rubber-based adhesives, acrylic-based adhesives or silicone-based adhesives, those which can remove foreign substances such as dust adhering to the surface by washing with water and recover the adhesive strength again when dried are used. It is preferable to use an acrylic pressure-sensitive adhesive that has a remarkable property in which the adhesiveness is reduced particularly by washing with water and the adhesiveness is recovered when dried, and among the acrylic pressure-sensitive adhesives, those in which a polyacrylic acid gel is formed in a layered form Preferably, it is used.

The pressure-sensitive adhesive basically has a skeleton consisting of two components, a polymer elastic material that gives cohesion and a tackifier, and a pressure-adjusting agent, an adhesion improving agent, Stabilizers, coloring agents, fungicides, defoamers, thickeners, antioxidants and the like are added.

When the adhesive layer has a two-layer structure of a skin adhesive layer and an electrode adhesive layer, or a three-layer structure having a skin adhesive layer on one surface and an electrode adhesive layer on the other surface, As described above, to the adhesive of the electrode adhesive layer, while facilitating the peeling from the electrode, to further facilitate water washing, non-adhesive to the adhesive, preferably a substance having a blooming property, for example, silicone, polyethylene Wax, surfactant, paraffin and the like may be included.

By adding such a compound such as silicone or polyethylene wax, or by treating the surface of the adhesive surface, it is possible to produce a material that can be peeled off even if the adhesive layers adhere to each other. It can be stored in a state where the layers are folded and adhered to each other, or multiple layers of adhesive layers can be stored, and even if the adhesive layer is accidentally folded and adhered during application, it can be easily peeled off and spread Can be.

In the pressure-sensitive adhesive sheet for low frequency treatment according to the present invention, the pressure-sensitive adhesive layer is removably attached to the electrode,
Alternatively, the ear portion extends to at least one portion of the peripheral portion of the adhesive layer, and the electrode is detachably connected through the ear portion, so that the adhesive layer can be removed from the electrode, so that electricity can be supplied. In addition, the adhesive layer can easily provide a compressing effect, a pharmacological effect, a magnetic therapeutic effect, and a warming effect by far-infrared rays, and also improves the handleability and usability.

In this case, to prevent the adhesive layer from adhering to the undergarment and contaminating the undergarment, or to prevent the poultice, the percutaneously absorbable drug, the magnet or the far infrared radiator from adhering to the undergarment. Preferably, the surface of the pressure-sensitive adhesive layer is covered with a protective sheet.

That is, in the present invention, it is desirable that the pressure-sensitive adhesive sheet for low-frequency treatment described above and a protective sheet for covering the surface of the pressure-sensitive adhesive layer in the pressure-sensitive adhesive sheet for low-frequency treatment are used.

In order to achieve the above object, the low-frequency treatment device according to the present invention comprises the above-mentioned pressure-sensitive adhesive sheet for low-frequency treatment. At least one of a compressing effect by a poultice, a medicinal effect by a percutaneously absorbable drug, a magnetic therapeutic effect by a magnet, and a thermal effect by a far-infrared radiator. Alternatively, at least one of the warming effect and the low-frequency treatment effect can be synergized to further enhance the treatment effect.

[0073]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An adhesive sheet for a low-frequency therapeutic device according to an embodiment of the present invention will be specifically described with reference to the drawings.
It is as follows.

Example 1 A pressure-sensitive adhesive sheet 1 for a low-frequency therapeutic device according to an example of the present invention shown in the perspective view of FIG.
The adhesive layer 2 was composed of 86.5% by weight of a commercially available acrylic pressure-sensitive adhesive and 3.5% by weight of a water-absorbing agent composed of nonionic water-soluble cellulose ether (Metroze 60SH manufactured by Shin-Etsu Chemical Co., Ltd.). And salt water (2%
After 10% by weight of sodium chloride aqueous solution was mixed and thoroughly mixed, the mixture was ejected from a nozzle toward a release paper at high pressure, and a number of fine pores were formed by dispersion in air (entrapped air). In this state, a single pressure-sensitive adhesive layer 2 is formed on the release paper and dried until it has an appropriate viscosity.

Next, lidocaine hydrochloride jelly is applied in a circular shape to the central portion of the exposed surface of the adhesive layer 2, that is, the central portion of the adhesive layer 2 opposite to the release paper side, and the lidocaine hydrochloride supporting layer 3 (solidified adhesive) is applied. (The external addition amount of lidocaine hydrochloride per minute is 2% by weight).

It is preferable that both surfaces of the adhesive layer 2 are protected from contamination and deterioration by, for example, attaching a release paper before use. Since these release papers are released before use, FIG.
Is omitted here.

The adhesive sheet 1 for a low frequency treatment device is shown in FIG.
As shown in (1), the surface coated with lidocaine hydrochloride jelly (skin-adhering surface) faces the skin side, and is placed over the electrode holder 5 holding the electrode 4, and the peripheral portion is adhered to the skin. The electrode 4 is fixed to the body surface, and as shown in FIG. 3, an electrode holder 5 and a small hole 7 for inserting a male part 6 of a snap fastener having conductivity provided between the electrode holder 5 and the electrode holder 5 are formed. The electrode 4 is fixed to the body surface by sandwiching the electrode 4 between the electrode holder 5 and the electrode 4 and adhering to the opposing surfaces of the electrode holder 5 and the electrode 4 and attaching the peripheral portion to the skin. As shown in FIG. 4, the electrode 4 is inserted between the electrode 4 held by the electrode holder 5 and the skin, and is entirely adhered to the body surface, and the electrode 4 is adhered to the opposite central portion. The electrode 4 was fixed on the body surface To.

In FIGS. 2 to 4, reference numeral 8 denotes a lead wire for connecting the electrode 4 to a low-frequency generator (not shown).

As shown in FIG. 1, both sides of the adhesive sheet 1 for a low-frequency treatment device have a large number of grooves 9 intersecting in an oblique lattice pattern.
Is formed on the uneven surface by forming
The adhesive sheet 1 is configured to be easily peeled off from the body surface.

Example 2 A pressure-sensitive adhesive sheet 1 for a low-frequency therapeutic device according to another embodiment of the present invention, shown in the perspective view of FIG. 5, is formed by punching a large number of the adhesive layers 2 formed in the same manner as the adhesive layer 2 of the previous example. The small holes 10 are formed at appropriate intervals.

The other constitutions, that is, the method of forming the adhesive layer 2 and the lidocaine hydrochloride support layer 3 are the same as those in the first embodiment, and therefore are omitted to avoid redundant description.

Embodiment 3 An adhesive sheet 1 for a low-frequency therapeutic device according to still another embodiment of the present invention shown in the perspective view of FIG. 6 comprises a base material 11 and a skin adhesive layer 12, and this base material 11 is made of polyethylene. Non-woven fabric (basis weight 4
0 g / m ² ) and is formed in a circular shape having a small hole 7 in the center. The skin adhesive layer 12 is composed of 95% by weight of a commercially available acrylic adhesive and a water-absorbing agent composed of a nonionic water-soluble cellulose ether (Metroze 6 manufactured by Shin-Etsu Chemical Co., Ltd.).
0SH) 5% by weight, and dissolved or dispersed in a solvent (a mixed solvent of ethyl acetate and ethyl ether, weight ratio of 85 to 15) for dilution. It is formed in such a manner that it is applied as a single layer to the base material 11 in a state in which a number of fine holes are formed by dispersion in the inside (air entrainment), and dried. Thereafter, lidocaine hydrochloride jelly is applied to the exposed surface of the skin adhesive layer 12 in a donut shape to form a lidocaine hydrochloride support layer 13.

As shown in FIG. 3, for example, the adhesive sheet 1 for a low-frequency treatment device is sandwiched between an electrode holder 5 and an electrode 4, and the central portion thereof is attached to the surface of the electrode 4 facing the electrode holder 5. At the same time, the electrode 4 is fixed to the skin by sticking the peripheral portion to the skin.

In this case, between the electrode 5 and the body surface, a conductive gel is interposed between the electrode 5 and the body surface so as to correspond to the seven central small holes and the lidocaine jelly coating location, as in the prior art. It is formed so that electricity can be applied to the body surface.

Further, a pair of cut lines 14 are provided at an appropriate interval on the periphery of the pressure-sensitive adhesive sheet 1 for a low-frequency treatment device, and the cut lines of the pressure-sensitive adhesive sheet 1 adhered to the body surface (skin). First, the part of the ear part 15 formed between the parts 14 is peeled off, and the entire adhesive sheet 1 is peeled off by holding the ear part 15, so that the entire adhesive sheet 1 and the electrode 4 and the electrode holder 5 can be easily peeled from the skin. It is configured so that

Although not shown, the skin adhesive layer 1
2, a diagonal lattice-like groove similar to that of the above-described embodiment is formed on the skin adhesive surface 12, so that the adhesive sheet 1 adhered to the skin can be more easily peeled off from the skin. I have.

Example 4 A pressure-sensitive adhesive sheet 1 for a low-frequency therapeutic device according to still another example of the present invention shown in the perspective view of FIG. 7 has a skin adhesive layer 12 adhered to one entire surface of a base material 11 made of polyethylene nonwoven fabric. The electrode adhesive layer 16 is adhered to the center of the opposite surface.
In this adhesive sheet 1, the electrode 4 fixed to the electrode holder 5 is adhered to the electrode adhesive layer 14 and the skin adhesive layer 12 is completely adhered to the body surface as in the case shown in FIG. To fix electrode 4 to the skin.

The skin adhesive layer 12 and the lidocaine hydrochloride support layer 13 were made of a non-ionic water-soluble cellulose ether water-absorbing agent (85% by weight of a commercially available acrylic adhesive) in the same manner as the adhesive layer of the above embodiment. 5% by weight of Shin-Etsu Chemical Metroose 60SH) and 10% by weight of salt water (2% aqueous sodium chloride solution) as an electrolyte were mixed thoroughly, and then jetted from a nozzle toward the base material 11 at high pressure.
A layer is formed on one surface of the base material 11 in a state in which a number of fine holes are formed by dispersion in air (air entrainment). A lidocaine hydrochloride carrier layer 13 is formed by applying a circular shape to the center of the exposed surface of the layer 12.

The electrode adhesive layer 16 is formed in the same manner as the skin adhesive layer 12 except that the electrode adhesive layer 16 is provided even if the arrangement range is limited using a mask.

Further, in each of the above embodiments, the ear 15
Is formed by inserting two cut lines 9 in the outline of the adhesive sheet 1, but in this embodiment, a part of the outline of the adhesive sheet 1 is projected outward to form the ear 10. doing.

In the fourth embodiment, the electrode is detachably connected to the center. However, the electrode may be detachably connected via the ear 15.

[0092] Using the low-frequency treatment device commercially available as a comparative example and those of Examples 1 and 3, 15 panelists with back pain
(Women age 45-53 years old) were divided into 3 groups of 5 people, each with an adhesive sheet 1 attached to the waist and energized,
In each of Examples 1 and 3, the lower back pain was resolved about 10 minutes after the energization, but in the comparative example, the lower back pain was not resolved even 20 minutes after the energization. However, in the comparative example,
Twenty minutes after the application of electricity, back pain was alleviated.

In the case of Examples 1 and 3, the electrodes were removed after 10 minutes of electricity, the adhesive sheet 1 was left alone, and a protective sheet made of a polyethylene film was adhered to the surface of the electrode. The adhesive sheet 1 was removed, and a normal life was performed. As a result, no back pain occurred even after 7 days.

On the other hand, in the case of the comparative example, the adhesive sheet 1 was removed 20 minutes after the power was turned on, and a normal life was performed.
As a result, occurrence of low back pain was recognized in 1 to 2 days.

[0095]

According to the present invention, the adhesive layer for fixing the electrode of the low-frequency treatment device to the body surface contains at least one of a poultice, a transdermally absorbable drug, a magnet and a far-infrared radiator. Since it is carried, it is necessary to obtain not only a low-frequency therapeutic effect but also at least one of a compressing effect by a poultice, a medicinal effect by a percutaneously absorbable drug, a magnetic therapeutic effect by a magnet, or a thermal effect by a far-infrared radiator As a result, an effect is obtained in which at least one of the compressing effect, the medicinal effect, the magnetic therapeutic effect, or the thermal effect is synergistic with the low-frequency therapeutic effect to further enhance the therapeutic effect.

In this case, examples of the low-frequency treatment effect include treatment and remission of peripheral nerve palsy, motor paralysis, muscle pain or neuralgia, relaxation of muscle stiffness, recovery from fatigue, and promotion of blood circulation.

In the present invention, the adhesive layer is removably adhered to the electrode, or the ear is extended to at least one portion of the peripheral edge of the adhesive layer, and the electrode is detached via the ear. By being freely connected, the adhesive layer can be removed from the electrode.As a result, without applying electricity, the adhesive layer can easily provide a compressing effect, a pharmacological effect, a magnetic therapeutic effect, and the like.
It is possible to obtain a heating effect by far-infrared rays, and also to obtain an effect of further improving the handleability and the usability.

In this case, in order to prevent the adhesive layer from adhering to the undergarment and contaminating the undergarment, or to prevent the poultice, the transdermal absorbent, the magnet or the far-infrared radiator from adhering to the undergarment. Then, the surface of the adhesive layer may be covered with a protective sheet.

The low-frequency treatment device according to the present invention is characterized by including the low-frequency treatment pressure-sensitive adhesive sheet according to the present invention.
As a result of obtaining at least one of a compressing effect by a compress, a medicinal effect by a percutaneously absorbable drug, a magnetic therapeutic effect by a magnet, or a thermal effect by a far-infrared radiator, the compressive effect, medicinal effect, magnetic therapeutic effect or At least one of the warming effect and the low-frequency treatment effect have a synergistic effect to further enhance the treatment effect.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of the present invention.

FIG. 2 is a perspective view showing an example of use of an embodiment of the present invention.

FIG. 3 is a perspective view showing another example of use of the embodiment of the present invention.

FIG. 4 is a perspective view showing another example of use of the embodiment of the present invention.

FIG. 5 is a perspective view of another embodiment of the present invention.

FIG. 6 is a perspective view of still another embodiment of the present invention.

FIG. 7 is a perspective view of still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Adhesive sheet 2 Adhesive layer 3 Lidocaine hydrochloride support layer 4 Electrode 5 Electrode holder 11 Base material 12 Skin adhesive layer 13 Lidocaine hydrochloride support layer 15 Ear part 16 Electrode adhesive layer

Claims (15)

[Claims] 1. An adhesive layer laminated on at least a peripheral portion or an edge portion for fixing an electrode of a low-frequency treatment device to a body surface, a compress, a percutaneously absorbable drug, a magnet or a far-infrared radiator. Characterized in that at least one of them is contained or supported. 2. The pressure-sensitive adhesive sheet according to claim 1, wherein the pressure-sensitive adhesive layer has water absorbency. 3. The pressure-sensitive adhesive sheet for low-frequency treatment according to claim 1, wherein the pressure-sensitive adhesive layer is formed of a pressure-sensitive adhesive and is a single layer having a large number of fine holes. 4. The pressure-sensitive adhesive sheet for low frequency treatment according to claim 2, wherein the pressure-sensitive adhesive layer contains or carries a water-absorbing agent. 5. A two-layer structure comprising a skin adhesive layer in which the adhesive layer is made of an adhesive and adhered to the body surface, and an electrode adhesive layer made of an adhesive of the same or different nature as the adhesive layer and adhered to an electrode. The pressure-sensitive adhesive sheet for low frequency treatment according to any one of claims 1 to 4, comprising a structure. 6. The adhesive sheet for low frequency treatment according to claim 5, wherein the skin adhesive layer has a large number of fine pores. 7. The pressure-sensitive adhesive sheet for low frequency treatment according to claim 5, wherein the skin adhesive layer and / or the electrode adhesive layer contains or carries a water absorbing agent. 8. The adhesive sheet for low frequency treatment according to claim 5, wherein the adhesive layer comprises a substrate and a skin adhesive layer laminated on the body surface side. 9. The pressure-sensitive adhesive sheet for low frequency treatment according to claim 8, wherein the substrate has a large number of fine holes. 10. The adhesive sheet for low frequency treatment according to claim 8, wherein the skin adhesive layer contains or carries a water absorbing agent. 11. The pressure-sensitive adhesive sheet for low frequency treatment according to claim 8, further comprising an electrode adhesive layer on an electrode side surface of the substrate. 12. The pressure-sensitive adhesive sheet for low frequency treatment according to claim 1, wherein the pressure-sensitive adhesive layer is detachably attached to the electrode. 13. The low-pressure terminal according to claim 1, wherein a lug extends to at least one portion of a peripheral edge of the adhesive layer, and an electrode is detachably connected through the lug. Adhesive sheet for frequency treatment. 14. An adhesive sheet for low frequency treatment comprising the pressure-sensitive adhesive sheet for low frequency treatment according to claim 12 and a protective sheet covering the surface of the adhesive layer in the adhesive sheet for low frequency treatment. 15. A low frequency treatment device comprising the pressure-sensitive adhesive sheet for low frequency treatment according to claim 1. Description: