JPH08173554A - Skin contact therapeutic apparatus - Google Patents

Abstract

PURPOSE: To provide a metal positive electrode/semiconductor negative electrode type bioelectric cell skin contact therapeutic apparatus which is prevented from causing a skin damage by electrically connecting a pair of conductive minerals, in which relationship of standard single electrode potential is specifically determined, to each other at respective skin non-contact portions via a protective resistor having a specific resistance value. CONSTITUTION: A first conductive meneral 1 is formed of a brass disk and a protrusion Ir is formed at its central part. Gold plating is applied to a surface having the protrusion Ir , and the protrusion Ir constitutes a skin contact part. In this case, a first skin contact substance is 18-karats gold. A second conductive mineral 2 is formed of a zinc-made ring and a surface thereof is heat treated to form a specified zinc oxide coating film. A second skin contact substance formed of the second conductive mineral 2 is formed of a zinc oxide of an n-type semiconductor, and standard single electrode potential thereof is made lower than that of the first skin contact substance. Both the conductive minerals 1, 2 are electrically connected to each other a protective resistor 3 of resistance 0.1-50MΩ at a skin non-contact portion. As the protective resistor 3, carbon powder dispersed in an epoxy resin, for example, can be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin care device.
In particular, the present invention relates to a skin treatment device which is effective in resolving indefinite complaints such as shoulder stiffness and back pain.

[0002]

2. Description of the Related Art In recent years, the number of patients suffering from chronic stiffness and pain has increased with the complexity of lifestyles and the increase in the number of elderly people. The main cause is said to be local fatigue of muscles and nerves. The causes and causes of muscle and nerve fatigue vary from person to person and to a different extent, but if the cause is in daily life rather than a transient one such as muscle fatigue from sports, Often becomes a chronic disease. If stiffness and pain are severe, you will have to rely on physical therapy or acupuncture treatment at the hospital, but even a relatively mild case causes discomfort (indefinite complaints) in daily life, so a simple treatment method Development is required.

Conventionally, poultices, hot moxibustion, metal particles, magnetic therapy tools, low-frequency therapy devices, etc. have been developed and marketed as tools for treating stiffness and pain at home. All of these have been developed with the aim of promoting blood circulation in the affected area and thereby purifying locally accumulated waste substances. Of these, poultices, hot moxibustion, and magnetic therapy devices have the effect of vasodilation, low-frequency therapy devices have the physical effect of regularly tightening and relaxing the muscles, and metal particles have the meridian and oriental medicine in Oriental medicine.
It is intended for acupuncture treatment. On the other hand, the present inventor has developed an ion infiltrator capable of healing fatigue of muscles and nerves by a weak direct current electromotive force that forms a bio-cell during skin contact (Japanese Patent Nos. 1388949 and 14273).
60, Patent No. 1631137, Utility Model 19221
No. 66). These ion infiltrators are more effective than the above-mentioned household treatment tools for treating stiffness and pain.

Similar to the above-mentioned ion infiltrator, a therapeutic tool for forming a bio-cell is disclosed which uses a combination of different types of external circuit short-circuiting metals (for example, Japanese Utility Model Laid-Open No. 57-103743). . The ion infiltrator of the present inventor conducts a skin contact by conductively connecting a semiconductor crystal and a metal having a higher standard single pole potential than the semiconductor crystal, and is different from the skin contact tool of the above-mentioned dissimilar metal combination in the structure and the subsequent effect. To FIG. 2 is a diagram for explaining the difference between the two skin-jointing tools. FIG. 2 (A) shows the principle of a bio-cell using a combination of a metal positive electrode / semiconductor negative electrode. That is, in this bio-cell, the electrons flowing out from the semiconductor negative electrode to the metal positive electrode flow into the skin, which is the electrolyte, from the metal positive electrode and undergo a reducing action (for example, for iron ions distributed in the body, Fe ³⁺ + e → F).
e ²⁺ ) and at the same time, holes generated in the semiconductor negative electrode lacking electrons drift due to the internal electric field of the Schottky barrier generated in the skin contact surface and concentrate on the skin contact surface of the semiconductor crystal. Ionize semiconductor atoms. Since the internal electric field acts to separate positive ions and holes from the semiconductor negative electrode, the dissociated semiconductor ions penetrate into the skin together with the holes. In the skin, holes oxidize (eg Fe ³ ++
h ⁺ → Fe ²⁺ ) is produced. Further, the Schottky barrier on the skin-contacting surface has a function of preventing electrons and anions from flowing into the semiconductor from the inside of the skin, so that the above-described participation action of the negative electrode (exfoliation of cations and washout of holes) occurs. It continues to be stable, and the electromotive force is stable for a long time.

On the other hand, a combination of different metals (eg Cu / Z
2B, the electrons flow out from the metal B toward the metal A having a larger electron affinity x, so that the metal B lacks electrons and becomes positive. Withstand electricity (x _A > x _B ). However, since metal B does not form a Schottky barrier at the skin contact surface,
Negative ions OH ⁻ derived from water distributed on or near the skin surface penetrate into the surface layer of metal B and are rapidly adsorbed and combined. As a result, a hydroxide is formed on the skin contact surface of the metal B. For example, in the combination of Cu / Zn, a reaction of Zn + 20H ⁻ → Z (OH) ₂ occurs at the skin contact surface of Zn which is the metal B. These base metal hydroxides are all insulative, so that the surface of the metal B has a high resistance and the electromotive force becomes unstable. Eventually, power generation stops as the hydroxide layer thickness increases. This is the surface passivation phenomenon.

Further, in the combination of the metal positive electrode / semiconductor negative electrode, as shown in FIG. 2 (A), the reduction product ions (eg Fe ²⁺ ) under the positive electrode and the oxidation product ions (eg Fe ³⁺ ) under the negative electrode interact with each other. Since it diffuses to form an effective flow of ionic charges in the skin in the direction shown in the figure and compensates for the ion deficiency in each region, so-called back electromotive force of the battery is unlikely to occur.
On the other hand, in the case of the combination of different metals, as shown in FIG. 2B, reduction product ions (for example, F
Since the shortage of the reducible ions (for example, Fe ³⁺ ) that is the source of e ²⁺ ) is not compensated from below the semiconductor negative electrode, there is also a drawback that the reducible ions gradually become insufficient and a counter electromotive force is easily generated. As described above, the metal positive electrode / semiconductor negative electrode type biological battery with the external circuit short-circuited exhibits a stable oxidation / reduction action after skin contact, and thus a stable electromotive force.
Practical stiffness, with little deterioration even after long-term skin contact
It is highly effective as a treatment tool for pain.

[0007]

[Problems of the prior art] The metal positive electrode / semiconductor negative electrode type biological battery whose operation has been described with reference to FIG. 2 (A) is effective because a stable electromotive force continuously applies electrical stimulation to muscle and nervous system tissues. It can eliminate stiffness and pain. The cause of chronic stiffness and pain is usually in the daily life of each patient, so even if the therapeutic effect is temporarily exerted, stiffness and pain often return again if the treatment is stopped. Therefore, the above-mentioned bio battery is often used for a long period of time. The theoretical electromotive force of the bio-cell is determined by the material combination of the metal positive electrode and the semiconductor negative electrode and the sum of chemical energy of various oxidation (under negative electrode) / reduction (under positive electrode) reactions in the skin. Therefore, when the same person is skin-contacted at the same place, the electromotive force, and thus the electrical stimulation value can be adjusted by the material combination.

When the theoretically generated electromotive force is represented by voltage and is E _T , the external electromotive force E extracted between the metal positive electrode and the semiconductor negative electrode is E≈ become _{(R C1 + R C2) I} = E T -R S I (1). Here, R _S is the impedance between electrodes in the skin, that is, the internal resistance of the bio-cell (hereinafter simply referred to as “skin impedance”), R _C1 and R _C2 are the contact resistances between each electrode and the skin, and R _S is The sum of the contact resistances R _C1 and R _C2 , I is the circuit current. It is considered that the above-mentioned therapeutic effect for relieving stiffness and pain is caused by current stimulation of the bio-battery, so the current I may be increased to obtain a strong therapeutic effect. The current I is given by the following equation. And, in general, R _C2 >> R _C1 .

[0009]

[Equation 1]

The elderly generally have a low water content in the skin, and therefore the contact resistance R (R _C1 + R _C2 ) and the skin impedance R _S are both high. The skin impedance R _S is
It can be reduced by shortening the distance between the metal positive electrode / semiconductor negative electrode. Therefore, the elderly and the ill patients, the material combination which gives a high theoretical generating electromotive force E _T,
It is effective to devise the device shape of the skin treatment device (to reduce the skin impedance R _S and the contact resistance R _C (R _C1 + R _C2 )). However, the skin impedance of a living body has a property that it is extremely easy to change. In particular, the present inventors, in the process of application test of the bio-cell,
We have uniquely discovered a phenomenon in which the skin impedance is significantly reduced when the muscle and nervous system tissues are physiologically activated by skin contact energization of a bio-cell. Usually the skin impedance R _S
Is 10 to 50 MΩ / cm, and the contact resistance R _C (=
R _C1 + R _C2 ) is 1 to 15 MΩ / cm, but the skin impedance at the skin contact site before and after the skin contact of the patient in which stiffness and pain are relieved by the skin contact of the biological battery is measured, and the skin impedance is R _S and contact resistance R
It was confirmed that both _C were reduced by about 50 to 95%. It is considered that this is because the ionic conductivity in the skin locally increased due to the activation of metabolism such as skin respiration.

Since the theoretical electromotive force E _T basically does not change, according to the equation (1), an unintended increase in the skin current value I (increase of 2 to 20 times) is caused as a result of physiological activation. Will be brought. Such a large increase in current value is
Causes excessive irritation to skin tissue. Therefore, patients with weak skin may have an allergic reaction and may complain of redness and scratching. In other words, there were occasional cases where skin damage was caused in exchange for treatment of stiffness and pain.
This can of course be dealt with by selecting a combination with a small theoretical electromotive force E _T from the beginning, but with a combination with a small theoretical electromotive force E _T , the energization effect is limited, so that the elderly and seriously ill Patients are not at risk of diminished therapeutic efficacy. The above problems are caused by the present inventors.
It was originally discovered.

[0012]

SUMMARY OF THE INVENTION Therefore, a first object of the present invention is a metal positive electrode / semiconductor negative electrode type bioelectrical battery skin which is less likely to cause skin damage even when the skin impedance is lowered due to physiological activation during skin contact. It is to provide a treatment tool. It is a second object of the present invention to provide an inexpensive and disposable bio-cell skin treatment device.

[0013]

[Means for achieving the object]
In order to achieve the above object, a skin treatment tool according to the present invention includes a first conductive mineral (conductive mineral A) 1, a second conductive mineral (conductive mineral B) 2, and a protective resistance. 3, the first conductive mineral 1 has at least a skin-contacting surface formed of a first skin-contacting material made of a noble metal or an alloy thereof, and the second conductive mineral 2 includes at least a skin-contacting material. The contact surface is composed of a second skin contact material made of an n-type semiconductor, and the combination of the first skin contact material and the second skin contact material is:
Such that the standard monopolar potential of the first skin contact material is higher than that of the second skin contact material, or the standard monopolar potential of the second skin contact material is the first skin contact material. The first conductive mineral 1 and the second conductive mineral 2 are selected so as to be lower than that of the substance, and the first conductive mineral 1 and the second conductive mineral 2 are arranged close to each other, and in the non-skin contact region of each other, the protective resistance is 3 is electrically connected, and the resistance value R of the protection resistor 3 is 0.1 to
An appropriate value is selected from the range of 50 MΩ according to the potential difference between the standard monopolar potentials of the first and second skin-contact substances, and the first conductive mineral 1 and the second conductive material are selected. What is Mineral 2?
It is used in skin contact at the same time.

The second skin contact material is an oxide semiconductor in order to realize an inexpensive and disposable skin contact tool, and the second conductive mineral 2 constitutes these oxide semiconductors. It is preferable that it is a metal element. The oxide semiconductor is, for example, indium oxide In ₂ O ₃ , antimony oxide Sb ₂ O ₅ , tin oxide SnO, zinc oxide ZnO, oxygen-deficient aluminum oxide Al ₂ O _3-x , and oxygen-deficient vanadium oxide V ₂ O _5-x . The second conductive mineral 2 is preferably indium In for indium oxide In ₂ O _{3 and} antimony Sb for antimony oxide Sb ₂ O _5, for example. Further, a magnetic field can be applied to the skin joint tool having the protection resistor 3. The strength of the magnetic field is such that the movement of the electrons injected into the skin from the first skin contact material and the holes injected into the skin from the second skin contact material during the skin contact is affected. Let it be strength.

[0015]

When the first conductive mineral and the second conductive mineral are electrically connected to each other through the protective resistance R at their non-skin contact portions, a closed circuit as shown in FIG. 3 is formed during the skin contact. Therefore, the current I flows. The current I is given by the following equation (1) or (2). (R + R _C1 + R _C2 ) I = E _T −R _S I (1) I = E _T / (R _S + R _C1 + R _C2 ) (2) Where, skin impedance R _S and contact resistance R _C1 ,
R _C2 is variable. Then, as described above, R _SR
>> R _C2 >> R _C1 . Therefore, if the protective resistance R is selected to have a size of about skin impedance R _{S, as} can be seen from the formula (2), even if the skin impedance is reduced by about one digit due to physiological activation, the current is at most twice as high. It is only possible to prevent skin damage due to overcurrent. A biological battery having a positive and negative electrode integrated structure in which a protective resistance is formed of a resin in which a conductive filler is dispersed, and a first conductive mineral and a second conductive mineral are adhered by this resin to form an external circuit connection It is compact and can be skinned with one touch.

When the skin contact surface of the conductive mineral B is formed of an oxide semiconductor film and the substrate thereof is formed of a metal element forming this oxide semiconductor, the skin behaves differently from the above-mentioned ion infiltrator. do. Such a double structure can be easily applied to the surface of a metal having a standard monopolar potential (small electron affinity x) smaller than that of the positive electrode metal shell (first skin contact material) by acid treatment. It can be obtained by forming a metal oxide film having a thickness of 1 μm or less. Generally, the width of the high electric field region (depletion layer region due to the Schottky barrier) in the semiconductor formed on the negative electrode skin contact surface reaches 1 to 3 μm. This means that the entire film is depleted.

As shown in FIG. 3, when a protective resistance R is inserted to form an electrically closed circuit, electrons e ⁻ thermally excited from the conductive mineral B (negative electrode) to the conductive mineral A (positive electrode) side. The holes h ⁺ biased to the internal electric field after flowing out are injected into the skin very quickly, but the semiconductor ions (S ⁺ ) are not separated and injected unlike the ion infiltrator. This is because the oxide semiconductor has a strong ionic bond between metal and oxygen. Rather, when electrons flow out and become positively charged, they become chemically active and accelerate the oxidation reaction at the metal interface. Then, the film thickness of the oxide semiconductor rapidly increases to the original high electric field region width of approximately 1 to 3 μm. Oxidation gradually progresses even after this thickness, and the peeling of semiconductor ions from the skin-contact surface as seen in covalently bonded semiconductors is
It is thought that it hardly occurs. By using the oxide semiconductor negative electrode formed by the surface treatment of the metal as described above, the production cost is reduced, and it is possible to form an inexpensive and disposable skin treatment implement.

In FIG. 4, a magnetic field H is applied to a bio-cell in which a protective resistance R is placed in an external circuit to electrically connect a positive electrode and a negative electrode to the movement of electrons and holes injected into the skin. 3 schematically shows movements of electrons and holes in the case of. In FIG. 4, a bio battery electrode (conductive mineral A,
B) It is assumed that a magnetic field H having a uniform strength is applied in the vicinity of the skin in the illustrated direction (direction from the front side to the back side of the paper surface). At this time, the electron e ⁻ injected into the skin below the positive electrode and the hole h ⁺ injected into the skin below the negative electrode are circularly moved in the directions shown by the action of the electromagnetic force. The radius r is inversely proportional to the magnetic field strength H, and is proportional to the skin permeation rate and the electron mass (or hole mass). Due to this circular motion, the reducing action of electrons and the oxidizing action of holes spread to the outside of each electrode, so that the local concentration of reduction and oxidation products is reduced, and the counter electromotive force (depolarization action) of the battery is less likely to occur. Become.

[0019]

EXAMPLE A first example of the skin treatment device according to the present invention will be described. FIG. 5 is a cross-sectional view of the first embodiment in a state of being skin-contacted. In FIG. 5, 1 is a first conductive mineral (conductive mineral A), 2 is a second conductive mineral (conductive mineral B), 3 is protection resistance, 4 is a plaster or adhesive cloth, 5 is skin. Is. First conductive mineral (conductive mineral A) 1 has a diameter 6 mm, the central portion of one surface of the brass disc of thickness 2 mm, provided with a projection 1 _r height 3 mm, the protrusion 1 _r
The surface having (or all or part of) is plated with gold. In this case, the first skin contact material (skin contact material A)
Is gold (18K). The protrusion 1 _r located at the center of the disc 1 constitutes a skin contact portion, and the disc portion excluding the protrusion 1 _r constitutes a conductive portion. The second conductive mineral (conductive mineral B) 2 has an outer diameter of 6 mm, an inner diameter of 2.5 mm, and a thickness of 1 mm.
The surface of the zinc ring of
It is formed by changing to a zinc oxide coating of μm. In this case, the second skin contact substance (skin contact substance B) is n-type semiconductor zinc oxide. The protective resistor 3 is made of an epoxy resin in which carbon powder is dispersed and has a resistivity of 10 ⁸ Ω / cm.
The conductive mineral 1 is applied to a flat portion on the protruding surface side in a thickness of about 1 mm. Resistance value R of protection resistor 3
Is, for example, 10 MΩ (a value substantially equivalent to the skin impedance at the start of skin contact). The protection resistor 3 and the second conductive mineral are adhered to each other by placing the second conductive mineral on the resin before the resin is dried, as shown in the figure. An external circuit of the biomedical battery, which is a skin treatment device, is connected via a protective resistance R. The resistance value of the protective resistor 3 measured at both ends of the first conductive mineral 1 and the second conductive mineral 2 before skin contact was about 10 MΩ.

The clinical trial results of the first embodiment will be described. The skin treatment device was pressed against the affected skin 5 of a shoulder stiffness patient with a gentle plaster 4 to examine the efficacy. The clinical trial was conducted by sticking three pieces to the same person at the same time for three days. Table 1 below shows the results of examining the effectiveness, effectiveness, and ineffectiveness of each of the 75 test subjects by age group.

[0021]

[Table 1]

According to Table 1 above, the effective clinical trial rate, that is, the value obtained by adding the excellent response number and the effective number and dividing this by the total number of subjects is
It turns out that it is 82.7%. Further, it can be seen that the skin trouble such as redness of skin and itchiness is 6.7%.

The first contrast ratio according to the first embodiment will be described. For comparison with the present invention, the first conductive mineral and the second conductive mineral are directly bonded with a conductive paste without interposing a protective resistor (thus, the external circuit is substantially short-circuited). None), a similar test test was performed. The effective clinical trial rate in this case was about 85%, which was slightly higher than that in the first example, but the number of skin troubles increased to about 17%.

When the skin troubles shown in Table 1 above were examined in detail, it was apparent that most of the cases were mild contact dermatitis due to the plaster 3 and that there were few troubles around the electrodes due to electrical stimulation. . On the other hand, more than half of the skin troubles (70% or more of the subjects) of the platform (comparative example) in which the protective resistance R was not used were recognized to be due to the electrical stimulation. In short, the first embodiment of the present invention can reduce the skin trouble due to the electrical stimulation to about 1/4 to 1/5 by introducing the protective resistance 3 as compared with the case before the introduction. Is clear. The external electromotive force of the skin treatment device at the skin contact portion reaches 0.6 to 1.2 volts, but the resistance value R of the protective resistor 3, for example, about 10 MΩ.
(A value approximately equivalent to the skin impedance at the start of skin contact)
However, it suppresses overcurrent after physiological activation. The effect of introducing the protection resistor 3 is clear.

A second embodiment of the skin care device of the present invention will be described. 6A and 6B are views showing the configuration of the skin treatment tool of the second embodiment, wherein FIG. 6A is a top view and FIG. 6B is a side view. In FIG. 6, 1 is a first conductive mineral (conductive mineral A), 2 is a second conductive mineral (conductive mineral B), 3 is a protective resistance, 4 is an adhesive cloth, and 5 is skin. . The first conductive mineral (conductive mineral A) 1 is a thin tin film surface plated with rhodium having a thickness of about 2 μm. The second conductive mineral 2 (conductive mineral B) is a thin film of tin on which a thin film of tin oxide having a thickness of 0.5 μm is deposited. The adhesive cloth 4 has an appropriate size, for example, 5
0x50mm ^2nd place. The peripheral portion functions as a skin contact part.

The protective resistor 3 is made of indium oxide In ₂ O ₃
Of a polyimide film layer having a thickness of about 0.5 mm and a resistivity of about 10 ⁶ Ω / cm. In this case, the protection resistance value R is about 0.5 MΩ between the first conductive mineral 1 and the second conductive mineral 2. The layer of the protective resistor 3 is applied to the entire non-skin contact area of the adhesive surface of the adhesive cloth 4 as shown in the figure. Before the polyimide resin of the protection resistor 3 dries, the strip-shaped first conductive mineral 1 and the second conductive mineral 2 are attached to the polyimide resin layer alternately and at regular intervals as shown in the figure. . The width of each of the first conductive mineral 1 and the second conductive mineral 2 is, for example, 2 mm, and the interval is, for example, 1 mm. When the polyimide resin of the protection resistor 3 dries, it becomes a finished product.

The clinical trial results of the second embodiment will be described. Using the skin-contacting treatment tool, a skin-contacting part of the patch cloth 4 is used to skin-contact a part having stiffness or pain. Then, an electrically closed circuit of n-type tin oxide → protective resistance 3 → rhodium → skin → n-type tin oxide is formed, the bio-cell generates electricity, and electrical stimulation is applied to the subcutaneous tissue. In this case, the protection resistance value R is 0..0 between the first conductive mineral 1 and the second conductive mineral 2.
It is about 5 MΩ. The externally extracted electromotive force at the skin contact portion of the second embodiment is 0.3 to 0.7 port, which is considerably lower than that of the first embodiment, and thus even if the protection resistance value R is one digit lower, Skin problems in clinical trials were about 5
It was confirmed that only about%. Since the skin treatment tool of the second embodiment has a large area and flexibility, it has a feature that one sheet can cover a wide affected area. In the clinical trial in which this skin treatment device was applied to patients with low back pain, the effective cure rate exceeded 70%.

The second contrast ratio according to the second embodiment will be described. For comparison, the protective resistance R in the second embodiment was removed, and a skin treatment device in which a tin foil was laid on this portion and adhered with a conductive paste was prepared, and the second comparative example was prepared. As a result, when a clinical trial was conducted, skin troubles were found in 20% of the subjects. In summary, it is clear that the second embodiment of the present invention can reduce the skin trouble due to the electrical stimulation to about 1/4 by introducing the protective resistor 3 compared to before the introduction. .

A third embodiment of the skin-contacting treatment tool of the present invention will be described. FIG. 7 is a sectional view of the third embodiment.
In FIG. 7, 1 is a first conductive mineral (conductive mineral A), 2 is a second conductive mineral (conductive mineral B), 3 is a protective resistance, 4 is an adhesive cloth, and 5 is skin. . The constituent members 1 to 5 of the third embodiment have the same size as that of the first embodiment, and the positive and negative electrode material combination of the first conductive mineral 1 and the second conductive mineral 2 is the first. The same as that of the first embodiment, but the first conductive mineral 1 is magnetized at the end face as shown in the figure. That is, the first conductive mineral (conductive mineral A) 1
Is a sintered ferrite disk having a diameter of 6 mm, a thickness of 2 mm, and a height of 3 mm at the center, and the surface of the disk having the projections is plated with gold having a thickness of 3 μm (18K). It is magnetized in one set of directions. The magnetic flux density was 120 O Gauss near the magnetic pole. The second conductive mineral (conductive mineral B) 2 is formed by forming a zinc oxide film on the surface of a zinc ring by acid treatment. The protection resistor 3 is an epoxy resin in which carbon powder as a conductive filler (additive material) is dispersed.

When the skin-contact treatment device is skin-contacted, a magnetic field H is applied in the skin in the direction shown.
The magnetic flux density of 12,000 gauss is the electron e ⁻ injected into the skin from gold (18K), which is the positive electrode of the bio-cell,
And a magnetic field strength of a magnitude sufficient to exert an electromagnetic force in the movement direction of the holes h ⁺ injected into the skin from the n-type zinc oxide semiconductor which is the negative electrode. As a result, the electrons injected from the positive electrode when in contact with the skin shift in the front direction from the back surface of the paper as shown in the figure, and the holes injected from the negative electrode shift in a circular motion in the opposite direction. Therefore, the carrier densities under the positive electrode and under the negative electrode become low, and the redox region expands to the outside of the electrode by that much, so the polarization due to the accumulation of redox substances under the electrode decreases and the electromotive force is generated even after long-term skin contact The advantage is that the decrease of

The clinical trial results of the third embodiment will be described. Using the skin-care treatment tool of the third example, a shoulder stiffness healing experiment was conducted on a large number of subjects (75 subjects in total) of each age group. Similar to the platform of the first embodiment, each person was applied with 3 pieces for 3 days, and the effective cure rate was calculated by dividing the total of the number of effective responses and the effective number by the total number of subjects. As a result, the effective cure rate was about 89%. The skin trouble remained at a low level of about 5%, which was similar to the second embodiment. The reason why the effective healing rate is higher than that in the case of the first embodiment is considered to be the effect of applying a magnetic field. In this case, it is considered that the physical stimuli that bring about healing of stiffness and pain are synergistically composed of the acupoint pressure contact effect (acupressure effect), the energization effect, and the magnetic effect.

Therefore, for comparison, a skin contact test (shoulder stiffness treatment) was conducted by the same subject using a commercially available magnetic therapy device (flux density 1200 gauss). Also in this case,
3 pieces / person, 3 days affixed and examined the healing result. As a result, the effective cure rate was about 37%. Considering that the above three physical stimuli simply combine linearly to show a healing effect, the contribution of each physical stimulus to the healing effect from the above clinical trial data is that the acupressure effect component is 34.5% and the energization effect component is 5
It is 7.5% and the magnetic effect is 8%.

A fourth embodiment of the skin-contacting treatment tool of the present invention will be described. The fourth embodiment is a generalization of the first embodiment. The skin treatment implement of the fourth embodiment comprises a first conductive mineral, a second conductive mineral, and a protective resistor, and either one of the first conductive mineral and the second conductive mineral is ,
A skin contact part and a conductive part, and a step is provided between the skin contact surface of the skin contact part and the conductive part surface accelerating to the skin contact surface,
The conductive portion of the one of the conductive minerals and the protective resistance and the other conductive minerals are laminated in this order, and mechanically and electrically connected, the one of the conductive minerals of the above The skin contact part and the other conductive mineral are used in skin contact at the same time. The remaining matters of the fourth embodiment are the first
This is the same as the embodiment.

Another embodiment of the present invention will be described. (A) For the first conductive mineral 1, at least the skin contact surface is made of platinum Pt, iridium Ir, palladium Pd, silver Ag, or an alloy containing these, in addition to the gold Au and its alloy, rhodium Rh, and the like. You can In principle, it is of course possible to use a metal having a high standard single-pole potential other than a noble metal, for example, copper Cu, but it is difficult to withstand long-term continuous use because it is easily oxidized. (B) At least the skin contact surface of the second conductive mineral 2 is an M oxide semiconductor other than the above-mentioned zinc oxide ZnO and tin oxide SnO, such as indium oxide In ₂ O ₃ , bismuth oxide Bi ₂ O ₃ , and oxygen. Defective aluminum oxide Al ₂ O _3-x
Etc., or a non-oxide n-type semiconductor, for example, n
It may be -Ge or n-SiC.

(C) For the protective resistor 3, a conductive polymer layer can be used in addition to the conductive filler-dispersed resin, or an inorganic resistor can be used. (D) The protective resistor 3 can also be made of a material whose resistance value is variable depending on the voltage applied to both ends, such as a conductive liquid crystal sandwiched between electrode plates. Such a variable resistance corresponds to the fact that when the subcutaneous tissue is physiologically activated by the action of the bio-cell and the skin impedance R _S and the contact resistance R _C are rapidly reduced, the voltage taken out of the external circuit of the bio-cell becomes high. When the function to increase the resistance value is provided, a large current flows with low resistance when the subcutaneous tissue is inactive (when there is stiffness or pain), and when the stiffness or pain is healed, the resistance increases and the conduction current is suppressed. Therefore, the protection resistance value R is more preferable. (E) The appropriate resistance value R of the protective resistor 3 varies depending on the combination of the positive electrode material and the negative electrode material, but is 0.1 to 50 MΩ as a value empirically determined from the size of the skin impedance and the skin contact test data. You can choose an appropriate value between.
The above examples can be modified in various ways within the spirit of the present invention. Therefore, the scope of the invention is not limited to these examples.

[0034]

As described above, according to the present invention,
Suppresses skin troubles such as redness and pruritus caused by a sharp decrease in skin impedance resulting from healing of stiffness and pain by long-term skin contact with a bio-battery skin therapeutic device at a low rate It has become possible. for that reason,
It has become possible to select a combination of a positive electrode material and a negative electrode material that generate high electromotive force, and it has become possible to provide a more effective skin treatment tool for treating stiffness and pain. Moreover, it has become possible to provide an inexpensive and disposable skin treatment device by utilizing the formation of an oxide thin film semiconductor negative electrode by surface treatment of a metal.

[Brief description of drawings]

FIG. 1 is a diagram showing an equivalent circuit of a bioelectrical power generation skin treatment implement using a semiconductor negative electrode.

FIG. 2 is a view for explaining the operating principle of the bioelectrical skin treatment device.

FIG. 3 is a diagram showing an equivalent circuit of a skin treatment implement of the present invention.

FIG. 4 is a view for explaining the operating principle of the skin treatment implement of the present invention.

FIG. 5 is a sectional view of the first embodiment of the skin treatment implement of the present invention.

FIG. 6 is a diagram showing a configuration of the second exemplary embodiment.

FIG. 7 is a sectional view of the third embodiment.

[Explanation of symbols]

1 1st electroconductive mineral (electroconductive mineral A) 1 _r protrusion 2 2nd electroconductive mineral (electroconductive mineral B) 3 protection resistance 4 adhesive plaster or adhesive cloth 5 skin

Claims (6)

[Claims] 1. A first conductive mineral (1), a second conductive mineral (2), and a protective resistance (3), wherein the first conductive mineral (1) is at least the same. The skin-contacting surface is composed of a first skin-contacting material made of a noble metal or an alloy thereof, and the second conductive mineral (2) has at least a skin-contacting surface,
A combination of the first skin-coating material and the second skin-coating material is composed of a second skin-coating material composed of an n-type semiconductor, and the standard monopolar potential of the first skin-coating material is the first 2 is selected to be higher than that of the second skin-coating material, or the standard monopolar potential of the second skin-coating material is lower than that of the first skin-coating material; The conductive mineral (1) and the second conductive mineral (2) are arranged close to each other and electrically connected to each other in the non-skin contact area through the protective resistor (3). The resistance value (R) of the protection resistor (3) is 0.1 to 50M.
An appropriate value is selected from the range of Ω according to the electromotive force based on the combination of the first and second skin contact substances, and the first conductive mineral (1) and the second conductive mineral (2) is a skin-contact therapeutic device that is used by skin-contacting at the same time. 2. The protective resistance (3) is made of a resin in which a conductive filler is dispersed, and the first conductive mineral (1) and the second conductive mineral (2) are the resin. The skin-contacting treatment tool according to claim 1, wherein the skin-contacting treatment tool is electrically phase-connected by being adhered by. 3. The first skin contact material is an oxide semiconductor, and the second conductive mineral (2) contains a metal element forming the oxide semiconductor. 2. The skin-care treatment tool according to 2. 4. A strength that affects the movement of electrons injected into the skin from the first skin contact material and holes injected into the skin from the second skin contact material during skin contact. The skin treatment tool according to any one of claims 1 to 3, wherein the magnetic field is applied. 5. The first conductive mineral (1) or the second conductive mineral (2) comprises a skin contact portion and a conductive portion, and the skin contact portion and the conductive portion. A step is provided between the conductive part, the conductive part of the conductive mineral, the protective resistance (3), and the other conductive mineral, which are laminated in this order, and mechanically and electrically. The skin-contacting treatment tool according to any one of claims 1 to 4, wherein the skin-contacting part of any one of the conductive minerals and the other conductive mineral are simultaneously skin-contacted. 6. The first conductive mineral (1) is composed of a skin contact portion and a conductive portion, and the skin contact portion is a protrusion (1r) located at a substantially central portion of the board.
The conductive portion is formed of a portion other than the protrusion (1r) of the board, and a through hole is provided in each of the second conductive mineral (2) and the protective resistor (3), In the first conductive mineral (1), the second conductive mineral (2), and the protective resistance (3), the skin contact portion of the first conductive mineral (1) is the protective resistance ( 3) so as to penetrate through the through hole of 3) and the through hole of the second conductive mineral, and to project the conductive portion of the first conductive mineral (1) and the protective resistance (3). The skin contact treatment tool according to claim 5, wherein almost all and almost all of the second conductive mineral (2) are arranged so as to be stacked in this order.