WO2007043429A1

WO2007043429A1 - Face head pad for iontophoresis device, and iontophoresis apparatus comprising the same

Info

Publication number: WO2007043429A1
Application number: PCT/JP2006/319940
Authority: WO
Inventors: Akihiro Shibata
Original assignee: Mc Plaza Co., Ltd.
Priority date: 2005-10-07
Filing date: 2006-10-05
Publication date: 2007-04-19
Also published as: TW200724185A; JP2007098060A

Abstract

This invention provides a face head pad for an iontophoresis device, which has excellent durability and flexibility and can realize more uniform iontophoresis in a relatively wide area such as a face or a scalp in a single iontophoresis procedure in a simpler manner, and an iontophoresis apparatus comprising the face head pad. The face head pad is used in an iontophoresis device and is characterized by comprising an insulating support layer and an electrically conductive silicone rubber layer, the electrically conductive silicone rubber in the electrically conductive silicone rubber layer has a volume resistivity of not more than 15 Ω·cm, a hardness of 50 to 80, and an elongation of not less than 180%.

Description

Specification

Ion Introducer Face 'Head Pad and Iontophoresis Device with the Head Pad Technical Field

The present invention relates to a face head pad for an iontophoresis device and an iontophoresis device including the same.

Background art

[0002] Iontophoresis (iontophoresis), which enhances the cosmetic effect on the skin, is attracting attention. This is a method in which a weak electric current is applied to the skin and ionized, for example, an aqueous solution of a vitamin c derivative such as magnesium ascorbate phosphate (hereinafter referred to as an introducer) penetrates deep into the skin. . Usually, an iontophoresis device is used to allow the introduction agent to penetrate deeply into the skin in a stable and continuous manner. In the operation of this device, the electrode part of the iontophoresis device is applied to the skin and, for example, a weak current of 1 mA is introduced into the human body.

[0003] At this time, for example, the introduction agent contained in the cosmetic cotton wound around the electrode reaches the dermis from the epidermis and effectively acts to maintain the beauty of the skin. In other words, it suppresses an abnormal increase in melanin that causes pigmentation such as spots (liver spots), buckwheat (sparrow eggs), or transient pigmentation (after laser irradiation) on the skin, or it forms a pattern. It is possible to decolorized melanin. The advantage of using an iontophoresis device is not limited to this, and it is also possible to obtain a cleansing effect that removes dirt clogged in pores using, for example, skin 'toner after washing before ion introduction. Such ion introducers are disclosed in Patent Document 1 and Patent Document 2, for example. Further, in Patent Document 3, the portion of the brush that brushes the hair is made of a metal eyelash pin, and an electrode is provided on the portion that can be touched by the handle of the handle, and a high frequency is provided between the eyelash pin and the electrode. A hair nourishing brush comprising a power supply capable of supplying pulses is disclosed!

[0004] However, these conventional iontophoresis devices have a narrow adhesive surface with the skin, and when introducing ions into a relatively wide area such as the face or scalp, the skin to which the iontophoresis device is adhered little by little. I had to introduce ions many times while shifting, and it took a lot of effort.

[0005] It is possible to introduce ions at once in a relatively wide part that compensates for such drawbacks. Attempts have been made to develop on-introducers and tools used for them. For example, in Patent Document 4, a mask body (1) is formed from a web having a water retentive material, and a skin beautifying liquid is impregnated in the mask body (1), and the web of the mask body (1) is further impregnated. There is described a cosmetic mask characterized in that a substance capable of being energized is applied and the electrode conductor of the iontophoresis device (3) can be connected to the energizing substance application part (2). However, when introducing multiple chemicals such as cosmetic liquids, it is necessary to impregnate multiple masks with the chemical liquid and then apply a conductive material to each of them. It was a force that was not enough.

[0006] Patent Document 5 discloses a conductor used for medical and cosmetic purposes in which the conductor (2) is adhered to the whole or a part of one side of the drug-impregnated sheet (1) by a method such as 'welding' pressure bonding. An additive-impregnated sheet is described. However, depending on the material of the conductor, the current flowing in the drug-impregnated sheet may be uneven, or the current may flow relatively uniformly, but the conductor is not flexible enough to introduce ions into the face. When it is necessary to hold the adhesive-impregnated sheet by hand, or when the strength of the conductor is insufficient and the durability is insufficient, the practicality is sufficient.

[0007] In addition, the conductive silicone rubber itself is a known substance, and has been used for electrical contacts such as a remote control switch, conductive parts, and the like. However, it has not been known to use conductive silicon rubber as a face head pad for ion introduction.

[0008] Patent Document 1: Japanese Patent Application Laid-Open No. 2004-237043

Patent Document 2: JP-A-2005-237545

Patent Document 3: Japanese Patent Laid-Open No. 7-241345

Patent Document 4: Japanese Patent No. 2768456

Patent Document 5: Japanese Patent Laid-Open No. 2003-38660

Disclosure of the invention

Problems to be solved by the invention

The present invention is a face pad for an iontophoresis device having excellent durability and flexibility in view of the problems and insufficient points of the conventional iontophoresis device and the tools used therefor as described above. And a face pad for an iontophoresis device that enables simpler and more uniform ion introduction into a relatively large area such as the face and scalp at a time. An object of the present invention is to provide an iontophoresis device having a face head pad.

Means for solving the problem

The present inventors have found that the above problems can be solved by using a face head pad having an insulating support layer and a specific conductive silicon rubber layer, and have completed the present invention.

[0011] That is, the present invention is (1) a face head pad used in an iontophoresis device, which has an insulating support layer and a conductive silicon rubber layer, and the conductive silicon in the conductive silicon rubber layer. A face head pad characterized by a volume resistivity of rubber of 15 Ω'cm or less, a hardness of 50-80, and an elongation of 180% or more. (2) Tensile of conductive silicone rubber (5) Conductive silicon rubber force of conductive silicon rubber layer, conductive silicon rubber containing carbon, and the face 'head node as described in (1) above, characterized in that the strength is 5. OMPa or more The face head pad as described in (1) or (2) above, or (4) the thickness force of the conductive silicone rubber layer is 0.2 to 1. Omm The head * head pad according to any one of (1) to (3) above and (5) insulation support The face head pad according to any one of (1) to (4) above, wherein the layer strength is an insulating resin layer, and (6) the insulating resin layer is an insulating silicon rubber layer (6) characterized in that the thickness of the face head pad as described in (5) above and (7) the insulating silicon rubber layer is from 0.3 to 1.8 mm. The above-mentioned face (1), wherein the drug or cosmetic is attached to the surface of the conductive silicone rubber layer on the opposite side of the face pad in contact with the face head pad or (8) the insulating support. ) To (7), the face head pad according to any one of the above, and (9) the face head pad according to (8) above, wherein the drug or cosmetic is in a jewel form.

[0012] The present invention is also (10) a face head pad set for use in an iontophoresis device, wherein the face head pad according to any one of (1) to (9) above has water retention. The face head pad set as described in (10) above, and (12) having the water retention property, wherein the face head pad set comprising the sheet, and (11) the sheet having water retention property also has a cotton force. The face head pad set according to (10) or (11) above, wherein the sheet to be treated contains a medicine or a cosmetic. [0013] Further, the present invention provides (13) the face head pad according to any one of (1) to (9) or the face head pad set according to any one of (10) to (12). And an iontophoresis device characterized by comprising an iontophoresis device, and (14) a waterproof container that can accommodate the iontophoresis device, The present invention relates to an iontophoresis device.

[0014] The present invention also provides (15) a method for iontophoretics or cosmetics, characterized by using the iontophoresis device described in (13) or (14) above, or (16) the above (14 The ion-introducing device described in 1) is used in a bathroom, and relates to a method for ion-introducing a drug or cosmetic.

The invention's effect

The face head pad having the insulating support layer and the conductive silicon rubber layer of the present invention is excellent in durability and flexibility. In addition, when the face head pad is used, ions can be more easily and more uniformly introduced into a relatively large area such as the face and scalp at a time.

Brief Description of Drawings

FIG. 1 is a diagram showing the shape of a face pad of the present invention.

FIG. 2 is a front view of the ion introducer of the present invention.

FIG. 3 is a side view of the ion introducer of the present invention.

FIG. 4 is a rear view of the ion introducer of the present invention.

FIG. 5 is a view showing an iontophoresis device of the present invention.

FIG. 6 is a diagram showing a voltage waveform (“L” mode) during ion introduction.

FIG. 7 is a diagram showing a voltage waveform (“M” mode) during ion introduction.

FIG. 8 is a diagram showing a voltage waveform (“H” mode) during ion introduction.

FIG. 9 is a diagram showing the shape of the head pad of the present invention.

FIG. 10 is a view showing a conductive silicon rubber layer of the head pad of the present invention on the side opposite to the side in contact with the insulating material.

FIG. 11 is a side view of the conductive silicone rubber layer of the head pad of the present invention.

Explanation of symbols [0017] 1 Cotton puff plate

2 Power switch

3 Polarity switch

4 Buzzer volume control switch

5 Output adjustment switch

6 External terminal

7 Hand plate

8 Monitor lamp

9 Battery cover

10 Face node

11 Ion introducer

12 Connection cord

13 Insulation material

14 Conductive silicone rubber layer

15 Electrode terminal

16 conductors

BEST MODE FOR CARRYING OUT THE INVENTION

[0018] The face head pad of the present invention is a face head pad used in an iontophoresis device, and has an insulating support layer and a conductive silicon rubber layer, and the conductive in the conductive silicon rubber layer. The face-head pad is characterized in that the volume resistivity of the conductive silicone rubber is 15 Ω'cm or less, the hardness is 50 to 80, and the elongation is 180% or more. The face head pad in the present specification represents a face pad or a head pad. The face pad in the present invention means a nod that can be worn on the face, and the head pad in the present invention means a pad that can be worn on the scalp. The face 'head nod' in the present invention is an arbitrary shape that can be attached to any part of the human body other than the face and scalp, for example, the neck, arms, back, chest, legs, abdomen, back of the hand, etc. for convenience. Also includes pads and pads of any shape suitable for attachment to any part of the human body other than the face and scalp that cannot be attached to the face or scalp. The conductive silicone rubber used for the conductive silicone rubber layer of the present invention is not particularly limited as long as the volume resistivity is 15 Ω • cm or less, the hardness is 50 to 80, and the elongation is 180% or more. . The volume resistivity may be 15 Ω′cm or less, preferably 10 Ω′cm or less, more preferably 6 Ω′cm or less, and further preferably 4 Ω′cm or less. The hardness may be in the range of 50 to 80, preferably 50 to 77, more preferably 55 to 69, and still more preferably 62 to 66. Further, the elongation may be 180% or more, preferably 200% or more, more preferably 220% or more, and further preferably 250% or more. By using such conductive silicone rubber, the durability and flexibility of the face head pad is excellent, and ion conduction can be performed more easily and more uniformly once in a relatively large area such as the face and scalp. It becomes possible to enter. In particular, the use of conductive silicon rubber having a high volume resistivity leads to unevenness in the amount of current flowing through the face head pad area. The volume resistivity, hardness, and elongation in the present invention are values measured by the test method of JIS K 6249, respectively.

[0020] The tensile strength of the conductive silicone rubber used in the present invention is not particularly limited, but is preferably 5. OMPa or higher, more preferably 5.5 MPa or higher, and further preferably 6. OMPa or higher, most preferably. Is 6.4MPa or more. By using such conductive silicone rubber, a face head pad with improved durability can be obtained. The tensile strength in the present invention is a value measured by a test method of JIS K 6249.

[0021] The conductive silicone rubber used in the present invention is not particularly limited in the type of conductive material as long as the volume resistivity is 15 Ω'cm or less, the hardness is 50 to 80, and the elongation is 180% or more. However, it is preferable to use carbon from the viewpoint of safety and stability. As long as the volume resistivity is 15 Ω'cm or less, the hardness is 50 to 80, and the elongation is 180% or more, the content of the conductive material in the conductive silicone rubber is not particularly limited. It may be ˜40% by weight. Increasing the content of conductive materials such as carbon decreases the volume resistivity, but increases the hardness and decreases the elongation rate, which tends to decrease the flexibility of the face head pad. It is preferable to set the content appropriately according to the type of the functional substance and silicon rubber. The conductive silicon rubber used in the present invention may contain two or more kinds of conductive substances. [0022] The type of silicone rubber in the conductive silicone rubber is not particularly limited as long as the volume resistivity is 15 Ω · cm or less, the hardness is 50 to 80, and the elongation is 180% or more. In addition to rubber, butyl methyl silicone rubber (VMQ), ferromethyl silicone rubber (PV MQ), methyl silicone rubber (MQ), and fluoro silicone rubber (FVMQ) can be exemplified. Among the conductive silicone rubbers used in the present invention, SRX539U (manufactured by Toray 'Dowcoung' Silicone Co., Ltd.) is particularly excellent because of its excellent balance in volume resistivity, hardness, elongation, and tensile strength. preferable. Conductive silicone rubber is preferable in that it has a low water absorption, so that it can be kept hygienic by dropping the used chemicals by simply washing with water after use. The conductive silicone rubber layer of the present invention may further contain other resins and / or rubbers other than silicone rubber, or may contain two or more types of silicone rubber.

[0023] The thickness of the conductive silicone rubber layer in the present invention is not particularly limited! However, if the thickness of the conductive silicon rubber layer is reduced, the flexibility increases, but the volume resistivity tends to increase. Therefore, it is preferable that the thickness is appropriate. The appropriate thickness depends on the conductive material used for the conductive silicon rubber layer, etc., and the type of silicon rubber, etc., but it cannot be generally stated, but when SRX539U is used, it is 0.2. It is preferable to be set to ˜1 Omm, more preferably 0.3 to 0.7 mm, and even more preferably 0.5 mm.

[0024] The insulating support layer in the present invention is not particularly limited as long as it is a layered insulating support. The electrical resistance of the insulating support in the present invention is not particularly limited. For example, the volume resistivity is 1 × 10 ⁴ Ω′cm or more, more preferably 1 × 10 ⁸ Ω′cm or more. The hardness of the insulating support is not particularly limited, but the hardness may be 50 to 80, preferably 50 to 77, more preferably 55 to 69, and still more preferably 56 to 66. Further, the elongation rate of the insulating support is not particularly limited, but may be 300% or more, preferably 400% or more, more preferably 500% or more.

[0025] The type of the insulating support is not particularly limited, but from the viewpoint of the balance between flexibility and strength (durability), it is more preferable that the insulating rubber is an insulating rubber. Insulating (non-conductive) silicone rubber is more preferable, and DY32-816U (manufactured by Toray Dowco Yung's Silicone Co., Ltd.) is even more preferable. [0026] The thickness of the insulating support layer in the present invention is not particularly limited. However, increasing the thickness increases the strength, but the flexibility tends to decrease. The thickness of the appropriate thickness depends on the flexibility, strength, etc. of the insulating support used, but cannot be generally stated. However, when insulating silicon rubber is used, 0.3-1 The force S is preferably 8 mm, more preferably 0.5 to 1.5 mm, and more preferably 0.7 to 1.2 mm.

[0027] The shape of the face head pad is not particularly limited, and can be appropriately determined according to the shape of the skin where the ion is introduced. For example, in the case of a face pad, the shape is not particularly limited as long as it can be applied to the face, but for example, the part that touches the eyes and mouth is cut out, and the part that touches the nose is cut to fit the face. It can be made into a simple shape. Specifically, for example, a fuss pad having a shape as described in FIG. In the case of a scalp pad, the shape is not particularly limited as long as it can be applied to the scalp. However, for example, by making a comb shape, the pad can be sufficiently brought into contact with the scalp. Specifically, for example, a head pad having a shape as described in FIG. This head pad includes an insulating material 13, a conductive silicon rubber layer 14, an electrode terminal 15, and a conductor 16. One of the electrode conductors of the ion introducer is connected to the electrode terminal 15. Also, the neck node can be a rectangle or the like. A part of the face pad can be used as a neck pad as appropriate.

[0028] the area of the face 'head pad is not particularly limited and can not be said sweepingly because it is left to right on the site such as the skin of interest, if for the face, for example, 100cm ^² ~600cm ² and child bets can be, also, if for scalp, for example, be a 10cm ^² ~400cm ^2.

[0029] The shape of the conductive silicone rubber layer in the present invention is not particularly limited as long as it has a certain thickness. For example, the conductivity of the head pad having a shape as shown in FIG. This includes not only shapes having a layered portion, such as a silicon rubber layer, but also curved shapes, wavy shapes, and the like.

[0030] Furthermore, the face head pad of the present invention is marked with an indication that it is used for an iontophoresis device !, or may be marked with an indication that it is for ion introduction of a drug or cosmetic. Or even Alternatively, an indication that the drug or cosmetic is for ion introduction in a bathroom may be attached.

The method for producing the face head pad of the present invention is not particularly limited, and can be obtained, for example, by forming a conductive silicon layer on the insulating support layer. Further, the face head pad of the present invention may have an arbitrary configuration in addition to the insulating support layer and the conductive silicon layer as long as the effects of the present invention are not hindered. For example, the insulating support layer may have two or more layers, the conductive silicon layer may have two or more layers, or an intermediate layer may be provided between the insulating support layer and the conductive silicon layer. The insulating support layer may further include a coating layer on the surface thereof.

[0032] The face head pad of the present invention can be preferably ion-introduced by being connected to an iontophoresis device. The ion introducer in the present invention is not particularly limited as long as it has an electric circuit and a power source having both positive and negative electrode conductors. The electric circuit preferably further includes a transformer and a capacitor so that the voltage can be adjusted.

[0033] The method of ion introduction is not particularly limited as long as the face head pad of the present invention is used. For example, the following two methods can be exemplified. The first method is the face head pad of the present invention in which one electrode conductor of an iontophoresis device is in contact with the conductive silicone rubber layer, and the drug or cosmetic is attached to the conductive silicone rubber layer. Ion with the conductive silicone rubber layer side of the face head pad in contact with the skin where the ion is introduced and the other electrode conductor of the ion introducer in contact with the skin of the other part An introducer current can flow. The drug cosmetic used in the first method does not have to be in a jelly-like form, but if it is in a jewel-like form, the drug is sufficiently adhered to the face head pad of the present invention. I prefer that.

On the other hand, as the second method, in addition to the face head pad and the iontophoresis device of the present invention, a sheet having water retention can be further used. In the second method, instead of using a face head pad in which a drug or cosmetic material is directly adhered to the conductive silicone rubber layer, the drug or cosmetic material is contained in a water-retaining sheet, and the sheet is made of conductive silicone rubber. Use a face head pad in contact with the layer side. To the face with which this sheet is in contact The sheet side of the pad pad is brought into contact with the skin of the part to be ion-introduced, and an ion introducer current can be passed in the same manner as in the first method. Using the second method makes it easier to continuously ionize multiple drugs or cosmetics, since there is almost no need to wash the face head pad each time another drug or cosmetic is used. Ions can be introduced.

[0034] The types of agents and cosmetics used for iontophoresis are not particularly limited, and examples of cosmetics include ascorbic acid, retinol, amino acids, minerals, phytic acid or their derivatives, bracenter, and the like. Examples of the drug include percutaneously absorbable drugs such as anti-inflammatory agents, analgesics, and anesthetics. Depending on the type of drug or cosmetic, the net charge of the molecule of the drug or cosmetic may become positive when an electric current is passed, and the drug or cosmetic may become negative. When using drugs or cosmetics that have a positive net charge, use a drug or cosmetic that makes the net charge negative by bringing a positive electrode conductor into contact with the face head pad and passing an electric current. In this case, a negative electrode conductor is brought into contact with the face head pad side to flow an electric current, whereby the drug or cosmetic can penetrate into the skin using the electric repulsive force. It should be noted that only one type of drug or cosmetic used for iontophoresis may be used, two or more types of drugs may be used, two or more types of cosmetics may be used, and at least It is also possible to use one or more drugs and at least one cosmetic.

[0035] The ion-introducing part is not particularly limited, and examples thereof include a face, a neck, a scalp, and the like. In addition, the other part is any part of the human body to be ion-introduced and is not particularly limited as long as it is a part other than the part to be ion-introduced. For example, the face, neck, or scalp In the case of introducing ions into the cell, the ears, hands, etc. may be mentioned as other parts.

[0036] When the current applied during the ion introduction changes periodically, the frequency of the current is not particularly limited, but a range of 0.5 to 1.5 kHz can be exemplified. The waveform of the applied current is not particularly limited. For example, in addition to a pulse wave such as a square wave, a complex signal waveform such as a triangular wave or a sine wave may be used. Furthermore, a plurality of wavelengths may be given. In addition to a direct current, an alternating current may be used. The voltage (Vp-p) at the time of ion introduction is not particularly limited, but may be, for example, 1 to: LO, preferably 2 to 8, more preferably 3 to 7, and further preferably 4 to 6. Also, the duty in the case of a pulse wave (ONZOF Although the time ratio (%) of F) is not particularly limited, it can be, for example, 20 to 90%, more preferably 40 to 80%.

[0037] The face head pad set of the present invention comprises the face head pad of the present invention and the sheet having the above-mentioned water retention. The sheet used in the present invention is not particularly limited as long as it has water retention. The sheet having water retention in the present invention is not particularly limited as long as it can retain moisture, but is 1 / 1,000 or more, 1/500 or more, 1/100 or more of the weight of the sheet, preferably Means a sheet that may contain a weight of 1/50 or more, more preferably 1/30 or more, more preferably 1 or more of 10 minutes, most preferably the same weight as the sheet.

[0038] The material of the sheet is not particularly limited, and examples thereof include cotton, cloth, paper, and non-woven fabric. Among these, cotton can be preferably exemplified. The material of the sheet may be one type or two or more types. In addition, the sheets may be used one by one, or two or more sheets of the same or different materials may be used at once, and the sheets may be folded and used.

[0039] The shape of the sheet in the face and head pad set of the present invention is not particularly limited, but can be matched to the shape of the face head pad. The sheet may be sized to cover the entire face 'head pad, or smaller than the face' head pad.

[0040] The sheet in the face head pad set of the present invention may not contain a drug or cosmetic, but may contain a drug or cosmetic. For example, like a wet tissue, if a force sheet is immersed in a drug or cosmetic inside the container, it can be used immediately after being taken out of the container.

[0041] In addition, the face head pad set of the present invention is provided with an indication that it is used for an iontophoresis device, and may be provided with an indication that it is for ion introduction of a drug or cosmetic. The label may indicate that the drug or cosmetic is for ion introduction in a bathroom.

[0042] The iontophoresis device of the present invention comprises the face head pad of the present invention or the face head pad set of the present invention and an ion introducer. The ion introduction device of the present invention is not particularly limited as long as it includes the face / head pad of the present invention or the face / head pad set of the present invention and an arbitrary ion introducer. As an ion introducer There is no particular limitation as long as an electric circuit having both positive and negative electrode conductors and a power source are provided. The electrical circuit preferably further comprises a transformer so that the voltage can be adjusted.

[0043] The frequency of the current that can be applied by the iontophoresis device used in the iontophoresis device of the present invention is not particularly limited, but a range of 0.5 to 1.5 kHz can be exemplified. The waveform of the applied current is not particularly limited. For example, in addition to a pulse wave such as a square wave, a complex signal waveform such as a triangular wave or a sine wave may be used, and a plurality of wavelengths may be given. Further, the current that can be applied by the ion introducer may be a direct current or an alternating current. The voltage (Vp-p) that can be applied by the ion introducer is not particularly limited, but is, for example, 1 to 10, preferably 2 to 8, more preferably 3 to 7, and further preferably 4 to 6. Also, the duty (ONZOFF time ratio (%)) when the current applied by the ion introducer is a pulse wave or the like is not particularly limited, but is, for example, 20 to 90%, more preferably 40 to 80%. . As a result, the drug can be ionically introduced more efficiently. Further, the ion introducer used in the present invention may be an ion conductor capable of introducing ions without being connected to the nod or pad set of the present invention.

[0044] A method for iontophoretic administration of a drug or cosmetic of the present invention is characterized by using the iontophoresis device of the present invention. The method of the present invention is not particularly limited as long as the iontophoresis device of the present invention is used. For example, the following methods can be exemplified.

[0045] A first method is a face head pad of the present invention in which one electrode conductor of an iontophoresis device is in contact with a conductive silicone rubber layer, and the conductive silicone rubber layer is coated with a drug or makeup. The conductive silicone rubber layer side of the face head pad to which the material was attached was brought into contact with the skin of the part where the ion was introduced, and the other electrode conductor of the ion introducer was brought into contact with the skin of the other part. In this state, the current of the ion introducer can be passed. The drug or cosmetic used in the first method may not be in the form of a jewel, but if it is in a jewel, the drug or the cosmetic sufficiently adheres to the face head pad of the present invention. Therefore, it is preferable that the shape is a jewel.

As the second method, in addition to the face head pad and the iontophoresis device of the present invention, a sheet having water retention can be further used. In the second method, the conductive silicone rubber layer Instead of using a face head pad with a drug or cosmetic material directly attached to it, a face head pad in which the drug or cosmetic material is contained in a sheet having water retention and the sheet is brought into contact with the conductive silicone rubber layer side is used. Use. The sheet side of the face head pad that is in contact with this sheet is brought into contact with the skin of the part to be ion-introduced, and the current of the ion introducer can be made to flow as in the first method. When the second method is used, when a plurality of drugs or cosmetics are continuously ion-introduced, the face head node need hardly be washed each time another drug or cosmetic is used. Can be ion-introduced.

[0046] The iontophoresis device of the present invention may further include a waterproof container in addition to the face 'head pad or face' head set and the ion introducer of the present invention. By placing the ion introducer in a waterproof container and taking out the connection cord from the waterproof container, it is possible to introduce ions without damaging the ion introducer even in places where there is a possibility of getting wet, such as in a bathroom. it can. The shape and material of the waterproof container are not particularly limited as long as it has a waterproof effect that does not damage the iontophoresis device.

The method of the present invention also includes a method of ion-introducing a drug or cosmetic, wherein the iontophoresis device of the present invention is used in a bathroom. During bathing, the pores in the skin are wide open so that ions can be introduced more effectively. The ion introduction apparatus of the present invention may have a display indicating that it is for ion introduction in a bathroom of a medicine or cosmetic.

[0047] Hereinafter, the present invention will be described more specifically with reference to examples. However, the technical scope of the present invention is not limited to these examples.

Example

[0048] (1) Face pad

Conductive silicon rubber layer (thickness 0 · 5mm) made of SRX539U (made by Toray 'Dowcoung' Silicone Co., Ltd.) is first molded, and then DY32—816U (insulating silicon rubber: Toray DowcoJung) An insulating support layer (thickness: 1 Omm) was secondarily formed using “Silicon Co., Ltd.”. Residual active groups in the conductive silicon rubber layer are co-vulcanized with a compound in the insulating silicon rubber, and the conductive silicon rubber layer and the insulating silicon rubber layer are bonded without using an adhesive. The obtained pad was processed into the shape shown in FIG. 1 to obtain the face pad of the present invention. The area of one side of this face pad was about 400 cm ² . The resistance of this face pad was measured and found to be about 500 ohms. SRX539 U has a volume resistivity of 3.5 Ω'cm, a hardness of 64, an elongation of 250%, and a tensile strength of 5.0 MPa. DY32-816U has a volume resistivity of about 1 X 10 ¹⁵ Ω'cm, a hardness of 61, an elongation of 527%, and a tensile strength of 9.3 MPa. The volume resistivity, hardness, elongation, and tensile strength were measured in accordance with JIS K 6249.

[0049] (2) Ion introducer

The ion introducer shown in Fig. 2 (front view), Fig. 3 (side view) and Fig. 4 (rear view) was prepared as an ion introducer equipped with an electric circuit having both positive and negative electrode conductors and a power source. . This ion introducer has a cotton puff plate 1, a power switch 2, a polarity switch 3, a buzzer volume control switch 4, an output adjustment switch 5, an external terminal, a hand plate, a monitor lamp, and a battery cover. If this ion introducer is in a narrow range, ions can be introduced without using the face head pad or the like of the present invention. That is, when a cotton puff impregnated with a chemical is applied to the cotton puff plate, the cotton puff is brought into contact with the skin where the ion is to be introduced, and the power switch is turned on with the finger or the like in contact with the hand plate. A current flows from the cotton puff plate to the hand plate via the skin and human body, and the drug is ionized. In addition, the direction of the current can be switched in the reverse direction by switching the polarity switch. The monitor lamp blinks when current flows from the cotton puff plate to the hand plate through the skin or human body, or vice versa. That is, by confirming that the monitor lamp is blinking, it can be confirmed that ions are being introduced. When ion introduction is complete, a buzzer sounds. In addition, by switching the output adjustment switch, the output can be changed to “L” mode (Vp-p 4; duty 50%), “M” mode (Vp-p 6; duty 50%), “H” mode (Vp -p 6; Duty 75%).

[0050] (3) Iontophoresis device

Figure 5 shows the iontophoresis device. One electrode conductor of the above-described ion introducer is connected to the face node, and the other electrode conductor is used in contact with the other part of the body.

[0051] (4) Voltage waveform measurement

Ion introduction is actually performed using the above ion introduction device, It was examined whether it was performed uniformly over the entire bed. Specifically, follow the steps below.

Contact a cotton sheet soaked with a cosmetic solution (placental, mixed solution of ascorbic acid, amino acid, and phetic acid) on the conductive silicone rubber layer side of the face pad to which one electrode conductor of the iontophoresis device is connected. I let you. The surface of the face pad that is in contact with this cotton sheet is in contact with the skin of the face so that it covers the face, and the other electrode conductor is in contact with the ear of the subject. The power switch was turned on and the switch was installed. The voltage at the time of ion introduction was measured to obtain a voltage waveform. The voltage waveforms when the output is set to the “L” mode, “M” mode, and “H” mode are shown in FIGS. 6, 7, and 8, respectively. The voltage frequency was about 1 kHz. This time, ion introduction was performed using a similar ion introducer without using a face pad. That is, a cotton sheet soaked with the same drug solution is placed on a cotton puff plate, which is one electrode of the iontophoresis device, and the ion of the subject is in contact with the hand plate, which is the other electrode. Ion introduction was performed with the power switch of the introducer turned on. The area of the cotton puff plate is approximately 5.5 cm ² .

When the voltage at the time of ion introduction was measured, the same voltage waveform as that obtained when the pad was used was obtained for each of the “L” mode, “M” mode, and “H” mode.

When the face pad is used, the voltage waveform is obtained without any disturbance in the same manner as when the face pad is used. When the face pad of the present invention is used, a relatively large area is obtained. Even so, it was shown that the ion can be introduced evenly and uniformly.

Claims

The scope of the claims

[I] A face used for an iontophoresis device is a head pad having an insulating support layer and a conductive silicon rubber layer, and the volume resistivity of the conductive silicon rubber in the conductive silicon rubber layer is 15 Ω. A face / head pad characterized by having a hardness of cm or less, a hardness of 50 to 80, and an elongation of 180% or more.

[2] The face-head node according to claim 1, wherein the tensile strength of the conductive silicone rubber is 5. OMPa or more.

[3] The face head pad according to [1] or [2], wherein the conductive silicon rubber layer is conductive silicon rubber containing carbon.

[4] The thickness force of the conductive silicone rubber layer is 0.2 to 1. Omm.

3! Face head pad as described in the gap.

[5] The face head node according to any one of claims 1 to 4, wherein the insulating support layer is an insulating resin layer.

[6] The head / head according to claim 5, wherein the insulating resin layer is an insulating silicon rubber layer.

[7] The face head node according to claim 6, wherein the thickness force of the insulating silicon rubber layer is 0.3 to 1.8 mm.

[8] The face head according to any one of [1] to [7], wherein a drug or a cosmetic is attached to the surface of the conductive silicone rubber layer opposite to the surface in contact with the insulating support. Node,

[9] The face 'head or node according to claim 8, wherein the drug or cosmetic is in a jewel form.

[10] A face head pad set for use in an iontophoresis device, wherein the face head pad according to any one of claims 1 to 9, and a face head head, a set having a water retentivity sheet and a force.卜.

[II] The head-head knot set according to claim 10, wherein the water-retaining sheet also has a cotton strength.

[12] The sheet having water retention property contains a drug or a cosmetic. Or the face head pad set described in 11.

[13] The face 'headpad according to any one of claims 1 to 9 or the face' headpad set according to any one of claims 10 to 12 and an iontophoresis device. An iontophoresis device.

14. The iontophoresis device according to claim 13, further comprising a waterproof container that can accommodate the iontophoresis device.

[15] A method of ion-introducing a drug or a cosmetic comprising using the iontophoresis device according to claim 13 or 14.

[16] A method for ionically introducing a drug or cosmetic, characterized in that the iontophoresis device according to claim 14 is used in a bathroom.