WO2016052818A1

WO2016052818A1 - Dermal patch and method for skin rejuvenation

Info

Publication number: WO2016052818A1
Application number: PCT/KR2014/012992
Authority: WO
Inventors: Dongwon Kim; Nayoung Kim; Haeseok EO; Taekjong KWAK; Mina Kim; Joonoh MYOUNG
Original assignee: Lg Electronics Inc.; Lg Household & Health Care Ltd.
Priority date: 2014-09-30
Filing date: 2014-12-29
Publication date: 2016-04-07
Also published as: KR20160038567A; KR102338552B1

Abstract

The present disclosure relates to a dermal patch including a base part which is configured as a deformable elastic member, an adhesive structure that is provided on one surface of the base part and has a micro-setae structure to be adhered on a skin, a stimulation part that is provided on the one surface of the base part and configured to apply at least one of light and micro-current to the skin, and an extension part that is configured to apply a physical force to the skin by deforming the base part while the dermal patch is adhered on the skin.

Description

DERMAL PATCH AND METHOD FOR SKIN REJUVENATION

The present disclosure relates to a dermal patch which is capable of attaching onto a skin.

As human beings grow older, their skins are losing resilience and have wrinkles as a phenomenon that the skins are sagging due to losing resistance to gravity. With enriched lives owing to industrial and economical improvements, most of the moderns desire to have younger and more beautiful faces and bodies and maintain them as long as they live, beyond the requirements for simply leading healthy lives. In recent time, keeping up with the trends of the times, plastic surgeries and beauty industries are dramatically growing, and associated cosmetic industries are also further expanding. Therefore, people having wrinkles on their faces, older people or people interested in their skins, specifically, women try to remove wrinkles or protect faces in various manners.

Among various methods for preventing wrinkles and skin aging, plastic surgeries require for injection or cutting and stitching after anesthesia, and expect visible and immediate effects. However, if a surgery is failed, it is difficult to recover such skins to an original state, and cases of side-effects caused after plastic surgeries have been successively reported. Thus, most people are afraid of and feel uncomfortable to the plastic surgeries. Above all, economically, huge costs are incurred in those plastic surgeries. Recently, in addition to the plastic surgeries, functional cosmetic devices which apply light or electric stimulus to skins for the purpose of maintaining skins in an original state or making up the skins are introduced one after another.

However, cosmetic devices which are configured to apply appropriate stimulus to skins have disadvantages of being uncomfortable to carry, and having inconvenient structures for applying stimulus directly onto faces of persons with various angular portions.

Therefore, to obviate those problems, an aspect of the detailed description is to provide a dermal patch which comes in contact directly with a skin and stimulates the skin according to deformation.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a dermal patch including a base part which is configured as a deformable elastic member, an adhesive structure that is provided on one surface of the base part and has a micro-setae structure to be adhered on a skin, a stimulation part that is provided on the one surface of the base part and configured to apply at least one of light and micro-current to the skin, and an extension part that is configured to apply a physical force to the skin by deforming the base part while the dermal patch is adhered on the skin.

In one embodiment associated with the present disclosure, the base part may include first and second base members that are separated from each other, and the extension part may be located between the first and second base members. A distance between the first and second base members may increase in response to a deformation of the extension part.

In one embodiment associated with the present disclosure, the extension part may be configured as a deformation sensor which changes in shape in response to an electric signal.

In one embodiment associated with the present disclosure, the stimulation part may include a plurality of light-emitting diode (LED) units that are arranged in a preset manner on the one surface of the base part to emit light having a preset wavelength, and an electrode unit that is configured to apply the micro-current to a surface of the skin.

In one embodiment associated with the present disclosure, the extension part may be formed along an edge of the base part.

In one embodiment associated with the present disclosure, the extension part may be configured as a deformation sensor that is changeable (deformable) in length in response to an electric signal for changing an area of the base part.

In one embodiment associated with the present disclosure, the extension part may include a plurality of extending members that extend to be spaced apart from each other by an external force, and elastic members that are provided between the plurality of extending members for elastic support therebetween.

In one embodiment associated with the present disclosure, the extending members may be formed in a manner of protruding from the other surface of the base part.

In one embodiment associated with the present disclosure, the adhesive structure may include a plurality of adhesion units arranged into a preset pattern, and each of the plurality of adhesion units may be provided with a plurality of adhering portions each having a groove for generating negative pressure on the surface of the skin.

In one embodiment associated with the present disclosure, the micro-setae may have a spatula shape.

In one embodiment associated with the present disclosure, the extension part may be configured as a deformation sensor deformable by an electric signal. The extension part may be provided between the adhesion units so as to extend a distance between the adhesion units.

In one embodiment associated with the present disclosure, the stimulation part may include a plurality of LED units that are arranged on the one surface in a preset manner so as to emit light having a preset wavelength.

In one embodiment associated with the present disclosure, the stimulation part may further include an electrode unit that is configured to apply the micro-current to the surface of the skin.

In one embodiment associated with the present disclosure, the dermal patch may further include a guide portion that is provided on the base part and configured to allow the base part to be foldable.

In one embodiment associated with the present disclosure, the guide portion may be configured as a guide groove formed on the other surface of the base part.

In one embodiment associated with the present disclosure, the guide portion may be formed on the other surface of the base member, and provided with a plurality of micro-setae that allow parts of the other surface to be coupled to each other when the parts of the other surface overlap each other.

In one embodiment associated with the present disclosure, the base part may include a plurality of patches. The base part may further include a supporter having the extension part and provided with accommodation portions for accommodating the plurality of patches therein.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a method for a skin rejuvenation, the method including adhering a dermal patch on a surface of a skin, wherein the dermal patch includes a skin status sensing unit, a stimulation part and an extension part, sensing the skin status, applying a tensile force to the skin by deforming the extension part based on the skin status, and activating the stimulation part based on the skin status.

In one embodiment associated with the present disclosure, the stimulation part may include a light-emitting unit that is configured to emit light, and an electrode unit that is configured to apply micro-current to the skin. The activating of the stimulation part based on the skin status may further include selecting strength of the light based on the skin status.

In one embodiment associated with the present disclosure, the applying of the tensile force to the skin by deforming the extension part based on the skin status may further include generating an electric signal for deforming the extension part based on the skin status.

The detailed description provides a dermal patch which is adhered on a skin using fine setae inspired from a fine setae structure of the gecko lizard's toes. Accordingly, the dermal patch can be easily adhered on a user-desired portion and avoid a sensitive reaction caused due to an adhesive material by virtue of non-use of an adhesive agent.

Also, a skin reaction may be facilitated using light and micro-current and a tensile force may be applied to the skin by use of an extension part, so as to improve an anti-wrinkle effect.

FIG. 1A is a conceptual view of a dermal patch in accordance with one embodiment, viewed from one direction.

FIG. 1B is a conceptual view illustrating the dermal patch changeable (deformable) in size.

FIG. 1C is a conceptual view illustrating the dermal patch adhered on a person's face.

FIG. 2 is a conceptual view illustrating an adhesive structure of a dermal patch for adhering the dermal patch onto a skin.

FIGS. 3A to 3C are conceptual views illustrating a structure of a skin-stimulation part.

FIGS. 4A to 4C are conceptual views illustrating extension parts in accordance with various embodiments.

FIGS. 5A and 5B are conceptual views illustrating arrangement structures of a stimulation part in accordance with different embodiments.

FIGS. 6A and 6B are conceptual views illustrating a dermal patch including a foldable structure.

FIG. 7 is a conceptual view illustrating a structure of a dermal patch in accordance with another embodiment.

Description will now be given in detail according to the exemplary embodiments disclosed herein, with reference to the accompanying drawings. For the sake of brief description with reference to the drawings, the same or equivalent components will be provided with the same reference numbers, and description thereof will not be repeated. A suffix "module" and "unit" used for constituent elements disclosed in the following description is merely intended for easy description of the specification, and the suffix itself does not give any special meaning or function. In describing the present disclosure, if a detailed explanation for a related known function or construction is considered to unnecessarily divert the gist of the present disclosure, such explanation has been omitted but would be understood by those skilled in the art. The accompanying drawings are used to help easily understand the technical idea of the present disclosure and it should be understood that the idea of the present disclosure is not limited by the accompanying drawings.

FIG. 1A is a conceptual view of a dermal patch in accordance with one embodiment, viewed from one direction, FIG. 1B is a conceptual view illustrating the dermal patch changeable (deformable) in size, and FIG. 1C is a conceptual view illustrating the dermal patch adhered on a person's face.

As illustrated in FIGS. 1A to 1C, the dermal patch 100 may be implemented as a patch having a preset thickness to be adhered (attached) onto a person's skin. One surface of the dermal patch 100 is closely adhered onto a user's skin and the other surface is externally exposed.

The dermal patch 100 is preferably formed large enough to cover one region of the user's face, but the size of the dermal patch 100 is not limited to this. The dermal patch 100 according to the present disclosure is configured to be changeable in size while being adhered on the skin. Or, the dermal path 100 may be made of a material which is deformable by an external force that the user applies.

Accordingly, a base part 101 of the dermal patch 100 is preferably made of a material which is deformable by an external force and restored to its original state. Examples of the material forming the base part 101 may include natural rubber, polyisoprene, polysiloxane, polybutadiene, polyacrylamide, polyvinyl alcohol, polyacrylic acid, polyethylene, polypropylene, all of which are polymers, and copolymer thereof, polyester, fluororesin, polyvinyl pyrrolidone, carboxyvinylpolymer, polyacrylic acid and copolymer thereof, poly(hydroxyl methyl cellulose), poly(hydroxyl methyl alkylmethacrylate) and copolymer thereof, poly(ethylene glycoloxide) and copolymer thereof, polyethylene glycol-polycaprolactone multi-block copolymer, polycaprolactone and copolymer thereof, polylactide and copolymer thereof, polyglycolide and copolymer thereof, poly(methyl methacrylate) and copolymer thereof, polystyrene, polydimethylsiloxane (PDMS) and copolymer thereof, and the like.

Although not illustrated, the dermal patch 100 may further include a sensing unit which is provided on the one surface thereof to sense a status of a skin. A controller equipped in the dermal patch 100 may control a stimulation part and an extension part based on the skin status sensed by the sensing unit.

The controller may set strength of light emitted from a light-emitting unit or set an amount and a size of micro-current based on the skin status sensed by the sensing unit.

Also, the dermal patch 100 may further include a memory which stores the user's skin status sensed by the sensing unit, and control information which is generated according to the skin status. Also, the sensing unit may generate status information related to changes in the skin due to the operation of the dermal patch 100. The status information may then be stored in the memory. Accordingly, the dermal patch can be controlled to appropriately operate according to changes in the state information.

That is, the dermal patch 100 may be controlled to perform various functions based on the user's skin status sensed.

The dermal patch 100 according to the present disclosure may be closely adhered onto the skin based on an adhesive structure provided on its one surface, and change in shape when being adhered onto the skin such that a force can be applied to the skin. Also, although not illustrated in detail in FIG. 1A, the dermal patch 100 may include a light-emitting unit 120 and an electrode unit 130 which are provided on one surface thereof so as to apply light and electric stimulus to the skin. The dermal patch 100 may be adhered on the user's skin and unwrinkle the skin in a manner of being deformed. Also, the dermal patch 100 may facilitate skin rejuvenation using such light and electric stimulus. Hereinafter, a detailed structure of the dermal patch 100 according to various embodiments will be described.

FIG. 2 is a conceptual view illustrating an adhesive structure of a dermal patch for adhering the dermal patch onto a skin. The dermal patch 100 according to the present disclosure may have an adhesive structure 110 which is implemented as a microstructure formed on one surface of a base part 101so as to be closely adhered on the skin. The microstructure according to one embodiment includes fine protrusions inspired by a biological adhesive system.

For example, the fine protrusions are realized by replicating setae on the gecko lizard's toes. On the gecko lizard's toes are present thin, long protrusions, namely, spine hairs or setae, each of which has a diameter corresponding to merely about 1/100 to 1/1000 of a thickness of a human hair. Van derWaal's force (i.e., a force that electrically-neutral molecules attract each other when located very closely), is applied between the fine setae and a wall surface. Accordingly, a force of about 30 Ncm-2 is applied to a skin surface such that the dermal patch 100 can be adhered on the skin surface. A force generated by each seta is extremely weak, but if such force is gathered in plural, it may result in generation of an adhesive force which is strong enough to sustain a huge weight.

Here, the fine protrusions may be made of a nature-inspired material which can be adhered on the skin of the user, and may not be limited to the inspired shape from the setae formed on the gecko's toes. That is, the adhesive structure 110 is made of a nature-inspired material which can be adhered on the user's skin without a separate adhesive member.

As illustrated in (a) and (b) of FIG. 2, the adhesive structure 110 may be realized into a shape similar to the spatula shape of the fine setae, present on the gecko's toes. The dermal patch 100 may be fixed on the skin surface by negative pressure which is generated between an arcuate groove 112 of each of adhering portions 111 of the dermal patch 100 and the skin surface when the adhering portions 111 are stuck on the skin. The adhesive structure 110 is configured with a plurality of adhesion units 110'. Each of the adhesion units 110' may include nine adhering portions 111. Each adhering portion 111 may protrude by a preset length from one surface of the dermal patch 100, but may not be limited to this. The adhering portion 111 may also be formed in a manner of protruding from a surface of the base member 101 into a spatula shape. The number of adhering portions 111 formed on the one surface of the dermal patch 100 may not be limited to that illustrated in the drawings.

A surface, which has a hierarchical structure that nanometer-sized fine protrusions are collected to form a micrometer-sized protrusion bundle, regardless of material characteristics, such as the gecko lizard, may have a superhydrophobic characteristic, minimize contamination, and facilitate removal of contaminants, which may result in extension of an adhesion characteristic. If such structural characteristic is used, the contamination of the dermal patch can be minimized and washing thereof can be facilitated, in spite of repetitive contacts (adhesion).

Hereinafter, a deformation (change in shape) of the adhesive structure when the dermal patch 100 changes in shape will be described with reference to (b) and (c) of FIG. 2. In view of a material characteristic of the base part 101 of the dermal patch 100, the base part 101 is configured to be deformable on one region thereof. For example, description will be given of a case where a first region A1 which is a central region of the dermal patch 100 is deformed by a deformation member or an external force. In response to the deformation, a distance between the adhesion units 110' increases based on the first region A1. That is, the first region A1 extends, and the adhesion unit 110' is not formed on the first region A1.

Or, an area of the base part 101 evenly increases in response to the extension of the first area A1. Accordingly, a distance between the adhesion units 110' may increase. For example, when each adhesion unit 110' is fixedly adhered on a skin and the skin has wrinkles to correspond to the first area A1, the wrinkles may be removed (unwrinkled) in response to the extension of the first area A1. Here, the plurality of adhesion units 110' may apply a tensile force to the skin by being adhered on skins surrounding the wrinkles.

Accordingly, the skin expanded by the tensile force may be lifted. Also, while providing the tensile force to the wrinkles by applying a force to the skin, the dermal patch 100 may cover the skin surface in a manner of being adhered thereon. Hence, tranepidermal water loss (TEWL) can be minimized, thereby supplementing water to the skin. Here, the TEWL refers to a quantity of water which is evaporated from a surface of the skin. Also, it may be an index indicating an abnormality of a function of a skin barrier, and an excessive loss of water may bring about a dry skin symptom.

The dermal patch 100 according to the present disclosure may further include a skin stimulation part, which includes a light-emitting unit 120 which is provided on the base part 101 having the adhesive structure 110 to emit light toward the skin surface, and an electrode unit 130 that is configured to apply micro-current to the skin. FIGS. 3A to 3C are conceptual views illustrating a structure of a skin-stimulation part.

As illustrated in FIG. 3A, the skin stimulation part is provided substantially on the same surface as one surface of the dermal patch 100 having the adhesive structure 110. For example, the skin stimulation part may be disposed between the adhesion units 110' or between the adjacent adhering portions 111.

As illustrated in FIG. 3B, the light-emitting unit 120 includes a plurality of light-emitting diode (LED) chips, and is mounted in the dermal patch 100 to emit light. The plurality of LED chips have a preset arrangement on the base part 101.

The LED chips are driven to emit light having a specific wavelength based on a user's setting or a control command. For example, the LED chips may be configured with three LED chips to selectively emit light having a first wavelength of about 630 nm, light having a second wavelength of about 830 nm, and light having a third wavelength of about 415 nm.

The light having the first wavelength may facilitate a collagen synthesis of the skin or a reduction of metalloproteinase (MMP), so as to affect skin rehabilitation. The light having the second wavelength may have good effects for both of skin rehabilitation and treatment of injuries, and the light having the third wavelength may reduce atopic eczema and pimple inflammation.

The light-emitting unit 120 may include a conductive coating layer for supplying current to the plurality of LED chips. The conductive coating layer may preferably be formed of one of silver, copper, nickel, aluminum and carbon. The conductive coating layer may be configured as a flexible printed circuit board, formed by printing a conductive ink, which is formed of at least one of those materials, onto a printed circuit board or processing a conductive metal into a predetermined pattern in an etching manner.

While the dermal patch 100 is adhered on the surface of the skin by the adhering portions 111, the light-emitting unit 120 stimulates the skin by emitting light having one of the first to third wavelengths.

The dermal patch 100 according to the present disclosure further includes the electrode unit 130 mounted in the base part 101. The electrode unit 130 applies micro-current to the skin and stimulates cells configuring the skin. In more detail, the electrode unit 130 applies the micro-current to wound tissues or cells of the skin to generate adenosine triphosphate (ATP), protein and the like, and to facilitate ion exchange between cells and absorption of nutriments. This may result in a recover of homeostasis of the cells and an increase in generation of collagen.

The electrode unit 130 is embedded as a preset pattern in one surface of the base member 101. FIG. 3C is a sectional view of one region cut along the line A-A. As illustrated in FIG. 3C, the electrode unit 130 may include a printed thin micro-battery, which is connected to anode and cathode which come in contact directly with the skin surface. A potential difference between electrodes generates current which flows from the anode to the cathode through the skin. This may allow an electromotive force to be generated on charged active cosmetic or pharmaceutical ingredients on the skin surface.

The dermal patch 100 according to the present disclosure further includes an extension part which provides a force such that the dermal patch 100 changes in shape according to a user's skin status. Hereinafter, the structure of the extension part will be described.

FIGS. 4A to 4C are conceptual views illustrating extension parts in accordance with various embodiments. An extension part disclosed herein deforms (changes a shape of) the dermal patch 100 based on an external force or a control command applied by a user. The controller may generate an electric signal for deforming the extension part based on the skin status sensed by the sensing unit.

As illustrated in FIG. 4A, the dermal patch 100 is provided with a first extension part 141 along an edge region of the base part 101. The first extension part 141 may be configured as a deformation sensor which is provided along the edge region and increases and decreases in length based on an electric signal. The deformation sensor generates an electric signal when a deformation of a shape thereof is sensed, or is deformed in shape according to an applied electric signal.

For example, the first extension part 141 is changeable in length in response to the electric signal, and an entire area of the dermal patch 100 extends in response to the length-change of the first extension part 141. As the dermal patch 100 adhered on the skin extends, one region of the skin on which the dermal patch 100 has been adhered also extends. This may result in a generation of a wrinkle reduction effect.

As illustrated in FIG. 4B, the dermal patch 100 includes first and

second base members

101a and 101b, and a second extension part 142 for connecting the first and

second base members

101a and 101b to each other.

The second extension part 142 may be provided on one surface of the dermal patch 100 which is adhered on the skin, but may not be limited to this. The second extension part 142 may also be provided on a region which is exposed when the dermal patch 100 is adhered on the skin. As illustrated in (a) and (b) of FIG. 4B, the first and

second base members

101a and 101b are coupled by the second extension part 142 so as to be adjacent to each other.

As illustrated in (c) of FIG. 4B, the second extension part 142 may be configured as a deformation sensor which is deformable in length in response to an electric signal. The second extension part 142 may extend in length based on an external force or a control command. As the second extension part 142 extends in length, a distance between the first and

second base members

101a and 101b may increase.

Therefore, a tensile force is applied to the skin located between the first and

second base members

101a and 101b and thus the skin may be unwrinkled.

Although not illustrated in detail, the second extension part 142 may not be provided with the adhering portions and the like for adhering the dermal patch 100 on the skin. According to this embodiment, the dermal patch 100 may be adhered in a manner that a region of the skin with the wrinkles is located between the first and

second base members

101a and 101b. Then, the second extension part 142 may be controlled to reduce (or remove) the wrinkles.

As illustrated in FIG. 4C, the dermal patch 100 includes a third extension part 143 which extends the dermal patch 100 in response to a physical force. The third extension part 143 may include first and

second members

143a and 143b and elastic members 143c.

The first and

second members

143a and 143b may be provided along an edge region of the base part 101 of the dermal patch 100 in a manner of facing each other. The first and

second members

143a and 143b are configured to be movable by an external force applied by a user, and protrudes from the other surface of the base member 101.

The elastic members 143c may be configured to elastically support the first and

second members

143a and 143b. An elastic force of the elastic member 143c may be set by a material of the base part 101.

While the first and

second members

143a and 143b of the dermal patch 100 are adhered on the skin, when the dermal patch 100 extends in a manner that the first and

second members

143a and 143b are spaced apart from each other by the user's external force, wrinkles and the like formed on the skin may be removed (or unwrinkled). The dermal patch 100 may maintain the spaced state between the first and

second members

143a and 143b in terms of the property of the material of the base part 101. The dermal patch 100 may be restored to its original shape by the elastic force of the elastic members 143c when the dermal patch 100 is detached from the skin.

FIGS. 5A and 5B are conceptual view illustrating arrangement structures of a stimulation part in accordance with different embodiments.

As illustrated in FIG. 5A, the electrode unit 130 is provided on a central region of the dermal patch 100, and the adhesion units 110' are provided on the dermal patch 100 to surround the electrode unit 130. That is, the electrode unit 130 may not overlap the adhesion units 110' and come in contact directly with the skin. Therefore, the micro-current generated from the electrode unit 130 may be transferred to the skin more effectively.

Also, when the base part is configured with a plurality of movable members, the electrode unit 130 may also be configured with a plurality of electrode members. According to this embodiment, the light-emitting unit 120 of the dermal patch 100 may be located between the adhesion units 110'.

As illustrated in FIG. 5B, the dermal patch 100 includes first to

third base members

101a, 101b and 101c. The third base member 101c may further include a deformation sensor which is deformable in length in response to an electric signal.

A distance between the first and

second base members

101a and 101b may increase or decrease based on the third base member 101c. The plurality of adhesion units 110' are provided on the first and

second base members

101a and 101b. Accordingly, when the third base member 101c is deformed while the dermal match 100 is adhered, the skin located between the first and

second base members

101a and 101b extends in response to the deformation of the third base member 101c.

The electrode unit 130 is provided on the third base member 101c. That is, the electrode unit 130 may come in contact directly with the skin without overlapping the adhesion units 110', such that the micro-current can be transferred to the skin more effectively.

FIGS. 6A and 6B are conceptual views illustrating a dermal patch having a foldable structure.

As illustrated in FIG. 6A, the dermal patch 100 further includes a folding guide portion 160 which is provided on the other surface of the base member 101. The folding guide portion 160 may be formed in a shape of a groove extending in one direction, such that one region of the dermal patch 100 can be maintained in an overlapped state with another region by a user's external force.

That is, while the dermal patch 100 is adhered on the skin, when the overlapped state of the dermal patch 100 is maintained by the folding guide portion 160, the electrode unit and the adhesive structure are externally exposed. The shape of the folding guide portion 160 may not be limited to that illustrated in the drawing, and may be formed differently according to the shape of the dermal patch 100 and a portion of the skin on which the dermal patch 100 is adhered.

The user may adjust the size of the dermal patch 100 using the folding guide portion 160, so as to adhere the dermal patch 100 on a desired region of the user's skin.

As illustrated in FIG. 6B, a coupling portion 170 is formed on the other surface of the dermal patch 100. The coupling portion 170 includes a plurality of fine protrusions which are formed by replicating setae on the gecko's toes. Those fine protrusions may be maintained in a coupled state when they are arranged to face each other. Accordingly, when parts of the other surface of the dermal patch 100 are coupled to each other in a facing manner, the dermal patch can be used in a folded state.

This may allow the user to adjust the size of the dermal patch to be appropriate for a desired region of the skin by folding the dermal patch to any region.

FIG. 7 is a conceptual view illustrating a structure of a dermal patch in accordance with another embodiment. A dermal patch according to another embodiment disclosed herein includes a supporter 181, and a pair of patches 182 fixed to the supporter 181. The number of the patches 182 provided on the supporter 181 may not be limited to the illustrated embodiment.

The supporter 181 has a shape extending in one direction. The supporter 181 may be configured to be deformable in length based on an external force or a control command. The supporter 181 is provided with accommodating portions 183 in which the patches 182 are fixed.

Although not illustrated, the dermal patch may further include, on one surface of each of the patches, an adhesive structure 110 (refer to FIGS. 2 and 3) which is adhesive on the skin, a light-emitting unit 120 (refer to FIGS. 2 and 3) which emits light to the skin, and an electrode unit 130 (refer to FIGS. 2 and 3) which applies micro-current, duplicate description of which will be omitted.

The user may adhere the patches 182 on the skin for use. When it is required to provide a tensile force to the skin, the user may fix the patches 182 on the supporter 181 and apply a force to extend the skin.

The configurations and methods of the dermal patch may not be limitedly applied, but such embodiments may be configured by a selective combination of all or part of the embodiments so as to implement many variations.

Those embodiments disclosed herein illustrate a dermal patch capable being adhered on a skin using a micro-setae structure. The dermal patch includes a structure of providing light and micro-current while being adhered on the skin, and thus can be applied to various associated industrial fields.

Claims

A dermal patch comprising:

a base part which is configured as a deformable elastic member;

an adhesive structure that is provided on one surface of the base part and has a micro-setae structure to be adhered on a skin;

a stimulation part that is provided on the one surface of the base part and configured to apply at least one of light and micro-current to the skin; and

an extension part that is configured to apply a physical force to the skin by deforming the base part while the dermal patch is adhered on the skin.
The dermal patch of claim 1, wherein the base part comprises first and second base members that are separated from each other, and the extension part is located between the first and second base members, and

wherein a distance between the first and second base members increases in response to a deformation of the extension part.
The dermal patch of claim 2, wherein the extension part is configured as a deformation sensor which changes in shape in response to an electric signal.
The dermal patch of claim 3, wherein the stimulation part comprises:

a plurality of light-emitting diode (LED) units that are arranged in a preset manner on the one surface of the base part to emit light having a preset wavelength; and

an electrode unit that is configured to apply the micro-current to a surface of the skin.
The dermal patch of claim 1, wherein the extension part is formed along an edge of the base part.
The dermal patch of claim 5, wherein the extension part is configured as a deformation sensor that is changeable in length in response to an electric signal for changing an area of the base part.
The dermal patch of claim 5, wherein the extension part comprises a plurality of extending members that extend to be spaced apart from each other by an external force, and elastic members that are provided between the plurality of extending members for elastic support therebetween.
The dermal patch of claim 7, wherein the extending members are formed in a manner of protruding from the other surface of the base part.
The dermal patch of claim 1, wherein the adhesive structure comprises a plurality of adhesion units arranged into a preset pattern, each of the plurality of adhesion units comprising a plurality of adhering portions each having a groove for generating negative pressure on the surface of the skin.
The dermal patch of claim 9, wherein the micro-setae are formed in a spatula shape.
The dermal patch of claim 9, wherein the extension part is configured as a deformation sensor deformable by an electric signal, and

wherein the extension part is provided between the adhesion units so as to extend a distance between the adhesion units.
The dermal patch of claim 1, wherein the stimulation part comprises a plurality of LED units that are arranged on the one surface in a preset manner so as to emit light having a preset wavelength.
The dermal patch of claim 12, wherein the stimulation part further comprises an electrode unit that is configured to apply the micro-current to the surface of the skin.
The dermal patch of claim 1, further comprising a guide portion that is provided on the base part and configured to allow the base part to be foldable.
The dermal patch of claim 14, wherein the guide portion is configured as a guide groove formed on the other surface of the base part.
The dermal patch of claim 14, wherein the guide portion is formed on the other surface of the base member, and provided with a plurality of micro-setae that allow parts of the other surface to be coupled to each other when the parts of the other surface overlap each other.
The dermal patch of claim 1, wherein the base part comprises a plurality of patches, and

wherein the base part further comprises a supporter having the extension part and provided with accommodation portions for accommodating the plurality of patches therein.
A method for a skin rejuvenation, the method comprising:

adhering a dermal patch on a surface of a skin, the dermal patch comprising a skin status sensing unit, a stimulation part and an extension part;

sensing the skin status;

applying a tensile force to the skin by deforming the extension part based on the skin status; and

activating the stimulation part based on the skin status.
The method of claim 18, wherein the stimulation part comprises a light-emitting unit that is configured to emit light, and an electrode unit that is configured to apply micro-current to the skin, and

wherein the activating of the stimulation part based on the skin status further comprises:

selecting a wavelength of the light based on the skin status.
The method of claim 19, wherein the applying of the tensile force to the skin by deforming the extension part based on the skin status further comprises:

generating an electric signal for deforming the extension part based on the skin status.