CN216366325U - Skin treatment device - Google Patents

Abstract

Embodiments of the present disclosure provide a skin treatment device. The skin treatment device comprises: a first electrode-pair assembly (410) comprising a first electrode (110) and a second electrode (120) adapted to apply a first current to the skin, wherein the first electrode (110) and the second electrode (120) are arranged adjacent to each other and form a first current loop; at least one second electrode pair assembly (430) comprising a third electrode (130) and a fourth electrode (140) adapted to apply a second current to the skin, wherein the third electrode (130) and the fourth electrode (140) are arranged adjacent to each other and form a second current loop; and a power isolator (420) configured to electrically isolate a first electrical power powering the first electrode pair assembly (410) and a second electrical power powering the second electrode pair assembly (430) from each other. According to the skin treatment device of the present disclosure, the isolation of the power supply circuits of the different electrode pair assemblies is improved.

Description

Skin treatment device

Technical Field

Embodiments of the present invention relate to a skin treatment device.

Background

The human skin, especially the facial skin, is flaccid and drooped due to aging, excessive pressure and other reasons. The skin treatment device comprises electrodes adapted to be applied to the skin of a human body to achieve a skin rejuvenation and/or skin cosmetic effect by applying current pulses to the skin through the electrodes. The operational performance of conventional skin treatment devices is however not satisfactory. Further improvements in the performance of conventional skin treatment devices are desired.

Disclosure of Invention

In view of the above, it is an object of the embodiments of the present disclosure to provide a skin treatment apparatus capable of improving the operation performance of an electrode pair.

According to a first aspect of the utility model, a skin treatment device is provided. The skin treatment device comprises: a first electrode pair assembly comprising a first electrode and a second electrode adapted to apply a first current to the skin, wherein the first electrode and the second electrode form a first current loop; at least one second electrode pair assembly comprising a third electrode and a fourth electrode adapted to apply a second current to the skin, wherein the third electrode and the fourth electrode form a second current loop; and a power isolator configured to electrically isolate a first electrical power supplying the first electrode pair assembly and a second electrical power supplying the second electrode pair assembly from each other.

Through the power supply isolator, power supply loops of different electrode pair assemblies are respectively and independently grounded, and no path for directly transmitting current exists among the power supply loops, so that the current is effectively ensured to only flow between the corresponding electrode pairs, and the current is prevented from flowing through a sensitive area of the skin.

According to an embodiment of the present disclosure, the skin treatment device further comprises: a first dielectric layer for covering a first area of skin, the first dielectric layer electrically connected to the first electrode and the second electrode for delivering a first electrical current to the first area; and a second dielectric layer for covering a second area of the skin, the second dielectric layer being electrically connected to the third and fourth electrodes for delivering a second current to the second area, the second dielectric layer being separately disposed from the first dielectric layer.

According to one embodiment of the present disclosure, each of the first dielectric layer and the second dielectric layer includes: an insulating layer, a pair of electrode films disposed on a second surface of the insulating layer for electrically connecting with the first electrode and the second electrode in the first electrode pair assembly, or electrically connecting with the third electrode and the fourth electrode in the second electrode pair assembly; and a conductive gel attached to surfaces of the pair of electrode films.

According to one embodiment of the present disclosure, the first dielectric layer has a first profile matching a T-shaped region of facial skin and the second dielectric layer has a second profile matching a U-shaped region of facial skin.

According to one embodiment of the present disclosure, the power isolator includes an isolation barrier including a transformer or inductors coupled to each other.

According to one embodiment of the present disclosure, the power isolator includes a power converter coupled to a power source configured to convert a supply power of the power source, wherein the isolation barrier is coupled to the power converter and configured to electrically isolate the electrical power of the power source from the electrical power output to the respective electrode pair assembly.

According to one embodiment of the disclosure, the first electrode pair assembly comprises a first output drive assembly, the second electrode pair assembly comprises a second output drive assembly, the skin treatment device further comprises a controller configured to communicate with the first output drive assembly and the second output drive assembly, respectively, to cause the first output drive assembly to output a first current and to cause the second output drive assembly to output a second current, the first current and the second current comprising pulses, the skin treatment device further comprises a power supply, wherein the power supply powers the first output drive assembly, the second output drive assembly, and the controller, respectively, wherein the first output drive assembly and the second output drive assembly are power isolated via the power supply isolator. According to one embodiment of the present disclosure, the skin treatment device further comprises a signal isolator configured on a signal line between at least one of the first and second output drive components and the controller such that communication signals between the at least one output drive component and the controller are signal isolated from each other, wherein the signal isolator comprises a digital isolator or an optical coupler. Through the signal isolator, the electrical isolation of the control signal can be realized. Due to the presence of the signal isolator, the digital signal of the controller is able to pass signals across different electrical power domains even though the controller has a common ground with the power sources of different drive components.

According to one embodiment of the present disclosure, a skin treatment device includes a plurality of power isolators and wherein each of the first and second output drive assemblies is electrically isolated via a respective power isolator.

According to a second aspect of the utility model, a skin treatment device is provided. The skin treatment device comprises: a first power supply; a first electrode pair assembly comprising: a first electrode and a second electrode adapted to receive electrical power from the first power source, wherein the first electrode and the second electrode form a current loop; a first output driving assembly adapted to output a pulse signal to the first and second electrodes; and a first controller configured to communicate with the first output drive assembly to cause the first output drive assembly to output a corresponding current pulse; at least one second power supply electrically isolated from the first power supply; at least one second electrode pair assembly comprising: a third electrode and a fourth electrode adapted to receive electrical power from a respective second power source of the at least one second power source, wherein the third electrode and the fourth electrode form a current loop; a second output driving assembly adapted to output a pulse signal to the third and fourth electrodes; and a second controller configured to communicate with the second output drive assembly to cause the second output drive assembly to output a corresponding current pulse; and a signal isolator disposed between the first controller of the first electrode pair assembly and the second controller of the second electrode pair assembly.

According to a third aspect of the utility model, a skin treatment device is provided. The skin treatment device comprises: a first power supply; a first electrode pair assembly comprising: a first electrode and a second electrode adapted to receive electrical power from the first power source, wherein the first electrode and the second electrode form a current loop; and a first output drive component adapted to output a pulsed signal to the first and second electrodes; at least one second power supply electrically isolated from the first power supply; at least one second electrode pair assembly comprising: a third electrode and a fourth electrode adapted to receive electrical power from a respective second power source of the at least one second power source, wherein the third electrode and the fourth electrode form a current loop; and a second output driving assembly adapted to output a driving current to the third and fourth electrodes; a controller configured to draw electrical power from the first power source and communicate with the first and respective second output drive assemblies to cause the first and respective second output drive assemblies to output respective drive currents; and a signal isolator disposed between the controller and the respective second output drive component.

According to a fourth aspect of the present disclosure, a skin treatment device is provided. The skin treatment device comprises: a first electrode pair assembly comprising a first electrode and a second electrode adapted to apply a first current to the skin, wherein the first electrode and the second electrode form a first current loop; and at least one second electrode pair assembly comprising a third electrode and a fourth electrode adapted to apply a second current to the skin, wherein the third electrode and the fourth electrode form a second current loop. The first electrode-pair assembly and the second electrode-pair assembly are configured to: during operation of the respective electrode pair assemblies, the respective current pulses are output at respective time periods that are different from each other, and the respective time periods do not overlap with each other.

According to one embodiment of the present disclosure, the first electrode-pair assembly and the second electrode-pair assembly are configured to: during a period in which the respective electrode pair assembly ceases operation, the respective output drive assembly of the respective electrode pair assembly is disconnected from the respective electrode pair of the respective electrode pair assembly. According to one embodiment of the present disclosure, the first electrode-pair assembly and the second electrode-pair assembly are configured to: during a period in which the respective electrode-pair assembly ceases operation, a zero current flows between the respective output drive assembly of the respective electrode-pair assembly and the respective electrode pair of the respective electrode-pair assembly.

According to the skin treatment device of the embodiment of the disclosure, the electric power isolation between different electrode pairs can be improved, and the operation performance of the skin treatment device is further improved.

Drawings

A back-up protector for a surge protector according to an embodiment of the present disclosure is described by referring to the accompanying drawings, in which:

fig. 1 shows a schematic structural view of a skin treatment device of an embodiment of the present disclosure;

FIG. 2 shows a schematic diagram of a processing electrode according to an embodiment of the present disclosure, in which a desired flow direction of current between a pair of electrodes is shown;

FIG. 3 shows a schematic view of a processing electrode showing an undesired flow direction of current between a pair of electrodes, according to an embodiment of the present disclosure;

fig. 4 shows a schematic view of a skin treatment device according to a first embodiment of the present disclosure;

fig. 5 shows a schematic view of a skin treatment device according to a second embodiment of the present disclosure;

fig. 6 shows a schematic view of a skin treatment device according to a third embodiment of the present disclosure;

fig. 7 shows a schematic view of a skin treatment device according to a fourth embodiment of the present disclosure; and

fig. 8 is a schematic diagram of driving timing of an electrode pair according to an embodiment of the present disclosure.

Detailed Description

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

In describing embodiments of the present disclosure, the terms "include" and its derivatives should be interpreted as being inclusive, i.e., "including but not limited to. The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first," "second," and the like may refer to different or the same object. Other explicit and implicit definitions are also possible below.

The inventive concepts according to embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the skin treatment device of the embodiment of the present disclosure includes a treatment electrode 10 and a power supply-driving unit 20. The treatment electrode 10 is configured to receive electric power and control signals from the power supply-driving unit 20 to apply an electric current at the skin surface. The power-drive unit 20 is configured to supply power to the treatment electrode 10. In some embodiments, the processing electrode 10 may include a plurality of electrode pairs. In the illustrated embodiment, the processing electrode 10 includes two electrode pairs 110, 120 and 130 and 140, each of which may be disposed on a first surface of an insulating layer 150. It should be understood that the number of electrode pairs is merely exemplary and that the processing electrode 10 may include other numbers of electrode pairs. It should be understood that the current applied at the electrodes may take various forms depending on the type of treatment. In some embodiments, the current may be in the form of pulses, which may include, for example, PWM or other suitable forms of pulses.

The processing electrode 10 may be implemented in various forms. Fig. 2 and 3 show schematic structural views of an exemplary processing electrode 10 according to an embodiment of the present disclosure. It is to be understood that such configurations are merely illustrative and not restrictive. The skin treatment device is, for example, an iontophoretic drug delivery device. Fig. 2 and 3 show that the skin treatment device for example comprises a first dielectric layer for covering a first area of skin (for example and without limitation a T-shaped area of facial skin) and a second dielectric layer for covering a second area of skin (for example and without limitation a U-shaped area of facial skin). In some embodiments, the first dielectric layer has a first profile matching a T-shaped region of facial skin and the second dielectric layer has a second profile matching a U-shaped region of facial skin. Each of the first dielectric layer and the second dielectric layer includes, for example: an insulating layer 150, a pair of electrode films, and a conductive gel attached to surfaces of the pair of electrode films. Each electrode pair may be detachably coupled to a connector disposed on the first surface of the insulating layer 150. The pair of electrode films is disposed on the second surface of the insulating layer 150, and the pair of electrode films may be electrically connected to the first electrode 110 and the second electrode 120 in the first electrode pair assembly 410 or to the third electrode 130 and the fourth electrode 140 in the second electrode pair assembly 430 via a connector. Thus, the first dielectric layer may be electrically connected to the first electrode 110 and the second electrode 120 to deliver a first current to a first region of skin covered by the first dielectric layer (e.g., a T-shaped region of facial skin), and the third electrode 130 and the fourth electrode 140 may be electrically connected through the second dielectric layer to deliver a second current to a second region of skin covered by the second dielectric layer (e.g., a U-shaped region of facial skin). In addition, the second dielectric layer is provided separately from the first dielectric layer, thereby further enabling the first current and the second current applied to the skin not to flow through the sensitive region (e.g., the eye region). The second surface of the insulating layer 150 may include a pair of electrode films 110a, 120a and 130a, 140a for each electrode pair of the processing electrodes 10. The pair of electrode films 110a, 120a and 130a, 140a may be electrically connected to the pair of electrodes 110, 120 and 130 and 140, respectively. The electrode films 110a, 120a and 130a, 140a may be flexible electrode films, for example, low resistance conductive films, conductive carbon films, and carbon-based conductive films. The flexible conductive electrode film is made of polyethylene mixed by, for example, high-molecular superconducting nano carbon black, a curing agent, an additive, and the like. In some embodiments, the pair of electrode films 110a, 120a and 130a, 140a may include a conductive gel. The electrocoagulation colloid may include, for example: a matrix and an additive. The conductive gel is formed via a process of cross-linking and curing. The electrically conductive gel may, for example, comprise at least one or more of the following components: polyethylene glycol, polyvinyl alcohol, polyhydroxyethyl methacrylate, polyacrylic acid, polymethacrylic acid, gelatin and alginic acid. Experiments show that the gel formed by the components can form a macromolecular crosslinking skeleton structure with certain strength. In some embodiments, the electrically conductive gel further comprises an active agent that is introducible into the skin of the user. It will be appreciated that this is merely an exemplary configuration of the processing electrode and that the processing electrode may be implemented in any other suitable form. In some embodiments, the treatment electrode may not include an electrode film, but may apply current directly to the skin. In other embodiments, the treatment electrode may not include a conductive gel, but rather the electrode membrane is used to apply current directly to the skin. A detailed description thereof will be omitted in view of these points which are not the gist of the present disclosure.

In the illustrated embodiment, the treatment electrode 10 may be formed in a shape that matches the shape of the area of skin to be treated. For example, the treatment area of the treatment electrode 10 needs to be kept away from sensitive parts of the skin. For the face, for example, the eye region, the nerve region around the eye, and the like. In the case where the processing electrode 10 includes a plurality of electrode pairs, a current loop may be formed between the processing electrode pairs of different pairs, which may cause damage to sensitive portions.

As shown in fig. 2, during the operation of the processing electrode 10 shown in (a), the directions of currents applied to the electrode pair 110, 120 and the electrode pair 130, 140 are the same, and it is necessary that the current applied to the electrodes 110, 120 is in the direction of arrow a between the electrode films 110a, 120a, and the current applied to the electrodes 130, 140 is in the direction of arrow B between the electrode films 130a, 140 a. During operation of the processing electrode 10 shown in (b), the directions of currents applied to the electrode pair 110, 120 and the electrode pair 130, 140 are different, and it is necessary that the current applied to the electrodes 110, 120 is in the direction of arrow C between the electrode films 110a, 120a, and the current applied to the electrodes 130, 140 is in the direction of arrow D between the electrode films 130a, 140 a.

Fig. 3 shows a situation where avoidance is desired. As shown in fig. 3, the currents applied to the electrode pairs 110, 120 and the electrode pairs 130, 140 flow between the different electrode pairs, and as indicated by arrows E, the currents may flow between the electrode films 110a, 130a, and as indicated by arrows F, the currents may flow between the electrode films 120a, 140 a. This pattern of current flow may damage sensitive areas of the skin, such as the eye and nerves surrounding the eye in the illustrated embodiment.

According to an embodiment of the present disclosure, there is provided a skin treatment device comprising a power isolator configured to galvanically isolate electrical power powering different pairs of electrodes from each other to ensure that current inputs and outputs between respective pairs of electrodes return to respective independent grounds and that there is no path for respective pairs of electrodes to carry current directly to each other.

Fig. 4 shows a schematic view of a skin treatment device 400 according to a first embodiment of the present disclosure. As shown, the skin treatment device 400 can include a first electrode pair assembly 410 and a second electrode pair assembly 430. The first electrode-pair assembly 410 may include a first electrode 110 and a second electrode 120 adapted to apply a first current to the skin, wherein the first electrode 110 and the second electrode 120 form a first current loop. The second electrode-pair assembly 430 can include a third electrode 130 and a fourth electrode 140 adapted to apply a second current to the skin, wherein the third electrode 130 and the fourth electrode 140 form a second current loop.

The skin treatment device 400 may also include a power isolator 420. The power isolator 420 is configured to electrically isolate a first electrical power that powers the first electrode pair assembly 410 and a second electrical power that powers the second electrode pair assembly 430 from each other. Thus, the power supply circuits of the first electrode-pair assembly 410 and the second electrode-pair assembly 430 are each independently grounded and have no path for directly carrying current therebetween, effectively ensuring that current flows only between the respective electrode pairs, avoiding current flow through sensitive areas of the skin (as is the case in fig. 3).

In some embodiments, as shown in fig. 4, the power isolator 420 may include an isolation barrier 424. In some embodiments, as shown in fig. 4, power isolator 420 may include a power converter 422. In some embodiments, as shown in fig. 4, the power isolator 420 may include a rectifier-filter 426. It should be understood that this is only an exemplary embodiment. The power isolator may take different forms of implementation depending on the type of power source.

In some embodiments, the power converter 422 may be coupled to the power supply 450 and configured to convert the supply power of the power supply 450. Power converter 422 may be an isolated power converter. The power supply 450 may be a variety of power supplies, and may be of any type without limitation, such as a battery, or an AC-DC adapter. The power converter may be a DC-DC converter, but may also be another type of converter. Isolation barrier 424 may be coupled with power converter 422.

In some embodiments, the isolation barrier is configured to electrically isolate the electrical power of the power source 450 from the electrical power output to the second electrode pair assembly 430. The isolation barrier 424 may include a transformer or inductors coupled to each other. The rectifier-filter 426 is connected with the isolation barrier 424 and is configured to output the electrically isolated electrical power to the respective electrode pair assembly. The quality of the electrical power signal may be improved by the rectifier-filter 426.

In some embodiments, power isolator 420 may also include another power converter 428 to process the electrical power signal to meet the power requirements of the processing electrode.

In some embodiments, as shown in fig. 4, the first electrode pair assembly 410 may include a first output drive assembly 412; the second electrode-pair assembly 430 may include a second output drive assembly 432; the skin treatment device 400 can also include a controller 440, the controller 440 configured to communicate with the first output drive assembly 412 and the second output drive assembly 432, respectively, to cause the respective output drive assemblies to output respective drive currents.

The skin treatment device 400 can further include a common power supply 450, wherein the power supply 450 separately powers the first output drive component 412, the second output drive component 432, and the controller 440, wherein the second output drive component 432 is electrically isolated from the controller 440 via the power isolator 420. With this configuration, the first output driver 412, the second output driver 432, and the controller 440 can be powered separately at the same time, and power isolation can be provided for the first driver 412 and the second output driver 432 at the same time, using only one common power supply 450.

In some embodiments, as shown in fig. 4, the skin treatment device 400 may further include a signal isolator 425 configured on signal lines between the first and second output drive components 412, 432 and the controller 440. Thus, communication signals between the second output drive component 432 and the controller 440 are signal isolated from each other. In some embodiments, the signal isolator 425 may comprise a digital isolator or an optical coupler. Due to the presence of the signal isolator, the digital signal of the controller is able to pass signals across different electrical power domains even though the controller has a common ground with the power sources of different drive components.

It is worth noting that although only one second electrode pair assembly 430 is shown in fig. 4, it should be understood that a plurality of second electrode pair assemblies may be included and may be in a similar configuration to second electrode pair assembly 430. In some embodiments, each electrode pair assembly of the plurality of second electrode pair assemblies includes a power supply isolator 420 to electrically isolate from a power supply and/or a controller. In some embodiments, the plurality of second electrode pair assemblies may similarly include a signal isolator to signal isolate from the controller 440.

Fig. 5 shows a schematic view of a skin treatment device 500 of a second embodiment of the present disclosure. The embodiment of fig. 5 is similar to the embodiment of fig. 4, except that for each electrode pair assembly 510, 530, the drive assembly 510, 530 of each electrode pair includes a power isolator 520, 520' for each electrode pair assembly 510, 530. The power isolators 520, 502 'are configured similarly to the power isolator 420 shown in fig. 4 and each include an isolation barrier 524, 524', the detailed description of which is omitted. In the illustrated embodiment, the drive components 510, 530 of each electrode pair may similarly include signal isolators 525, 525' to signal isolate from the controller 540.

Although only two electrode pair assemblies 510, 530 are shown in the embodiment shown in fig. 5, it should be understood that this is merely exemplary. The skin treatment device 500 may include three or more electrode pair assemblies 510, 530.

In some embodiments, at least two or all of the drive components 510, 530, power isolators 520, 520 'and signal isolators 525, 525' of each electrode pair may be integrated together, for example fabricated as an ASIC application specific integrated circuit, shown in fig. 5, as an isolated output drive module, indicated at reference numeral 590. In some embodiments, the skin treatment device 500 may include a plurality of isolated output drive modules 590.

Fig. 6 shows a schematic view of a skin treatment device 600 according to a third embodiment of the present disclosure. In the schematic shown in fig. 6, each electrode pair assembly of the skin treatment device 600 employs a separate power supply system and includes a respective controller. The output signal of the controller is subjected to signal isolation and synchronization through the digital isolator.

As shown in fig. 6, the skin treatment device 600 may include: a first power supply 640; a first electrode pair assembly 610 that draws electrical power from a first power source 640; a second power supply 650 electrically isolated from the first power supply 640; a second electrode pair assembly 630 that draws electrical power from a second power source 650.

The first electrode-pair assembly 610 may include: a first electrode 110 and a second electrode 120 adapted to receive electrical power from a first power source 640, wherein the first electrode 110 and the second electrode 120 form a current loop; a first output driving component 612 adapted to output a driving current to the first electrode 110 and the second electrode 120; and a first controller 614 configured to communicate with the first output drive assembly 612 to cause the first output drive assembly 612 to output a corresponding drive current.

The second electrode pair assembly 630 may include: a third electrode 130 and a fourth electrode 140 adapted to receive electrical power from a second power source 650, wherein the third electrode 130 and the fourth electrode 140 form a current loop; a second output driving assembly 632 adapted to output a driving current to the third electrode 130 and the fourth electrode 140; and a second controller 634 configured to communicate with the second output drive component 632 to cause the second output drive component 632 to output a corresponding drive current.

The skin treatment device 600 may comprise a signal isolator 625. The signal isolator 625 is disposed between the first controller 614 of the first electrode pair assembly 610 and the second controller 634 of the second electrode pair assembly 630.

According to the skin treatment device 600 of the embodiment of the present disclosure, each electrode pair assembly employs an independent power supply system, which enables power supply isolation; in addition, the output signals of the respective controllers are signal isolated and signal synchronized by the digital isolator, facilitating coordination between the respective controllers of the skin treatment device 600.

Although only two electrode pair assemblies 610, 630 are shown in the skin treatment device 600 of the embodiment shown in fig. 6, it should be understood that this is merely exemplary. The skin treatment device 600 may comprise three or more electrode pair assemblies, the respective controllers of which may be synchronized via the signal isolator 625.

Fig. 7 shows a schematic view of a skin treatment device 700 according to a fourth embodiment of the present disclosure. The skin treatment device 700 shown in fig. 7 is similar to the skin treatment device 600 shown in fig. 6, but the electrode pair assemblies of the skin treatment device 700 employ separate power supply systems but share a single controller.

As shown in fig. 7, the skin treatment device 700 may include: a first power source 740, a first electrode-pair assembly 710, a second power source 750 electrically isolated from the first power source 740, a second electrode-pair assembly 730.

The first electrode-pair assembly 710 may include: a first electrode 110 and a second electrode 120 adapted to receive electrical power from a first power source, wherein the first electrode 110 and the second electrode 120 form a current loop; and a first output driving component 712 adapted to output a driving current to the first electrode 110 and the second electrode 120.

The second electrode pair assembly 730 may include: a third electrode 130 and a fourth electrode 140 adapted to receive electrical power from a second power source 750, wherein the third electrode 130 and the fourth electrode 140 form a current loop; and a second output driving component 732 adapted to output a driving current to the third electrode 130 and the fourth electrode 140.

The skin treatment device 700 can include a controller 720 configured to draw electrical power from a first power source 740 and communicate with the first output drive assembly 710 and the second output drive assembly 730 to cause the first output drive assembly 710 and the second output drive assembly 730 to output respective drive currents.

The dermatological device 700 may also include a signal isolator 725 disposed between the controller 720 and the second output drive component 732.

According to the skin treatment device 700 of the embodiment of the present disclosure, each electrode pair assembly employs an independent power supply system, which enables power supply isolation; in addition, each electrode pair assembly shares the controller, and the synchronization cost is reduced. Each electrode pair assembly is isolated from the controller via a signal isolator 725, enabling signal isolation.

Although only two electrode pair assemblies 710, 730 are shown in the skin treatment device 700 of the embodiment shown in fig. 7, it should be understood that this is merely exemplary. The skin treatment device 700 may include three or more electrode pair assemblies, which may be signal isolated from the controller 720 via a signal isolator 725.

According to an embodiment of the disclosure, in addition to the isolation of the power supply system and/or the signal system of the electrode pairs of the skin treatment device, alternatively or additionally, the timing of the power supply provided to the different electrode pairs during operation of the skin treatment device is set to ensure that there is no current loop between the different electrode pairs.

Fig. 8 illustrates a driving timing diagram of an electrode pair according to an embodiment of the present disclosure. As shown in fig. 8, the first electrode pair output period is different from the second electrode pair output period, and its period is ensured without any overlap, shown as dead time in the figure. The duty ratio may be set according to the skin treatment site for each electrode pair output period. Since the first electrode pair output period is different from the second electrode pair output period, the electrode pairs can be ensured to be electrically isolated from each other.

In the embodiment shown in fig. 8, the first electrode pair output period and the second electrode pair output period are assigned a fixed period of time. It should be understood that this is merely exemplary, and in other embodiments, the first electrode pair output period and the second electrode pair output period are assigned variable time periods to maximize output efficiency.

Further, it should be understood that although in the illustrated embodiment, two electrode pairs are illustrated, this is merely exemplary. The above-described implementation can be similarly applied to the case where three or more electrode pairs are included. Furthermore, although in the illustrated embodiment the drive current is shown in the form of pulses, it should be understood that this is merely exemplary; the drive current may take any other suitable form.

In some embodiments, the output drive assembly is electrically disconnected from its electrodes when the output drive assembly of each electrode pair is not operating, to further improve the electrical isolation performance of the skin treatment device. In some embodiments, when the output drive component of each electrode pair is not operating, zero current flow is ensured even if the output drive component is not electrically disconnected from its electrodes. In this way the electrical isolation properties of the skin treatment device can similarly be further improved.

Those skilled in the art will understand that: the foregoing description is provided for the purpose of illustration and not limitation. It will be apparent to one skilled in the art that the present invention may be practiced in other implementations that depart from these specific details. Moreover, unnecessary detail of known functions and structures may be omitted from the current description so as not to obscure the present invention.

Although specific embodiments have been illustrated and described herein, those of ordinary skill in the art appreciate that any arrangement which is calculated to achieve the same purpose may be substituted for the specific embodiments shown and that the utility model has other applications in other environments. This application is intended to cover any adaptations or variations of the present invention. The following claims should in no way be construed to limit the scope of the utility model to the specific embodiments described herein.

Claims (14)

1. A skin treatment device, comprising:

a first electrode-pair assembly (410) comprising a first electrode (110) and a second electrode (120) adapted to apply a first current to the skin, wherein the first electrode (110) and the second electrode (120) form a first current loop;

at least one second electrode pair assembly (430) comprising a third electrode (130) and a fourth electrode (140) adapted to apply a second current to the skin, wherein the third electrode (130) and the fourth electrode (140) form a second current loop; and

a power isolator (420) configured to electrically isolate a first electrical power powering the first electrode pair assembly (410) and a second electrical power powering the second electrode pair assembly (430) from each other.

2. The skin treatment device of claim 1, further comprising:

a first dielectric layer for covering a first area of skin, the first dielectric layer being electrically connected to the first electrode (110) and the second electrode (120) for delivering the first current to the first area; and

a second dielectric layer for covering a second area of skin, the second dielectric layer being in electrical connection with the third electrode (130) and the fourth electrode (140) for delivering the second current to the second area, the second dielectric layer being separate from the first dielectric layer.

3. The skin treatment device of claim 2, wherein each of the first and second media layers comprises:

an insulating layer is formed on the substrate,

a pair of electrode films disposed on a second surface of the insulating layer for electrical connection with the first electrode (110) and the second electrode (120) in the first electrode pair assembly (410), or with the third electrode (130) and the fourth electrode (140) in the second electrode pair assembly (430);

and a conductive gel attached to surfaces of the pair of electrode films.

4. The skin treatment device of claim 2, wherein the first dielectric layer has a first profile matching a T-shaped region of facial skin and the second dielectric layer has a second profile matching a U-shaped region of facial skin.

5. Skin treatment device according to claim 1, characterized in that the power supply isolator (420) comprises an isolation barrier (424), the isolation barrier (424) comprising a transformer or inductors coupled to each other.

6. Skin treatment device according to claim 5, characterized in that the power supply isolator (420) further comprises a power converter (422) coupled to a power supply (450) configured to convert the supply power of the power supply (450);

wherein the isolation barrier (424) is coupled with the power converter (422) and configured to electrically isolate electrical power of the power source (450) from electrical power output to the respective electrode pair assembly.

7. Skin treatment device according to one of claims 1 to 6,

the first electrode pair assembly (410) includes a first output drive assembly (412),

the second electrode pair assembly (430) comprises a second output drive assembly (432),

the skin treatment device further comprises a controller (440) configured to communicate with the first output drive assembly (412) and the second output drive assembly (432), respectively, to cause the first output drive assembly (412) to output the first current and to cause the second output drive assembly (432) to output the second current, wherein the first current and the second current comprise pulses,

the skin treatment device further comprises a power supply (450), wherein the power supply (450) powers the first output drive assembly (412), the second output drive assembly (432) and the controller (440), respectively, wherein the first output drive assembly (412) and the second output drive assembly (432) are power isolated via the power isolator (420).

8. Skin treatment device according to claim 7,

the skin treatment device further comprises a signal isolator (425) configured on a signal line between at least one of the first output drive component (412) and the second output drive component (432) and the controller (440) such that communication signals between the at least one output drive component and the controller (440) are signal isolated from each other, wherein the signal isolator (425) comprises a digital isolator or an optical coupler.

9. The dermatological device of claim 7, comprising a plurality of power isolators (520, 520'), wherein each of the first and second output drive components are electrically isolated from each other via the respective power isolator.

10. A skin treatment device, comprising:

a first power supply (640);

a first electrode pair assembly comprising: a first electrode and a second electrode adapted to receive electrical power from the first power source, wherein the first electrode and the second electrode form a current loop; a first output driving assembly adapted to output a driving current to the first and second electrodes; and a first controller configured to communicate with the first output drive assembly to cause the first output drive assembly to output a corresponding current;

at least one second power source (650) electrically isolated from the first power source (640);

at least one second electrode pair assembly comprising: a third electrode and a fourth electrode adapted to receive electrical power from a respective second power source of the at least one second power source, wherein the third electrode and the fourth electrode form a current loop; a second output driving assembly adapted to output a driving current to the third and fourth electrodes; and a second controller configured to communicate with the second output drive assembly to cause the second output drive assembly to output a corresponding current; and

a signal isolator disposed between the first controller of the first electrode pair assembly and the second controller of the second electrode pair assembly.

11. A skin treatment device, comprising:

a first power supply (740);

a first electrode pair assembly comprising: a first electrode and a second electrode adapted to receive electrical power from the first power source, wherein the first electrode and the second electrode form a current loop; and a first output drive component adapted to output a drive current to the first and second electrodes;

at least one second power source (750) electrically isolated from the first power source (740);

at least one second electrode pair assembly comprising: a third electrode and a fourth electrode adapted to receive electrical power from a respective second power source of the at least one second power source, wherein the third electrode and the fourth electrode form a current loop; and a second output driving assembly adapted to output a driving current to the third and fourth electrodes;

a controller configured to draw electrical power from the first power source and communicate with the first output drive assembly and the respective second output drive assembly to cause the first output drive assembly and the respective second output drive assembly to output respective currents; and

a signal isolator disposed between the controller and the respective second output drive component.

12. A skin treatment device, characterized by comprising

A first electrode-pair assembly (410) comprising a first electrode (110) and a second electrode (120) adapted to apply a first current to the skin, wherein the first electrode (110) and the second electrode (120) form a first current loop; and

at least one second electrode pair assembly (430) comprising a third electrode (130) and a fourth electrode (140) adapted to apply a second current to the skin, wherein the third electrode (130) and the fourth electrode (140) form a second current loop;

wherein the first electrode pair assembly (410) and the second electrode pair assembly (430) are configured to: during operation of the respective electrode pair assemblies, the respective currents are output at respective time periods that are different from each other, and the respective time periods do not overlap with each other.

13. The skin treatment device of claim 12, wherein the first electrode-pair assembly and the second electrode-pair assembly are configured to: during a period in which the respective electrode pair assembly ceases operation, the respective output drive assembly of the respective electrode pair assembly is disconnected from the respective electrode pair of the respective electrode pair assembly.

14. The skin treatment device of claim 12, wherein the first electrode-pair assembly and the second electrode-pair assembly are configured to: during a period in which the respective electrode-pair assembly ceases operation, a zero current flows between the respective output drive assembly of the respective electrode-pair assembly and the respective electrode pair of the respective electrode-pair assembly.

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