KR102499001B1 - Wireless chargable electrostimulus device and electrostimulus device set including the same - Google Patents

Abstract

The present invention provides an electrical stimulation device embedded under the skin to provide electrical stimulation to nerves and capable of wireless charging, comprising: a nerve stimulation unit for generating electrical stimulation provided to nerves; a battery unit supplying power to the nerve stimulation unit and capable of repetitive charging; a power receiver for converting a magnetic field introduced from the outside into current and supplying it to the battery unit; and a frame body made of a material having an electromagnetic wave shielding function, a first accommodating part provided in the frame body to which the power receiver is fixed, and a second accommodating part provided in the frame body to which the nerve stimulation part and the battery part are fixed. An inner frame including an accommodating portion; and wherein the first accommodating portion and the second accommodating portion are structurally separated from each other by a portion of the frame body.

Description

Electrical stimulation device capable of wireless charging and electrical stimulation device set including the same {Wireless chargable electrostimulus device and electrostimulus device set including the same}

The present invention relates to an electrical stimulation device capable of wireless charging and a set of electrical stimulation devices including the same.

Electronic medicine is a compound word of electronics and pharmaceutical, and means an electronic device that treats diseases by controlling electrical signals generated in the brain and nerve cells.

In the early days, simple implantable medical devices such as pacemakers were the mainstay, but recently, electronic devices that stimulate nerve tissue are evolving to treat chronic diseases such as epilepsy, diabetes, arthritis, and high blood pressure.

Electronic medicines are buried under the skin and select and stimulate only a specific part that needs treatment, so side effects can be minimized, and in case of emergency, the medicinal effect can be stopped immediately.

However, in the case of currently developed electronic drugs, most of them use primary batteries, so they have to be drawn out of the human body regularly to replace the batteries, and in the case of using secondary batteries, they are also regularly drawn out of the human body to charge the batteries. There are downsides to be had.

This not only makes management cumbersome, but also poses a problem in which the probability of nerve damage is quite high because the process of implanting and withdrawing electronic drugs directly connected to nerves must be repeated.

Therefore, it is preferable to use a wireless charging method so that the secondary battery is used but the electronic medicine itself is not withdrawn from the body for a long period of time.

However, when using the wireless charging method, due to the size of the wireless charging unit that must be additionally provided inside the electronic drug, the electronic drug capable of wireless charging has an inherent limitation in that the size is inevitably larger than the existing one.

Therefore, there is a need for a wireless charging unit to reduce side effects and a foreign body feeling felt by the patient, and for this purpose, there is a need to increase the charging efficiency of the charging module so that efficient charging is possible even with a small-sized wireless charging unit.

In addition, in wireless charging, an electromagnetic induction method is generally used, and in this case, a problem in that a magnetic field generated during charging may disturb the nerve stimulation system may occur.

Therefore, it is necessary to develop a structure that effectively shields the magnetic field and find a way to shorten the wireless charging time to minimize the disturbance of the neural stimulation system.

Japanese Published Patent Publication No. 2016-537045

The present invention has been devised to solve the above conventional problems, and has an object to increase the wireless charging efficiency of the electrical stimulation device.

In addition, the present invention has an object to shorten the wireless charging time of the electrical stimulation device.

In addition, the present invention has an object to reduce the size of the wireless charging unit.
In addition, an object of the present invention is to prevent components that provide electrical stimulation to nerves from being disturbed by a magnetic field generated by a wireless charger.

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According to one embodiment of the present invention, in the electrical stimulation device embedded under the skin to provide electrical stimulation to nerves and capable of wireless charging, the nerve stimulation unit for generating electrical stimulation provided to the nerves; a battery unit supplying power to the nerve stimulation unit and capable of repetitive charging; a power receiver converting a magnetic field introduced from the outside into current and supplying current to the battery unit; and a frame body made of a material having an electromagnetic wave shielding function, a first accommodating part provided in the frame body to which the power receiver is fixed, and a second accommodating part provided in the frame body to which the nerve stimulation part and the battery part are fixed. An inner frame including an accommodating portion; and wherein the first accommodating portion and the second accommodating portion are structurally separated from each other by a portion of the frame body. .

In an exemplary embodiment, the first accommodating part may be located on the side of the second accommodating part.

In an exemplary embodiment, the first accommodating part is formed by being recessed from one side of the frame body, the second accommodating part is formed by being recessed from the other side of the frame body, and the first accommodating part and the second accommodating part are formed. The opening directions may be opposite to each other.

In an exemplary embodiment, the first accommodating part is formed by being recessed from one side of the frame body, the second accommodating part is formed by being recessed from the other side of the frame body, and the first accommodating part and the second accommodating part are formed. The opening direction may be the same.

In an exemplary embodiment, the power receiving unit includes a receiver coil having both ends connected to the battery unit and converting a magnetic field into current, and the inner frame structurally includes the first accommodating unit and the second accommodating unit. A body through-hole is formed in a portion of the frame body to separate them from each other, and both ends of the receiver coil may pass through the body through-hole and be connected to the battery unit.

In an exemplary embodiment, the first accommodating part may be provided on one surface of the frame body, and the second accommodating part may be provided on the other surface of the frame body.

In an exemplary embodiment, the power receiver includes a receiver coil having both ends connected to the battery unit and converting a magnetic field into current, the inner frame having body through-holes vertically penetrating the frame body, Both ends of the receiver coil may be connected to the battery unit through the body through-hole.

In an exemplary embodiment, the power receiver includes a receiver coil having both ends connected to the battery unit and converting a magnetic field into current, the inner frame having a body through-hole penetrating a sidewall of the frame body, , Both ends of the receiver coil may be connected to the battery unit through the body through-hole.

In an exemplary embodiment, a material having an electromagnetic wave shielding function constituting the inner frame may be a non-toxic biocompatible material.

In an exemplary embodiment, both ends of the power receiving unit are connected to the battery unit, and the receiving unit coil converts a magnetic field into a current; and a receiver ferrite to which the receiver coil is fixed and provided between the receiver coil and the frame body, wherein the receiver ferrite is fixed to the first accommodating unit, and a receiver ferrite base on which the receiver coil is seated; and a receiver ferrite sidewall protruding from an end of the receiver ferrite base and covering at least a portion of an outer circumference of the receiver coil.

In an exemplary embodiment, a height of a sidewall of the receiver ferrite protruding from the ferrite base of the receiver may be equal to or higher than a vertical height of the coil of the receiver.

In an exemplary embodiment, a through hole through which both ends of the coil of the receiver pass may be provided in the ferrite base of the receiver or the sidewall of the ferrite of the receiver.

In an exemplary embodiment, the receiver ferrite protrudes from the receiver ferrite base, and the receiver ferrite winding part in which the receiver coil is wound; further includes, and the height of the receiver ferrite winding unit protrudes from the receiver ferrite base to the receiver unit. It may be equal to or higher than the vertical height of the coil.

According to one embodiment of the present invention, in the electrical stimulation device set including the electrical stimulation device capable of wireless charging, including a wireless charger for charging the electrical stimulation device capable of wireless charging, the wireless charger is a magnetic field and a power transmission unit generating and transmitting the power to the power reception unit, wherein the power transmission unit includes a transmission unit coil that converts current into a magnetic field; and a transmitter ferrite to which the transmitter coil is fixed, wherein the transmitter ferrite includes a transmitter ferrite base on which the transmitter coil is seated; It is possible to provide a set of electrical stimulation devices, characterized in that it comprises a; and protruding from the end of the transmitter ferrite base to cover at least a portion of the outer circumferential portion of the transmitter coil.

According to one embodiment of the present invention, in the electrical stimulation device set including the electrical stimulation device capable of wireless charging of claim 1, further comprising a wireless charger for charging the electrical stimulation device capable of wireless charging, the wireless charging A position induction unit is provided at the center of the power receiver of this possible electrical stimulation device, and the wireless charger generates a magnetic field and transmits power to the power receiver; a location confirmation unit provided at the center of the power transmission unit and detecting the location induction unit; It is possible to provide a set of electrical stimulators comprising a; and when it is detected that the position induction unit is located in the correct position by the positioning unit, a charging notification unit for informing it to the outside.

The present invention has the effect of increasing the wireless charging efficiency of the electrical stimulation device.

In addition, the present invention has the effect of shortening the wireless charging time of the electrical stimulation device.

In addition, the present invention has the effect of reducing the size of the wireless charging unit of the electrical stimulation device.

In addition, the present invention has an effect of preventing components that provide electrical stimulation to nerves from being disturbed by a magnetic field generated by a wireless charger.

1 is a block diagram showing detailed configurations of an electrical stimulation device capable of wireless charging according to an embodiment of the present invention.
Figure 2 is an electrical stimulation device capable of wireless charging according to an embodiment of the present invention, a perspective view of a housing removed.
3 is an exploded perspective view of the electrical stimulator capable of wireless charging, with the housing removed.
FIG. 4 is a cross-sectional view taken along line A-A' of FIG. 2 .
5 is an electrical stimulation device capable of wireless charging according to another embodiment of the present invention, a perspective view of a housing removed.
6 is an electrical stimulator capable of wireless charging according to another embodiment, an exploded perspective view of a housing removed.
FIG. 7 is a cross-sectional view taken along line BB′ of FIG. 5 .
8 is an electric stimulation device capable of wireless charging according to another embodiment, showing an example in which a body through-hole through which a coil line passes is provided in a ferrite base.
9 is a schematic diagram of a state in which a magnetic field is transmitted from the power transmitter of the wireless charger to the power receiver of the electric stimulation device capable of wireless charging.
10 is a block diagram showing detailed configurations of a wireless charger for charging an electrical stimulation device capable of wireless charging according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described with reference to the drawings.

First, FIG. 1 is a block diagram illustrating the basic configurations of an electrical stimulation device, and with reference to this, configurations of an electrical stimulation device capable of wireless charging according to an embodiment of the present invention will be described.

The electrical stimulation device may be embedded under the skin to provide electrical stimulation to nerves.

To this end, the electrical stimulation device includes a housing 11 forming an exterior, a nerve stimulation unit 2 generating electrical stimulation provided to nerves, and a battery that supplies power to the nerve stimulation unit 2 and can be recharged repeatedly. unit 4, a power receiver 3 that converts a magnetic field introduced from the outside into current and supplies it to the battery unit 4, and the nerve stimulation unit 2, the battery unit 4, and the power receiver 3 It may include an inner frame (5) for fixing.

In addition, the electrical stimulation device may further include a position induction unit 6 for inducing the wireless charger outside the human body to be positioned in the correct position during wireless charging, a detailed description of this will be described later in FIG. 9 .

The nerve stimulation unit 2, the power receiver 3, the battery unit 4, and the position induction unit 6 are all fixed to the inner frame 5 and may be located inside the housing 11.

The nerve stimulation unit 2 includes an electrical stimulation generator 21 for transmitting electrical signals to the vagus nerve, a memory 23 for storing signal information generated by the electrical stimulation generator 21, and generating the electrical stimulation. A controller 22 controlling the unit 21 and the memory 23 may be included.

Accordingly, a PCB is inevitably provided in the nerve stimulation unit. In this case, serious problems such as the sensitive PCB being disturbed by an external magnetic field may cause the electrical stimulation generating unit 21 to transmit an abnormal signal to the vagus nerve. there is.

Therefore, the inner frame 5 needs to prevent the magnetic field received through the power receiver 3 from being transmitted to the nerve stimulation unit 2 and the battery unit 4 .

To this end, the inner frame 5 may be made of a material that shields electromagnetic waves and is non-toxic to the human body, and physically blocks the power receiver 3, the nerve stimulation unit 2, and the battery unit 4. It may have a separable structure.

The material may be at least one of a metal such as non-toxic alumina ceramic (Al2O3) or titanium (Ti), a non-toxic acrylic resin, a synthetic resin such as nylon, Teflon, polyurethane, polyester, and silicone.

Hereinafter, with reference to FIGS. 2 and 3, the overall arrangement of the above-described components and the detailed structure of the inner frame 5 will be described in detail.

2 shows a state in which the housing 1 is removed, and the inner frame 5 and the nerve stimulation unit 2 disposed inside the inner frame 5 can be confirmed.

Figure 3 is an exploded perspective view of Figure 2 above, it is possible to see the arrangement state of the internal components of the electrical stimulation device in more detail.

The power receiver 3 may include a receiver coil 31 having both ends connected to the battery unit 4 and converting a magnetic field into current, and a receiver ferrite 32 to which the receiver coil 31 is fixed. .

Accordingly, when a magnetic field is applied to the receiver coil 31, a current is generated in the receiver coil 31 by electromagnetic induction, and the generated current charges the battery unit 4.

In addition, the receiver ferrite 32 is provided between the receiver coil 31 and the inner frame, and serves to induce the incoming magnetic field to concentrate on the receiver coil 31 without flowing out to the periphery.

The inner frame 5 includes a frame body 51 made of a material having an electromagnetic wave shielding function, a first accommodating portion 52 provided on the frame body 51 and to which the power receiver 3 is fixed, It is provided on the frame body 51 and may include a second accommodating part 53 to which the nerve stimulation part 2 and the battery part 4 are fixed.

The first accommodating part 52 may be formed as a groove recessed from one side of the frame body 51, and the second accommodating part 53 may be formed as a recess recessed from the other side of the frame body 51. there is.

At this time, the first accommodating part 52 is located on the side of the second accommodating part 53, but the first accommodating part 52 and the second accommodating part 53 are located on the middle wall of the frame body. can be structurally separated from each other by

This prevents the magnetic field flowing into the first accommodating part 52 from affecting the nerve stimulation part 2, thereby preventing abnormal stimulation of nerves due to system disturbance.

Furthermore, the opening directions of the first accommodating part 52 and the second accommodating part 53 may be opposite to each other, which is caused by the lower surface of the frame body 51 constituting the second accommodating part 53. The magnetic field that can be transferred to the second accommodating part 53 is shielded more effectively.

The opening direction of the first accommodating part 52 and the second accommodating part 53 may be provided in the same upward direction, which makes it easier to assemble parts in the manufacturing process, thereby increasing product productivity. .

Hereinafter, with reference to FIG. 4, which is a cross-sectional view taken along line AA' of FIG. 2, the structure of the electrical stimulation device capable of wireless charging will be described in more detail.
The nerve stimulation unit 2 and the battery unit 4 may be disposed vertically in the second accommodating unit 53, and electricity is transmitted from the battery unit 4 to the nerve stimulation unit through a power line L. energy can be transferred.

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In addition, the inner frame 5 has a body through-hole 54 formed in the middle wall of the frame body 51 to structurally separate the first accommodating portion 52 and the second accommodating portion 53 from each other. , and both ends CL of the receiver coil may be connected to the battery unit 4 through the body through-hole 54 .

This configuration allows both ends (CL) of the receiver coil to be directly connected to the battery unit 4 without detouring to the outside of the inner frame 5, thereby reducing the overall volume of the electrical stimulation device.

The receiver ferrite 32 is fixed to the first receiver 52 and protrudes from a receiver ferrite base 321 on which the receiver coil 31 is seated and a corner of the receiver ferrite base 321 to receive the receiver coil. It may include a ferrite sidewall 322 covering the outer side of the receiver.

In addition, a through hole 323 through which both ends of the receiver coil CL pass may be provided in the receiver ferrite sidewall 322 .

The through hole 323 may be provided in the receiver ferrite base 321, but in this embodiment, it is preferable to be provided in the receiver ferrite sidewall 322 for efficient use of space.

The height of the receiver ferrite sidewall 322 protruding from the receiver ferrite base 321 may be equal to or higher than that of the receiver coil 31 .

The receiver ferrite sidewall 322 effectively shields the outer periphery of the receiver coil 31 to prevent a problem in which the nerve stimulation unit 2 is disturbed by a magnetic field, and at the same time concentrates the magnetic field on the receiver coil 31. The charging speed can be increased by increasing the charging efficiency.

In addition, as the charging efficiency increases, the volume of the power receiver 3 and the inner frame 5 are reduced, resulting in an effect of dramatically reducing the size of the electrical stimulation device.

5 to 7 show an electrical stimulation device capable of wireless charging according to another embodiment of the present invention, showing a state in which the housing 1 is removed.

Unlike the above-described embodiment, the nerve stimulation unit 2 and the battery unit 4 may be provided side by side, and the power receiver 3' may be provided on the lower surface of the frame body 51'. can

That is, the first accommodating part 52' is provided on the upper part of the frame body 51' and the second accommodating part 53' is provided on the lower part of the frame body, so that the nerve stimulation part 2 and The battery unit 4 may be disposed on the upper side and the power receiving unit 3' may be disposed on the lower side.

In addition, sidewalls of the frame body 51' are provided to surround outer peripheries of the nerve stimulation unit 2 and the battery unit 4, effectively shielding the magnetic field transmitted to the nerve stimulation unit 2. .

According to this embodiment, the ferrite 32' and the frame body 51' can be located between the receiver coil 31' and the nerve stimulation unit 2 in a large area, so that the magnetic field shielding effect is higher. , At the same time, the area of the receiver coil 31' is enlarged, so that the charging speed can be remarkably increased.

At this time, the body through-hole 54' may be provided to pass through the sidewall of the frame body 51', and both ends CL of the receiver coil pass through the body through-hole 54' to the battery unit. can be connected

8 shows that the body through-hole 54' is provided so as to pass through the lower surface of the frame body 51' up and down, and the both ends CL of the receiver coil do not detour to the outside of the inner frame 5, but directly This is an example of being connected to the battery unit 4.

9 is a schematic diagram of a state in which a magnetic field is transmitted from the power transmitter 92 of the wireless charger to the power receiver 3 of the electric stimulation device capable of wireless charging.

The receiver ferrite 32 protrudes from the central portion of the receiver ferrite base 321 and may further include a receiver ferrite winding part 324 in which the receiver coil 31 is wound, and in the receiver ferrite base 321 The height of the protruding receiver ferrite winding part 324 may be equal to or higher than the vertical height of the receiver coil 31 .

The receiver ferrite winding part 324 serves to firmly fix the receiver ferrite winding part 324 and allows a magnetic field to be concentrated on the wire constituting the receiver coil 31 .

On the other hand, the electrical stimulation device set according to an embodiment of the present invention may further include a wireless charger for charging the electrical stimulation device capable of wireless charging.

The wireless charger may include a power transmitter 92 that generates a magnetic field and transmits it to the power receiver 3, and the power transmitter 92 includes a transmitter coil 921 that converts current into a magnetic field and the transmitter coil. 921 may include a ferrite 922 of the transmitter to which it is fixed.

In addition, the transmitter ferrite 922 protrudes from the transmitter ferrite base 9221 on which the transmitter coil 921 is seated and the end of the transmitter ferrite base 9221 to form at least a portion of the outer periphery of the transmitter coil 921. It may include a transmitter ferrite sidewall 9222 covering and a transmitter ferrite winding part 9224 protruding from the center of the transmitter ferrite base 9221 and around which the transmitter coil 921 is wound.

In addition, the wireless charger is provided at the center of the power transmission unit 92, and may further include a positioning unit 94 for detecting the position induction unit 6.
Referring to FIG. 10 in more detail, the wireless charger may further include a charging notification unit 95, and the charging notification unit 95 is controlled by the positioning unit 94 to determine the location induction unit 6. ) is detected as being located in the correct position, it is notified to the outside through sound/light/display.

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This has the effect of allowing the wireless charger to accurately target and charge the electrical stimulation device, further increasing the charging efficiency of the electrical stimulation device and shortening the charging time.

Even effects not described in the present specification, in the present invention, each of the above-described components may additionally have other effects, and derive new effects that cannot be seen in the prior art according to the organic coupling relationship between each of the above-described components. can do.

In addition, the embodiments shown in the drawings may be modified and implemented in other forms, and if implemented including the configuration claimed in the claims of the present invention or implemented within the scope of equivalents, it should be regarded as belonging to the scope of the present invention. something to do.

Housing 1 Nerve stimulation unit 2 Power receiving unit 3
Battery part 4 Inner frame 5 Position induction part 6
Charger housing 91 Power transmission part 92 Charger battery part 93
Location confirmation unit 94 Charging notification unit 95

Claims (15)

An electrical stimulation device embedded under the skin to provide electrical stimulation to nerves and capable of wireless charging,
a nerve stimulation unit that generates electrical stimulation provided to nerves;
a battery unit supplying power to the nerve stimulation unit and capable of repetitive charging;
a power receiver converting a magnetic field introduced from the outside into current and supplying current to the battery unit; and
A frame body made of a material having an electromagnetic shielding function, a first accommodating part provided in the frame body to which the power receiver is fixed, and a second accommodating part provided in the frame body to which the nerve stimulation part and the battery part are fixed Including; inner frame including a part,
The first accommodating part and the second accommodating part are structurally separated from each other by a part of the frame body,
The first accommodating part is located on the side of the second accommodating part,
The first accommodating portion is formed by being recessed from one side of the frame body,
The second accommodating portion is formed by being recessed from the other side of the frame body,
The opening directions of the first accommodating portion and the second accommodating portion are opposite to each other,
The first accommodating portion and the second accommodating portion are electrical stimulators capable of wireless charging, characterized in that they are structurally separated from each other by the middle wall of the frame body in the lateral direction. delete delete According to claim 1,
The first accommodating portion is formed by being recessed from one side of the frame body,
The second accommodating portion is formed by being recessed from the other side of the frame body,
Electrical stimulation device capable of wireless charging, characterized in that the opening direction of the first accommodating portion and the second accommodating portion are the same. According to claim 1 or 4,
the power receiver
A receiver coil having both ends connected to the battery unit and converting a magnetic field into a current;
The inner frame
A body through-hole formed in a portion of the frame body to structurally separate the first accommodating portion and the second accommodating portion from each other;
Both ends of the receiver coil are
Electrical stimulation device capable of wireless charging, characterized in that connected to the battery unit through the body through-hole. According to claim 1,
The first accommodating portion is provided on one surface of the frame body,
The second accommodating portion is electrical stimulation device capable of wireless charging, characterized in that provided on the other side of the frame body. According to claim 6,
the power receiver
Both ends are connected to the battery unit and include a receiver coil that converts a magnetic field into a current,
The inner frame
A body through-hole vertically penetrating the frame body,
Both ends of the receiver coil are
Electrical stimulation device capable of wireless charging, characterized in that connected to the battery unit through the body through-hole. According to claim 6,
the power receiver
Both ends are connected to the battery unit and include a receiver coil that converts a magnetic field into a current,
The inner frame
A body through-hole passing through a sidewall of the frame body,
Both ends of the receiver coil are
Electrical stimulation device capable of wireless charging, characterized in that connected to the battery unit through the body through-hole. According to claim 1,
The material having an electromagnetic shielding function constituting the inner frame is a wireless charging electric stimulation device, characterized in that the non-toxic biocompatible material. According to claim 1,
the power receiver
a receiver coil having both ends connected to the battery unit and converting a magnetic field into current; and
The receiver coil is fixed, and the receiver ferrite provided between the receiver coil and the frame body; includes,
The receiver ferrite
a receiver ferrite base fixed to the first accommodating unit and on which the receiver coil is seated; and
A receiver ferrite sidewall protruding from the end of the receiver ferrite base and covering at least a portion of the outer circumferential portion of the receiver coil; wireless charging is possible electrical stimulation device comprising a. According to claim 10,
Wireless charging is possible electrical stimulation device, characterized in that the height of the receiver ferrite sidewall protruding from the receiver ferrite base equal to or higher than the vertical height of the receiver coil. According to claim 10,
Wireless charging is possible electrical stimulation device, characterized in that the receiver ferrite base or the side wall of the receiver ferrite is provided with a through hole through which both ends of the receiver coil passes. According to claim 10,
The receiver ferrite
Further comprising: a receiving unit ferrite winding unit protruding from the receiving unit ferrite base and in which the receiving unit coil is wound;
Electrical stimulation device capable of wireless charging, characterized in that the height of the receiver ferrite winding portion protruding from the receiver ferrite base is equal to or higher than the vertical height of the receiver coil. In the electrical stimulation device set comprising the electrical stimulation device capable of wireless charging of claim 1,
Including a wireless charger for charging the electrical stimulation device capable of wireless charging,
The wireless charger
A power transmitter for generating a magnetic field and transmitting it to the power receiver,
The power transmitter
a transmitter coil that converts current into a magnetic field; and
Including; a transmission unit ferrite to which the transmission unit coil is fixed,
The transmitter ferrite
a transmitter ferrite base on which the transmitter coil is seated; and
Electrostimulation device set comprising a; protruding from the end of the transmitter ferrite base to cover at least a portion of the outer circumferential portion of the transmitter coil. In the electrical stimulation device set comprising the electrical stimulation device capable of wireless charging of claim 1,
Further comprising a wireless charger for charging the electrical stimulation device capable of wireless charging,
A position induction unit is provided at the center of the power receiving unit of the electric stimulation device capable of wireless charging,
The wireless charger
a power transmission unit generating a magnetic field and transmitting the generated magnetic field to the power reception unit;
a location confirmation unit provided at the center of the power transmission unit and detecting the location induction unit; and
When it is detected that the position induction unit is located in the correct position by the position confirmation unit, a charging notification unit for informing it to the outside; Electrical stimulation device set comprising a.

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