KR102148985B1 - Multinode Wireless Power Transmission System, Using Method For Node and Multinode - Google Patents

Abstract

The present disclosure provides a multi-node wireless power transmission system inserted into a living body, comprising: a wireless power transmission apparatus provided outside the living body; And, a multi-node wireless power receiving device that is located away from the wireless power transmission device inserted into the living body and includes a plurality of nodes; wherein each node includes an insulating layer, a circuit, and an antenna to insulate each node from the outside. And a multi-node wireless power receiving device, wherein adjacent nodes relate to a multi-node wireless power transmission system having different heights from the bottom of the insulating layer.

Description

Multinode Wireless Power Transmission System, Using Method For Node and Multinode}

The present disclosure (Disclosure) relates to a multi-node wireless power transmission system, a node and a method of using a plurality of nodes, which are inserted into a living body as a whole, and in particular, a multi-node wireless power transmission system inserted into a living body and inserted into a living body having a multi-node, It relates to a node and a method of using a plurality of nodes.

Here, a background technology related to the present disclosure is provided, and these do not necessarily mean a known technology (This section provides background information related to the present disclosure which is not necessarily prior art).

Sensing or stimulating nervous tissue in vivo offers a variety of advantages or opportunities in the fields of treatment, analysis and diagnosis. A battery is generally used to supply power to a sensor or device that is implanted in a living body and senses or stimulates nerve tissue. However, since sensors or devices that are implanted in a living body to sense or stimulate nervous tissue are small and lightweight, the size of the battery used here is also very small. Because the size of the battery is small, the utilization time of the sensor or device is very small. As a way to solve this problem, a wireless power transmission method that wirelessly transmits power from the outside is suitable.

1 is a diagram showing an example of a nerve stimulation apparatus using a wireless power transmission technology disclosed in Japanese Patent Laid-Open No. 2013-220266. For convenience of explanation, the symbols and names in the drawings have been partially changed.

The stimulation device 1 is composed of a stent body 2 and includes a circuit 3, and the power supply to the circuit 3 receives and supplies a radio frequency signal transmitted from the outside from the antenna 4 . In addition, the antenna 4 receives a control signal sent from the outside and transmits it to the circuit 3, and the circuit 3 sends a stimulus signal to the electrode 5 by the received control signal to stimulate the nerve.

2 is a view showing an example of an artificial retina driving apparatus using the wireless power transmission technology described in Korean Patent Application Publication No. 2010-0041244. For convenience of explanation, the symbols and names in the drawings have been partially changed.

The artificial retinal driving apparatus 10 wirelessly supplies power to the artificial retinal circuit 13 in the eyeball by resonance between the first driving circuit 11 and the second driving circuit 12 mounted in the user's eye.

However, in the prior art described in Figs. 1 and 2, the receiving unit receiving a resonance frequency sent from the outside to supply power to the retina circuit 13 or circuit 3 located inside the living body, respectively, the antenna 4 or the second driving circuit There was only one as (12). Therefore, since all the power required by the retina circuit 13 or the circuit 3 must be supplied from the antenna 4 or the second driving circuit 12, the resonance that contains a lot of energy from the external transmitter to send the power required to the receiver It had to send a frequency, which could cause damage to the body. In addition, in the conventional technology, when a sensor or device located inside a living body is a multi-channel, the sensor or device consumes a lot of power because the entire sensor or device must be operating even when stimulating only one point of the living body or receiving a signal. Heat is generated. This has a fatal problem for living cells sensitive to heat.

The present disclosure solves the problems of the prior art since a device located in a living body and receiving power wirelessly includes a plurality of nodes.

This will be described later in the'Specific Contents for the Implementation of the Invention'.

Here, a summary of the present disclosure is provided, and this section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

According to an aspect of the present disclosure, there is provided a multi-node wireless power transmission system inserted into a living body, comprising: a wireless power transmission apparatus provided outside the living body; And, a multi-node wireless power receiving device that is located away from the wireless power transmission device inserted into the living body and includes a plurality of nodes; wherein each node includes an insulating layer, a circuit, and an antenna to insulate each node from the outside. And a multi-node wireless power receiving apparatus, wherein adjacent nodes are provided with a multi-node wireless power transmission system having different heights from the bottom of the insulating layer.

According to another aspect of the present disclosure, there is provided a method of using a node for stimulating a stimulation region, comprising: preparing a node including a plurality of electrodes; Finding a neutral electrode for stimulating at least one target cell among a plurality of cells provided in the stimulation region; And, there is provided a method of using a node comprising; stimulating at least one target cell in the stimulation region by a current flowing from the remaining electrode to the neutral electrode.

According to another aspect according to the present disclosure, in a method of using a plurality of nodes for stimulating a shaded area, each comprising a plurality of electrodes, a first stimulating a first stimulation area Preparing a second node for stimulating the node and the second stimulation region; Finding a neutral electrode for stimulating at least one or more target cells from among the plurality of electrodes of the first node and the second node to stimulate the shaded area between the first stimulation region and the second stimulation region; Further, a method of using a plurality of nodes including a step of stimulating at least one target cell provided in the shaded area by a current flowing from the remaining electrode to the neutral electrode is provided.

This will be described later in the'Specific Contents for the Implementation of the Invention'.

1 is a view showing an example of a nerve stimulation device using the wireless power transmission technology presented in Japanese Patent Laid-Open No. 2013-220266;
2 is a view showing an example of an artificial retina driving apparatus using the wireless power transmission technology described in Korean Patent Publication No. 2010-0041244,
3 is a diagram showing an example of a multi-node wireless power transmission system according to the present disclosure;
4 is a diagram illustrating an example of a node included in a multi-node wireless power transmission system according to the present disclosure;
5 is a flowchart illustrating an example of a wireless power transmission method of a multi-node wireless power transmission system according to the present disclosure;
6 is a block diagram illustrating an example of a circuit configuration when a multi-node wireless reception device according to the present disclosure is used as a retinal stimulation device;
7 is a block diagram illustrating an example of a circuit configuration when a multi-node wireless reception device according to the present disclosure is used as a neural signal measuring device;
8 is a diagram illustrating another example of a multi-node wireless power transmission system according to the present disclosure;
9 is a diagram illustrating an example in which a wireless power receiving device according to the present disclosure is installed on a retina;
10 is a diagram illustrating an example of a method of using a node according to the present disclosure;
11 is a diagram illustrating an example of a current flow in a node according to the present disclosure;
12 is a diagram illustrating an example of a method of using a plurality of nodes according to the present disclosure;
13 is a diagram illustrating an example of a current flow in a plurality of nodes according to the present disclosure;
14 is a diagram illustrating an example of a method of manufacturing a multi-node wireless power transmission system according to the present disclosure.

Hereinafter, the present disclosure will now be described in detail with reference to the accompanying drawing(s)).

3 is a diagram illustrating an example of a multi-node wireless power transmission system according to the present disclosure.

The multi-node wireless power transmission system 100 includes a wireless power transmission apparatus 110 and a multi-node wireless power reception apparatus 120 including a plurality of nodes. The wireless power transmission device 110 is a known device that transmits an LC resonant frequency. The multi-node wireless power receiving apparatus 120 includes a plurality of nodes 130. In addition, the multi-node wireless power transmission system 100 includes a control device 140. The control device 140 controls the resonant frequency transmitted from the wireless power transmission device 110 to the wireless power reception device 120, and generates a control signal for controlling the operation of the node 130 to generate the wireless power transmission device 110. Or, it is sent to the node 130 through a separate antenna. The control device 140 may be a computer device. 3(b) shows an example of a multi-node wireless power receiving apparatus 120.

4 is a diagram illustrating an example of a node included in a multi-node wireless power transmission system according to the present disclosure.

The node 130 included in the multi-node wireless power transmission system includes an antenna 131, a circuit 132 and an electrode 133. The antenna 131 includes an LC resonance circuit. In addition, the antenna 131 resonates at the same frequency as the resonant frequency transmitted from the wireless power transmission device 110 to generate power. The generated power is delivered to the circuit 132. In addition, the antenna 131 receives a control signal made by the control device 140 and the received control signal is transmitted to the circuit 132. An example of the configuration of the circuit 132 is shown in FIGS. 6 and 7. The electrode 133 gives a certain stimulus to a living body or receives a bio-signal from a living body cell under the control of the circuit 132. The biosignal received from the electrode 133 is transmitted to the circuit 132. The circuit 132 converts the biosignal received from the electrode 133 into a digital signal and transmits it to the control device 140 through the antenna 131. The control device 140 may analyze the received biosignal. The electrode 133 is composed of one or more. The antenna 131, the circuit 132, and the electrode 133 can be made by vapor deposition on a substrate or a printing method using conductive ink. In particular, as shown in FIG. 3(b), a plurality of nodes 130 may be formed on one substrate 134 at once. The substrate 134 is preferably made of a flexible material. Since the substrate 134 is a flexible material and a plurality of small nodes 130 form the multi-node wireless power receiving device 120, even if the multi-node wireless power receiving device 120 is bent, the function of each node is affected. Does not affect Accordingly, the shape of the multi-node wireless power receiving device 120 is freely deformed, so that the multi-node wireless power receiving device 120 can be easily installed in a place in a living body where it is difficult to install. Although not shown, a multi-node wireless power receiver may be manufactured by attaching each node to one substrate after each node is manufactured.

5 is a flowchart illustrating an example of a wireless power transmission method in a multi-node wireless power transmission system according to the present disclosure.

In a multi-node wireless power transmission system, a wireless power transmission device wirelessly transmits power (S1). The method of transmitting power wirelessly includes, for example, a magnetic resonance method, and a resonance frequency is used in Korean Patent Publication No. 1736160, Korean Patent Publication No. 2016-0102779, and Japanese Patent Publication No. 2013-534847. Power transmission technology is described. Thereafter, a multi-node wireless power receiving apparatus including a plurality of nodes receives power (S2). In particular, in the present disclosure, unlike the conventional technology, each of a plurality of nodes wirelessly receives power through an antenna in which each of a plurality of nodes includes an LC resonance circuit. Thereafter, the first group including at least one node among the plurality of nodes wirelessly receives power from the second group including the remaining nodes other than the first group (S3). For example, in the wireless power receiving device 120 consisting of a plurality of nodes 130 as shown in FIG. 5(b), the hatched nodes 134 correspond to the first group and the rest belong to the second group. have. Each of the plurality of nodes has a unique ID (Identification). The external control device 140 classifies a plurality of nodes into a first group and a second group based on the IDs of each of the plurality of nodes, and commands the nodes belonging to the second group to transmit power to the nodes belonging to the first group. do. Power transmission from the second group to the first group is performed according to a wireless power transmission method. For example, power transmission is possible between antennas having the same resonant frequency of the LC resonant circuit. In addition, the change in the magnetic field due to the change in magnetic flux caused by another circuit through which current flows, generates an induced electromotive force in the coil at a close distance, and a current is generated. Similarly, the external control device 140 sends a control signal to change the bandwidth of the resonance frequency and quality factor of the node belonging to the first group, or the current direction and strength of the adjacent node antenna so that the magnetic field of the antenna of the selected node is strongly applied. By adjusting the node, it is possible to deliver power by acting as a donor or acceptor. Power loss occurs when power is wirelessly transmitted between a plurality of nodes, but a large amount of power can be obtained because power is concentrated to a node selected from a number of nodes. Therefore, it is preferable that the number of nodes belonging to the second group that distributes power is greater than the number of nodes belonging to the first group that receives power. Since power transmission from the second group to the first group is performed by wireless power transmission, a wire for power transmission between nodes is not required.

6 is a block diagram illustrating an example of a circuit configuration when a multi-node wireless reception device according to the present disclosure is used as a retinal stimulation device.

An apparatus for stimulating retinal optic cells is presented as a specific embodiment of a multi-node wireless receiving apparatus according to the present disclosure. The retinal stimulation apparatus composed of numerous nodes is composed of a transmitting/receiving antenna, retinal stimulation electrodes, and circuits at each node, and the circuit is composed of a power and data receiver and a stimulator. The system thus constructed is located in the retinal optic cells within a few millimeters. What has been revealed so far is that the visible shape varies according to the part and pattern to be stimulated, and as the number of channels increases or the stimulus parameters such as current intensity, duration, and pulse frequency are diversified, the visible image becomes clear and clear. The essence of the present disclosure is that power can be selectively focused on a part to be stimulated in a stimulation system composed of a multi-channel. In the multi-node wireless power transmission system proposed by the present disclosure, every node has a unique ID. By transmitting data wirelessly through this ID, the LC resonant circuit of the power receiving antenna of a specific node can be modified. First, the wireless power transmitter wirelessly transmits power to a multi-node wireless power receiver in the eye. At this time, although there is a difference depending on the transmission distance, most nodes receive relatively the same amount of power by the same LC resonant circuit. Then, the control device transmits a command wirelessly to transform the LC resonance circuit of the node at a specific point to be stimulated through a varactor or variable resistor. Varactor can change the resonant frequency because the capacitance changes according to the applied voltage, and the bandwidth of the quality factor can be changed through a variable resistor. At this time, the node acting as a donor changes the LC resonance circuit so that the antenna of the node acting as an acceptor passes current through the antenna so that the magnetic field is strengthened, and the acceptor receives power from the donor as much as possible. In this way, the power is sequentially concentrated to the node at the desired point, and the target point node can stimulate the retinal nerve with more current than other nodes around it. When the power is concentrated to a specific node, a stable voltage is supplied to the stimulator through power management consisting of a rectifier and a regulator. The light entering the photodetector is converted into an electric signal, and the current intensity is determined in proportion to the size of the converted electric signal. Important parameters when stimulating include stimulation intensity, pulse duration, and frequency. As mentioned above, the strength of the stimulus is determined by the power transmission between nodes or the magnitude of the electrical signal detected by the photodetector, and the pulse duratrion and freuqnecy are determined by commands transmitted from an external control device to the antenna. The command received through the antenna is converted into a data format that can be accepted by the stimulator by the digital controller of the circuit and transmitted. Finally, the current generated by the stimulator is transmitted to the electrode to stimulate the retinal nerve. Instead of a single device, each separate micro-node can be combined and implanted into the retina along with a thin and flexible polymer substrate.

7 is a block diagram illustrating an example of a circuit configuration when a multi-node wireless reception device according to the present disclosure is used as a neural signal measuring device.

Another specific embodiment is a device that measures or triggers a neural signal. It consists of a number of nodes, and each node has a transmit/receive antenna, an electrode for stimulation and measurement, and a circuit integrated. As previously suggested, the electrode inside the blood vessel can measure the change in the potential of the nerve signal and simultaneously stimulate it. In the case of the circuit, the power management, power and data transmission and reception unit, the recorder and the stimulator are combined, and the power management and the stimulator are similar in configuration and function to the retinal nerve stimulation apparatus shown in FIG. The recorder amplifies the neural signal obtained from the electrode with a low noise amplifier and detects the desired neural signal (local field potential, action potential, electrocorticography, electroencephalography) with a bandpass filter. The detected signal is digitized with an analog-to-digital converter and transformed to a specific frequency through an oscillator. It receives a command to selectively change the LC resonance circuit of a specific node and data to determine stimulation parameters from an external control device through an antenna, and transmits the measured data to the external control device through a recorder. The external control device analyzes the transmitted data and derives meaningful results.

8 is a diagram illustrating other examples of a multi-node wireless power transmission system according to the present disclosure.

A perspective view of the multi-node wireless power receiving apparatus 120 is formed as shown in FIG. 8(a), and FIG. 8(b) shows an example of a cross section AA′ of FIG. 8(a). FIG. 8(c) is another example of the cross section AA′ of FIG. 8(a).

In the multi-node wireless power transmission system 100 (FIG. 3) inserted into a living body, the multi-node wireless power transmission system 100 includes a wireless power transmission device 110 (FIG. 3) provided outside the living body, and a multi-node provided in the living body. It includes a wireless power receiving device 120. The multi-node wireless power receiving apparatus 120 is insulated from the outside by the insulating layer 150. The multi-node wireless power receiving apparatus 120 includes a plurality of nodes 130. Each node 130 includes an insulating layer 150 that insulates the node 130 from the outside, a circuit 132 (FIG. 3), and an antenna 131 (FIG. 3). In this case, adjacent nodes 130-1 among the plurality of nodes 130 have different heights h from the bottom 153 of the insulating layer 150. The insulating layer 150 is preferably a flexible material. The insulating layer 150 may be, for example, polymides, liquid crystal polymer (LCP), or the like, and may be a material that has a low water absorption rate and is not easily decomposed and is flexible.

The plurality of nodes 130 have a plurality of electrodes 133, and the plurality of electrodes 133 are formed to be exposed without being covered by the insulating layer 150. The plurality of electrodes 133 are exposed to stimulate cells.

Although not shown in the perspective view of FIG. 8(a), a cross-sectional view of FIG. 8(b) shows how the plurality of nodes 130 are arranged in the wireless power receiver. 8(b) shows a cross section in which the insulating layer 150 is bent. When this is placed on a plane, adjacent nodes 130-1 among the plurality of nodes 130 provided in the insulating layer 150 have different heights h from the bottom 153 of the insulating layer 150. Is formed. An example having two heights from the bottom 153 of the insulating layer 150 to the plurality of nodes 130 is shown.

Fig. 8(c) is the same cross-section as Fig. 8(b), and the insulating layer 150 is provided on the plane. 8(c) is an example in which adjacent nodes 130-1 among the plurality of nodes 130 have different heights h, and the plurality of nodes 130 from the bottom 153 of the insulating layer 150 An example with three heights is shown.

When the plurality of nodes 130 are provided on the insulating layer 150, the reason for having different heights h is that the plurality of nodes 130 are charged by the wireless power transmission device 110, and adjacent nodes 130 Current is charged by the antennas 131 respectively provided in -1). Each node 130 has its own magnetic field. Each magnetic field affects adjacent nodes 130-1. In this case, when the adjacent nodes 130-1 are provided on the same plane, the magnetic fields cancel each other and the charging efficiency decreases.

9 is a diagram illustrating an example in which the wireless power receiver according to the present disclosure is installed on a retina.

This is an example in which the multi-node wireless power receiving device 120 is installed in the retina. Node 130 may stimulate retinal ganglion cells. The electrode 133 is attached facing the retina. Electrodes 133 provided in the retina stimulate ganglion cells. The multi-node wireless power receiving device 120 provided at the back of the eye is preferably bent flexibly like the surface of the eye, the insulating layer 150 is flexible, and the plurality of nodes 130 are not connected to each other. Therefore, the multi-node wireless power receiving apparatus 120 is bent well.

10 is a diagram illustrating an example of a method of using a node according to the present disclosure.

In the method of using a node to stimulate the stimulation region 160,

First, a node 130 including a plurality of electrodes 133 is prepared. The plurality of electrodes 133 of the node 130 may stimulate the stimulation region 160. The stimulation region 160 may vary depending on the magnitude of the current or the electrode 133, but refers to a region through which a current can flow so that cells can be stimulated by one node 130.

Thereafter, a neutral electrode 133-1 (FIG. 11) for stimulating at least one target cell c among a plurality of cells provided in the stimulation region 160 is found. The neutral electrode 133-1 may also be referred to as a reference electrode. In the drawing, the stimulation region 160 is indicated by a dotted line.

For example, the target cells c to be stimulated may vary depending on which one of the plurality of electrodes 133 is selected as the neutral electrode 133-1. That is, when stimulating the target cell (c), since the location and size of the cells are different for each person, the neutral electrode 133-1 and the target cell c are converted into data, and the neutral electrode 133-1 and the target cell are It is important to match (c).

Thereafter, at least one target cell c in the stimulation region 160 is stimulated by a current flowing from the remaining electrode 133-2 (FIG. 11) to the neutral electrode 133-1. A current is passed to stimulate at least one or more target cells c, in which case the current flows from the remaining electrode 133-2 toward the neutral electrode 133-1. The flow of current in the node 130 will be described with reference to FIG. 11.

11 is a diagram illustrating an example of a current flow in a node according to the present disclosure.

A diagram showing the node 130 in a plan view. Although the shape of the node 130 is drawn in a circle, the node 130 may be formed in a hexagonal shape. A neutral electrode 133-1 is provided among the plurality of electrodes 133 provided in the node 130. Then, a current (arrow) comes out from the remaining electrode 133-2 and flows into the neutral electrode 133-1. As the flow of current (arrow) is formed, the current (arrow) may stimulate at least one target cell c.

When the position of the neutral electrode 133-1 is changed, the flow of current (arrow) is changed, so that other target cells c can be stimulated.

Accordingly, target cells c having different positions within the stimulation region 160 may be separately stimulated.

12 is a diagram illustrating an example of a method of using a plurality of nodes according to the present disclosure.

In the method of using a plurality of nodes 130 to stimulate the shaded area 170,

First, a first node 130 each including a plurality of electrodes 133 and stimulating the first stimulation region 161 and the second node 130 stimulating the second stimulation region 162 are prepared.

Thereafter, at least one of the plurality of electrodes 133 of the first node 130 and the second node 130 to stimulate the shaded area 170 between the first stimulation region 161 and the second stimulation region 162 A neutral electrode 133-1 (FIG. 13) for stimulating the target cells c in one or more shaded areas 170 is found. As shown in FIG. 12, the target cells c are provided in the shaded area 170, and the shaded area 170 is provided in addition to the first stimulation region 161 and the second stimulation region 162. One of the plurality of electrodes 133 of the first node 130 or the second node 130 is formed as a neutral electrode 133-1 in order to stimulate the shaded area 170. At this time, the position of the neutral electrode 133-1 may vary depending on the target cell c to be stimulated.

Thereafter, at least one target cell c provided in the shaded area 170 is stimulated by a current flowing from the remaining electrode 133-2 (FIG. 13) to the neutral electrode 133-1. One of the plurality of electrodes 133 of the first node 130 and the second node 130 is formed as a neutral electrode 133-1, and the other electrode 133-2 is a neutral electrode 133- It flows into 1). The flow of current in the plurality of nodes 130 will be described with reference to FIG. 13.

13 is a diagram illustrating an example of a current flow in a plurality of nodes according to the present disclosure.

The plurality of nodes 130 includes a first node 130 and a second node 130. This shows a case where the neutral electrode 133-1 is formed on the first node 130. Current (arrow) comes out from the remaining electrodes 133-2 other than the neutral electrode 133-1 provided in the first node 130 and the second node 130, and a current (arrow) to the neutral electrode 133-1 Flows in. Accordingly, a plurality of cells of the shaded region 170 provided between the first stimulation region 161 of the first node 130 and the second stimulation region 162 of the second node 130 may be stimulated. The position of the neutral electrode 133-1 may be changed according to the target cell c among the plurality of cells.

14 is a diagram illustrating an example of a method of manufacturing a multi-node wireless power transmission system according to the present disclosure.

First, a first insulating layer 151 in which a groove 180 is formed as shown in FIG. 14(a) is provided. The first insulating layer 151 may be a polymer.

Thereafter, as shown in FIG. 14B, a plurality of nodes 130 are provided on the groove 180 and the first insulating layer 151 between the groove 180 and the groove 180. The adjacent node 130-1 has a different height h from the bottom 153 of the first insulating layer 151. The height h1 of the node 130 provided in the groove 180 is formed differently from the height h2 of the node 130 provided in the insulating layer 151 between the groove 180 and the groove 180.

Thereafter, as shown in FIG. 14C, the second insulating layer 152 is covered over the node 130 and the first insulating layer 151.

Thereafter, as shown in FIG. 14(d), heat is applied so that the first insulating layer 151 and the second insulating layer 152 are adhered. The first insulating layer 151 and the second insulating layer 152 may be formed of the same material. The first insulating layer 151 and the second insulating layer 152 may be bonded to each other while melting.

Thereafter, a part of the second insulating layer 152 is removed so that the electrode 133 is exposed as shown in FIG. 14(e). It is preferable that the second insulating layer 152 has a soft portion in contact with the first insulating layer 151. This is because the second insulating layer 152 must meticulously cover the top of the uneven first insulating layer 151 and the plurality of nodes 130.

Hereinafter, various embodiments of the present disclosure will be described.

(1) A multi-node wireless power transmission system inserted into a living body, comprising: a wireless power transmission device provided outside the living body; And, a multi-node wireless power receiving device that is located away from the wireless power transmission device inserted into the living body and includes a plurality of nodes; wherein each node includes an insulating layer, a circuit, and an antenna to insulate each node from the outside. And a multi-node wireless power receiving device, wherein adjacent nodes have different heights from the bottom of the insulating layer.

(2) Each node is a multi-node wireless power transmission system including one or more electrodes.

(3) A multi-node wireless power transmission system in which the electrode of the node is exposed from the insulating layer.

(4) The antenna of the node is a multi-node wireless power transmission system including an LC resonance circuit.

(5) Multi-node wireless power transmission system in which each node has a unique ID.

(6) The plurality of nodes are classified into a first group including one or more nodes and a second group including other nodes excluding the first group, and power is wireless from the node of the second group to the node of the first group. Multi-node wireless power transmission system that is transmitted through.

(7) A multi-node wireless power transmission system in which the number of nodes belonging to the first group is smaller than the number of nodes belonging to the second group.

(8) A multi-node wireless power transmission system in which a plurality of nodes are located apart from each other in an insulating layer.

(9) Insulation layer is a flexible (flexible) material multi-node wireless power transmission system.

(10) A method of using a node for stimulating a stimulation region, the method comprising: preparing a node including a plurality of electrodes; Finding a neutral electrode for stimulating at least one target cell among a plurality of cells provided in the stimulation region; And stimulating at least one target cell in the stimulation region by a current flowing from the remaining electrode to the neutral electrode.

(11) A method of using a plurality of nodes for stimulating a shaded area, each comprising a plurality of electrodes, preparing a first node for stimulating a first stimulation region and a second node for stimulating a second stimulation region ; Finding a neutral electrode for stimulating at least one or more target cells from among the plurality of electrodes of the first node and the second node to stimulate the shaded area between the first stimulation region and the second stimulation region; And, the step of stimulating at least one target cell provided in the shaded area by a current flowing from the remaining electrode to the neutral electrode; a method of using a plurality of nodes comprising a.

According to the present disclosure, a method of using a node capable of stimulating each target cell in a stimulation region using a neutral electrode is provided.

According to the present disclosure, a method of using a plurality of nodes capable of stimulating target cells in a shaded area is provided.

According to the present disclosure, there is provided a wireless power transmission system in which a plurality of nodes are not affected by each other's magnetic fields when charged by a wireless power transmission device.

Multi-node wireless power transmission system: 100
Multi-node wireless power receiver: 120
Node: 130
Control device: 140

Claims (11)

In the multi-node wireless power transmission system inserted into a living body,
A wireless power transmission device provided outside the body; And,
A multi-node wireless power receiving device that is located away from the wireless power transmission device inserted into the body and includes a plurality of nodes; wherein the plurality of nodes wirelessly transmit power to each other, and each node insulates each node from the outside Including; a multi-node wireless power receiving device including an insulating layer, a circuit and an antenna,
A multi-node wireless power transmission system in which adjacent nodes have different heights from the bottom of the insulating layer. The method according to claim 1,
Each node is a multi-node wireless power transmission system including one or more electrodes. The method according to claim 2,
A multi-node wireless power transmission system in which the electrode of the node is exposed from the insulating layer. The method according to claim 1,
The antenna of the node is a multi-node wireless power transmission system including an LC resonant circuit. The method according to claim 1,
Multi-node wireless power transmission system in which each node has a unique ID. The method according to claim 1,
The plurality of nodes are classified into a first group including one or more nodes and a second group including the remaining nodes excluding the first group,
A multi-node wireless power transmission system in which power is wirelessly transmitted from the node of the second group to the node of the first group. The method according to claim 1,
A multi-node wireless power transmission system in which the number of nodes belonging to the first group is less than the number of nodes belonging to the second group. The method according to claim 1,
A multi-node wireless power transmission system in which a plurality of nodes are located apart from each other in an insulating layer. The method according to claim 1,
Insulation layer is a flexible (flexible) material multi-node wireless power transmission system. In the method of using one node among a plurality of nodes of a multi-node wireless power receiving apparatus for stimulating a stimulation region,
Preparing one node of a plurality of nodes of the multi-node wireless power receiving apparatus of claims 1 to 9 including a plurality of electrodes;
Finding a neutral electrode for stimulating at least one target cell among a plurality of cells provided in the stimulation region; And,
Stimulating at least one target cell in the stimulation region by a current flowing from the remaining electrode to the neutral electrode; method of using one node among a plurality of nodes of the multi-node wireless power receiving apparatus comprising. In the method of using a plurality of nodes of a multi-node wireless power receiving apparatus for stimulating a shaded area,
Claims 1 to 9 each comprising a plurality of electrodes and stimulating a first node and a second stimulation region, which are one of a plurality of nodes of the multi-node wireless power receiving apparatus of claims 1 to 9 for stimulating the first stimulation region Preparing a second node that is another one of a plurality of nodes of one of the multi-node wireless power receiving apparatuses;
Finding a neutral electrode for stimulating at least one or more target cells from among the plurality of electrodes of the first node and the second node to stimulate the shaded area between the first stimulation region and the second stimulation region; And,
A method of using a plurality of nodes of a multi-node wireless power receiving apparatus comprising; stimulating at least one target cell provided in the shaded area by a current flowing from the remaining electrode to the neutral electrode.

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