KR102036535B1 - Implantable medical device - Google Patents

Abstract

The present invention relates to an implantable medical device, comprising: a power receiver configured to receive electric power by using an ultrasonic signal from an external power transmitter, a battery configured to charge power received through the power receiver, and a cylindrical shape having an upper surface opened Forming and forming a configuration including a vibration shielding layer for attenuating the vibration by the ultrasonic signal to shield the transmission to the outside of the case to form an appearance, having the vibration shielding particles or structure on the lower and outside of the case A shielding layer may be provided to attenuate ultrasonic vibrations to shield the vibrations from being transmitted to tissues or skeletons of the human body through the case.

Description

Implantable medical device {IMPLANTABLE MEDICAL DEVICE}

The present invention relates to an implantable medical device, and more particularly, to an implantable medical device for wirelessly transmitting power to an internal device of a medical device to be implanted in the body.

Recently, artificial organs such as pacemakers, cochlear implants, gastric stimulators, spinal cord stimulators, cardiac defibrillators, cardiac pacemakers, insulin pumps, foot drop implants, and deep brains are used to alleviate or treat symptoms of various diseases. Various implantable medical devices such as deep brain stimulation (DBS) have been developed.

Among them, the deep brain stimulator is an implantable medical device that applies electrical stimulation to specific areas of the brain to alleviate the symptoms of brain diseases such as Parkinson's disease.

The deep brain stimulation device according to the prior art is composed of an electrode implanted in the brain, a control device implanted in the chest area to generate an electrical stimulation signal, and a connecting line connecting the electrode and the control device.

Among the above components, the control unit is composed of a microprocessor-based complex electronic circuit, a battery for five years of driving, an RF transceiver for communication with the outside, and the like, and is specifically designed for long-term stable operation in vivo. The basic structure of an artificial heart pacemaker (Cardiac Pacemaker), which is housed in a manufactured titanium case and sealed by laser welding, is used.

Therefore, the deep brain stimulation apparatus according to the prior art is expensive manufacturing cost of the control device, the size is too large, the transplant site is forced to descend to the chest, especially when the battery life is reached within five years must be replaced by a new control device through surgery There was a problem.

In order to solve this problem, Patent Document 1 and Patent Document 2 below disclose a deep brain stimulation device technology to which a wireless power transmission technology is applied.

Patent Literature 1 forms a rotating magnetic field by a rotating magnetic disk provided inside a hat worn by a patient, and generates induced power by an induction coil plate fixed to the lower part of the patient's scalp so as to be combined with the formed rotating magnetic field. A deep brain stimulation device configuration is described that is configured to drive an electrode implanted in a body, and that can correct abnormal motor and sensory functions using power wirelessly supplied from the outside of the human body.

Patent Literature 2 includes an internal device implanted in the scalp and an external device for supplying power to the internal device by a wireless power transmission method, wherein the wireless power transmitter of the external device is externally induced with a magnetic field by the power supplied from the battery. A coil and an external coil include an external magnet wound around, and the wireless power receiver of the internal device includes an internal coil aligned with the external coil so that AC power is formed by a magnetic field induced by the external coil, and an internal magnet wound inside the coil. By combining the external device to the internal device with the external coil and the internal coil aligned as the external magnet is attached to the internal magnet, by combining the wireless power transfer function, semi-permanent ultra-deep brain that does not require reoperation due to battery consumption The stimulation system configuration is described.

Republic of Korea Patent Registration No. 10-0877228 (August 26, 2008) Republic of Korea Patent Registration No. 10-1662594 (October 6, 2016 announcement)

The deep brain stimulation device to which the wireless power transmission technology according to the prior art including the patent document 1 and the patent document 2 is applied generates the induced power by the magnetic induction method between the rotating magnetic field disk and the induction coil plate provided in the in vitro device and the internal device. Transfer power to your device.

However, the deep brain stimulation device to which the prior art wireless power transmission technology is applied transmits power to the internal device by using the wireless power transmission method, and according to the load change while stimulating the deep brain using the power transmitted from the internal device. There was no way to control the power to be transmitted.

For this reason, the deep brain stimulation device to which the wireless power transmission technology according to the prior art is applied continuously transmits the transmission in the in vitro device, regardless of the load variation in the in vivo device, and as the power of the battery provided in the in vitro device is consumed. There is a problem that the efficiency is lowered.

On the other hand, a method of transmitting energy wirelessly includes a method of transmitting power using electromagnetic induction, a method of transmitting power using radio frequency, and a method of transmitting power using ultrasonic waves. .

The electric power transmission device using electromagnetic induction is composed of a charging matrix for generating charging power using an external power source, and a power receiving module receiving charging power through electromagnetic induction from the charging matrix. Is the closest technique to.

However, as electromagnetic waves are rapidly reduced in the air with distance inversely proportional to the distance squared, power transmission devices using electromagnetic induction are limited to the charging matrix and the power receiving module being used at close distances within a few cm of each other. .

A power transmission apparatus using a radio frequency collects energy of RF having a long propagation distance and supplies power to an electronic device or a sensor. RF exists in air a lot, and its propagation distance has a very wide advantage. However, RF has a problem of low energy density itself or low energy amount after energy conversion.

The power transmission apparatus using the ultrasonic wave includes a transmitting device for generating ultrasonic waves and a receiving device for receiving the generated ultrasonic waves. The ultrasonic wave vibrates from the ultrasonic device by the interaction with the medium, and is transmitted through the vibrating medium.

The power transmission apparatus using ultrasonic waves can be used in various media such as water or human skin. However, when the transmitting and receiving apparatuses such as underwater or human skin are separated from each other, there is a problem in that the power transmission efficiency between the ultrasonic transmitting and receiving apparatuses is inferior. .

In particular, in the case of wirelessly transmitting power to the medical device implanted in the body by using ultrasonic waves, the ultrasonic signal may cause damage to the human tissue or the skeleton while causing vibration to the entire medical device.

Therefore, in order to minimize the damage of the body breakfast due to the ultrasonic vibration in the inserting machine, and to be able to stably adhere to the tissue, the development of a technology that can shield the vibration applied to the human body is required.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems as described above, and to provide an implantable medical device in the body capable of wirelessly transmitting power to a device implanted in the body using ultrasound in vitro.

Another object of the present invention is to provide an implantable medical device that can prevent the transmission of vibration in the body by shielding the ultrasonic vibration in the process of receiving the wirelessly transmitted power using the ultrasonic signal.

In order to achieve the object as described above, the implantable medical device according to the present invention is a power receiver for receiving power by a wireless power transmission method using an ultrasonic signal from an external power transmitter, the power received through the power receiver A battery to be charged, the upper surface is formed in a cylindrical shape and the outer shape and characterized in that it comprises a vibration shielding layer for attenuating the vibration by the ultrasonic signal to shield the transmission to the outside of the case.

As described above, according to the implantable medical device according to the present invention, by providing a vibration shielding layer having vibration shielding particles or structure at the bottom and the outside of the case to attenuate ultrasonic vibration to the tissue or skeleton of the human body through the case The effect that it can shield so that vibration is not transmitted is acquired.

Accordingly, according to the present invention, it is possible to prevent damage to tissues or skeletons of the human body due to vibration in the wireless power transmission process using ultrasonic waves, and to prevent discomfort or pain of the user due to ultrasonic vibrations.

1 is a block diagram of a deep brain stimulation apparatus according to a preferred embodiment of the present invention,
2 is an exploded view of the deep brain stimulation apparatus shown in FIG.
3 is a schematic cross-sectional view of the deep brain stimulation apparatus shown in FIG.
4 is a schematic cross-sectional view of a deep brain stimulation apparatus according to another embodiment of the present invention,
5 is a schematic cross-sectional view of a deep brain stimulation apparatus according to another embodiment of the present invention.

Hereinafter, an implantable medical device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the present embodiment, the deep brain stimulation device in the neurotransmitter supply device for implantable medical devices, but the present invention is not necessarily limited thereto.

That is, the present invention implants a device in the body to stimulate the nerves and supply the neurotransmitter artificial organs such as pacemakers or cochlear implants, gastric stimulator, spinal cord stimulator, heart used to alleviate or treat symptoms of various diseases It should be noted that it may be applied to a variety of implantable medical devices such as defibrillators, cardiac pacemakers, insulin pumps, foot drop implants.

1 is a block diagram of a deep brain stimulation apparatus according to a preferred embodiment of the present invention, Figure 2 is an exploded view of the deep brain stimulation apparatus shown in FIG.

Deep brain stimulation apparatus 10 according to a preferred embodiment of the present invention is implanted into the scalp, as shown in Figure 1, and the power supplied by the wireless power transmission method using ultrasonic waves from the power transmitter 12 in vitro To stimulate the cranial nerves.

In addition, the deep brain stimulation apparatus 10 detects a change in power load due to various factors such as skin thickness, hair growth rate, and blood flow change in the process of stimulating the brain nerve, and transmits the detected load information to the management terminal 11. I can send it.

To this end, the deep brain stimulator 10 includes a power receiver 20 for receiving power transmitted from the power transmitter 12, a battery 30 for charging power received through the power receiver 20, and a battery 30. It includes a stimulator 40 for stimulating the cranial nerve using the power supplied from.

The deep brain stimulation apparatus 10 may further include a control unit 60 for controlling the driving of each device provided in the deep brain stimulation apparatus 10 and a communication unit 60 communicating with the management terminal 11 in a wireless communication manner. Can be.

The management terminal 11 receives the operation state information of the deep brain stimulation apparatus 10 and the information detected by the deep brain stimulation apparatus 10 through communication with the deep brain stimulation apparatus 10, the deep brain stimulation apparatus 10 Transmit a control command for operating the) and change or update the program of the deep brain stimulation apparatus 10.

The power transmitter 12 may be provided as an ultrasonic transducer that receives commercial power, converts electrical energy into an ultrasonic signal having a predetermined frequency, and transmits the converted ultrasonic signal to the deep brain stimulator 10.

The power transmitter 12 may include a driving control unit 13 that converts electrical energy into an ultrasonic signal to generate an ultrasonic signal and transmit the generated ultrasonic signal.

The power transmitter 12 may include a matching layer 14 for matching with the power receiver 20 of the deep brain stimulation apparatus 10 to be described below.

The power receiver 20 may be provided as an ultrasonic transducer that converts an ultrasonic signal transmitted from the power transmitter 12 into electrical energy and receives power.

To this end, the power receiver 20 may include a piezoelectric element for changing the voltage of the electrical energy to the pressure by the ultrasonic signal.

Here, as shown in FIG. 2, the power receiver 20, the controller 50, the communicator 60, and the battery 30 are sequentially stacked in the case 80 along the vertical direction, and the power receiver 20 is provided. The upper surface of the case) may be provided with a matching layer 70 for packaging the upper surface of the case 80, and matching the acoustic impedance with the power transmitter 12.

And a lower portion of the case 80 may be provided with a vibration shielding layer 90 to attenuate the vibration transmitted from the power receiver 20 to shield it from being transmitted into the body.

That is, the ultrasonic signal transmitted from the power transmitter 12 is transmitted to the power receiver 20 through a medium layer such as skin or blood of the human body.

The transmission efficiency of the power wirelessly transmitted between the power transmitter 12 and the power receiver 20 is characterized by the characteristics of the media layer, that is, the material, geometry, transmission medium and attenuation of the media layer. attenuation) and the distance between the power transmitter 12 and the power receiver 20.

Accordingly, the present invention can improve the wireless power transmission efficiency by using the materials and geometry of the matching layers 14 and 70 provided in the power transmitter 12 and the power receiver 20, respectively.

On the other hand, the vibration shielding layer 90 attenuates the vibration by the ultrasonic signal transmitted to the power receiver 20 so as not to be transmitted to the outside of the case 80, the vibration transmitted in the wireless power transmission process using the ultrasonic signal And it prevents the discomfort or pain of the user due to the pressure.

The configuration of the vibration shielding layer 90 will be described in detail with reference to FIGS. 3 to 3 below.

1 and 2, the battery 30 may be provided as a rechargeable secondary battery.

The stimulator 40 may include an internal microcontroller (not shown), a stimulation circuit (not shown), and a stimulation circuit for generating a specific stimulus waveform for stimulating the cranial nerve using DC power supplied from the battery 30. It may include a stimulation electrode for stimulating the cranial nerve in accordance with the generated stimulation waveform.

The controller 50 may be provided as a main control device for controlling the driving of each device provided in the deep brain stimulation device 10.

The controller 50 may control the driving of the stimulator 40 to adjust the stimulus applied to the core of the brain according to a driving program stored in a memory (not shown).

In addition, the control unit 50 transmits load information that detects a change in power load due to various factors, such as skin thickness, hair growth rate, and blood flow change, to the management terminal in the process of stimulating the cranial nerve through the communication unit 60. Can be controlled.

To this end, the deep brain stimulation apparatus 10 further includes a sensing means (not shown) capable of sensing the load information, and the sensing signal output from the sensing means may be transmitted to the controller 50. .

In addition to the load information, the sensing means may further include a plurality of sensing sensors for sensing various information such as body temperature, blood pressure, respiratory rate, and temperature of the battery 30.

In addition, the controller 50 may control to change or update a program driving the stimulator 40 according to a control signal received from the management terminal 11 through the communication unit 60.

Meanwhile, in FIG. 2, the devices 80 and the devices 20, 30, 50, 60, and 70 accommodated inside the case 80 are illustrated in a cylindrical shape and a disc shape, but the present invention is not limited thereto. In some embodiments, the case 80 may be formed in a polygonal cylindrical shape such as a rectangular cylinder, and each device 20, 30, 50, 60, 70 accommodated in the case 80 may be modified in a polygonal plate shape.

Next, the configuration of the vibration shielding layer will be described in detail with reference to FIGS. 3 to 5.

3 is a schematic cross-sectional view of the deep brain stimulation apparatus shown in FIG.

First, before describing the configuration of the vibration shielding layer 90, the configuration of the matching layer 70 will be briefly described.

As the matching layer 70 is implanted in the body, the matching layer 70 has an acoustic impedance similar to the skin and blood of the human body forming the medium layer, and uses a material of biocompatibility that satisfies human safety standards. Can be prepared.

The biocompatibility defines a bidirectional reaction, that is, the body's response to a substance and the response of the substances to the body environment.

In particular, the biocompatibility of a medical device represents the ability of the medical device to perform its intended function with the desired degree of coupling in the host without eliciting unwanted local or systemic effects at the host.

In this embodiment, the biocompatible material is a medical grade or an implant grade material.

Therefore, in the present embodiment, the case 80 forming the outer shape of the deep brain stimulation apparatus 10 and the matching layer 70 packaging the upper surface of the case 80 are manufactured using a material of biocompatible material.

For example, the case 80 may be manufactured using a material made of a biocompatible metal such as titanium.

On the other hand, the acoustic impedance of skin is about 1.5 Mrayl, and the acoustic impedance of blood, ie, water, is about 1.48 Mrayl.

The acoustic impedance (Z) is the ratio between the speed of the medium and the sound pressure, which is the amount of sound pressure (P) acting on a plane parallel to the wavefront through which sound waves are transmitted divided by the volume velocity (uS) of the wave passing through that plane. (Z = P / uS).

For example, the matching layer 70 may be formed of a silicone-based material, such as silicone rubber, having an acoustic impedance similar to that of the human skin or blood constituting the medium layer, that is, about 1.4 to 1.6 Mrayl, and epoxy. It may be prepared using a high molecular compound such as a polymer such as (epoxy) or polyurethane (polyurethane).

Alternatively, the matching layer 70 may be made of a material having a higher acoustic impedance than the acoustic impedance of human skin or blood forming the medium layer.

For example, the matching layer 70 uses a polymer compound such as polyethylene, polypropylene, or polyester having an acoustic impedance of about 1.5 to about 3 Mrayl higher than that of skin or blood. Can be prepared.

The acoustic impedance of the polyethylene is about 1.78 Mrayl, the acoustic impedance of polypropylene is about 2.24 Mrayl, and the acoustic impedance of the polyester is about 2.86 Mrayl.

The matching layer 70 may have a plurality of conical or hemispherical protrusion structures to continuously change the acoustic impedance of the medium layer.

That is, the matching layer 70 is filled with air having an acoustic impedance of about 0.000409Mrayl at the upper end of each protrusion, and the acoustic impedance gradually increases as the cross-sectional area of each protrusion 71 increases toward the lower end of each protrusion. As it increases, the overall acoustic impedance of the matching layer 70 can be approximated to the impedance of the skin and blood of the human body.

Therefore, the protrusion structure provided in the matching layer 70 may prevent reflection of the ultrasonic signal and transmit the ultrasonic signal to each piezoelectric element of the power receiver 20.

As shown in FIG. 3, the vibration shielding layer 90 is provided under the inner space of the case 80, and includes the power receiver 20, the battery 30, the controller 50, and the communicator 600 provided thereon. By attenuating the vibration transmitted through the function to shield from being transmitted to the outside of the case (80).

To this end, the vibration shielding layer 90, like the matching layer 70, uses a biocompatible material of a silicon-based material, or a polymer compound such as a polymer such as epoxy or polyurethane. Can be prepared.

In addition, the vibration shielding layer 90 is provided under the battery 30 disposed at the lower end of the inner space of the case 80, and the side wall of the vibration shielding layer 90 is disposed along the inner surface of the case 80. It can be formed extending to the top of the.

In addition, the vibration shielding layer 90 may include vibration shielding particles 91 or vibration shielding structures for damping vibrations.

The vibration shielding particle 91 may be manufactured using a material of synthetic resin material having biocompatibility and impact resistance, such as polyetherether ketone.

The vibration shielding particle 91 may have a diameter changed according to the driving frequency of the ultrasonic signal and the wavelength of the vibration.

That is, the relationship between the wavelength, the frequency, and the speed of sound of the medium is defined by Equation 1 below.

For example, when the sound velocity of ultrasonic waves in silicon is about 1485 m / s, and the driving frequency of the ultrasonic signals used for the wireless power transmission using ultrasonic waves is about 300 Hz, the diameter of the vibration shielding particle is the size of the medium causing resonance. Wavelength / 2, i.e., greater than about 2.4 mm.

That is, in the present embodiment, by applying the vibration shielding particle 91 having a diameter larger than 1/2 of the wavelength calculated using the frequency of the ultrasonic signal and the sound velocity of the medium to the vibration shielding layer 90, the ultrasonic vibration is effectively applied. Can be attenuated.

The vibration shielding structure may be provided in a linear, grating, embossing, irregular array structure, or the like.

That is, the vibration shielding structure has a lattice structure having apertures smaller than half of the wavelength calculated using the frequency of the ultrasonic signal and the sound velocity of the medium, a linear structure in which a plurality of lines are arranged side by side, and a plurality of columns and rows. It can be provided in a variety of structures, such as embossed structure in which particles are formed, a structure in which lines or particles are arranged irregularly.

As described above, the present invention may provide a vibration shielding layer having vibration shielding particles or a structure at the bottom of the case to attenuate ultrasonic vibrations to shield the vibrations from being transmitted to the tissue or skeleton of the human body through the case.

Accordingly, the present invention can prevent damage to tissues or skeletons of the human body due to vibration in the wireless power transmission process using ultrasonic waves, and can prevent user discomfort or pain caused by ultrasonic vibrations.

Meanwhile, in the present exemplary embodiment, the vibration shielding layer is provided under the inner space of the case, but the present invention is not limited thereto.

For example, FIG. 4 is a schematic cross-sectional view of a deep brain stimulation device according to another embodiment of the present invention, Figure 5 is a schematic cross-sectional view of a deep brain stimulation device according to another embodiment of the present invention.

Deep brain stimulation apparatus 10 according to another embodiment of the present invention, as shown in Figure 4, the outer surface and the lower surface of the vibration shielding layer 90 and the case 80 provided in the lower inner space of the case 80 It may be changed to include the first vibration shielding layer 100 that wraps.

Here, the lower portion of the first vibration shielding layer 100 may be formed to have a larger diameter or area than the upper portion so as to increase the area in contact with the human body.

And the deep brain stimulation apparatus 10 according to another embodiment of the present invention, as shown in Figure 5, the outer surface of the vibration shielding layer 90 and the case 80 provided in the lower inner space of the case 80 The first vibration shielding layer 100 surrounding the lower surface and the second vibration shielding layer 110 surrounding the upper surface of the case 80 may be changed.

Here, each of the vibration shielding layers 90, 100 and 110 may be provided with at least one layer of vibration shielding particles 91 and 101 or a vibration shielding structure.

Therefore, in this invention, a vibration shielding layer can form a vibration shielding particle | grains or a vibration shielding structure in multiple layers, and can further improve vibration shielding performance.

In addition, the vibration shielding particles 91 and 101 or the vibration shielding structure may be provided at various positions such as an upper surface or a lower surface of each of the vibration shielding layers 90, 100 and 110, and the middle of each of the vibration shielding layers 90, 100 and 110.

As described above, the present invention may provide a vibration shielding layer that attenuates ultrasonic vibrations in the lower part and the outside of the case to shield the vibrations from being transmitted to the outside of the case.

Accordingly, it is possible to prevent damage to tissues or skeletons of the human body due to vibration in the wireless power transmission process using ultrasonic waves, and to prevent discomfort or pain of the user due to ultrasonic vibrations.

As mentioned above, although the invention made by the present inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

In the above embodiments, the configuration of the deep brain stimulation device in the neurotransmitter supply device for implantable medical devices in the body, but the present invention is implanted in the body device to stimulate the nerves to relieve or treat symptoms heart It may be modified to be applicable to various implantable medical devices such as artificial organs such as pacemakers, cochlear implants, gastric stimulators, spinal cord stimulators, cardiac defibrillators, cardiac pacemakers, insulin pumps, and limbs.

In the above embodiments, the stimulation unit and the sensing unit are described as being provided at the same time. However, the present invention provides only the stimulation unit to stimulate the nerves by providing only the stimulation unit and the sensor such as a BMI (Brain Machine Interface) to provide load information without stimulation. It may be changed to be applicable to medical devices that detect only biometric information.

The present invention provides a vibration shielding layer to attenuate ultrasonic vibrations to shield the vibrations from being transmitted to the outside of the case, thereby preventing damage to tissues or skeletons of the human body due to vibrations during the wireless power transmission process using ultrasonic waves, It is applied to the implantable medical device technology to prevent the discomfort or pain of the user.

10: deep brain stimulator
11: management terminal 12: power transmitter
13: drive control unit 14: matching layer
20: power receiver 30: battery
40: stimulation unit 50: control unit
60: communication unit 70: matching layer
80: case 90: vibration shielding layer
100,110: first and second vibration shielding layer
91,101: vibration shielding particles

Claims (11)

A power receiver for receiving power by a wireless power transmission method using an ultrasonic signal from an external power transmitter;
A battery for charging power received through the power receiver;
A case formed in a cylindrical shape with an upper surface opened and forming an outer shape;
Intra-body implantable medical device, characterized in that it comprises a vibration shielding layer for attenuating the vibration by the ultrasonic signal to shield the transmission to the outside of the case. The method of claim 1,
The vibration shielding layer is provided below the case inner space,
Intra-body implantable medical device, characterized in that the side wall of the vibration shielding layer is formed to extend along the inner surface of the case to the top of the case. The method of claim 2,
Intra-body implantable medical device further comprising a first vibration shielding layer surrounding the outer surface and the lower surface of the case. The method of claim 3,
Intra-body implantable medical device further comprises a second vibration shielding layer surrounding the upper surface of the case. The method according to any one of claims 1 to 4,
The vibration shielding layer is an implantable medical device, characterized in that is manufactured using a material of biocompatible materials. The method of claim 5,
Each vibration shielding layer is an implantable medical device, characterized in that it is manufactured using a silicon-based material or a high molecular compound. The method of claim 5,
Each vibration shielding layer is provided with a plurality of vibration shielding particles in at least one layer, so as to enhance the vibration damping effect,
The vibration shielding particle is an implantable medical device, characterized in that is manufactured using a material of synthetic resin material having biocompatibility and impact resistance. The method of claim 7, wherein
The diameter of the vibration shielding particle is an implantable medical device, characterized in that it is set larger than 1/2 of the wavelength calculated using the frequency of the ultrasonic signal and the sound velocity of the medium. The method of claim 5,
Each vibration shielding layer is provided with a vibration shielding structure of at least one or more layers so as to enhance the vibration damping effect,
The vibration shielding structure is an implantable medical device, characterized in that it is provided in any one or more of a linear, grating, embossed, irregular array structure using a material of biocompatible material. The method of claim 1,
Stimulator for stimulating the nerve using the power supplied from the battery,
Sensing unit for detecting fluctuations in power load or biometric information in the process of stimulating nerves,
Communication unit for communicating with the management terminal in a wireless communication method and
Further comprising a control unit for controlling the driving of each device provided in the implantable medical device,
The control unit controls to transmit the load information and the biometric information detected by the detection unit through the communication unit,
The implantable medical device, characterized in that the stimulation unit and the sensing unit is provided at the same time, or only one. The method of claim 1,
The power transmitter generates a ultrasonic signal by converting electrical energy into an ultrasonic signal, and a driving control unit for controlling to transmit the generated ultrasonic signal;
Intra-body implantable medical device comprising a matching layer for matching the acoustic impedance with the power receiver.

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