CN114583847A - Real-time focusing microwave charging system for implantable instrument - Google Patents
Real-time focusing microwave charging system for implantable instrument Download PDFInfo
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- CN114583847A CN114583847A CN202210187103.8A CN202210187103A CN114583847A CN 114583847 A CN114583847 A CN 114583847A CN 202210187103 A CN202210187103 A CN 202210187103A CN 114583847 A CN114583847 A CN 114583847A
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- millimeter wave
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- mixer
- charging
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- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000004146 energy storage Methods 0.000 claims description 24
- 238000007599 discharging Methods 0.000 claims description 11
- 230000021615 conjugation Effects 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 7
- 238000003491 array Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000000747 cardiac effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 210000000056 organ Anatomy 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 206010040872 skin infection Diseases 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/372—Arrangements in connection with the implantation of stimulators
- A61N1/378—Electrical supply
- A61N1/3787—Electrical supply from an external energy source
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The invention discloses a real-time focusing microwave charging system for an implanted instrument, and relates to a millimeter wave energy transmission system for automatically tracking a receiving device and focusing energy by using a direction backtracking array technology. The wireless charging device is used for charging batteries of implantable devices, such as artificial organs and implantable cardiac pacemakers, and comprises: the millimeter wave transmitter comprises a millimeter wave transmitting part and a millimeter wave receiver, wherein the transmitter comprises a positioning receiver consisting of four positioning tracking antennas and a mixer phase conjugate loop and is used for tracking the position of the receiver and generating a focused waveform; the receiver part comprises a receiving antenna module consisting of an implanted receiving antenna and a positioning signal source, and is used for receiving the energy beam by the receiver direction positioning and focusing. The invention solves the charging problem of the small implanted device by the millimeter wave wireless charging technology, thereby avoiding replacing the device battery in the operation and greatly reducing the risk and the economic cost of the operation of the patient.
Description
Technical Field
The invention relates to the technical field of medical electronic instruments, in particular to a real-time focusing millimeter wave energy transmission system for wireless charging of an implanted instrument.
Background
People who rely on implanted medical devices to maintain normal life are huge, and relatively large implanted active devices such as cardiac pacemakers mostly adopt disposable batteries or wired power supply. Aiming at the defects that the pacemaker needs to be replaced again in operation and the wired skin infection and the like when the battery power is exhausted in the modes, the system aims to design a set of wireless charging system which has good efficiency, can realize information interaction between inside and outside of a human body and is miniaturized and meets the radiation safety requirement of the human body tissue when the energy is transmitted through the human body tissue.
Disclosure of Invention
In order to solve the problem that the implanted instrument can only be replaced by an operation after the energy of the battery is exhausted, the invention provides a wireless charging system of the implanted instrument based on direction backtracking millimeter wave energy focusing and a charging method thereof.
The specific technical scheme for solving the technical problems is as follows: a wireless charging system of an implantable instrument comprises a millimeter wave transmitting part and an energy receiving part; the millimeter wave transmitting part is arranged outside the human body, and the energy receiving part is arranged inside the human body and is connected with the implanted device; the millimeter wave transmitting part provides electric energy for the energy receiving part in a mode of transmitting millimeter wave energy through the transmitting antenna array; the energy receiving portion is for powering an implantable device.
Further, the millimeter wave transmitting part comprises a positioning receiver 106, a mixer phase conjugate loop, a power amplifier 104 and a transmitting antenna array 105; one end of the mixer phase conjugation loop is connected to the positioning receiver 106, the other end of the mixer phase conjugation loop is connected to the power amplifier 104, and the other end of the power amplifier 104 is connected to the transmit antenna array 105.
Further, the mixer phase conjugation loop comprises a mixer 103, and a band-pass filter 107 and a voltage-controlled signal source 102 which are connected with the mixer 103;
further, the transmitting antenna array 105 is a circular polarized rectangular antenna array, and includes a transmitting antenna array composed of four 3 × 1 sub-arrays, and is configured to generate radiation energy carriers with sequential phase conjugation to achieve an effect of real-time focusing of radiation energy.
Further, the energy receiving part comprises a receiving antenna 108, a positioning transmitter 112, a rectifier 109, an energy storage module 110, and a charging and discharging management module 111; the receiving antenna 108 is configured to receive millimeter wave energy transmitted by the transmitting antenna array 105, the receiving antenna 108 is connected to a rectifier 109, the rectifier 109 is connected to the energy storage module 110, the energy storage module 110 is connected to the charge and discharge management module 111, and the other end of the charge and discharge management module 111 is connected to the positioning transmitter 112.
Further, the energy storage module 110 includes a rechargeable lithium battery; the charging and discharging management module 111 monitors whether the energy storage module 110 is fully charged, and if the monitored electric quantity is lower than a set value, sends a charging requirement instruction to the positioning transmitter 112, and the positioning transmitter 112 sends positioning information after receiving the instruction; if the charging and discharging management module 111 monitors that the electric quantity is full, the charging to the energy storage module 110 is immediately stopped, and an instruction for stopping the charging when the electric quantity is full is sent to the positioning transmitter 112, and the positioning transmitter 112 stops sending a positioning signal when the instruction for full electric quantity is obtained; the positioning receiver 106 cannot receive the positioning information, and the millimeter wave transmitting section stops charging.
Further, the positioning transmitter 112 transmits a 28GHz positioning signal to the positioning receiver 106, the band-pass filter 107 transmits the filtered positioning signal to the mixer 103, the mixer 103 mixes the filtered positioning signal with the 56GHz intrinsic signal generated by the voltage-controlled millimeter wave oscillator 102 to obtain a phase-conjugated 28GHz signal, and then amplifies the phase-conjugated 28GHz signal by the power amplifier 104 to be used as a carrier for energy transmission, the power supply 101 supplies power to the voltage-controlled signal source 102 and the power amplifier 104, and the transmitting antenna array 105 focuses the energy carrier on the receiving antenna 108 in real time.
The invention has the following beneficial effects: the system adopts a millimeter wave energy power supply design, positions the position of the implanted device in real time through the direction backtracking array, then directionally transmits the focused millimeter wave energy to the energy receiving part through the transmitting antenna array, and further converts the millimeter wave energy into current to charge the lithium battery of the energy storage module to supply power to the implanted device, so that the device does not need to be replaced in an operation, the risk and the economic burden of the operation of a patient are greatly reduced, and the system has a real-time automatic positioning and charging function and higher flexibility.
Drawings
FIG. 1 is a schematic structural diagram of a millimeter wave energy transmission system for wireless charging of an implantable device according to the present invention;
fig. 2 is a schematic diagram of a transmit antenna array structure;
FIG. 3 is a schematic diagram of an energy receptor configuration;
wherein: a millimeter wave transmit antenna array-105; a positioning receiver-106; a circuit board-113; an antenna carrier plate-114; a bracket-115;
-a receiving antenna-108; a positioning transmitter-112; a battery-116; power management circuit board-117; -a housing-118; an implantable device-119;
Detailed Description
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings.
Referring to fig. 1, the wireless charging system for the implantable device comprises a millimeter wave transmitting part and an energy receiving part; the millimeter wave transmitting part is arranged outside the human body, and the energy receiving part is arranged inside the human body and is connected with the implanted device; the millimeter wave transmitting part provides electric energy for the energy receiving part in a mode of transmitting millimeter wave energy through the transmitting antenna array; the energy receiving portion is used for supplying power to the implantable device;
furthermore, the millimeter wave transmitting part comprises a positioning receiver, a mixer phase conjugate loop, a power amplifier and a transmitting antenna array; one end of the mixer phase conjugation loop is connected with the positioning receiver, the other end of the mixer phase conjugation loop is connected with the power amplifier, and the other end of the power amplifier is connected with the transmitting antenna array;
the mixer phase conjugate loop includes, by way of example, a mixer 103, a filter 107, a voltage-controlled millimeter wave signal source 102; the transmit antenna array comprises: a transmit antenna array 105 consisting of four 3x1 sub-arrays;
further, the positioning transmitter 112 of the receiving part transmits a 28GHz positioning signal to the positioning receiver 106, the band-pass filter 107 transmits the filtered positioning signal to the mixer 103, the mixer 103 mixes the filtered positioning signal with the 56GHz intrinsic signal generated by the voltage-controlled millimeter wave oscillator 102 to obtain a phase-conjugated 28GHz signal, and then the phase-conjugated 28GHz signal is amplified by the power amplifier 104 to be used as a carrier for energy transmission, the power supply 101 supplies power to the voltage-controlled signal source 102 and the power amplifier 104, and the transmitting antenna array 105 focuses the energy carrier on the receiving antenna 108 in real time
As an illustration, the transmitting antenna array 105 is a circularly polarized rectangular antenna array, the positioning transmitter 112 of the receiving part transmits a 28GHz positioning signal to the positioning receiver 106, and the band-pass filter 107 transmits the filtered positioning signal to the mixer 103; the transmitting antenna array 105 is a 4x3 antenna array and is composed of 4 sub-arrays of 3x1, and is used for generating a radiation energy carrier wave with phase conjugation in sequence so as to realize the effect of real-time focusing of radiation energy.
Further, the energy receiving section includes: the system comprises a receiving antenna 108, a rectifier 109, an energy storage module 110 and a charging and discharging management module 111; the acceptance antenna module includes: a receiving antenna 108, a positioning transmitter 112; the receiving antenna 108 is configured to receive millimeter wave energy transmitted by the transmitting antenna array 105, one end of the receiving antenna 108 is connected to a rectifier 109, the other end of the rectifier 109 is connected to the energy storage module 110, the other end of the energy storage module 110 is connected to the charging and discharging management module 111, and the other end of the charging and discharging management module 111 is connected to the positioning transmitter 112; the rectifier 109 includes: the circuit comprises an impedance matching circuit, a filter circuit, a rectifying circuit and a voltage stabilizing circuit;
as an illustration, the energy storage module 110 includes a rechargeable lithium battery; the charging and discharging management module 111 monitors whether the energy storage module 110 is fully charged, and if the monitored electric quantity is lower than a set value, sends a charging requirement instruction to the positioning transmitter 112, and the positioning transmitter 112 sends positioning information after receiving the instruction; if the charging and discharging management module 111 monitors that the electric quantity is full, the charging to the energy storage module 110 is immediately stopped, and an instruction for stopping the charging when the electric quantity is full is sent to the positioning transmitter 112, and the positioning transmitter 112 stops sending a positioning signal when the instruction for full electric quantity is obtained; the positioning receiver 106 cannot receive the positioning information, and the millimeter wave transmitting section stops charging.
Referring to fig. 2 and 3, in an embodiment of the wireless charging system for an implantable device, the bracket 115 supports the antenna carrier plate 114, the antenna carrier plate 114 carries the positioning receiver 106 and the millimeter wave transmitting antenna array 105, all the circuits of the millimeter wave transmitting part are integrated on the power management circuit board 117, and the power management circuit board 117 is located on the back of the antenna carrier plate 114; the energy receiving part is arranged on the housing of the implanted device 119, the positioning transmitter 112 and the receiving antenna 108 are arranged on the housing 118, and the housing 118 encloses a battery 116 and a power management circuit board 117 integrated with all the circuits of the energy receiving part, wherein the battery 116 is a rechargeable lithium battery.
The invention adopts the millimeter wave wireless power supply design, positions the pacemaker through the antenna, then directionally transmits the focused millimeter wave energy to the energy receiving part through the transmitting antenna array, and further converts the millimeter wave energy into current to charge the lithium battery of the energy storage module to supply power to the pacemaker, so that the cardiac pacemaker does not need to be replaced in an operation, the risk and the economic burden of the operation of a patient are greatly reduced, and the automatic positioning charging function of the system has higher flexibility.
The invention discloses a real-time focusing microwave charging system for an implanted instrument, and relates to a millimeter wave energy transmission system for automatically tracking a receiving device and focusing energy by using a direction backtracking array technology. Compared with the phased array focusing, the digital sampling and phase shifter of the control unit is needed, the phase shifter and the digital sampling are not needed in the design, and the real-time automatic tracking receiver is realized through the heterodyne mixer. The wireless charging device is used for charging batteries of implantable devices, such as artificial organs and implantable cardiac pacemakers, and comprises: the millimeter wave transmitter comprises a millimeter wave transmitting part and a millimeter wave receiver, wherein the transmitter comprises a positioning receiver consisting of four positioning tracking antennas and a mixer phase conjugate loop and is used for tracking the position of the receiver and generating a focused waveform; the power transmitting module consists of a circular polarized rectangular antenna array and a millimeter wave power amplifier and is used for amplifying and transmitting four waveforms of which the phases are conjugated after frequency mixing so as to realize energy focusing; the receiver part comprises a receiving antenna module consisting of an implanted receiving antenna and a positioning signal source, and is used for receiving the directional positioning and focusing energy beams of the receiver; the rectification module is used for converting alternating current transmitted by the receiving antenna into direct current; the energy storage module is used for storing the direct current output by the rectifying module by using a rechargeable lithium battery; and the charge and discharge management module is used for monitoring whether the electric quantity of the energy storage module is full, and controlling the energy storage module to stop charging and/or sending an instruction of stopping charging when the electric quantity is full to the transmitting equipment if the electric quantity of the energy storage module is monitored to be full. The invention solves the charging problem of the small implanted device by the millimeter wave wireless charging technology, thereby avoiding replacing the device battery in the operation and greatly reducing the risk and the economic cost of the operation of the patient.
Claims (7)
1. A wireless charging system of an implantable instrument is characterized by comprising a millimeter wave transmitting part and an energy receiving part; the millimeter wave transmitting part is arranged outside the human body, and the energy receiving part is arranged inside the human body and is connected with the implanted device; the millimeter wave transmitting part provides electric energy for the energy receiving part in a mode of transmitting millimeter wave energy through the transmitting antenna array; the energy receiving portion is for powering an implantable device.
2. The wireless charging system of an implantable device of claim 1, wherein the millimeter wave transmitter section comprises a positioning receiver 106, a mixer phase conjugate loop, a power amplifier 104, a transmit antenna array 105; one end of the mixer phase conjugation loop is connected to the positioning receiver 106, the other end of the mixer phase conjugation loop is connected to the power amplifier 104, and the other end of the power amplifier 104 is connected to the transmit antenna array 105.
3. The wireless charging system of an implantable device according to claim 2, wherein the mixer phase conjugate loop comprises a mixer 103, a band-pass filter 107 connected to the mixer 103, and a voltage-controlled signal source 102.
4. The wireless charging system of claim 2, wherein the transmit antenna array 105 is a circularly polarized rectangular antenna array comprising four 3x1 sub-arrays for generating a sequentially phase-conjugated radiation energy carrier to achieve a real-time focusing effect of the radiation energy.
5. The wireless charging system of an implantable device of claim 1, wherein the energy receiving portion comprises a receiving antenna 108, a positioning transmitter 112, a rectifier 109, an energy storage module 110, a charging and discharging management module 111; the receiving antenna 108 is configured to receive millimeter wave energy transmitted by the transmitting antenna array 105, the receiving antenna 108 is connected to a rectifier 109, the rectifier 109 is connected to the energy storage module 110, the energy storage module 110 is connected to the charge and discharge management module 111, and the other end of the charge and discharge management module 111 is connected to the positioning transmitter 112.
6. The wireless charging system of an implantable device as claimed in claim 5, wherein the energy storage module 110 comprises a rechargeable lithium battery; the charging and discharging management module 111 monitors whether the energy storage module 110 is fully charged, and if the monitored electric quantity is lower than a set value, sends a charging requirement instruction to the positioning transmitter 112, and the positioning transmitter 112 sends positioning information after receiving the instruction; if the charging and discharging management module 111 monitors that the electric quantity is full, the charging to the energy storage module 110 is immediately stopped, and an instruction for stopping the charging when the electric quantity is full is sent to the positioning transmitter 112, and the positioning transmitter 112 stops sending a positioning signal when the instruction for full electric quantity is obtained; the positioning receiver 106 cannot receive the positioning information, and the millimeter wave transmitting section stops charging.
7. The wireless charging system for implantable devices as claimed in claim 5, wherein the positioning transmitter 112 transmits a 28GHz positioning signal to the positioning receiver 106, the band pass filter 107 transmits the filtered positioning signal to the mixer 103, the mixer 103 mixes the filtered positioning signal with the 56GHz intrinsic signal generated by the voltage-controlled millimeter wave oscillator 102 to obtain a phase-conjugated 28GHz signal, and amplifies the phase-conjugated 28GHz signal by the power amplifier 104 for power transmission, the power supply 101 supplies power to the voltage-controlled signal source 102 and the power amplifier 104, and the transmitting antenna array 105 focuses the energy carrier on the receiving antenna 108 in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210187103.8A CN114583847A (en) | 2022-02-28 | 2022-02-28 | Real-time focusing microwave charging system for implantable instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210187103.8A CN114583847A (en) | 2022-02-28 | 2022-02-28 | Real-time focusing microwave charging system for implantable instrument |
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| CN114583847A true CN114583847A (en) | 2022-06-03 |
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| CN202210187103.8A Pending CN114583847A (en) | 2022-02-28 | 2022-02-28 | Real-time focusing microwave charging system for implantable instrument |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992813A (en) * | 2017-02-16 | 2017-07-28 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | A kind of inexpensive adaptive wireless information and energy multiplex transmission system |
| CN109069846A (en) * | 2016-02-01 | 2018-12-21 | 威里利生命科学有限责任公司 | For the phase controlling array to implantable devices wireless power |
| CN213585255U (en) * | 2021-02-19 | 2021-06-29 | 国科瑞达(北京)科技有限公司 | Medical implantation instrument charging system |
| CN113452159A (en) * | 2021-07-02 | 2021-09-28 | 江苏大学 | Wireless charging system of cardiac pacemaker |
-
2022
- 2022-02-28 CN CN202210187103.8A patent/CN114583847A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109069846A (en) * | 2016-02-01 | 2018-12-21 | 威里利生命科学有限责任公司 | For the phase controlling array to implantable devices wireless power |
| CN106992813A (en) * | 2017-02-16 | 2017-07-28 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | A kind of inexpensive adaptive wireless information and energy multiplex transmission system |
| CN213585255U (en) * | 2021-02-19 | 2021-06-29 | 国科瑞达(北京)科技有限公司 | Medical implantation instrument charging system |
| CN113452159A (en) * | 2021-07-02 | 2021-09-28 | 江苏大学 | Wireless charging system of cardiac pacemaker |
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Application publication date: 20220603 |
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