CN101234230A - Electromagnetic induction energy supplying device for implantation type medical equipment - Google Patents
Electromagnetic induction energy supplying device for implantation type medical equipment Download PDFInfo
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- CN101234230A CN101234230A CNA2007100932241A CN200710093224A CN101234230A CN 101234230 A CN101234230 A CN 101234230A CN A2007100932241 A CNA2007100932241 A CN A2007100932241A CN 200710093224 A CN200710093224 A CN 200710093224A CN 101234230 A CN101234230 A CN 101234230A
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Abstract
The invention relates to an electromagnetic induction energy-supply device used for implantation-type medical equipments, which comprises a transmitting circuit arranged in vitro and a receiving circuit implanted in vivo; the receiving circuit in vivo comprises a receiving coil composed by the spiral inductance coil with board non-core plane, a rectifier circuit and a filter circuit which are connected with the receiving coil sequentially; the transmitting circuit in vitro comprises a transmitting coil composed by the spiral inductor with board non-core plane and a launching driving circuit which is connected with the input end of the transmitting coil and comprises a power circuit, an oscillation circuit and a power amplification circuit. The device adopts the electromagnetic induction principle to transmit the transcutaneous energy from an external control module, thus realizing the energy-supply to the implantation-type medical equipments, and is applied in the implantation-type medical equipments.
Description
Technical field
The invention belongs to the Medical Instruments technical field, particularly the percutaneous power transfer power supply device of implantable medical device.
Background technology
Implantable medical device is of a great variety, and range of application is also very wide, and is common as artificial cochlea, cardiac pacemaker, deep brain stimulation device, artificial sphincter, peripheral nerve stimulation device and muscle stimulator or the like.
The main determining factor in service life of all kinds of implantable medical devices is capacity of battery.Traditional implantable medical device all adopts the lithium battery of high-energy-density to carry out energy supply, in order to prolong the service life of implantable medical device, have to reduce as much as possible and increase battery capacity when implanting the circuitry power consumption, this makes that the battery weight and the volume of the implantable medical device that uses at present are excessive, has accounted for the over half of whole implant part as the battery volume of heart pacemaker.But improve the capacity of battery in any case, implantable medical device faces the problem that electric energy exhausts all the time, causes the patient to undergo surgery once more, changes implantable medical device, brings once more misery and financial burden to sufferer.Therefore, the energy supply of implantable medical device is become the key issue of its development.
The research of implantable medical device energy-provision way at present mainly comprises: the electromagnetic induction energy supply, and the switched energization of utilizing other energy in the body, as utilize that oxygen and hydrogen carry out fuel cell reaction, temperature difference power supply in the blood, utilize the mechanical energy of organism self, or directly extract electric energy etc. from nerve.Present widely accepted energy-provision way mainly is electromagnetic induction energy supply or charging, also becomes the emphasis of Recent study.It is to generate an electromagnetic field by external primary coil that implantable medical device adopts electromagnetic induction coupling energy supply, utilize the penetration by electromagnetic fields human body skin, secondary coil is converted into unidirectional current with electromagnetic field after receiving in the body, thereby reaches the purpose to the implantable medical device power supply.
But implantable medical device is implanted in patient's body, and this just requires the implanted equipment volume little, in light weight.Therefore, body inner inductive coil volume must carry out miniaturized design and be easy to circuit integrated, and the interior secondary induction coil of body adopts solenoid coil usually in the prior art, is difficult to realize further microminiaturized and integrated.
Chinese invention patent " chargeable brain depth stimulator " (application number 200410019937.X) has provided a kind of wireless charging energy supply scheme, it adopts the traditional transformer mode, transmitting coil and receiving coil are wound on respectively on the U type magnetic core, U type magnetic core requires magnetic core to have bigger height, is difficult to practicability in frivolous small and exquisite implantable medical device.Chinese invention patent " low frequency transcutaneous energy transfer of the medical treatment device that is used to implant " (application number 200510079670.8) has proposed a kind of low frequency transcutaneous energy transfer, transmitting coil and receiving coil adopt the twisted wire coiling, twisted wire is made up of film-insulated line independently, these film-insulated lines are woven in and form a conductor together, thereby realize the coil power minimization of loss, and receiving coil adopts the twin coil parallel way to increase circuit and receives magnetic flux in the body, the receiving coil diameter reaches 2.4 inches, is difficult to be applicable to the implantable medical device of miniaturization.Chinese invention patent " wireless charging device through skin that is used for implantation medical equipment " (application number 200610011809.X) has provided a kind of wireless charging device through skin, the transmitting coil of this device and receiving coil adopt the coiling of column type magnetic core to form, and have realized the miniaturization of receiving coil substantially.But adopt the precision of coiling limited, and can't realize with the same circuit version of implantable medical device integrated.
Summary of the invention
Above-mentioned deficiency at prior art, technical problem to be solved by this invention is, provide a kind of and can satisfy that implantable medical device volume microminiaturized and integrated requirement is little, precision is high, simple and reliable, and the percutaneous wireless energy supply device with certain efficient, realize carrying out energy supply to the armarium that implants from external.
The technical scheme that the present invention solves the problems of the technologies described above is, design a kind of electromagnetic induction energy supplying device that is used for implantable medical device, this device comprises and is positioned at the external radiating circuit and the receiving circuit of implant into body, utilize electromagnetic induction principle, radiating circuit and receiving circuit adopt lax coupled modes to realize the percutaneous energy delivery, receiving circuit comprises in the body, by the receiving coil that printed board centreless planar spiral inductor coil constitutes, the current rectifying and wave filtering circuit that is connected with described receiving coil and charging circuit or load; External radiating circuit comprises, the transmitting coil that printed board centreless planar spiral inductor constitutes, the emission drive circuit that is composed in series successively by power circuit, oscillating circuit, power amplification circuit that is connected with the transmitting coil input.
Receiving circuit relaxes by electromagnetic wave and is coupled to external radiating circuit in the body, receives the electromagnetic wave that external radiating circuit is launched by receiving coil in the body, induces the signal of telecommunication of same frequency.Receiving coil adopts two-sided or the design of multilamellar stacking-type printed board planar spiral inductor; Receiving coil and transmitting coil adopt coaxial manner to place.Receiving coil can with the integrated design of printed board of rectification circuit, filter circuit, charging circuit or load etc.
The direct current supply voltage that filter circuit output is stable according to the kind difference of implantable medical device, can also can connect charging circuit directly as the implanted device power supply (DPS), is the rechargeable battery charging of implanted equipment.Receiving coil can adopt the design of small coil in external big coil, the body in external transmitting coil and the body, is coaxial manner and places, and coil adopts lax Rhizoma Nelumbinis to close mode, and PT positional tolerance is good.
Adopt printed board centreless planar spiral inductor coil design receiving coil, be used for receiving the electromagnetic energy that percutaneous transmits.This coil adopts the design of printed board centreless, has avoided machine or the low shortcoming of precision that manually winds the line, and has realized that the printed board of transcutaneous energy transfer is integrated, and by two-sided or multilamellar stacking-type PCB inductance, can also further reduce system bulk; Coil adopts lax Rhizoma Nelumbinis to close mode, and PT positional tolerance is good.Electromagnetic induction energy supplying device of the present invention can pass skin the armarium of implant into body is powered, operation once more after having avoided the energy content of battery to exhaust, prolonged the service life of implantation medical equipment, reduce the danger that the patient undergos surgery, alleviated patient's misery and financial burden;
Description of drawings
Fig. 1 electromagnetic induction energy supplying device structural representation
Fig. 2 printed board centreless planar spiral inductor coil sketch map
Receiving circuit sketch map in Fig. 3 electromagnetic induction energy supplying device body
The external radiating circuit sketch map of Fig. 4 electromagnetic induction energy supplying device
The specific embodiment
In order to realize purpose of the present invention, the present invention has adopted following technical scheme, the electromagnetic induction energy supplying device that is used for implantable medical device, comprise and be positioned at the external radiating circuit and the receiving circuit of implant into body, receiving circuit comprises in the described body: by printed board centreless planar spiral inductor the coil receiving coil that constitutes and the rectification circuit and the filter circuit that are connected with described receiving coil successively.The direct current supply voltage that filter circuit output is stable according to the kind difference of implantable medical device, can also can connect charging circuit directly as the implanted device power supply (DPS), is the rechargeable battery charging of implanted equipment.Described external radiating circuit comprises: the transmitting coil that is made of printed board centreless planar spiral inductor, and the emission drive circuit of being made up of power circuit, oscillating circuit, power amplification circuit that is connected with the transmitting coil input.
Specifically with reference to the accompanying drawings enforcement of the present invention is described in detail now.
As shown in Figure 1, be the electromagnetic induction energy supplying device system structure sketch map that is used for implantable medical device of the present invention, this device comprises and is positioned at the external radiating circuit and the receiving circuit of implant into body, external radiating circuit is positioned at 3 outsides, border, border 3 can be a human skin tissue, also can be the biomaterial or the tissue of other type.External radiating circuit comprises transmitting coil 1 and emission drive circuit 2, drives the electromagnetic wave output that transmitting coil 1 produces specified power by emission drive circuit 2.Receiving circuit is positioned at 3 inside, border in the body, separates with external radiating circuit, relaxes by electromagnetic wave and is coupled to external radiating circuit, and electromagnetic wave is produced by emission drive circuit 2 among Fig. 1, and arrow is represented its direction of propagation.Receiving circuit receives electromagnetic waves by receiving coil 4 in the body, produces stable direct current supply voltage by current rectifying and wave filtering circuit 5, and outputs to and implant charging circuit or load 6 provides electric energy for it.The present invention realizes the lax coupling of receiving circuit in external radiating circuit and the body by the mode of electromagnetic induction.In order to improve the coupling efficiency between transmitting coil and the receiving coil, satisfy implantable medical device simultaneously to the microminiaturization of receiving circuit in the body, integrated, requirement with the volume and weight that alleviates implantable medical device, the present invention adopts the transmitting coil and the receiving coil of printed board centreless planar spiral inductor, receiving coil can adopt the design of small coil in external big coil, the body in external transmitting coil and the body, and can adopt coaxial manner to place, coil adopts lax Rhizoma Nelumbinis to close mode, and PT positional tolerance is good.
The shape of described transmitting coil and receiving coil, size, live width and wire distribution distance can be optimized design according to the specific requirement of implantable medical device.As shown in Figure 2, two kinds of coil design that can adopt have been provided, the receiving coil 4 that implants can adopt the design of multilamellar stacking-type printed board planar spiral inductor, keeps higher magnetic flux received energy when reducing coil diameter, guarantees electromagnetic coupled efficient.External transmitting coil 1 can adopt larger-size printed board planar spiral inductor design, thereby can produce the electromagnetic field of higher flux density in big plane, and stable electromagnetic energy output is provided.When translation took place the 4 relative transmitting coils 1 of receiving coil in the body, receiving coil 4 induced magnetic fields did not have bigger variation, and the electromagnetic coupled situation between them does not have bigger variation yet.Therefore, compare inner-outer coil symmetry in the prior art, adopt the design of U type or column type magnetic core, the technical scheme that the present invention proposes is in reducing body in the receiving circuit volume, guaranteed the coupled stability of coil of power supply device, made percutaneous wireless energy supply process more reliable.
Be illustrated in figure 3 as receiving circuit sketch map in the electromagnetic induction energy supplying device body of the present invention, comprise receiving coil 4, filter circuit 7, rectification circuit 8 and charging circuit or load 6.Receiving coil 4 is realized electromagnetic coupled with external transmitting coil 1 through border 3, induce the signal of telecommunication of same frequency, and output to rectification circuit 7 and carry out rectification, after filter circuit 8 carries out filtering, obtain galvanic current again and press output, and utilize this DC voltage output to drive the charging circuit or the respective load of implantable medical device, thereby realize the percutaneous wireless energy transfer, implantable medical device is carried out energy supply.Consider that part is to microminiaturized and integrated requirement in the body, receiving coil can adopt integratedization of printed board of the charging circuit of the realization of printed board spiral winding and rectification circuit, filter circuit and implantable medical device or load etc., thereby has reduced the volume and weight of implantable medical device.
Be illustrated in figure 4 as the external radiating circuit sketch map of electromagnetic induction energy supplying device.Comprise transmitting coil 1, power circuit 11, oscillating circuit 10 and power amplification circuit 9.Power circuit 11 can use ac power circuit, also can use battery feed circuit to constitute.Power circuit 11 provides electric energy for external radiating circuit, power circuit produces galvanic current and presses signal input oscillating circuit 10, produce the voltage signal output of alternation, after these alternating signal input power amplifying circuit 9 processing and amplifying, alternating magnetic field by the certain power of transmitting coil 1 output guarantees that receiving coil 4 receives enough magnetic flux in the body.Oscillating circuit 10 can adopt LC resonance series compensating network to constitute, and also can adopt other resonance modes to constitute, and power amplification circuit 9 adopts the E class A amplifier As, perhaps other power amplifiers efficiently.The outfan of described power amplification circuit is connected with transmitting coil.
Electromagnetic induction energy supplying device of the present invention can pass skin the armarium of implant into body is powered, operation once more after having avoided the energy content of battery to exhaust, prolonged the service life of implantation medical equipment, reduce the danger that the patient undergos surgery, alleviated patient's misery and financial burden; Adopt printed board centreless planar spiral inductor coil, avoid machine or manually wound the line the not enough shortcoming of precision, the printed board that has realized transcutaneous energy transfer is integrated, and improve the percutaneous energy transfer efficiency by two-sided or multilamellar stacking-type PCB inductance, guarantee the miniaturization of system bulk simultaneously, effectively reduce the size and the weight of implantation medical equipment, thereby alleviate implantable medical device, improve patient's quality of life as of the harmful effect of the intravital foreign body of people to patient body.
Claims (4)
1, the electromagnetic induction energy supplying device that is used for implantable medical device, comprise and be positioned at external radiating circuit and the receiving circuit that implants, it is characterized in that receiving circuit is made of with the rectification circuit and the filter circuit that are connected with described receiving coil successively the receiving coil that printed board centreless planar spiral inductor coil constitutes in the described body; The transmitting coil that described external radiating circuit is made of printed board centreless planar spiral inductor coil, and with the placed in-line successively power amplification circuit of transmitting coil, oscillating circuit and power circuit; Receiving circuit relaxes by electromagnetic wave and is coupled to external radiating circuit in the body, receives the electromagnetic wave that external radiating circuit is launched by receiving coil in the body, induces the signal of telecommunication of same frequency.
2, electromagnetic induction energy supplying device according to claim 1 is characterized in that, receiving coil adopts small coil in external big coil, the body in described external transmitting coil and the body, and coaxial manner is placed.
3, electromagnetic induction energy supplying device according to claim 1 and 2 is characterized in that, receiving coil adopts two-sided or the design of multilamellar stacking-type printed board planar spiral inductor.
4, electromagnetic induction energy supplying device according to claim 1 and 2 is characterized in that, the printed board of receiving coil and rectification circuit, filter circuit, charging circuit or load is integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100932241A CN101234230A (en) | 2007-12-27 | 2007-12-27 | Electromagnetic induction energy supplying device for implantation type medical equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100932241A CN101234230A (en) | 2007-12-27 | 2007-12-27 | Electromagnetic induction energy supplying device for implantation type medical equipment |
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| CN101234230A true CN101234230A (en) | 2008-08-06 |
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| CNA2007100932241A Pending CN101234230A (en) | 2007-12-27 | 2007-12-27 | Electromagnetic induction energy supplying device for implantation type medical equipment |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572520B (en) * | 2009-06-15 | 2011-05-04 | 江苏技术师范学院 | Micro-power supply used inside human body |
| CN102507047A (en) * | 2011-09-30 | 2012-06-20 | 中北大学 | Non-contact passive sensor signal testing system |
| CN104283333A (en) * | 2014-09-28 | 2015-01-14 | 海龙核材科技（江苏）有限公司 | Self-adaption wireless energy supply adjusting system for percutaneous energy transmitting system |
| CN105024742A (en) * | 2015-07-27 | 2015-11-04 | 北京理工大学 | Uplink near-field communication device and method based on wireless energy supply coexistence |
| CN105596118A (en) * | 2014-11-19 | 2016-05-25 | 奥迪康医疗有限公司 | Coil assembly in an implantable medical device |
| CN106998103A (en) * | 2017-05-11 | 2017-08-01 | 深圳凌波近场科技有限公司 | Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method |
| CN107427685A (en) * | 2015-01-09 | 2017-12-01 | 艾克索尼克斯调制技术股份有限公司 | The attached peripheral device and associated method being used together with nerve stimulation charging equipment |
| CN108063499A (en) * | 2017-12-28 | 2018-05-22 | 深圳市彬讯科技有限公司 | A kind of LED light based on wireless power and remote control |
| CN109125923A (en) * | 2018-07-19 | 2019-01-04 | 贵州省人民医院 | A kind of charging pacemaker system for heart block |
| CN110380523A (en) * | 2019-07-19 | 2019-10-25 | 上海交通大学 | Wireless energy supply device for internal Miniature medical equipment |
| CN110752675A (en) * | 2014-02-28 | 2020-02-04 | 庞巴迪无接触运行有限责任公司 | Inductive power transfer device with inductive power transfer stage |
| US10682521B2 (en) | 2014-08-15 | 2020-06-16 | Axonics Modulation Technologies, Inc. | Attachment devices and associated methods of use with a nerve stimulation charging device |
-
2007
- 2007-12-27 CN CNA2007100932241A patent/CN101234230A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572520B (en) * | 2009-06-15 | 2011-05-04 | 江苏技术师范学院 | Micro-power supply used inside human body |
| CN102507047A (en) * | 2011-09-30 | 2012-06-20 | 中北大学 | Non-contact passive sensor signal testing system |
| CN110752675A (en) * | 2014-02-28 | 2020-02-04 | 庞巴迪无接触运行有限责任公司 | Inductive power transfer device with inductive power transfer stage |
| CN110752675B (en) * | 2014-02-28 | 2023-06-23 | 庞巴迪无接触运行有限责任公司 | Inductive power transfer apparatus with inductive power transfer station |
| US10682521B2 (en) | 2014-08-15 | 2020-06-16 | Axonics Modulation Technologies, Inc. | Attachment devices and associated methods of use with a nerve stimulation charging device |
| CN104283333A (en) * | 2014-09-28 | 2015-01-14 | 海龙核材科技（江苏）有限公司 | Self-adaption wireless energy supply adjusting system for percutaneous energy transmitting system |
| CN105596118B (en) * | 2014-11-19 | 2020-11-06 | 奥迪康医疗有限公司 | Coil assembly in an implantable medical device |
| CN105596118A (en) * | 2014-11-19 | 2016-05-25 | 奥迪康医疗有限公司 | Coil assembly in an implantable medical device |
| CN107427685A (en) * | 2015-01-09 | 2017-12-01 | 艾克索尼克斯调制技术股份有限公司 | The attached peripheral device and associated method being used together with nerve stimulation charging equipment |
| CN107427685B (en) * | 2015-01-09 | 2021-09-21 | 艾克索尼克斯股份有限公司 | Attachment devices for use with neurostimulation charging devices and associated methods |
| US11484723B2 (en) | 2015-01-09 | 2022-11-01 | Axonics, Inc. | Attachment devices and associated methods of use with a nerve stimulation charging device |
| CN105024742A (en) * | 2015-07-27 | 2015-11-04 | 北京理工大学 | Uplink near-field communication device and method based on wireless energy supply coexistence |
| CN106998103A (en) * | 2017-05-11 | 2017-08-01 | 深圳凌波近场科技有限公司 | Wide area free space optional position wireless energy transfer transmission antenna device and its energy transmission method |
| CN108063499A (en) * | 2017-12-28 | 2018-05-22 | 深圳市彬讯科技有限公司 | A kind of LED light based on wireless power and remote control |
| CN108063499B (en) * | 2017-12-28 | 2023-12-05 | 深圳市彬讯科技有限公司 | LED lamp based on wireless power supply and remote control |
| CN109125923A (en) * | 2018-07-19 | 2019-01-04 | 贵州省人民医院 | A kind of charging pacemaker system for heart block |
| CN110380523A (en) * | 2019-07-19 | 2019-10-25 | 上海交通大学 | Wireless energy supply device for internal Miniature medical equipment |
| CN110380523B (en) * | 2019-07-19 | 2023-01-20 | 上海交通大学 | Wireless energy supply device for in-vivo miniature diagnosis and treatment equipment |
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Open date: 20080806 |