CN104739543A - Self-powered electronic retina - Google Patents
Self-powered electronic retina Download PDFInfo
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- CN104739543A CN104739543A CN201310733263.9A CN201310733263A CN104739543A CN 104739543 A CN104739543 A CN 104739543A CN 201310733263 A CN201310733263 A CN 201310733263A CN 104739543 A CN104739543 A CN 104739543A
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- main body
- generating main
- electronic retina
- self energizing
- power generation
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Abstract
The invention provides a self-powered electronic retina. The self-powered electronic retina is characterized by comprising a photosensitive unit, a signal processing unit, a stimulating electrode and a power generation unit. The power generation unit comprises a power generation body, an output unit, an electrical energy storage unit, a fixing unit and an encapsulation layer. The power generation body is of a multilayer film structure and comprises a piezoelectric material layer arranged on the center of the power generation body and electrode layers arranged on both sides of the piezoelectric material layer. The output unit is connected to the electrode layers to output the current generated by the power generation body to the electrical energy storage unit. The electrical energy storage unit is used for storing electrical energy and supplying the signal processing unit and the stimulating electrode with power. The fixing unit is arranged on the edge of the power generation body and used for fixing the power generation body to the epicardium. The encapsulation layer covers the surfaces of the power generation body, the output unit, the electrical energy storage unit and the fixing unit. The self-powered electronic retina needs no battery replacement and can achieve lifetime use.
Description
Technical field
The present invention relates to a kind of self energizing electronic retina, belong to medical instruments field.
Background technology
The Eye disease causing the mankind to lose vision has multiple, if the anopsia caused by crystalline lens can reach the object recovering vision by the crystalline lens that operating substitution is new, but, if the visual deterioration caused by retinopathy even blind, simple surgical operation is just helpless.In this case, if patient is only retina there occurs pathological changes, and optic nerve is still intact, can reach the object improving vision by electronic retina.The electronic eye entering clinical trial at present has photosensitive part usually, microprocessor and stimulating electrode.Because electronic retina needs the eye implanting people, position is special, and therefore the selection of its electric supply installation is very careful.Existing electric supply installation is the subcutaneous placement receiving coil at head, carries out wireless power by the power supply coil in the external world to it, and the problem of this method is that after power-on time has been grown, coil can generate heat.In addition, even if be provided with rechargeable battery for preserving the electric energy of coil at inside of human body, need too once to charge at set intervals, this is for very inconvenient blind person.
Summary of the invention
For solving the problem, the invention provides a kind of self energizing electronic retina, it is characterized in that, comprising: photographic department, signal processing part, stimulating electrode and Power Generation Section.Wherein, Power Generation Section comprises generating main body, output unit, energy storage unit, fixed cell and encapsulated layer.Wherein, generating main body is multi-layer film structure, comprises the piezoelectric material layer being positioned at generating main center, and is positioned at the electrode layer of piezoelectric material layer both sides, and generating main body is by being attached at heart surface to gather cardiac energy for generation of electric energy.Output unit is connected with electrode layer, flows to energy storage unit for electric current generating main body produced.Energy storage unit is used for storage of electrical energy and powers for signal processing part and stimulating electrode.Fixed cell is positioned at the edge of generating main body, for generating main body is fixed on visceral pericardium.Encapsulated layer is covered in the surface of generating main body, output unit, energy storage unit and fixed cell.
In addition, in self energizing electronic retina of the present invention, can also have such feature: wherein, the shape of generating main body is tetragon, and fixed cell is positioned at the centre on two narrow limits of tetragon.
In addition, in self energizing electronic retina of the present invention, can also have such feature: wherein, the shape of generating main body is triangle, and fixed cell is positioned at leg-of-mutton three summits.
In addition, in self energizing electronic retina of the present invention, can also have such feature: wherein, the shape of generating main body is Long Circle.
In addition, in self energizing electronic retina of the present invention, can also have such feature: wherein, piezoelectric material layer contains nanoscale piezoelectric, and nanoscale piezoelectric is any one in piezoquartz, piezoelectric ceramics and organic piezopolymer.
In addition, in self energizing electronic retina of the present invention, can also have such feature: wherein, piezoquartz is at least one deck zinc oxide nano-wire array.
In addition, in self energizing electronic retina of the present invention, can also have such feature: wherein, piezoquartz, piezoelectric ceramics, organic piezopolymer can be the single or multiple lift structure of nanoscale piezoelectric.
In addition, in self energizing electronic retina of the present invention, can also have such feature: wherein, output unit has output electrode and current rectifying and wave filtering circuit.
In addition, in self energizing electronic retina of the present invention, can also have such feature: wherein, encapsulated layer is using the flexible macromolecule insulant of good biocompatibility as encapsulating material.
The effect of invention and effect
According to self energizing electronic retina of the present invention, because generating main body is directly attached at heart surface, therefore, it is possible to effectively the contraction of heart and diastole are made nanoscale piezoelectric generation deformation, thus be converted into electric energy.As long as therefore heartbeat, the present invention can utilize the bioenergy of patient self and provide electric energy, eliminates the necessity using battery as power supply, solves after the energy content of battery is exhausted and needs operation to change the problem of battery.
In addition, because generating main body of the present invention adopts point fixing mode that electricity generation system is fixed on visceral pericardium, effectively can gather the energy that heart movement produces on the one hand, also can not produce significantly impact to the contraction of heart and diastole campaign on the other hand.
Because the present invention adopts nanoscale piezoelectric as generating main body, not only effectively the bioenergy in body can be converted into electric energy, and volume is small, is more suitable for et al. Ke.
In addition, because the present invention adopts the flexible macromolecule insulant of good biocompatibility to encapsulate, therefore generating main body and internal milieu can be isolated, also the pressure that the heart-shaped sell of one's property is raw effectively can be conducted to piezoelectric.
Further, because generating main body of the present invention is positioned at heart exterior, directly do not contact with blood, thus there is not the risk of thrombosis and apoplexy (myocardial infarction or cerebral infarction).
Accompanying drawing explanation
Fig. 1 is the generating main body of the self energizing electronic retina of the embodiment of the present invention one is the schematic diagram of tetragon;
Fig. 2 is the partial section of the generating main body of the embodiment of the present invention one;
Fig. 3 is the generating main body of the embodiment of the present invention two is leg-of-mutton schematic diagram;
Fig. 4 is the generating main body of variation of the present invention is oblong schematic diagram;
Fig. 5 is the circuit diagram of the embodiment of the present invention; And
Fig. 6 is the schematic diagram that the electronic retina of the embodiment of the present invention is installed on ophthalmic.
Detailed description of the invention
The detailed description of the invention of self energizing electronic retina of the present invention is described below in conjunction with accompanying drawing,
< embodiment one >
Fig. 1 is the generating main body of self energizing electronic retina in embodiment 1 is the schematic diagram of tetragon, and as shown in Figure 1, self energizing electronic retina 20 has Power Generation Section 200, photographic department 181, signal processing part 182, stimulating electrode 183.Wherein, Power Generation Section 200 comprises generating main body 21, energy storage unit 16, fixed cell 22 and output unit, and output unit has output electrode 14 and current rectifying and wave filtering circuit 15.
Generating main body 21 is rectangle, two narrow limits of rectangle respectively has a fixed cell 22, for generating main body 11 is fixed on visceral pericardium with long axis direction along systaltic direction.Fixed cell 22 is made up of encapsulated layer, and the inside of fixed cell 22 does not have the electrification structure such as electrode or piezoelectric, therefore can not destroy the electrification structure of generating main body 21 when using suture to fix.Because generating main body have employed rectangle, and installation direction is consistent with systaltic direction, therefore can well gather the mechanical energy that heart contraction produces.
When implanting generating main body, heart is manifested by operating mode, generating main body arranged along systaltic direction and be sewn on visceral pericardium by fixed part, generating main body and visceral pericardium are fitted, and now generating electricity main body can along with the generation deformation of beating of heart.
Generating main body 21 remainder except fixing with fixed cell 22 is not fixed, and is beneficial in systaltic process, make generating main body 21 better deformation can occur.Output electrode 14 exports to energy storage unit 16 for electric energy generating main body 21 produced, before energy storage unit 16, also there is current rectifying and wave filtering circuit 15, electric current for exporting output electrode 14 carries out rectifying and wave-filtering, thus makes the electric current of output more stable.Energy storage unit is 16 to power for signal processing part 182.Fig. 6 is the schematic diagram that the electronic retina of the embodiment of the present invention is installed on ophthalmic, as shown in Figure 6, photographic department 181 is implanted to amphiblestroid position, experience the light from the external world, and optical signal is converted into the signal of telecommunication, signal processing part 182 pairs of signals of telecommunication process, and are modulated into the signal of telecommunication being suitable for optic nerve, stimulated by stimulating electrode 183 pairs of optic nervies, thus make patient produce vision.Fig. 2 is the sectional view of the generating main part of the self energizing electronic retina of the embodiment of the present invention, as shown in Figure 2, generating main body 21 is multi-layer film structure, its central core is piezoelectric material layer 31, piezoelectric material layer 31 is made up of ZnO nanowire array, the both sides of piezoelectric material layer 31 are respectively electrode layer 32 and electrode layer 33, and electrode layer 32 and electrode layer 33 are connected with output electrode 14 (not shown) respectively.Encapsulated layer 34 is positioned at the outside of electrode layer electrode layer 32 and electrode layer 33, and encapsulated layer 34 has good insulating properties and biocompatibility.
Fig. 5 is the circuit diagram of the embodiment of the present invention, as shown in Figure 5, generating main body 21 is connected with current rectifying and wave filtering circuit 15, the electric energy that generating main body 21 produces charges to energy storage unit 16 after current rectifying and wave filtering circuit 15, and energy storage unit 16 can be used for for the electronic retina in electrical appliance and the present embodiment is powered.
< embodiment two >
Fig. 3 is the Power Generation Section of the embodiment of the present invention is leg-of-mutton self energizing electronic retina schematic diagram, as shown in Figure 3, the generating main body 12 of self energizing electronic retina 11 of the present invention is triangle, leg-of-mutton each vertex position all has a fixed cell 13, output electrode 14 is connected with electrode layer (see figure 2), current rectifying and wave filtering circuit 15 is connected with output electrode 14, and energy storage unit 16 is connected to current rectifying and wave filtering circuit 15 afterwards for storing the electric energy that Power Generation Section produces.
Fig. 2 is the sectional view of the self energizing electronic retina of the embodiment of the present invention, as shown in Figure 2, the central core of generating main body 12 is piezoelectric material layer 31, piezoelectric material layer 31 is made up of ZnO nanowire array, the both sides of piezoelectric material layer 31 are respectively electrode layer 32 and electrode layer 33, and electrode layer 32 is connected with output electrode 14 respectively with electrode layer 33.Encapsulated layer 34 is positioned at the outside of electrode layer electrode layer 32 and electrode layer 33.
As shown in Figure 3, the shape of generating main body 12 is triangle, when being installed on visceral pericardium, utilizes the fixed cell 13 be positioned on an Atria summit generating main body 12 to be fixed on the visceral pericardium of myocardial wall.And each limit leg-of-mutton of the main body 12 that generates electricity is not fixed, so both can not limit contraction and the diastole of heart, also contribute to piezoelectric material layer along with the motion generation deformation of heart thus produce electric energy.
Generating main body 12 is made into the energy that leg-of-mutton advantage is more to gather heartbeat, this is because not only have horizontal contraction and diastole in the process of heartbeat, also longitudinal contraction and diastole is had, when adopting leg-of-mutton shape, a leg-of-mutton summit is set to the direction towards the apex of the heart, and two other summit is set to parallel with the direction of heart cross-direction shrinkage, no matter being heart cross-direction shrinkage is like this longitudinal contraction, generating main body 12 all can be driven to be out of shape.Therefore the leg-of-mutton shape energy that can more utilize heartbeat to produce than the shape of tetragon.
Fixed cell 13 is extended in corresponding position by encapsulated layer and is formed, and damage piezoelectric material layer and electrode layer when sewing up, not containing piezoelectric and electrode material, therefore can be avoided in the inside of fixed cell 13.
Energy storage unit is 16 to power for signal processing part 182.Photographic department 181 is implanted to amphiblestroid position, experiences the light from the external world, and optical signal is converted into the signal of telecommunication, signal processing part 182 pairs of signals of telecommunication process, and be modulated into the signal of telecommunication being suitable for optic nerve, stimulated by stimulating electrode 183 pairs of optic nervies, thus make patient produce vision.
< variation >
This variation is compared with embodiment one, and except the shape of the main body that generates electricity is except Long Circle, arranging of other is all identical.As shown in Figure 4, the shape of generating main body 42 is Long Circle, and on oblong two summits, place has fixed cell 41, and the shape of generating main body 42 is that oblong advantage is do not have sharp-pointed corner, contributes to alleviating the damage to heart.
Certainly, the shape of the generating main body of self energizing electronic retina of the present invention can be various shape, is not limited only to triangle, tetragon and Long Circle in above-mentioned two embodiments.
Claims (9)
1. a self energizing electronic retina, is characterized in that, comprising:
There is photographic department, for experiencing extraneous light;
Signal processing part, for being converted to the signal of telecommunication by the optical signal of photographic department;
Stimulating electrode, the stimulating electrical signal optic nerve produced for utilizing photographic department; And
For the Power Generation Section that described signal processing part and described stimulating electrode are powered,
Wherein, described Power Generation Section comprises generating main body, output unit, energy storage unit, fixed cell and encapsulated layer,
Described generating main body is multi-layer film structure, comprises the piezoelectric material layer being positioned at described generating main center, and is positioned at the electrode layer of piezoelectric material layer both sides, described generating main body by being attached at heart surface to gather the energy of heartbeat and to be converted into electric energy,
Described output unit is connected with described electrode layer, flows to energy storage unit for electric current generating main body produced,
Described energy storage unit is used for storage of electrical energy and powers for described signal processing part,
Described fixed cell is positioned at the edge of described generating main body, for generating main body is fixed on visceral pericardium,
Described encapsulated layer is covered in the surface of described generating main body, described output unit, described energy storage unit and described fixed cell.
2. self energizing electronic retina as claimed in claim 1, is characterized in that:
Wherein, the shape of described generating main body is tetragon, and described fixed cell is positioned at the centre on two narrow limits of tetragon.
3. self energizing electronic retina as claimed in claim 1, is characterized in that:
Wherein, the shape of described generating main body is triangle, and described fixed cell is positioned at leg-of-mutton three summits.
4. self energizing electronic retina as claimed in claim 1, is characterized in that:
Wherein, the shape of described generating main body is Long Circle.
5. self energizing electronic retina as claimed in claim 1, is characterized in that:
Wherein, described piezoelectric material layer contains nanoscale piezoelectric, and described nanoscale piezoelectric is any one in piezoquartz, piezoelectric ceramics and organic piezopolymer.
6. self energizing electronic retina as claimed in claim 5, is characterized in that:
Wherein, described piezoquartz is at least one deck zinc oxide nano-wire array.
7. self energizing electronic retina as claimed in claim 5, is characterized in that:
Wherein, described piezoquartz, piezoelectric ceramics, organic piezopolymer can be the single or multiple lift structure of nanoscale piezoelectric.
8. self energizing electronic retina as claimed in claim 1, is characterized in that:
Wherein, output unit has output electrode and current rectifying and wave filtering circuit.
9. self energizing electronic retina as claimed in claim 1, is characterized in that:
Wherein, described encapsulated layer is using the flexible macromolecule insulant of good biocompatibility as encapsulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733263.9A CN104739543B (en) | 2013-12-26 | Self energizing electronic retina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733263.9A CN104739543B (en) | 2013-12-26 | Self energizing electronic retina |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104739543A true CN104739543A (en) | 2015-07-01 |
| CN104739543B CN104739543B (en) | 2016-11-30 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1764622B2 (en) * | 1965-10-13 | 1981-01-08 | N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) | Implantable pacemaker |
| WO2004073138A1 (en) * | 2003-02-12 | 2004-08-26 | Medtronic Inc. | Self-powered implantable element |
| CN1728526A (en) * | 2004-12-21 | 2006-02-01 | 中国科学院长春光学精密机械与物理研究所 | The spontaneous electric generator and preparation method thereof that declines of chip |
| CN101454963A (en) * | 2006-03-17 | 2009-06-10 | 耐力节奏股份有限公司 | Energy generating systems for implanted medical devices |
| CN101548912A (en) * | 2009-04-24 | 2009-10-07 | 中国人民解放军第三军医大学 | Flexible micro-electrode chip stimulating visual cortex through dura mater and the preparation method thereof |
| WO2010005915A2 (en) * | 2008-07-06 | 2010-01-14 | Synecor Llc | Energy harvesting for implanted medical devices |
| CN102202563A (en) * | 2008-09-23 | 2011-09-28 | 因库博实验室有限责任公司 | Energy harvesting-mechanism for medical devices |
| CN203693837U (en) * | 2013-12-26 | 2014-07-09 | 中国人民解放军第二军医大学 | Self-energized electronic retina |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1764622B2 (en) * | 1965-10-13 | 1981-01-08 | N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) | Implantable pacemaker |
| WO2004073138A1 (en) * | 2003-02-12 | 2004-08-26 | Medtronic Inc. | Self-powered implantable element |
| CN1728526A (en) * | 2004-12-21 | 2006-02-01 | 中国科学院长春光学精密机械与物理研究所 | The spontaneous electric generator and preparation method thereof that declines of chip |
| CN101454963A (en) * | 2006-03-17 | 2009-06-10 | 耐力节奏股份有限公司 | Energy generating systems for implanted medical devices |
| WO2010005915A2 (en) * | 2008-07-06 | 2010-01-14 | Synecor Llc | Energy harvesting for implanted medical devices |
| CN102202563A (en) * | 2008-09-23 | 2011-09-28 | 因库博实验室有限责任公司 | Energy harvesting-mechanism for medical devices |
| CN101548912A (en) * | 2009-04-24 | 2009-10-07 | 中国人民解放军第三军医大学 | Flexible micro-electrode chip stimulating visual cortex through dura mater and the preparation method thereof |
| CN203693837U (en) * | 2013-12-26 | 2014-07-09 | 中国人民解放军第二军医大学 | Self-energized electronic retina |
Non-Patent Citations (2)
| Title |
|---|
| 张莹 等: ""人工视网膜芯片的能量供给装置设计研究进展"", 《生物医学工程学杂志》 * |
| 王星 等: ""基于电刺激的外层型人工视网膜的研究进展"", 《生物医学工程学杂志》 * |
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Granted publication date: 20161130 Termination date: 20171226 |