CN104739547A - Biological-energy electrical cochlea - Google Patents
Biological-energy electrical cochlea Download PDFInfo
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- CN104739547A CN104739547A CN201310731867.XA CN201310731867A CN104739547A CN 104739547 A CN104739547 A CN 104739547A CN 201310731867 A CN201310731867 A CN 201310731867A CN 104739547 A CN104739547 A CN 104739547A
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Abstract
The invention provides a biological-energy electrical cochlea which can be implanted into a living body. The biological-energy electrical cochlea is provided with an in-vivo portion and an in-vitro portion, wherein the in-vitro portion comprises an external microphone, a sound processor and a transmission coil pulse generator, and the in-vivo portion comprises a stimulation receiver and a multiple-channel electrode array. The in-vivo portion is further provided with a power generating portion, wherein the power generating portion comprises a power generating body, adjusting ends, an output electrode, an electric energy storage unit and a packaging layer. The power generating body is wound around the aorta, is of a multiple-layer film structure and comprises a piezoelectric material layer located in a central layer, a first electrode layer and a second electrode layer, and the first electrode layer and the second electrode layer are respectively located on two sides of the piezoelectric material layer. The adjusting ends are located at two ends of the power generating body. The output electrode delivers electric energy to the electric energy storage unit. The packaging layer covers the surfaces of the power generating body, the two adjusting ends, the output electrode and the electric energy storage unit. The implanted biological-energy electrical cochlea can be used for the lifetime without battery replacement.
Description
Technical field
The present invention relates to a kind of cochlear implant, belong to medical instruments field.
Background technology
Cochlear implant is a kind of signal of telecommunication utilizing speech processor sound to be converted to certain coding form, then carrys out the medical electronic devices of restoration and reconstruction deafness patient auditory function by the direct excited acoustic nerve of electrode system implanted.In cochlear implant implanted prosthetics in the past 30 years, development rapidly.At present in worldwide, have and receive cochlear implant implantation more than 40000 routine severe patients with sensorineural hearing loss.The full-implantation type cochlear implant researched and developed in recent years is not owing to hindering the outward appearance in accepting implantation person completely, favourable to the physical and mental health of patient especially child patient, further increase people to the acceptance of cochlear implant and confidence level, be expected to benefit more deafness patient.
But, for full-implantation type cochlear implant, once battery failures or energy exhaustion, just need to change battery by operating mode.This both caused physiology and spiritual misery to patient, also can increase the financial burden of patient and family thereof.
Summary of the invention
For solving the problem, the invention provides a kind of bioenergy cochlear implant, it is characterized in that, there is part and outer body in body, outer body comprises external microphone, Sound Processor Unit and transmission coil pulse generator, and body inside point comprises stimulates receptor and multi-channel electrode array.In body, part also has Power Generation Section, and Power Generation Section comprises generating main body, adjustable side, output electrode, energy storage unit and encapsulated layer.Wherein, generating main body is used for holding aorta, the mechanical energy produced during to gather aortectasia, and is converted into electric energy.Generating main body is multi-layer film structure, comprises the piezoelectric material layer being positioned at central core, and lays respectively at the first electrode layer and the second electrode lay of piezoelectric material layer both sides.Adjustable side is positioned at the two ends of generating main body, for regulating the length of generating main body.Output electrode is used for electric energy to flow to energy storage unit.Energy storage unit is used for storage of electrical energy and powers for Sound Processor Unit and multi-channel electrode array.Encapsulated layer is covered in the surface of generating main body, two adjustable sides, output electrode and energy storage unit.
In addition, bioenergy cochlear implant of the present invention can also have such feature: wherein, and piezoelectric material layer contains nanoscale piezoelectric, and nanoscale piezoelectric is any one in piezoquartz, piezoelectric ceramics and organic piezopolymer.
In addition, bioenergy cochlear implant of the present invention can also have such feature: wherein, and piezoquartz, piezoelectric ceramics, organic piezopolymer can be the single or multiple lift structure of nanoscale piezoelectric.
In addition, bioenergy cochlear implant of the present invention can also have such feature: also comprise, current rectifying and wave filtering circuit, be connected between energy storage unit and output electrode.
In addition, bioenergy cochlear implant of the present invention can also have such feature: wherein, and the fixed form of adjustable side uses that surgical thread is sewed up, any one in titanium clamp pincers folder or binding agent bonding.
In addition, bioenergy cochlear implant of the present invention can also have such feature: wherein, one end of adjustable side is single latch, the tip of this latch is level and smooth and towards the outside of generating main body, the other end of adjustable side is draw-in groove, the side, inside of draw-in groove has the teeth groove matched with latch, and opposite side is plane, and latch and draw-in groove fasten.
In addition, bioenergy cochlear implant of the present invention can also have such feature: wherein, wherein, and described encapsulated layer is using the flexible macromolecule insulant of good biocompatibility as encapsulating material.
In addition, bioenergy cochlear implant of the present invention can also have such feature: Power Generation Section is less than 140mmHg to aortal pressure.
Invention effect and effect
Bioenergy cochlear implant of the present invention, the energy produced during by implanting nanoscale piezoelectric to gather aortectasia is also converted into electric energy, as its energy source.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.And owing to not re-using traditional battery as power supply, the volume and weight of outer body therefore significantly can be reduced.Product is worn more comfortable.
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.
Aortal outer wall is paperwrapped in owing to present invention employs soft loop configuration, and can fixing quantity native system to aortal pressure, the mechanical energy produced when therefore both can gather aortectasia efficiently, fully, can not produce obviously impact to cardiac function again.
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 aorta wall deformation produces effectively can be conducted to piezoelectric.
In addition, the adjustable side adjustable generating main body at generating main body two ends is utilized to hold aortal tensity, thus the deformation degree of adjustable piezoelectric material and output electricity.Again owing to not containing piezoelectric and electrode layer in adjustable side, therefore use sutures or the clamping timing of titanium can not damage the structure of generating main body.
Further, because generating main body of the present invention is positioned at aorta outside, 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 schematic diagram of the bioenergy cochlear implant of the embodiment of the present invention one;
Fig. 2 is the interior part of bioenergy cochlear implant body of the embodiment of the present invention one and the schematic diagram of outer body;
Fig. 3 is the schematic diagram of the generating main body of the embodiment of the present invention one;
Fig. 4 is the internal structure profile of the generating main body of the embodiment of the present invention one;
Fig. 5 is the partial enlarged drawing in main body A region of generating electricity in Fig. 4;
Fig. 6 is that the main body that generates electricity in the embodiment of the present invention one is installed on Supraaortic sectional view;
Fig. 7 is that in the embodiment of the present invention four, adjustable side is the schematic diagram of reciprocal latch structure; And
Fig. 8 is the circuit diagram of the embodiment of the present invention one.
Detailed description of the invention
Below with reference to the accompanying drawings the specific embodiment of the present invention is described,
< embodiment one >
Fig. 1 is the schematic diagram of the bioenergy cochlear implant of the embodiment of the present invention one, and Fig. 2 is the interior part of bioenergy cochlear implant body of the embodiment of the present invention one and the schematic diagram of outer body.As shown in Figure 1, 2, bioenergy cochlear implant 10 comprises part 20 and outer body 16 in body, outer body 16 comprises external microphone (not shown), Sound Processor Unit (not shown) and transmission coil pulse generator 203, body inside point to comprise and receives stimulator 201 and multi-channel electrode array 202 and Power Generation Section 200, Power Generation Section 200 comprises generating main body 11, current rectifying and wave filtering circuit 14 and output electrode 12.
Generating main body 11 is resilient loop configuration, can be surrounded on aorta 18 around, and generating main body 11 inside is nanoscale piezoelectric, and aortal deformation can be utilized to produce electric energy.Being connected to current rectifying and wave filtering circuit 14 after the output electrode 12 of generating main body 11 makes the electric energy of generating main body 11 output become stable.After energy storage unit 13 is connected to current rectifying and wave filtering circuit 14, for store electrical energy, and used by the outer body 16 that wire 15 supplies bioenergy cochlear implant.Outer body 16 has the hook 19 after can hanging over ear.When heart 17 is beated, the outer wall of aorta 18 is expanded due to the periodic pressure of blood flow and bounces back, thus makes generating main body 11 that deformation occur.
Fig. 3 is the schematic diagram of the generating main body of the embodiment of the present invention, as shown in Figure 3, the original state of generating main body 11 is the shape of open loop, respectively having an adjustable side 23, needing two adjustable sides to link together when being arranged on aorta outer wall at the two ends of annular opening.Encapsulated layer 22 is coated with at the outer surface of generating main body 11 and adjustable side 23.Generating main body has two output electrodes 12, exports for the electric energy that generating main body is produced.
Fig. 4 is the internal structure profile of the generating main body of the embodiment of the present invention, as shown in Figure 4, the inside of generating main body 11 is multi-layer film structure, comprise the nanoscale piezoelectric 111 being positioned at main center's layer, and lay respectively at the first electrode layer 112 and the second electrode lay 113 of nanoscale piezoelectric 111 both sides.Encapsulated layer 22 adopts the flexible macromolecule insulant with biocompatibility, is covered in the surface of generating main body 11 and output electrode 12, and extends to form each adjustable side 23, both sides to the outside of generating main body 11.
Fig. 5 is the partial enlarged drawing in main body A region of generating electricity in Fig. 4, as shown in Figure 5, is positioned at the nanoscale piezoelectric 111 of generating main body 11 central core, is the nanowire array structure of extensive Parallel Design, effectively can improves output voltage.First electrode layer 112 and the second electrode lay 113 adopt the high layer material of the conductivity such as gold or silver to make, and are connected with nanoscale piezoelectric 111.
When implanting in vivo, can generating main body 11 be implanted to around aorta by operating method and hold aorta.By adjustment adjustable side 23, generating main body 11 is fitted tightly, to gather the energy that aorta deformation produces with aortal outer wall again.
The workload of heart may be increased aortal excessive compressing, therefore can to measure the main body 11 that generates electricity to aortal pressure, avoid it to exert an adverse impact to heart by interim placement force sensor between generating main body 11 and aorta wall.
Because the inside of adjustable side 23 is not containing piezoelectric material layer and electrode layer, therefore when using sutures or titanium folder is closed the both sides of adjustable side 23, can not cause damage to generating main body 11.
Fig. 6 is that the main body that generates electricity in the embodiment of the present invention is installed on Supraaortic sectional view.The work process of bioenergy cochlear implant of the present invention is described below in conjunction with Fig. 1 and Fig. 6.
As shown in figures 1 to 6, the main body 11 that generates electricity is surrounded on aorta 18.When heart 17 shrinks, the impact of blood flow makes aorta 18 expand, as shown in Figure 5, aorta wall 45 can produce a pressure F to generating main body 11, make piezoelectric material layer 111 that deformation occur, thus forming electric potential difference and generation current at its two ends, electric current conducts to output electrode 12 by the first electrode layer 112 and the second electrode lay 113, then by entering energy storage unit 13 after current rectifying and wave filtering circuit 14.Energy storage unit 13 again by supply of electrical energy to Sound Processor Unit and multi-channel electrode array.
Fig. 8 is the circuit diagram of the embodiment of the present invention.As shown in Figure 8, generating main body 11 is connected with current rectifying and wave filtering circuit 14, the electric energy that generating main body 11 produces charges to energy storage unit 13 after current rectifying and wave filtering circuit 14, and energy storage unit 13 can be used for for the Sound Processor Unit in electrical appliance and the present embodiment and multi-channel electrode array are powered.
< embodiment two >
In the present embodiment, arranging of the generating shape of main body 11 and adjustable side 23 is in the same manner as in Example 1, and difference part is in the present embodiment, and the piezoelectric material layer of generating main body adopts nanoscale piezoceramic material.
Another one difference part is, in the present embodiment, adjustable side 23 adopts titanium clamping fixed.
< embodiment three >
In the present embodiment, arranging of the generating shape of main body and adjustable side is in the same manner as in Example 1, and difference part is in the present embodiment, and the piezoelectric material layer of generating main body adopts piezopolymer, and adjustable side adopts the mode of binding agent bonding to be fixed.
< embodiment four >
In the present embodiment, arranging of the generating shape of main body and adjustable side is in the same manner as in Example 1, difference part is in the present embodiment, as shown in Figure 7, one end of adjustable side 61 is single latch, crown is level and smooth and towards the outside of generating main body, to prevent the tissues such as crown impair cardiac or aorta.The other end of adjustable side 61 is draw-in groove, and the side, inside of draw-in groove has the teeth groove matched with latch, and opposite side is plane.When aorta outer wall is fixed in Power Generation Section, slowly latch is inserted draw-in groove, use micro pressure sensor to detect generating main body to the pressure of aorta outer wall simultaneously, slowly tighten up latch, until this pressure reaches 120mmHg-140mmHg.
< embodiment five >
The difference of the present embodiment and front several embodiment is that the shape that the Sound Processor Unit of outer body and mike are integrated into capsule is placed in external auditory meatus, instead of hangs over outside auricle.The current supply line of the energy storage unit of generating main body stretches out for Sound Processor Unit is powered from ear.The burden of user can be alleviated so further, improve comfort level.
Certain bioenergy cochlear implant of the present invention is not limited to the design described in above embodiment, and its piezoelectric material layer, electrode layer all can adopt various existing appropriate materials to make with encapsulated layer.
Claims (9)
1. a bioenergy cochlear implant, is characterized in that, comprising:
Part and outer body in body,
Described outer body comprises external microphone, Sound Processor Unit and transmission coil pulse generator, and described body inside point comprises stimulates receptor and multi-channel electrode array,
Wherein, in described body, part also has Power Generation Section, and described Power Generation Section comprises generating main body, adjustable side, output electrode, energy storage unit and encapsulated layer,
Described generating main body is used for holding aorta, the mechanical energy produced during to gather aortectasia, and is converted into electric energy,
Described generating main body is multi-layer film structure, comprises the piezoelectric material layer being positioned at central core, and lays respectively at the first electrode layer and the second electrode lay of described piezoelectric material layer both sides,
Described adjustable side is positioned at the two ends of described generating main body, for regulating the length of described generating main body,
Described output electrode is used for electric energy to flow to energy storage unit,
Described energy storage unit is used for storage of electrical energy and powers for described Sound Processor Unit and described multi-channel electrode array,
Described encapsulated layer is covered in the surface of described generating main body, described two adjustable sides, described output electrode and described energy storage unit.
2. bioenergy cochlear implant 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.
3. bioenergy cochlear implant as claimed in claim 2, is characterized in that:
Wherein, described piezoquartz, piezoelectric ceramics, organic piezopolymer can be the single or multiple lift structure of nanoscale piezoelectric.
4. bioenergy cochlear implant as claimed in claim 1, is characterized in that:
Wherein, described power storage portion is miniature rechargeable battery or electric capacity.
5. bioenergy cochlear implant as claimed in claim 1, is characterized in that, also comprise:
Current rectifying and wave filtering circuit, is connected between described energy storage unit and described output electrode.
6. bioenergy cochlear implant as claimed in claim 1, is characterized in that:
Wherein, the fixed form of described adjustable side uses any one in surgical thread stitching, titanium clamp pincers folder or binding agent bonding.
7. bioenergy cochlear implant as claimed in claim 1, is characterized in that:
Wherein, one end of described adjustable side is single latch, and the tip of this latch is level and smooth and towards the outside of generating main body, the other end of described adjustable side is draw-in groove, the side, inside of draw-in groove has the teeth groove matched with described latch, and opposite side is plane, and described latch and described draw-in groove fasten.
8. bioenergy cochlear implant 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.
9. bioenergy cochlear implant as claimed in claim 1, is characterized in that:
Described Power Generation Section is less than 140mmHg to aortal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310731867.XA CN104739547B (en) | 2013-12-26 | 2013-12-26 | Bioenergy cochlear implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310731867.XA CN104739547B (en) | 2013-12-26 | 2013-12-26 | Bioenergy cochlear implant |
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| Publication Number | Publication Date |
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| CN104739547A true CN104739547A (en) | 2015-07-01 |
| CN104739547B CN104739547B (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310731867.XA Expired - Fee Related CN104739547B (en) | 2013-12-26 | 2013-12-26 | Bioenergy cochlear implant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107847735A (en) * | 2015-07-15 | 2018-03-27 | Med-El电气医疗器械有限公司 | The contact conductor for avoiding electrod-array from being migrated from cochlea |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491471A (en) * | 2008-01-23 | 2009-07-29 | 上海耳蜗医学科技有限公司 | Artificial cochlea device |
| CN101816599B (en) * | 2010-04-12 | 2012-12-05 | 杭州诺尔康神经电子科技有限公司 | Electronic cochlea and stimulating pulse generating method thereof |
| CN101862228B (en) * | 2010-06-13 | 2013-04-24 | 杭州诺尔康神经电子科技有限公司 | Artificial cochlea |
| CN102068337B (en) * | 2011-01-31 | 2012-09-19 | 上海力声特医学科技有限公司 | Micro-strip filter-based cochlear implant |
| CN102868319B (en) * | 2012-09-12 | 2016-03-09 | 北京工业大学 | Based on human motion energy energy regenerating and utilize device |
| CN203693839U (en) * | 2013-12-26 | 2014-07-09 | 中国人民解放军第二军医大学 | Bio-energy electronic cochlea |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107847735A (en) * | 2015-07-15 | 2018-03-27 | Med-El电气医疗器械有限公司 | The contact conductor for avoiding electrod-array from being migrated from cochlea |
| CN107847735B (en) * | 2015-07-15 | 2021-03-09 | Med-El电气医疗器械有限公司 | Electrode lead to avoid migration of electrode array from cochlea |
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