WO2004049986A1 - 人工視覚システム - Google Patents
人工視覚システム Download PDFInfo
- Publication number
- WO2004049986A1 WO2004049986A1 PCT/JP2003/015566 JP0315566W WO2004049986A1 WO 2004049986 A1 WO2004049986 A1 WO 2004049986A1 JP 0315566 W JP0315566 W JP 0315566W WO 2004049986 A1 WO2004049986 A1 WO 2004049986A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vision system
- artificial vision
- patient
- signal
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- 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
- A61N1/36046—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of the eye
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/08—Devices or methods enabling eye-patients to replace direct visual perception by another kind of perception
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/0526—Head electrodes
- A61N1/0543—Retinal electrodes
-
- 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
- A61N1/37211—Means for communicating with stimulators
- A61N1/37217—Means for communicating with stimulators characterised by the communication link, e.g. acoustic or tactile
- A61N1/37223—Circuits for electromagnetic coupling
- A61N1/37229—Shape or location of the implanted or external antenna
-
- 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
- A61N1/37211—Means for communicating with stimulators
- A61N1/37252—Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
- A61N1/3727—Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data characterised by the modulation technique
Definitions
- the present invention relates to an artificial visual system for artificially providing a visual signal, and more particularly to an artificial optic disk stimulation type artificial visual system in which an electrical signal is supplied from an optic disk in which nerve fibers stretched to the retina gather to promote visual regeneration. It is related to Background art
- Retinitis pigmentosa and age-related macular degeneration cause visual impairment, and if it progresses, it may lead to blindness.
- light signals are converted into electrical signals in the visual cells, and the electrical signals are converted into pulse signals in retinal ganglion cells, and the pulse signals are transmitted to the brain.
- photoreceptor cells decrease or die, so that optical signals cannot be converted to electrical signals, and vision cannot be obtained.
- Japanese Patent Application Laid-Open Publication No. Hei 11-5066-62 describes an artificial vision system using a retinal stimulation type.
- the invention has been disclosed.
- This system embeds a microphotodiode that is sensitive to visible and infrared light below the retina, and receives the image that has been amplified and modulated by a neuronet computer via a CCD camera and received by a microphotodiode.
- the goal is to gain sight.
- the retinal stimulation described in Tokuheihei 1 1—5 0 6 6 6 2 Type generally microphones Todaiodo is arranged such damage only some of the retina, the visual field is disadvantageously extremely narrow (about 1 0 ° in the viewing angle) c for the patient, confirmed to the situation around It was difficult, especially for moving objects, to recognize them visually.
- microbubbles could be buried extensively, but surgery on the spherical retina was difficult.
- the retinal stimulation type the retina is peeled off and the electrodes are buried, so that not only the place where the electrode is placed but also the surrounding area is peeled off.
- the optic nerve stimulation type which applies electrical stimulation to the optic nerve from the surroundings, has the disadvantage that effective vision cannot be obtained because the number of electrodes cannot be set large.
- the cerebral cortex stimulation type also had a problem that the information processing system became complicated, and it was difficult to provide a stimulus close to everyday vision.
- an object of the present invention is to provide an artificial visual system which is a optic nerve head stimulation type which is a new visual reproduction technique and which can secure a wide visual field without damaging the retina.
- An artificial vision system made to achieve the above object is provided with a plurality of electrodes piercing the optic disc of the patient's eye, and optic nerves from image data obtained by an imaging device placed outside the body.
- a stimulation pulse signal generated for stimulating the stimulus, and stimulating the optic nerve with an electrical stimulation signal output from the electrode so that the patient can recognize an image from the imaging device.
- the plurality of electrodes are arbitrarily pierced one by one into the optic disc.
- the electrodes are pierced into the optic disc where the nerve fibers transmitting pulse signals of the retinal ganglion cells are concentrated, and the nerve fibers directly stimulate the optic nerve bundled. Sees from light received by retina It can handle image information in the range of the object space that can be recognized. Therefore, it is possible to ensure a wide field of view for the patient by visually recognizing the object space that can be captured by the imaging device. Also, since the electrodes are placed on the optic disc, there is no fear of causing retinal detachment without damaging the retina.
- the artificial vision system according to the present invention further includes an extracorporeal device that performs a predetermined optimization process using the image data obtained by the imaging device to generate the stimulus pulse signal. And an in-vivo device that is buried and converts the stimulation pulse signal into an electrical stimulation signal and outputs the signal from the electrode.
- the extracorporeal device includes the imaging device, an image processing device that performs a predetermined optimization process and generates a stimulus pulse signal, and a power supply.
- the image processing device adjusts parameters of a stimulation pulse emitted from the electrode.
- extracorporeal devices can be provided with many functions, and by increasing the capacity of the power supply, long-term stable use is possible. .
- the artificial vision system of the present invention is configured to transmit the signal and the electric power from the extracorporeal device to the intracorporeal device by electromagnetic induction between a primary coil that can be attached to the skin and a secondary coil that is pre-buried in the patient's body. It is desirable to do it.
- FIG. 1 is a diagram showing a use mode of the artificial vision system according to the embodiment.
- FIG. 2 is a block diagram showing a schematic configuration of the artificial vision system according to the embodiment.
- FIG. 3 is a block diagram showing the image processing device.
- FIG. 4 is a cross-sectional view of an eyeball showing a burying position of an electrode.
- FIG. 5 is a diagram showing an example of an electrical stimulation signal output from an electrode.
- FIG. 1 is a diagram showing a use mode of the artificial visual system of the present embodiment
- FIG. 2 is a block diagram showing a schematic configuration of the artificial visual system.
- the artificial vision system 1 of the present embodiment includes an extracorporeal device 2 worn by a patient when used, and an intracorporeal device 3 previously buried in the patient by surgery.
- a camera 11 is attached to a visor 5 on which the patient can be hung like glasses, so that an image of the object space in front of the patient can be captured.
- a CCD camera with tens of thousands of pixels is used as a camera.
- FIG. 3 is a block diagram showing the image processing device 12.
- the AZD converter 31 is connected to the camera 11, and the imaging circuit 32 converts an imaging signal read from the camera 11 into digital image data.
- the A / D converter 31 is further connected from the image processing unit 33 to the storage buffer memory 34 for temporarily storing the image data processed by the image processing unit 33.
- the image processing unit 33 is composed of an image processing CPU (microprocessor) and a memory in which a control program is stored.
- the image processing unit 33 performs optimization processing on the image data captured by the camera 11 and further stimulates the optic nerve. For generating a stimulus pulse signal for use.
- the image processing device 12 has a system control by a control CPU (microprocessor) and a memory storing the control program.
- LA 35 is configured.
- the system controller 35 adjusts parameters (frequency, amplitude (current amount), lighting time width, etc.) of the stimulus pulse emitted from the electrode 23 by the operation input of the adjustment dial provided in the input operation unit 36.
- parameters frequency, amplitude (current amount), lighting time width, etc.
- the adjustment dial provided in the input operation unit 36.
- separate dials are provided for adjusting the brightness and contrast of the image recognized as visual perception, and the parameters for electrical stimulation.
- the imaging circuit 32 constituting the image processing apparatus 12 controls the reading process of the imaging signal from the camera 11 and the on / off control of the power supply to the camera 11 under the control of the system controller 35. It does.
- the extracorporeal device 2 is provided with a power source 13 for supplying power to the image processing device 12 and the intracorporeal device 3, and the power source 13 and the image processing device 12 are different from each other. It is a compact size that can be carried together by the patient in a jacket or other pocket.
- the electromagnetic induction of the coil is used to transmit the processed image data and power from the extracorporeal device 2 to the intracorporeal device 3. Therefore, in the extracorporeal device 2, the primary coil 14 is connected to the image processing device 12, and the in-vivo device 3 is also provided with the secondary coil 21 corresponding to the primary coil 14.
- the in-vivo device 3 is connected to a secondary coil 21 to a receiving device 22 for receiving a stimulus pulse signal and power transmitted from the image processing device 12, and further to the receiving device 2 2.
- a plurality of electrodes 23 each having a needle-like tip are connected by a signal line 25 one by one.
- the receiving device 22 is configured by a signal processing unit that converts the received stimulation pulse signal into an electric stimulation signal output from the electrode 23, in addition to a receiving unit that receives the stimulation pulse signal and power. I have.
- Such an in-vivo device 3 is a force that is buried in the patient's body in advance by surgery. It is buried including signal line 24 between,
- the secondary coil 21 is buried in a position that is hidden by the hair so that it is not noticeable when attaching the primary coil, and the receiving device 22 is placed close to the eyes to shorten the distance from the electrode 23 Be buried.
- the secondary coil 21, the receiving device 22, and the signal line 24 are covered with a material having good biocompatibility and insulation, such as polyimide.
- FIG. 4 is a diagram schematically showing such a buried state of the electrode 23.
- FIG. 4 (a) is a horizontal sectional view of the entire eyeball
- FIG. 4 (b) is a diagram showing the optic papilla. is there.
- the signal line 25 connecting the receiving device 22 and the electrode 23 is cut to the sclera (white-eye portion) 42 that forms the outer membrane of the eyeball together with the cornea (black-eye portion) 41. It passes through the perforated hole and passes around the vitreous body 43 replaced by the intraocular perfusate.
- the signal line 25 is inserted into the eye from the nose side (the lower side in the drawing) so that the distance to the optic papilla 45 becomes shorter.
- the signal line 25 is coated with a material having good biocompatibility and insulating properties, such as polyimide, up to the electrode 23 attached to its tip. It is bundled by a tube 26 and fixed in the eye by a tack 27 or the like.
- the conventional artificial vision system only the light that reaches the micro-diode among the light entering from the cornea 41 is converted into an electric signal.
- the object space can be visually recognized only in an extremely narrow visual field.
- attention is paid to the optic nipple 45 where the nerve fibers stretched around the retina 46 are concentrated, and the electrode 23 is pierced there to stimulate the optic nerve to secure a wide visual field. ing.
- the optic disc 45 passes not only the nerve fiber but also the blood vessel 48 as shown in FIG. 4 (b), the electrode 23 is pierced so as to avoid this.
- This artificial vision system 1 has an in-vivo device 3 buried in a patient in advance by surgery, and can be used when the patient wears the extracorporeal device 2.
- the patient wears the paiza 15 out of the extracorporeal device 3 like eyeglasses, and puts the image processing device 12 and the power supply 13 that are integrally formed into the outer jacket, for example.
- the primary coil 14 is attached with an adhesive seal, the primary coil 14 is attached to the skin so as to overlap the position where the secondary coil 21 is buried.
- an image of the patient's face is captured from the camera 11 by the ON of the power supply, and the image data is sent to the image processing device 12.
- the image processing device 12 performs optimization processing of the captured image data, and generates and modulates a stimulation pulse signal for stimulating the optic nerve. That is, in the image processing device 12, under the control of the system controller 35, the imaging circuit 32 reads the image signal of the video imaged by the camera 11, and the AZD converter 31 Converted to digital image data.
- the digital image data is subjected to an optimization process according to a control program of the image processing unit 33.
- the image data on which the optimization processing has been performed is temporarily stored in the buffer memory 34, and further, a stimulation pulse signal for stimulating the optic nerve is generated.
- the power from the power source 13 is sent to the in-vivo device 3 by electromagnetic induction from the primary coil 14 to the secondary coil 21 together with a stimulation pulse signal for stimulating the optic nerve.
- the stimulation pulse signal and the power may be transmitted in a time-division manner.
- the signal for the stimulation pulse is 2
- the signal is sent to the receiving device 22 via the secondary coil 21, received by the receiving unit together with the electric power, and the signal processing unit converts the stimulation pulse signal into an electric stimulation signal output from the electrode 23. Is done.
- FIG. 5 is a diagram showing an example of the electrical stimulation signal output from the electrode 23.
- the sum A of the electrical stimulation signals output from the electrodes 23 (the sum A is normalized in pulse units and shown with the pulse heights aligned) is It consists of a combination of two waveforms.
- the waveforms of these two patterns differ from each other in the unit time t (where the unit time is the time of one stimulus signal necessary for visual reproduction).
- One waveform represents a digital value of 0, and the other waveform represents a digital value of 1.
- the combination of digital values 0 and 1 as transmission data is used while reproducing vision by using an electrical stimulus signal in which two patterns of waveform stimulus signals are combined as the sum of the electrical stimulus signals. It is meant to be expressed. Note that this electrical stimulus signal is merely an example, and the stimulus is not limited to this as long as it stimulates visual reproduction.
- the electrical stimulus signal output from the electrode 23 stimulates the cerebrum from the optic papilla 45 into which the electrode 23 is pierced, through the optic nerve 47, and the patient receives an object space imaged by the force camera 11 Can be visually recognized.
- an electrical stimulation signal is applied to the optic papilla 45 where the nerve fibers stretched to the retina 46 are concentrated. Because the image information can be recognized in the range, the patient can perform visual recognition in a wide field of view.
- the retina is not damaged unlike the conventional retinal stimulation type, and there is no problem of causing retinal detachment.
- a radial optic disc incision for central retinal vein occlusion has been established, and it is possible to establish a surgical procedure based on this.
- a plurality of electrodes are installed so as to pierce the optic disc of the patient's eye, and the optic nerve is stimulated from image data obtained by an imaging device placed outside the body. Based on the stimulation pulse signal generated in the above, the stimulus is applied to the optic nerve by the electrical stimulation signal output from the electrode, so that the image from the imaging device can be recognized by the patient. It has become possible to provide an artificial vision system that is of the optic nerve head stimulation type, which can be used as a method, and that can secure a wide field of view without damaging the retina.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Ophthalmology & Optometry (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Prostheses (AREA)
- Electrotherapy Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/537,266 US8265764B2 (en) | 2002-12-05 | 2003-12-04 | Artificial vision system |
| AU2003289193A AU2003289193A1 (en) | 2002-12-05 | 2003-12-04 | Artificial visual system |
| DE10393794T DE10393794T5 (de) | 2002-12-05 | 2003-12-04 | Künstliches Sehsystem |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002-354330 | 2002-12-05 | ||
| JP2002354330A JP4204066B2 (ja) | 2002-12-05 | 2002-12-05 | 人工視覚システム |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004049986A1 true WO2004049986A1 (ja) | 2004-06-17 |
Family
ID=32463338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/015566 Ceased WO2004049986A1 (ja) | 2002-12-05 | 2003-12-04 | 人工視覚システム |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8265764B2 (ja) |
| JP (1) | JP4204066B2 (ja) |
| AU (1) | AU2003289193A1 (ja) |
| DE (1) | DE10393794T5 (ja) |
| WO (1) | WO2004049986A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7974699B2 (en) | 2006-03-24 | 2011-07-05 | Nidek Co., Ltd. | Vision regeneration assisting device |
| US8249716B2 (en) | 2006-12-27 | 2012-08-21 | Nidek Co., Ltd. | Sight regeneration assisting device |
| CN103816006A (zh) * | 2014-02-20 | 2014-05-28 | 深圳市上示科技有限公司 | 一种非植入性经人体体表激发盲人视觉感受的设备 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7734352B2 (en) * | 2005-09-19 | 2010-06-08 | Second Sight Medical Products, Inc. | Sub-threshold stimulation to precondition neurons for supra-threshold stimulation |
| US20080183242A1 (en) * | 2007-01-29 | 2008-07-31 | Nidek Co., Ltd. | Electrical stimulation method for vision improvement |
| EP2167186B1 (en) | 2007-06-14 | 2016-10-19 | Second Sight Medical Products, Inc. | Video processing unit for a visual prosthetic apparatus |
| US8798756B2 (en) * | 2007-11-07 | 2014-08-05 | Second Sight Medical Products, Inc. | Video processing unit for a visual prosthetic apparatus |
| USD599313S1 (en) * | 2007-08-15 | 2009-09-01 | Second Sight Medical Products, Inc. | Video processing unit for a visual prosthetic apparatus |
| US8195303B2 (en) * | 2007-11-07 | 2012-06-05 | Second Sight Medical Products, Inc. | Video processing unit for a visual prosthetic apparatus |
| US8195302B2 (en) * | 2007-11-07 | 2012-06-05 | Second Sight Medical Products, Inc. | Video processing unit for a visual prosthetic apparatus |
| US8771349B2 (en) * | 2008-02-19 | 2014-07-08 | Ira Hyman Schachar | Apparatus and method for preventing glaucomatous optic neuropathy |
| US9254385B2 (en) * | 2008-05-14 | 2016-02-09 | Second Sight Medical Products, Inc. | Visual prosthesis for phosphene shape control |
| JP5545962B2 (ja) * | 2010-02-16 | 2014-07-09 | 株式会社ニデック | 視覚再生補助装置 |
| US9539145B2 (en) * | 2012-02-10 | 2017-01-10 | Nokia Technologies Oy | Methods and apparatus for representing user output data by transcutaneous stimulation of a user's optic nerve |
| AU2014218716B2 (en) | 2013-02-22 | 2017-10-19 | Boston Scientific Neuromodulation Corporation | Neurostimulation system having increased flexibility for creating complex pulse trains |
| US9174053B2 (en) | 2013-03-08 | 2015-11-03 | Boston Scientific Neuromodulation Corporation | Neuromodulation using modulated pulse train |
| US11357442B2 (en) | 2015-05-12 | 2022-06-14 | Diagnosys LLC | Combined stimulator and electrode assembly for mouse electroretinography (ERG) |
| US10820824B2 (en) | 2015-05-12 | 2020-11-03 | Diagnosys LLC | Combined stimulator and bipolar electrode assembly for mouse electroretinography (ERG) |
| US10893823B2 (en) | 2015-11-10 | 2021-01-19 | Diagnosys LLC | Method and apparatus for the assessment of electrophysiological signals |
| CN105816302A (zh) * | 2016-04-18 | 2016-08-03 | 相汇网络科技(杭州)有限公司 | 一种智能导盲眼镜系统 |
| WO2018184213A1 (zh) * | 2017-04-07 | 2018-10-11 | 林伯刚 | 用于刺激视神经纤维的装置 |
| CN108686301B (zh) * | 2017-04-07 | 2022-02-15 | 林伯刚 | 用于刺激视神经纤维的装置 |
| US11497911B2 (en) | 2018-07-18 | 2022-11-15 | Diagnosys LLC | Electrically evoked response (EER) stimulator/amplifier combination |
| EP3860703A1 (en) | 2018-10-01 | 2021-08-11 | Biovisics Medical, Inc. | System and methods for controlled electrical modulation for vision therapy |
| US11305118B2 (en) | 2018-11-30 | 2022-04-19 | Biovisics Medical, Inc. | Head worn apparatuses for vision therapy |
| EP3941572B1 (en) | 2019-03-21 | 2025-12-03 | The Board of Trustees of the Leland Stanford Junior University | Systems and methods for artificial sight prosthetics |
| US11471680B2 (en) | 2019-04-10 | 2022-10-18 | Biovisics, Inc. | Systems and interfaces for ocular therapy |
| EP4464367A3 (en) | 2019-06-14 | 2025-01-22 | i-LUMEN Scientific, Inc. | Wearable medical device |
| US12023498B2 (en) | 2019-07-12 | 2024-07-02 | Biovisics Medical, Inc. | Ocular therapy modes and systems |
| USD1061894S1 (en) * | 2020-10-09 | 2025-02-11 | I-Lumen Scientific, Inc. | Medical device |
| CN114558225A (zh) * | 2022-02-18 | 2022-05-31 | 合肥科飞康视科技有限公司 | 一种视知觉训练系统 |
| US12589243B2 (en) | 2022-10-21 | 2026-03-31 | I-Lumen Scientific, Inc. | Ocular devices and controller interfaces for ocular therapy |
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2002
- 2002-12-05 JP JP2002354330A patent/JP4204066B2/ja not_active Expired - Fee Related
-
2003
- 2003-12-04 DE DE10393794T patent/DE10393794T5/de not_active Withdrawn
- 2003-12-04 AU AU2003289193A patent/AU2003289193A1/en not_active Abandoned
- 2003-12-04 US US10/537,266 patent/US8265764B2/en not_active Expired - Fee Related
- 2003-12-04 WO PCT/JP2003/015566 patent/WO2004049986A1/ja not_active Ceased
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3449768A (en) * | 1966-12-27 | 1969-06-17 | James H Doyle | Artificial sense organ |
| JPS53105089A (en) * | 1977-02-23 | 1978-09-12 | Kiyoshi Yamakawa | Clearly seeing device |
| US5674263A (en) * | 1995-04-26 | 1997-10-07 | Yamamoto; Hiroshi | Optic nerve image output device and method |
| WO1996039221A1 (en) * | 1995-06-06 | 1996-12-12 | Vincent Chow | Multi-phasic microphotodiode retinal implant and adaptive imaging retinal stimulation system |
| WO2001074444A1 (en) * | 2000-03-31 | 2001-10-11 | Optobionics Corporation | Multi-phasic microphotodetector retinal implant with variable voltage and current capability and apparatus for insertion |
| WO2002040095A1 (en) * | 2000-11-16 | 2002-05-23 | Polyvalor S.E.C. | Body electronic implant and artificial vision system thereof |
| WO2002064072A1 (fr) * | 2001-02-15 | 2002-08-22 | Nidek Co., Ltd. | Dispositif auxiliaire permettant de recouvrer la vue |
| WO2002080828A1 (en) * | 2001-03-30 | 2002-10-17 | Nidek Co., Ltd. | Artificial eye system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7974699B2 (en) | 2006-03-24 | 2011-07-05 | Nidek Co., Ltd. | Vision regeneration assisting device |
| US8249716B2 (en) | 2006-12-27 | 2012-08-21 | Nidek Co., Ltd. | Sight regeneration assisting device |
| CN103816006A (zh) * | 2014-02-20 | 2014-05-28 | 深圳市上示科技有限公司 | 一种非植入性经人体体表激发盲人视觉感受的设备 |
| CN103816006B (zh) * | 2014-02-20 | 2016-01-20 | 深圳市上示科技有限公司 | 一种非植入性经人体体表激发盲人视觉感受的设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003289193A1 (en) | 2004-06-23 |
| JP4204066B2 (ja) | 2009-01-07 |
| JP2004181100A (ja) | 2004-07-02 |
| DE10393794T5 (de) | 2005-11-03 |
| US8265764B2 (en) | 2012-09-11 |
| US20060058857A1 (en) | 2006-03-16 |
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