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1. WO1996039221 - MULTI-PHASIC MICROPHOTODIODE RETINAL IMPLANT AND ADAPTIVE IMAGING RETINAL STIMULATION SYSTEM

Publication Number WO/1996/039221
Publication Date 12.12.1996
International Application No. PCT/US1996/008734
International Filing Date 04.06.1996
Chapter 2 Demand Filed 06.01.1997
IPC
A61F 9/08 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
9Methods 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
08Devices or methods enabling eye-patients to replace direct visual perception by another kind of perception
A61N 1/05 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
02Details
04Electrodes
05for implantation or insertion into the body, e.g. heart electrode
A61N 1/36 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
18Applying electric currents by contact electrodes
32alternating or intermittent currents
36for stimulation, e.g. heart pace-makers
CPC
A61F 9/08
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
9Methods 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
08Devices or methods enabling eye-patients to replace direct visual perception by another kind of perception
A61N 1/05
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
02Details
04Electrodes
05for implantation or insertion into the body, e.g. heart electrode
A61N 1/0543
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
02Details
04Electrodes
05for implantation or insertion into the body, e.g. heart electrode
0526Head electrodes
0543Retinal electrodes
A61N 1/36046
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
1Electrotherapy; Circuits therefor
18Applying electric currents by contact electrodes
32alternating or intermittent currents
36for stimulation
36046of the eye
Applicants
  • CHOW, Vincent [US]/[US]
  • CHOW, Alan, Y. [US]/[US]
Inventors
  • CHOW, Vincent
  • CHOW, Alan, Y.
Agents
  • STEVENSON, Robert, W.
Priority Data
08/465,76606.06.1995US
08/642,70203.06.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTI-PHASIC MICROPHOTODIODE RETINAL IMPLANT AND ADAPTIVE IMAGING RETINAL STIMULATION SYSTEM
(FR) IMPLANT RETINIEN A BASE DE MICROPHOTODIODES A PLUSIEURS PHASES ET SYSTEME DE SIMULATION RETINIENNE PAR IMAGERIE ADAPTATIVE
Abstract
(EN)
An artificial retina device and a method for stimulating and modulating its function is diclosed. The device is comprised of plural multi-phasic microphotodiode subunits, which, when surgically implanted into the subretinal space, may allow useful formed articifial vision to develop. One device, called an MMRI-4 (8), is configured in a flattened cubic shape and transduces light into electric currents to stimulate the retina. The MMRI-4 comprises two subunits in a PiN configuration (10a) and two subunits in an NiP configuration (10b), both present on each of the flattened sides, thereby allowing induced sensations regardless of which side faces incident light. Filter layers (20, 22) disposed on the PiN and NiP configurations allow for visible and infrared light respectively to induce currents. An Adaptive Imaging Retinal Stimulation System (AIRES), with a Projection and Tracking Optical System (PTOS), which may be worn as a headset, is also disclosed.
(FR)
L'invention porte sur un dispositif rétinien artificiel et sur un procédé de stimulation et de modulation de son fonctionnement, comportant une série de sous-unités constituées de microphotodiodes à plusieurs phases qui, après implantation chirurgicale dans l'espace subrétinien, peuvent permettre le développement d'une vision artificielle utile. L'un des dispositifs, dit MMRI-4 (8), qui se présente sous la forme d'un cube aplati, transforme la lumière en courants électriques qui stimulent la rétine. Le MMRI-4 comporte deux sous-unités dans une configuration PiN (10a) et deux sous-unités dans une configuration NiP (10b) placées sur chacun des côtés aplatis, ce qui permet de donner naissance à des sensations induites quelque soit la face latérale recevant la lumière incidente. Des couches filtrantes (20, 22) placées sur les configurations PiN et NiP permettent la production de courants à partir du spectre visible et des IR. L'invention porte également sur un système de stimulation rétinienne par imagerie adaptative (AIRES) équipé d'un système optique de projection et de poursuite (PTOS) pouvant se présenter sous forme de lunettes.
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