Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Reexamination Certificate
2006-11-07
2006-11-07
Jastrazb, Jeffrey R. (Department: 3762)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
Reexamination Certificate
active
07133724
ABSTRACT:
This invention is for directly modulating a beam of photons onto the retinas of patients who have extreme vision impairment or blindness. Its purpose is to supply enough imaging energy to retinal prosthetics implanted in the eye which operate essentially by having light (external to the eye) activating photoreceptors, or photo-electrical material. The invention provides sufficient light amplification and does it logarithmically. While it has sufficient output light power, the output light level still remains at a safe level. Most preferred embodiments of this invention provide balanced biphasic stimulation with no net charge injection into the eye. Both optical and electronic magnification for the image, as for example, using an optical zoom lens, is incorporated. Otherwise, it would not be feasible to zoom in on items of particular interest or necessity. Without proper adjustment, improper threshold amplitudes would obtain, as well as uncomfortable maximum thresholds. Therefore, to adjust for these, a way of proper adjustment for the threshold amplitudes and maximum comfortable thresholds is provided. Furthermore, to the extent that individual stimulation sites in the retina give different color perceptions, upon stimulation, then colors of the viewed scene is correlated with specific stimulation sites to provide a certain amount of color vision.
REFERENCES:
patent: 4611596 (1986-09-01), Wasserman
patent: 4677989 (1987-07-01), Robblee
patent: 5957958 (1999-09-01), Schulman et al.
patent: 6230057 (2001-05-01), Chow et al.
Greenberg Robert J.
Schulman Joseph H.
Seidman Abraham N.
Dunbar Scott B.
Jastrazb Jeffrey R.
Lendvai Tomas
Second Sight Medical Products, Inc.
LandOfFree
Logarithmic light intensifier for use with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Logarithmic light intensifier for use with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Logarithmic light intensifier for use with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3667267