Planar electrode

Details Planar electrode Planar electrode

1995-06-07

1998-09-22

Cohen, Lee S.

Surgery

Diagnostic testing

Structure of body-contacting electrode or electrode inserted...

600373, 607116, 204403, 4352871, A61B 504

Patent

active

058107258

ABSTRACT:
A planar electrode which enables multi-point simultaneous stimulation and recording of nerve cells over a long time is provided, which also has excellent response property. An ITO film is evaporated on the whole surface of an insulating substrate of the hard glass, and the ITO film is etched so that the central portion of each electrode is located on each intersection of 8.times.8 lattices, the center-to-center distances of nearest electrodes of each electrode are equal, and a lead wire is stretched radially. Then, for an insulating layer, negative photo-sensitive polyimide is spin-coated, and an insulating layer pattern is exposure-formed so that a 50 .mu.ms square hole is produced at the center of each electrode. Furthermore, to the exposed portion of each electrode (that is, the inside of the 50 .mu.ms square), Ni is evaporated in a film thickness of 500 nm, which is followed by evaporating gold (50 nm) and platinum black (about 1 .mu.m ). The contact with the external circuit of the section near the end opposite to the electrode of the lead wire was coated with gold and nickel.

REFERENCES:
patent: 4461304 (1984-07-01), Kuperstein
patent: 4677989 (1987-07-01), Robblee
patent: 4781798 (1988-11-01), Gough
patent: 4969468 (1990-11-01), Byers et al.
patent: 4971853 (1990-11-01), Chaiken et al.
patent: 5215088 (1993-06-01), Normann et al.
patent: 5388577 (1995-02-01), Hubbard
patent: 5563067 (1996-10-01), Sugihara et al.
Gross, G.W. et al.;Ttransparent indium-tin oxide electrode patterns for extracellular, multisite recording. Journal of Neuroscience Methods, 15 (1985) pp. 243-252.
Jimbo, Y. et al.; Electrical Stimulation of Cultured Neural Cells. ., Ann. Int'l. Conf. of the IEEE Engineering in Medicine and Biology Society, vol. 12, No. 4 (1990), pp. 1741-1742.
May et al.; A Tantalum-on-Sapphire Microelectrode Array, IEEE Transactions on Electron, Devices, vol. ED-26 No. 12 (Dec. 1979) pp. 1932-1993.
Mercer et al.; Photolithographic Fabrication and Physiological Performance of Microelectrode Arrays for Neural Stimulation, IEEE Transactions on Bioemedical Engineering, vol. BME-25, No.6 (Nov. 1978) pp. 494-500.
Novak, J. et al., "Recording from the Aplysia Abdominal Ganglion with a Planar Microelectrode Array," IEEE. Transactions on Biomedical Engineering, vol. BME-33. No. 2, Feb 1986, pp. 196-202.
Patent Abstracts of Japan, vol. 016, No. 536 (P-1449), Nov 6, 1992.
Peckerar, M. et al., Passive Microelectrode Arrays for Rcording of Neural Signals: A Simplified Fabrication Process, Review of Scientific nstruments, vol. 62, No. 9, Sept. 1991, New York , pp. 2276-2280.
Pine, J., "Recording Action Potentials from Cultured Neurons with Extracellular Microcircuit Electrode," Journal of Neuroscience Methods, vol. 2, No. 1, Feb. 1980, pp. 19-31.
Thomas et al, "A Miniature Microelectrode . . . Cells", Experimental Cell Research, 74,pp. 61-66, 1972.

Affiliated with

Also associated with

Rating

Planar electrode does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Planar electrode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planar electrode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1618223