Back to results
US 2020/0046239 A1Published application
Opto-electrical device and method for artifact reduction
AssigneeNeuroNexus Technologies, Inc.
InventorsJohn P. Seymour, Jongeun Jeon, Nicholas Hewitt, Abeer Khurram
Life of this patent
Estimating the term…
Abstract
An optical electrode having a plurality of electrodes, including a recording electrode having a roughened surface and an optical light source configured to emit light, wherein at least a portion of the light impinges on the recording electrode. Also disclosed are methods of producing an optical electrode and an opto-electronic neural interface system.
Claims17
An optical electrode device, comprising:
- a) a carrier;
- b) a plurality of electrodes supported on the carrier, at least one of which is a recording electrode configured to sense electrical signals from tissue, wherein the recording electrode comprises:
- i) an electrically conductive material selected from the group consisting of gold, platinum, iridium, platinum-iridium, titanium nitride, and iridium oxide;
- and
- ii) a roughened external material having a back side attached to the electrically conductive material to thereby provide the recording electrode with a roughened external surface forming a front side of the roughened external material, wherein the roughened external material is selected from the group consisting of PEDOT/PSS (poly(3,4-ethylene-dioxythiophene)/poly(styrene sulfonate), iridium oxide, glass nanospheres, glass microspheres, poly-styrene nanospheres, and poly-styrene microspheres, and
- iii) wherein the roughened external surface of the recording electrode has an average roughness as an arithmetic average of absolute values of a series of maximum and minimum vertical height measurements in nm on the roughened external surface that is greater than 10 nm;
- and
- c) a light source supported by the carrier, the light source configured to emit light that is directed at the roughened external surface of the recording electrode.
5 more elements
A method of producing an optical electrode with a reduced photoelectrochemical artifact, comprising the steps of:
- a) providing a carrier;
- b) supporting a plurality of electrodes on the carrier, wherein at least one of the electrodes is configured as a recording electrode comprising:
- i) an electrically conductive material selected from the group consisting of gold, platinum, iridium, platinum-iridium, titanium nitride, and iridium oxide;
- and
- ii) a roughened external material having a back side attached to the electrically conductive material to thereby provide the recording electrode with a roughened external surface forming a front side of the roughened external material, wherein the roughened external material is selected from the group consisting of PEDOT/PSS (poly(3,4-ethylene-dioxythiophene)/poly(styrene sulfonate), iridium oxide, glass nanospheres, glass microspheres, poly-styrene nanospheres, and poly-styrene microspheres;
- c) supporting a light source on the carrier, and configuring the light source to emit light that is directed at the roughened external surface of the recording electrode,
- d) wherein the roughened external surface of the recording electrode has an average roughness as an arithmetic average of absolute values of a series of maximum and minimum vertical height measurements in nm on the roughened external surface of the recording electrode that is greater than 10 nm.
4 more elements
An optical electrode device, comprising:
- a) a carrier;
- b) a plurality of electrodes supported on the carrier, wherein:
- i) at least one of the electrodes is a stimulation electrode configured to provide electrical stimulation to tissue, and wherein the stimulation electrode has an unroughened external surface with an average roughness that is less than 10 nm;
- and
- ii) at least one of the electrodes is a recording electrode configured to sense electrical signals from tissue, and wherein the recording electrode has a roughened external surface comprising:
- A) an electrically conductive material selected from the group consisting of gold, platinum, iridium, platinum-iridium, titanium nitride, and iridium oxide;
- and
- B) a roughened external material having a back side attached to the electrically conductive material to thereby provide the recording electrode with a roughened external surface forming a front side of the roughened external material, wherein the roughened external material is selected from the group consisting of PEDOT/PSS (poly(3,4-ethylene-dioxythiophene)/poly(styrene sulfonate), glass nanospheres, glass microspheres, poly-styrene nanospheres, and poly-styrene microspheres, and
- C) wherein the roughened external surface of the recording electrode has an average roughness as an arithmetic average of absolute values of a series of maximum and minimum vertical height measurements in nm on the roughened external surface of the recording electrode that is greater than 10 nm;
- and
- c) a light source supported by the carrier, the light source configured to emit light that is directed at the roughened external surface of the recording electrode.
8 more elements
Dependencies are inferred from the claim text.