Microelectrodes in an ophthalmic electrochemical sensor
US9055902B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2013 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Sep 19, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/3271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An eye-mountable device includes an electrochemical sensor embedded in a polymeric material configured for mounting to a surface of an eye. The electrochemical sensor includes a working electrode, a reference electrode, and a reagent that selectively reacts with an analyte to generate a sensor measurement related to a concentration of the analyte in a fluid to which the eye-mountable device is exposed. The working electrode can have at least one dimension less than 25 micrometers. The reference electrode can have an area at least five times greater than an area of the working electrode. A portion of the polymeric material can surround the working electrode and the reference electrode such that an electrical current conveyed between the working electrode and the reference electrode is passed through the at least partially surrounding portion of the transparent polymeric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.