Method of improving electrode tissue interface
US8239036B2 · kind B2 · utility
10Cited by
10References
16Claims
0Family size
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Key dates
| Filing date | Jul 8, 2011 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Jul 8, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/0543
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A critical element of a retinal prosthesis is the stimulating electrode array, which is placed in close proximity to the retina. It is via this interface that a retinal prosthesis electrically stimulates nerve cells to produce the perception of light. The impedance load seen by the current driver consists of the tissue resistance and the complex electrode impedance. The results show that the tissue resistance of the retina is significantly greater than that of the vitreous humor in the eye. Circuit models of the electrode-retina interface are used to parameterize the different contributors to the overall impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.