Electrode construction for implantable medical electrical leads
US8862245B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2012 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Mar 6, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49204
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable electrode for electrical stimulation of a body, for example, being a component of an implantable medical electrical lead, is preferably in the form of a coiled conductor wire, wherein the wire is formed by a tantalum (Ta) core directly overlaid with a platinum-iridium (Pt—Ir) cladding. When a maximum thickness of the Pt—Ir cladding defines a cladded zone between an outer, exposed surface of the electrode and the Ta core, a surface of the Ta core encroaches into the cladded zone by no more than approximately 50 micro-inches. The tantalum core may be cold worked to improve surface quality or formed from a sintered and, preferably, grain stabilized tantalum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.