Patent · US Active

Stimulation electrode with porous coating

US7603169B2 · kind B2 · utility

3Cited by

4References

13Claims

0Family size

Assignee

W. C. Heraeus GmbH · DE

Inventors

Frank Krüger · Könnern, DE
Heiko Specht · Hanau, DE
Hans Jürgen WACHTER · Neuenstadt am Kocher, DE
Oliver Keitel · Aschaffenburg, DE

Key dates

Filing date	Mar 17, 2006
Grant date	Oct 13, 2009
Priority date	—
Expiry date	Oct 18, 2027

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61N1/056
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An electrode for medical applications is provided with a PtIr coating which is at least partly porous. The coating contains more than 20% iridium by weight and at least 100 ppm Pt. The coated areas of the electrode exhibit an electrochemical capacitance of more than 5 mF/cm2 in physiological saline solution at 37° C. and a measurement frequency of 100 mHz. A sputter process is suitable for this purpose, in which a porous platinum-iridium layer is deposited on the electrode by simultaneously sputtering at least one iridium target and at least one platinum target.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.