Stimulation electrode with porous coating

Details Stimulation electrode with porous coating Stimulation electrode with porous coating

2006-03-17

2009-10-13

Layno, Carl H. (Department: 3766)

Surgery

Diagnostic testing

Cardiovascular

C600S372000, C607S115000

Reexamination Certificate

active

07603169

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/cm2in 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.

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J. Riedmuller et al. “Improvement of Stimulation and Sensing Performance of Bipolar Pacemaker Leads”,Proceedings of the 14thannual conference of the IEEE/EMBSI, pp. 2364-2365, (1992).

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