Patent · US Active

Selective parylene coating for cardiac pacemaker electrodes

US8355802B2 · kind B2 · utility

3Cited by

4References

9Claims

0Family size

Assignee

HERAEUS PRECIOUS METALS GMBH & CO. KG · DE

Inventors

Oliver Keitel · Aschaffenburg, DE
Frank Krüger · Könnern, DE
Michael Pönitz · Hanau, DE

Key dates

Filing date	Jun 17, 2009
Grant date	Jan 15, 2013
Priority date	—
Expiry date	Nov 16, 2031

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB05D3/145
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A stimulation electrode is produced having a porous film layer and being partially coated with an insulating parylene (polyparaxylylene) film, whose insulating film has a dielectric breakdown voltage of greater than 100 V. Parylene is deposited on the entire surface of a porous film coating and then partially removed again by plasma. After the partial removal of the parylene, this porous film still has a capacitance of greater than 15 mF/cm2 in a physiological NaCl solution at a frequency of 0.1 Hz. For the stimulation electrode, the transition from the insulating film to the porous film is formed so that the film thickness of the parylene film decreases continuously. In this way, a stimulation electrode having a porous film layer and being partially coated with an insulating parylene film is provided, whose electrode on the non-insulating parylene film-coated surface has a capacitance of greater than 15 mF/cm2 in a physiological NaCl solution at a frequency of 0.1 Hz and whose insulating film advantageously has a dielectric breakdown voltage of greater than 100 V.

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