Patent · US Active

Method and device for intracochlea impedance measurement

US9173585B2 · kind B2 · utility

16Cited by

6References

22Claims

0Family size

Assignee

Cochlear Limited · AU

Inventors

Kostas Tsampazis · Chatswood, AU
Paul Michael Carter · Parramatta, AU
Herbert Mauch · Weil am Rhein, DE

Key dates

Filing date	Aug 25, 2008
Grant date	Nov 3, 2015
Priority date	—
Expiry date	Dec 24, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61N1/36185
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

This method of determining an intracochlea tissue impedance comprises using at least two stimulating electrodes to apply an electrical stimulus to intracochlea tissue. A voltage caused by the stimulus is measured between two measuring electrodes distinct from the stimulating electrodes. From the voltage a stimulus-response characteristic of tissue between the two measuring electrodes is determined. This allows the tissue/electrode interface impedance and potential and the tissue impedance and potential to be uniquely determined. In turn, modiolus currents can be estimated in monopolar stimulation mode. Also provided is automated initiation of re-mapping of the device when tissue characteristics change.

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