Patent · US Expired

Transmission system for implanted hearing aids

US4696287A · kind A · utility

144Cited by

3References

6Claims

0Family size

Assignee

HORTMANN GmbH · DE

Inventors

Guenther Hortmann · Neckartenzlingen, DE
Klaus Kunick · Stuttgart, DE
Hans Fenner · Evilard, CH

Key dates

Filing date	Feb 26, 1986
Grant date	Sep 29, 1987
Priority date	—
Expiry date	Feb 26, 2006

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61N1/0541
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An implanted hearing aid for deaf patient having an intact auditory nerve includes an implanted receiver unit provided with a receiver coil surrounding patient's auditory channel. An external transmitter unit is electrically connected to a separate transmitter coil embedded in a fitting piece insertable into the auditory channel in the range of the receiving coil so as to establish an optimum inductive coupling. A microphone is supported on an ear yoke and connected both to the transmitter and the receiver units. The receiver unit is electrically connected to an excitation electrode mounted on cochlea in patient's ear.

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