Patent · US Expired

Charging system for implantable hearing aids and tinnitus maskers

US5279292A · kind A · utility

365Cited by

12References

16Claims

0Family size

Assignee

Implex Corporation · DE

Inventors

Joachim Baumann · Borgo San Lazzaro, DE
Hans Leysieffer · Taufkirchen, DE
Guenter Hortmann · Neckartenzlingen, DE

Key dates

Filing date	Feb 13, 1992
Grant date	Jan 18, 1994
Priority date	—
Expiry date	Feb 13, 2012

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2225/67
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Charging system for implantable hearing aids and tinnitus maskers with a repeatedly rechargeable direct voltage source. The charging system comprises an implantable receiving resonant circuit as the electrical energy source for the direct voltage source to be charged and a transmitting resonant circuit located outside the body that can be inductively coupled with the receiving resonant circuit for power transmission from outside the body to inside the body. Embodiments are provided for transcutaneous and for percutaneous power transmission between the implantable receiving resonant circuit and the external transmitting resonant circuit.

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