Hearing-aid anchoring element

Details Hearing-aid anchoring element Hearing-aid anchoring element

2006-10-03

2006-10-03

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

C381S151000, C600S025000

Reexamination Certificate

active

07116794

ABSTRACT:
A hearing aid anchoring fixture (104) for anchoring a direct bone conduction hearing aid (108) to the skull bone (106), comprising a threaded portion (110) that has at least one cutting edge (118). Each cutting edge (118) has an adjacent cavity (120) having a volume Vc. The threaded portion (110) has a thread depth dtbeing half of the difference between the maximum outer diameter d1of the threaded portion (120) and the inner diameter d2of the thread, where dtis at least 10% of the maximum outer diameter d1of the threaded portion (110) and where dtis less than 20% of the maximum outer diameter d1of the threaded portion (110). The fixture (104) may be equipped with a flange portion (114) that has an outer diameter d3being greater than the maximum diameter d1of the threaded portion (110).

REFERENCES:
patent: 5720766 (1998-02-01), Zang et al.
patent: 6663634 (2003-12-01), Ahrens et al.
patent: 6685728 (2004-02-01), Sinnott et al.
patent: 2003/0176866 (2003-09-01), Westerkull
patent: WO 9612451 (1996-05-01), None
patent: WO 0209622 (2002-02-01), None

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