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Attaching an implantable hearing aid microactuator

  • US 5,951,601 A
  • Filed: 03/24/1997
  • Issued: 09/14/1999
  • Est. Priority Date: 03/25/1996
  • Status: Expired due to Term
First Claim
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1. A casing and microactuator assembly adapted for implantation into a fenestration that pierces a promontory of an otic capsule bone, the casing and microactuator assembly comprising:

  • a microactuator; and

    a casing comprising;

    a) a hollow sleeve having an outer surface which has a first end configured to be received into the fenestration, the outer surface of said sleeve being configured to mate with the fenestration for securing the casing within the fenestration, said hollow sleeve also having an inner surface adapted to receive a barrel of the microactuator;

    b) a flange integral with said sleeve that projects outward from the outer surface of said sleeve about a second end of said sleeve that is located distal from the first end of said sleeve, said flange having an engagement surface for limiting a depth to which the first end of said sleeve may enter into the fenestration; and

    c) fastening means for securing the microactuator to the casing when the barrel of the microactuator is received into said sleeve.

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