Patent ID: 7447556

Claim:
A method for automating an electronic detailing of an impression for a hearing device, comprising: forming an impression of an ear canal of a patient; scanning and digitizing the impression producing a geometric model of the surface of the impression; detecting, with a software tool, a bony part or canal direction with the impression model; determining a second bend of the impression associated with a second bend of the ear canal and calculating a second bend plane and a vector normal thereto; determining an aperture of the impression associated with an aperture of the ear canal; determining a cutting plane through the aperture whose normal vector aligns with the normal vector of the second bend plane; making the determined information associated with the second bend, the aperture, canal directional vectors and the cutting plane available in a parameter table as a digitized impression data output in a form suitable for operating an automated fabrication tool to fabricate a hearing aid shell based on the determined information.