Patent ID: 7609259

Claim:
A method for defining a selective fill region for a hearing aid shell, comprising: loading data into a processor of a processor-based system, said data representing a three-dimensional description of a hearing aid shell shape having a generally hollow interior and an exterior surface; presenting a visual display of the hearing aid shell shape on a display device, said visual display giving said hearing aid shell shape a visual appearance with an appearance characteristic; operating a user interface of said processor to define and display, in said visual display, a boundary surface that intersects the displayed hearing aid shell shape; automatically in said processor or by further operation of said user interface, designating a region of the displayed hearing aid shell shape bounded by the boundary surface and the exterior surface as being a fill region; through said processor, automatically modifying the appearance characteristic display of the designated fill region; providing an indication to the processor of a portion of the three-dimensional description of said hearing aid shell that is occupied by the fill region; in said processor, automatically modifying said data to include a three-dimensional description of said portion of said three-dimensional description of said hearing aid shell shape that is occupied by said fill region, thereby producing modified data, and entering said modified data into a data file; and storing the data file in a storage medium of the system.