Abstract: Among various methods, systems, and apparatuses, a number of methods are provided for forming a 3D conformance model of a particular portion of a subject's anatomy using 3D digitized imaging data and a rapid prototyping technique. One such a method includes distinguishing at least one particular structural feature associated with the exterior of the particular portion from at least one particular structural feature associated with the interior of the particular portion. Such a method can include using the conformance model to test suitability of an appliance to participate in performing an intended function that includes penetrating the interior of the particular portion through the exterior of the particular portion.

Abstract: Among various methods, systems, and apparatuses, a number of methods are provided for forming a 3D conformance model of a particular portion of a subject's anatomy using 3D digitized imaging data and a rapid prototyping technique. One such a method includes distinguishing at least one particular structural feature associated with the exterior of the particular portion from at least one particular structural feature associated with the interior of the particular portion. Such a method can include using the conformance model to test suitability of an appliance to participate in performing an intended function that includes penetrating the interior of the particular portion through the exterior of the particular portion.

Abstract: A hearing aid puller comprises a first member, and a first end piece coupled to the first member. An intermediate piece is coupled to the first member. A second member is coupled to the intermediate piece. A second end piece is coupled to the second member. The cross-sectional width of the intermediate piece and the maximum width of the second end piece are larger than the cross-sectional width of the second member. The hearing aid puller may be formed by injecting liquefied, elastically deformable material into a mold. The liquefied, elastically deformable material is cooled to form a hearing aid puller that is a single part that can be stretched to more than about twice the puller's original molded length.