CPC H04R 25/652 (2013.01) [H04R 25/658 (2013.01); H04R 2225/023 (2013.01); H04R 2225/025 (2013.01); H04R 2225/77 (2013.01)] | 20 Claims |
1. A hearing aid shell for containing electronic components of a hearing aid, wherein the hearing aid shell is constructed by:
3D printing a part made of a hard material that comprises a shell region and a hollow cast region;
pouring a soft mold material into the hollow cast region and allowing the soft mold material to set;
applying primer and adhesive to the junction interface between the shell region and the soft mold material and allowing the adhesive to set;
removing the soft mold material from the hollow cast region to expose a hearing aid shell comprising a first shell portion made of the hard material and a second shell portion made of the soft mold material; and,
wherein the soft second shell portion forms an anterior surface of the hearing aid shell that contacts an anterior surface of a user's ear canal when the hearing aid is inserted therein while the hart first shell portion forms a posterior surface of the hearing aid shell that contacts a posterior surface of the user's ear canal when the hearing aid is inserted therein.
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