Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Reexamination Certificate
2006-02-07
2006-02-07
Ni, Suhan (Department: 2646)
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
C381S328000
Reexamination Certificate
active
06996245
ABSTRACT:
A detoxification process for rendering three-dimensional objects formed by solid freeform fabrication techniques biocompatible for use in long-term dermal contact applications. The process nullifies cytotoxins normally present in objects formed by solid freeform fabrication techniques rendering such techniques as viable for the production of biocompatible devices such as stents, artery valve components, bone implant supports, pacemaker shells, surgical tools, and the like. In one embodiment, a custom hearing aid shell is produced by stereolithography from an acrylate photopolymer resin that was detoxified for long-term dermal contact application. The detoxification process makes three-dimensional objects created by solid freeform fabrication techniques available for products requiring biocompatibility.
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3-D Systems, Inc.
D'Alessandro Ralph
Ni Suhan
LandOfFree
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