Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis
Patent
1991-03-21
1992-07-28
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
623 16, 623 8, 623 10, A61F 202, A61F 212, A61F 218, A61F 228
Patent
active
051337541
ABSTRACT:
Silicone rubber implants having at least two integral and inseparable sections separated by a line of demarcation where the hardness of the different sections is different so that the implant more closely mimics the human body part it simulates. A chin implant has a first hard section and a second soft section. The hard section abuts the patient's mandible when the implant is installed and the soft part provides the patient with a soft chin. A nose implant is softest at its tip to simulate a natural nose and is harder in the dorsum area and harder still in the columella area. The implants are made by injecting a first batch of silicone rubber having a first hardness into a first mold, followed by transfer of the completed part to a second mold and injection of at least a second batch of silicone having a differing hardness into the second mold, onto the first-formed part, so that the materials of differing hardness bond naturally to one another. Coinjection techniques may also be employed to achieve the same result.
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Burke Elizabeth M.
Isabella David
Mason, Jr. Joseph C.
Smith Ronald E.
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