Helical mandibular implant
Patent 4468200 Issued on August 28, 1984. Estimated Expiration Date: 
November 7, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 7, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3579831 3849887 Threaded self-tapping endodontic stabilizer Arrangement for the shock-absorbent mounting and support of a dental superstructure Patent #: 4215986 InventorAssigneeApplicationNo. 06/549585 filed on 11/07/1983US Classes:433/174, By screw606/73Threaded fastener elementExaminersPrimary: Apley, Richard J.Assistant: Isabella, David J. Attorney, Agent or FirmInternational ClassA61C 8/00 (20060101)Foreign Application Priority Data1982-11-12 DEAbstractMandibular implant of ceramic material in which a bottom portion for anchoring in the mandible has a substantially conical helix shape rounded off at the end. An upper portion has a concave section for receiving an epithelial sleeve by the concave section and an opening to accept a denture support. There are provided at least one annular expansion and at least two annular notches adjacent the upper portion and the bottom portion. The annular expansion has a diameter which is shorter than the diameter of the crest of the thread at the uppermost turn on the bottom portion of the implant. | |
