Dental implant
AssigneeTri-Stage, Inc.
InventorWilliam F. Zingheim
Life of this patent
Estimating the term…
Abstract
A dental device implantable in bone comprises a hollow cylinder which has an open end and a closed end with an outer surface between the ends. A plurality of shallow oblong-shaped grooves are formed into the surface near the closed end with the longitudinal axis of the grooves aligned to inhibit rotation of the device in the bone. Additionally, a shallow annular depression traversing each of the grooves is formed into the surface to inhibit vertical displacement of the device in the bone.
Claims17
A device implantable in bone for holding objects while substantially eliminating stress risers at the interface between the bone and the implant which comprises:
- a tubular cylinder having an open end and a closed end, with an outer surface between said ends and a cavity extending longitudinally into said device from said open end toward said closed end;
- a plurality of oblong-shaped shallow grooves each of said grooves defining a rounded transition between said groove and outer surface which is rounded and has an arc length less than thirty degrees, said grooves being formed into said surface near said closed end with the longitudinal axes of said grooves aligned substantially parallel to the longitudinal axis of said cylinder to inhibit rotation of said device in said bone;
- an annular depression traversing each of said grooves and defining a transition between said depression and said outer surface which is rounded and has an arc length less than thirty degrees, said depression being formed into said surface to inhibit displacement of said device in said bone.
A bone adaptable dental implant for substantially eliminating stress risers at the interface between the bone and the implant which comprises:
- a tubular cylinder having a smooth outer surface;
- a plurality of grooves oriented longitudinally on said cylinder, each of said grooves defining a transition between said groove and said outer surface which is rounded and has an arc length less than thirty degrees;
- and
- an annular depression which traverses said grooves and which defines a transition between said depression and said outer surface which is rounded and has an arc length less than thirty degrees.
Dependencies are inferred from the claim text.