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US 5,816,813 AGranted
Implant fixture provided with micro-threads
AssigneeAstra Aktiebolag
InventorsStig Gustav Vilhelm Hansson, Stig Goste Wennberg
Life of this patent
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Abstract
The present invention relates to an implant having a body with at least one generally cylindrical part to be implanted into bone tissue. The cylindrical part is at least partly provided with threads (2) having a height between 0.02 mm and 0.20 mm.
Claims8
An implant fixture capable of being tapped or screwed into a bore-hole in bone tissue, the fixture comprising:
- a body having at least one part with a generally cylindrical surface;
- and
- threads disposed on the cylindrical surface, no thread having a height greater than about 0.20 mm.
An implant fixture according to any one of the preceding claims, wherein adjacent threads are separated by a crest-to-crest distance that is twice the height of the threads.
Dependencies are inferred from the claim text.