The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 1991
Filed:
May. 19, 1989
Per-Ingvar Branemark, Molndal, SE;
Abstract
A fixture intended for implanting and anchoring in bone tissue, particularly in bone tissue of the jaw, to support a prosthesis such as the crown of a tooth. The fixture has at least a surface layer of material compatible with the tissue, such as titanium. The fixture comprises a lower shaft portion with external threading and an upper, smooth, neck portion. The lower portion is arranged to be screwed into a hole drilled in the bone tissue. The diameter of the hole is substantially in agreement with the core diameter of the shaft portion. The diameter of the neck portion lies within the interval between the outer diameter of the thread on the shaft portion and the core diameter of the shaft portion. The neck portion has an axial length exceeding the settlement in bone level which normally occurs upon use of the fixture.