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:
Apr. 16, 1991
Filed:
Dec. 22, 1989
Emmanuel Anapliotis, D-1000 Berlin 33, DE;
Gernot Regener, D-1000 Berlin 20, DE;
Uwe Ahrens, D-1000 Berlin 30, DE;
Hermann Jehle, D-6920 Sinsheim, DE;
Other;
Abstract
Device for compression screwing fractures of the femural neck, consisting of a plate of a sleeve, the sleeve being hollow and cylindrical in shape, the plate of the sleeve being attached by screws to the femur shaft and of a bone screw being located within the sleeve which is provided with a female thread on its head side into which a compression screw having a respective male thread fits, whereby the compression screw is supported by means of the bottom edge of its head or by a respective, especially conical contact surface for the limitation of its movement against a fixing ring being located within the sleeve in such a way that it can be displaced, sliding with its surface along the inner surface of the sleeve and having a conical surface in an axial direction that is adapted to the bottom edge of the head of the compression screw and the cone angle of which is sized in such a way that the adhesive friction between the outer surface of the fixing ring and the inner surface of the sleeve is greater than the compressional force acting in the longitudinal direction of the screw.