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:
Dec. 19, 1995
Filed:
Feb. 18, 1994
Peter Metz-Stavenhagen, Bad Wildungen, DE;
Bernd Robioneck, Shellhorn, DE;
Howmedica GmbH, Schoenkirchen, DE;
Abstract
The present invention relates to a device for setting a spine having damaged vertebrae, comprising an anchoring element including a shaft portion (16) to be attached to spaced vertebrae, the free end of said anchoring element including a slot (24) for receiving a distracting or, respectively, compressing bar (40) and a cap nut (42) to be screwed onto an outer thread (32) provided in the region of the receiving slot to urge an axial fixing portion (44) towards the bar received in said receiving slot. The invention is defined in that the receiving slot (24) is formed in a separate swivel head (20) including an inner end in the shape of a ball receiving portion (23) which has an aperture (28) through which said shaft portion (16;52) of the anchoring element (10;50) extends, wherein the diameter of the shaft portion adjacent said aperture is smaller than that of said aperture ( 28 ), and that a ball head ( 14;56 ) is provided at the end of the shaft portion ( 16;52), said ball head having a diameter larger than that of said aperture (28) and said ball head (14;56) in the ball receiving portion (23) entering the terminal region of said receiving slot (24) .