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, 1996
Filed:
Aug. 02, 1994
Jean Maumy, Montauban, FR;
Roland Willi, Neftenbach, CH;
Sulzer Medizinaltechnik AG, Winterthur, CH;
Protek AG, Muensingen-Bern, CH;
Abstract
The acetabulum has an outer shell (1) which is composed of several relatively rigid outer shell segments (1a, 1c) that are interconnected by resilient regions. The outer shell (1) has regions of high shape stability which are elastically connected to each other. The outer shell segment (1) in the region of the direction of main loading (F) is made as an attachment zone (1a) and has apertures for bone screws and a guiding and attachment bore (3) for an inner shell (10). The guiding bore (3) is with respect to the whole outer shell (1) situated at the pole (P2). In the region of main loading (F) the outer shell (1), that is the attachment zone (1a), bears, engaged by shape, onto the inner shell (10), whereas the remaining outer shell segments (1c) have a spacing (D) from the inner shell (10), so that by the bell-like suspension of the inner shell (10) at the pole (P2) the inner shell is movable, particularly perpendicularly, to the axis (18), while damping elements (13a) of the inner shell (10) transmit onto the outer shell (1) particularly impact forces in a dampened manner.