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:
Aug. 19, 1997
Filed:
Jul. 11, 1995
Roland Willi, Neftenbach, CH;
Sulzer Medizinaltechnik AG, , CH;
Abstract
The acetabulum (1) in accordance with the invention comprises a spherically formed outer shell (3) as well as a spherically formed inner shell (4) which is inserted into the outer shell (3). The inner shell (4) can, for example, consist of an oxide-ceramic material, in particular of aluminum oxide. The outer shell (4) can consist of, for example, titanium. The outer surface (4c) of the inner shell (4) is formed such that it has a first partial surface (4c) with increasing outer cross-section from the pole (2a) towards the equatorial opening (4b) to a site (4a) with a largest outer diameter, that a further partial surface (4e) with an outer cross-section decreasing towards the equatorial opening (4b) connects to the partial surface (4c), which goes into a further partial surface (4f) with increasing outer cross-section towards the equatorial opening. The outer shell (3) was plastically deformed at least in the region of the partial surface (4e), so that an operative connection results between the outer shell (3) and the inner shell (4) at least over the partial surface (4e).