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:
Jul. 08, 1997
Filed:
Jan. 13, 1995
Sulzer Medizinaltechnik AG, Winterthur, CH;
Abstract
The outer shell (5) comprises a plurality of through-holes (12) which are provided for the receipt of fastening elements (14) for the fastening of the outer shell (5) in a bone seat (4) and which are each provided with an inner counter-sink (25). The through-holes (12) which are free of fastening elements (14) are each provided with a sealing plug (15) which is insertable from the inside outwards and designed with a sealing surface supportable in and extending around the counter-sink (25). The sealing plug (15) comprises a number of spiral springs (18) which are insertable into the relevant through-hole (12) and form a snap connection with the wall of the through-hole (12), as well as a hat-like central projection (17) disposed separated from the spiral springs (18) which is provided with an inwardly open blind bore (17a) for the receipt of a placement tool (20) screwable into it. A reliable sealing off of the through-holes (12) is thus achieved and escape into the bone seat 4 of any rubbed-off particles produced within the outer shell 5 is prevented.