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:
Sep. 21, 1999
Filed:
Mar. 30, 1998
Mathias Heller, Winterthur, CH;
Hans-Georg Willert, Gottingen, DE;
Sulzer Orthopaedie AG, Baar, CH;
Abstract
The invention shows a filling apparatus for the introduction of bone cement into the intramedullary cavity of a bone, preferably into the cavity of a femur bone. The apparatus has a filling cannula, at the end of which a rubber sleeve in the form of a sheet metal bell is fastened which projects with its movable part radially beyond the diameter of the filling cannula and axially beyond a lowermost outlet aperture of the filling cannula. Because the sleeve is executed in the lower expandable part with a thickness 1 mm<s<2 mm and is fastened above an uppermost outlet aperture of the filling cannula at a distance 3 mm<1<50 mm and projects with its lower edge beyond a lowermost deflection edge 11a of a lower outlet aperture by a distance 5 mm<a<50 mm, its cross-section adapts to the cavity wall when being introduced without getting caught up and seals it during the expulsion of the bone cement.