Filling apparatus for bone cement

Details Filling apparatus for bone cement Filling apparatus for bone cement

1998-03-30

1999-09-21

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 86, 606 93, A61B 1756

Patent

active

059547286

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.

REFERENCES:
patent: 2836333 (1958-05-01), Woodel
patent: 4466435 (1984-08-01), Murray
patent: 4625722 (1986-12-01), Murray
patent: 4627434 (1986-12-01), Murray
patent: 5322381 (1994-06-01), Argo, II
patent: 5468245 (1995-11-01), Vargas, III
patent: 5501687 (1996-03-01), Willer et al.

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