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. 04, 1998
Filed:
Jan. 02, 1996
Wolfram Mittelmeier, Lubeck, DE;
Urs Limacher, Hunenberg, DE;
Allo Pro AG, Baar, CH;
Abstract
A tubular guide part which is insertable into the medullary space is connected to a source of pressure medium and to a blocking element having the form of a hollow body which can be inflated in the manner of a balloon. The hollow body is inflated via the supply of pressure medium from a basic position situated in the cross-sectional region of the guide part into an expanded position in which the hollow body seals off one portion of the medullary space, which is to be filled with bone cement and is to receive a prosthesis shaft, from a neighboring portion of the medullary space. After insertion of a part of the prosthesis shaft into the bone cement bed, the hollow body can be shrunk into its basic position by the removal of pressure medium and withdrawn from the medullary space together with the guide part. The cavity in the bone cement bed ensuing therefrom is filled up by bone cement expelled during insertion of the remaining portion of the prosthesis shaft. In this manner, a medullary space blocker is provided which can be temporarily installed in the medullary space and then removed before the final curing of the bone cement.