Patent ID: 6524319
Filing Date: 2003-02-25
Classification: A61B,A61F

Abstract:
A surgical instrument for removing at least one of a distal and peripheral cement (2) and a medullary block in a medullary cavity (8) when endoprostheses are replaced comprising a drilling tool (4) for drilling a bore through the cement and the medullary block and an extraction tool (6) for extracting the cement and the medullary block;characterized in that the drilling tool (4) and the extraction tool (6) comprise a bore (14,16) extending coaxially to a tool shaft of the drilling tool (4) and the extraction tool (6) for receiving a centering bolt (10), the bore diameter of the coaxial bores (14,16) of the drilling tool (4) and the extraction tool (6) is substantially adapted to the centering bolt (10), and the centering bolt (10) being anchored at a predetermined location in the cement (2) and the medullary block in the medullary space (5) located distally there below and is configured as an axial guide for the drilling tool (4) or the extraction tool (6).