Positioning instrument for inserting an extension shell

Details Positioning instrument for inserting an extension shell Positioning instrument for inserting an extension shell

2006-08-15

2006-08-15

Robert, Eduardo C. (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

Reexamination Certificate

active

07090678

ABSTRACT:
The invention relates to a positioning instrument (1) for inserting an extension shell (2) into a human or animal bone, especially a pelvic bone. Said instrument comprises a fixing device (18) for fixing the extension shell (2) to the positioning instrument (1), and a displacement device (55) for displacing a disc element (15) of the positioning instrument (1) at least essentially axially in relation to the extension shell (2) fixed to the fixing device (18). Said disc element (15) co-operates with beveled surfaces (25ato25e) of the extension shell (2) during the displacement, in order to tighten the extension shell (2). Furthermore, the disc element (15)-viewed in the direction of insertion (13)-does not project beyond the radially furthest projecting elements (32a,32b) of the tightened extension shell (2).

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