Measuring apparatus for total knee replacement operation

Details Measuring apparatus for total knee replacement operation Measuring apparatus for total knee replacement operation

2007-01-02

2007-01-02

Robert, Eduardo C. (Department: 3733)

Surgery

Instruments

Orthopedic instrumentation

Reexamination Certificate

active

10669419

ABSTRACT:
An apparatus in a total knee replacement and arthroplasty operation for measuring a joint gap and ligament balance between a osteotomized surface at a femoral distal end and a osteotomized surface at a tibial proximal end. The apparatus is provided with a base10,from which an engaging plate14extends by way of an arm, so that the engaging plate14contacts with the osteotomized surface at the tibial proximal end. A moving body18is vertically movably connected to the base10,from which moving body18an arm20extends, to which arm a supporting plate22is rotatably mounted about a central axis. The supporting plate22has, at its top surface, a projected portion48.to which an auxiliary guiding piece50is connected under a snap like fitted manner. A femoral component52is mounted, at its groove portion54,to the osteotomized surface at the femoral distal end. The engaging plate14as well as the supporting plate22are under an offset arrangement with respect to the base and moving body, respectively.

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patent: 5911723 (1999-06-01), Ashby et al.
patent: 6022377 (2000-02-01), Nuelle et al.
patent: 6478799 (2002-11-01), Williamson

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