Rasp for hollowing out bone in order to fit prothesis, comprises rasp discs fixed to central shaft

摘要

#CMT# #/CMT# The rasp comprises rasp sections (20, 21) secured to a central shaft and a means (3) for fixing the rasp sections onto the shaft so that they can not be moved relative to the latter. The rasp sections form a stack of parallel rasp discs. #CMT# : #/CMT# An independent claim is also included for a method for making the rasp, by taking measurements of the part of the bone in which a cavity for a prothesis is to be formed and then using these measurements to define the shape of the individual rasp sections. #CMT#USE : #/CMT# For removing bone material in order for a standard or made-to-measure prothesis to be fitted. #CMT#ADVANTAGE : #/CMT# The rasp can be used more than once. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# Figure 1 shows the rasp. 1 : Central shaft 3 : Nut 20, 21 : Metal half-discs.