Patent ID: 6517582
Filing Date: 2003-02-11
Classification: A61F

Abstract:
Ball draw-off apparatus for shaft prostheses with balls (3) which can be placed onto the prosthesis neck (2), said apparatus having two rotary bodies (5a, 5b) which are rotatably supported in a housing (4), which can in each case be rotated with a lever arm (6a, 6b) and which with their axes of rotation (7a, 7b) lie in a common plane F and form an open gap S in a projection onto the plane F for an introduction of the prosthesis neck (2), with the rotary bodies (5a, 5b) having a profile (8a, 8b) which with increasing rotation decreases the gap S for clamping the prosthesis neck (2) and causes an increase of the distance of an upper edge (9a, 9b) from the plane F in order to produce a draw-off force P at the placed on ball (3) directly or indirectly via an intermediate body.