Patent ID: 7311733
Filing Date: 2007-12-25
Classification: A61F

Abstract:
1. A vertebral body spacer having a cylindrical inner body ( 14 ) that is telescopically slidable into a coaxially arranged, sleeve-shaped outer body ( 16 ), a detent device acting in one direction being disposed between the inner body ( 14 ) and the outer body ( 16 ), a plurality of detent lugs ( 22 ) forming a row ( 20 ) of detent lugs being arranged one behind the other in the axial direction, and a plurality of detent notches ( 26 ) being arranged one behind the other in the axial direction so as to correspond to the row ( 20 ) of detent lugs and forming a row ( 24 ) of detent notches for receiving in part or in whole the row ( 20 ) of detent lugs, a groove ( 28 ) for hindrance free reception of the row ( 20 ) of detent lugs being provided beside the row ( 24 ) of detent notches in the axial direction, and each lug ( 22 ) comprises one stop face ( 32 ) and one slide face 30 , characterized in that the detent lugs ( 22 ) and the mating detent notches ( 26 ) are obliquely disposed and in that said stop face 32 is substantially radially oriented for easy engagement with a stop face of a notch ( 26 ) preventing premature collapse of the inner body within the outer body.