Patent ID: 8834529
Filing Date: 2014-09-16
Classification: A61B

Abstract:
1. A method for mounting a polyaxial screw into a bone, the method comprising: rotating a drive cap so that a screw mounted to the drive cap is screwed into a bone, the drive cap having a socket in which a portion of the screw is pivotably disposed, at least a portion of a collet being disposed within the socket between the screw and the drive cap; positioning a stabilizing structure and a fastener onto a shaft projecting from the drive cap; and advancing the fastener along the shaft so as to push a portion of a compression cap against the collet which in turn wedges the collet within the socket of the drive cap and causes the collet to bias against a portion of the screw, thereby locking the position of the screw, the collet, and the drive cap relative to each other.